Chris confirmed the first SIS beam would be Na+1. Next Rb+1 and then Li+1

Elog is now functioning. We can start entering notes

20Ne+2 beam optics saved as 150914_1117_ios0iosfc6.snap

Service of MCIS.  Plasma chamber cleaned.  Repaired shorted, Right steering plate.  Added shields to help prevent coating of wires.  Beam is off centre on first collimator of steering assembly.

Moved Ground electrode away from PE approximately 0.10".

  Note:  the plasma chamber and ground electrode tip are clean.

2015-05-19  Repaired shorted MWS PE.  Internal short was found.  The source chamber was vented and cleaned.  The beaker was replaced with a new one (it was coated with carbon).  WPI2015-05-19-2

Investigate Shorted MWS PE and MCIS shorted steering plate WOI2015-05-19-1

A water leak was reported inside the HV cage (FR#8079).  The cage was accessed to determine the source of the leak (WP#I2015-04-27-1).

The WMS cusp cooling line was leaking.  It was close to the MCIS cart (at ground) and had sparked through.  The hose was cut at the puncture location and re-connected. to the fitting.  It was re-routed to be further away from the MCIS cart.

The OLIS 1 week shutdown has been completed (WP 2015-04-13-1).

General-

Y-Box insulators were inspected and look good.  Beamline optics were inspected.

MWS-

The La disk was removed.  Source housing was cleaned and re-asssembled with a beaker installed. 

MCIS-

The cart was installed in the HV cage.  Kr gas pack was installed on the cart and the transfer tube was opened up to MCIS vacuum.

SIS-

Source PE and EE assembly was removed and opened up for inspection.  A new source was assembled (1/4 Ta tube and 0.040 Ta Oven & Ionizer wires) and installed.  Lithium Nitrate Anhydrous (ALFA #13405 TR#205938) was inserted in the oven.

Additional details-

M:\OLIS\OFF LINE ION SOURCE\DOCUMENTS\Shutdown Work

OLIS MWS is currently running an producing 22Ne2+

The MCIS was vented with nitrogen yesterday.  The Se oven was drawn back into the tuner.  It was removed with the tuner and blanked.

The standard quartz window was removed and replaced with a ceramic, test window supplied by CPI. (p/n VWU2054).  The system is currently pumping down.

141125_1159_OLIS_76Se+13.snap is saved in reference directory.

El=3480/4303V

MCIS:YCB1=110

MCIS:XCB1=190

MCIS:CCB1=300

Frequency = 14.44765GHz

Amplitude = -10.880

TET FP= 9.8W

TWT RP = 1.8W

MCIS-

the Se was loaded into the oven last friday (21st).  During the weekend the presence of 76Se +11 to +15 was verified.

NOTE- the oven p/s on the cart is broken.  An attempt was made to remove it on friday.  It may be possible to remove, if the rack it is mounted on is loosened and turned.

SIS-

the Ionizer p/s control cable was removed to allow for local operation.  Keerthi tested the power supply in local mode on the weekend and found that the voltage did fluctuate.  This was confirmed by changes in the beam current.

Set-up pictures are located in -

M:\OLIS\OFF LINE ION SOURCE\SURFACE SOURCE\Single Source - Purchased Box\PICTURES\2014-11-21 Voltage Fluctuation setup

Ionizer Power supply + is connected to the common on the SIS source

Ionizer Power supply - is connected to the Ionizer on the SIS source

a cable is connected from the SIS main, bias plate to the negative terminal on the p/s.

I updated the electrical Diagram  for OLIS Faraday Cage with 3 Ion Source, ref: ISK4586D rev. 2

PS:  Make sure that you do not connect both Bias P/S on same Ion Source ...

There has been no noticeable loss of communication to the ALGA 50watt amplifier.  As a test, the ethernet cable was removed for about a minute and then reconnected.  The amplifer re-established communication without issue.  This test was done twice.

Now, the CPI ethernet cable has been returned to the CPI amplifier.  The original ALGA ethernet cable (blue) has been reconnected to the ALGA.

PS  The nitrogen bottle has been replaced.

The ethernet cable from the CPI TWT amplifier has been temporarily moved to the Alga 50W amplifier.  The Alga had been experiencing loss of communication.  This has not been an issue with the CPI so this cable will be tried with the Alga.  A signal generator is not connected to the Alga.

A new SIS source has been installed.  The oven has been loaded with Sodium Hydrogen Carbonate (Alfa Aesar 10863) and Rubidium Nitrate.

Pictures are located in 2014-11-13 Source and PS Pics

Today we replace the in-line resistors for the Plasma Electrode (PE) it was a 25 ohm 200W (2 x 50 Ohm 100W) with a 50 Ohm 200W (2 x 100 Ohm / 100W) also added the inductance coil.

This is R5 on drawing: ISK4583D rev. 10

This was done to reduce the power on R5

Note: We still need to make sure the the FAN is running to cool the resistors when the PE P/S is ON.

MCIS-

the source is off.  It is under vacuum and in the HV cage.

SIS-

the test filament assembly has been removed for inspection and the port blanked.  Ray D. noticed that the Swagelok connections for the water manifold are extremely close to each other (potential short).  Yesterday, when reducing the current on the ionizer the voltage varied significantly.  The currently on the FC also changed.

The temporary collimator installed in the 4-1/2 CF port has been modified.  the through hole opening has been increased from 3mm diameter to 6mm diameter.

Supernanogan is running with oven no heat, without 76selenium. MCIS:IG1=3e-7Torr.

Tune saved as 141101_1318_76Se+11tune.snap

MCIS steering  X=330, Y=226, CCB1=500, MCISEL=4171/5157, PE=11.5/23, FC6=76nA(16O+7)

MCIS-

the MWS Bias and PE have been moved on to the MCIS (the MCIS connections have been removed).

The plug in power to the HP Signal generator has been moved to a continuous source (Removed from the source controlled by the SSW).

SIS-

a test filament assembly has been installed in the SIS.  No chemicals have been loaded or alignment done on the oven / ionizer.  It has been installed just as a test.

A/q           FC6  (only current over 100pA)

6.0           1.85e-7

6.15         4.96e-10

6.23         2.4e-10

6.31         6.14e-10

6.39         2e-10

6.51         1.82e-9

6.90         2.7e-10

7.00         5e-8

7.1           4.6e-9

7.27        1e-10

7.5        3.32e-10

A/Q            FC6

4                1.1e-6

4.25          8e-10

4.34          1.2e-9

4.42          5.5e-9

4.51          2.59e-9

4.58          1.7e-10

4.66          1.7e-10

4.74          1.7e-10

4.85          4.6e-10

5.0            1.36e-10

5.07          1.5e-10

5.13         2.69e-10

5.25         4.89e-10

5.33         9e-7

5.39        3.0e-10

5.56        3.3e-10

5.67        1.12e-9

5.7          5e-9

5.83       4e-10

5.92       2e-10

6.000     1.85e-7

IOS mass scan if faulty. These is a manual scan from mass 3 to 4

Const22 = 0.04187  adjusted to mass = 4

A/q               FC6           X          Y 

3.0075        8.14e-8      398  237

3.1222        4.93e-10   398  237

3.2064        6.24e-7     398   237

3.2613        1.05e-9     408   237

3.3395        2.29e-10   408  237

3.4072        5.6e-10     408  237

3.5089        3.36e-8     408  237

3.5600        1.4e-10     408  237

3.6069        1.86-9       408  237

3.6436        8.46e-10  408  237

3.7514        4.02e-10  418   237

3.8387        4.37e-9    418   237

3.8883        3.43e-10  418   237

3.9416        1e-10       418    237

4                   1.1e-6     418    237       500  

IOS mass scan does not work.

A/Q            FC6                X          Y          CCB1

1                2.07e-7        167      97       500

2                2.18e-7         308     247

2.14          1e-11             388     277 

2.246       2.07e-8         358     227

2.30          2e-9             378      227 

2.366       1.28e-8         388     277

2.392        2.1e-11        388     277

2.4641      1.98e-11     388     277

2.5345      6.49e-11     398     277

2.5614     1.81e-10      398    227

2.6263     2.95e-7         398   227

2.7522     2.07e-8         398   227

2.7896     2.06e-10       398   227

2.8652     3.22e-11       398   227

2.9515     8.52e-8         398   237

MCIS-

a new oven assembly was installed on the MCIS yesterday.  The cart has been installed in the cage and is connected.

The power is connected to the cart oven as is the MCIS bias.  it is currently on and being tested for Se

MWS-

Keerthi removed the Be electrode and installed the quartz beaker.  There is quite a bit of a copper coating inside the source.

MCIS-

the cleaning has been completed.  The oven assembly is removed and the gate valve closed.

The quartz tubes on the ground electrode have been installed with the larger diameter tube pushed as far downstream (toward the optics box) as possible.  The smaller tube has been positioned to extend 1-3/4" into the plasma chamber w.r.t. the insulator flange.

Currently the turbos are running and the source is pumping down.

Note-

there was a Controls problem when trying to operate the source.  They tracked the problem down to a bad ethernet communication cable.  A temporary cable is in place while a new one is being prepared.

MCIS-

cleaning out source to remove potassium and calcium.

Areas cleaned with scotch-brite and then wiped with methanol:  plasma chamber, tuning chamber (ports opened for access), TP3 tube.  The inside of the ground electrode tip has been removed and sand blasted clean.  The inside of the ground electrode has been wiped as much as possible (very limited access).

 The ALGA amplifier has been unplugged and moved.

The nitrogen bottle needs to be replaced.

MCIS-

Does not appear to be producing very much Se.  There is a lot of calcium and potassium.

Cart is removed.  Unplugged CPI amplifier.   No extra time for investigation.  Set-up required for MWS.

note:  one cart wheel is damaged.  will need to service, or replace in s/d.  other wheels will need to be check as well.

MWS-

Changed to Be plasma electrode for upcoming experiment.

The ALGA amplifier and its signal generator have been turned off at the request of Controls.  They have had communication issues and are looking for any recent changes.

The remaining connections were done on the MCIS. 

A piece of 1/8" teflon was installed between the back of the sputtering tube/motor and the HV cage.

Ray confirmed the cart power supplies (heater and sputtering) Epics page readouts for Voltage and Current are okay.  The Heater p/s was left plugged into the cart receptacle.  The Sputtering p/s's are unplugged.

The MCIS:FC0 OUT limit was not actuating.  It was adjusted.

Keerthi tested the oven last night and was getting Se (14/10/24 it appeared to be Se, but the Prague magnet was not working.  Further investigation revealed it was not).  The oven supply is currently bypassed and ON.

Evigeny is working on the Alga and CPI amplifiers.  Both signal generators and the amplifiers are powered ON and connected.  Alga to the dummy load and CPI to the MCIS.

MCIS-

the cart was moved into the HV cage.  The facilities will be connected and an oven will be tested for the upcoming Se experiment.

Will take measurements for installation of key interlocks on cart power supplies.

SIS-

the filament assembly was removed for inspection.  When increasing the ionizer current it would work correctly until about 20 amps.  Then the current would stop (like an open cct).

MWS-

will prepare for Be later this week.

This entry was incorrectly added to the OLIS logbook.  it has been moved to the I3 logbook.

We did a test yesterday with the new Alga Microwave RF AMP, model # ALPA 50 Watt, serial # 130684 to be used for the MCIS.  We used the RF Generator from MISTIC and set the frequency to 13.80 Ghz, note that the RF Generator was/is  limited to 16DB maxiumum RF output.

The RF cable that we used was from the 200W RF AMP, it has a 20DB SMA attenuator at the Generator end, so we could only get about 25 Watts maximum output.

I found these files about the MCIS in Geoff folders in M:\ISIS\Geoff-110715\OLIS\SuperNanogan

Today Probe group (Scott K.) installed the OLIS Attenuator, they fixed the vacuum leak on Attenuator #2,  Marco M. asked them to remove Attenuator #1 because it is not needed and confusing for Ops;

Attenuator #1 was an experiment that Marco M. asked for, it was the same as Attenuator #2 but with 45 degrees offset, the results were not good and he decided to remove it.

Arthur and Derek had a look at the OLIS Bender Magnet P/S and found a problem with the Polarity Switch, it was set up upside down, they fixed that.

Note: We do not need a Polarity Switch for OLIS may be we should remove or bypass it, at the moment when the PS goes OFF we need to use the reverse Polarity to Bend the Beam the right way.

We spent most of the day looking at OLIS to find out why the "Ionizer Coil" keeps breaking down, we found the following:

1.  The FAN to cool R5 (ref: ISK4583D rev.7) a 25 Ohm 200W Resistor (2x50 ohm/100W ea.) was not ON, the nylon insulator (also the plastic tube across to the HV Terminal) was burnt and not holding the R5 resistor properly, I replaced the plastic insulator with a ceramic insulator.

Note that if the PE electrode is open it will charge up to the beam energy and start sparking.  Also I used a red heatshrink tubing to prevent the BNC connector (it sits at Common) to touch the Cu pipe for the Plasma electrode water cooling.

2.  Drawing for PE Polarity Switch: ISK4386D rev. 5

3.  Drawing for EE:SS BOP (resistors & spark gap): ISK4584D rev. 1

4.  Drawing for OLIS Surface & McroWave Source electrical diagram: ISK4583D rev. 7

Attached is the scheduled work for OLIS next week.

I updated 2 drawings that show the OLIS skimmers.

A.  ISK4363D for the OLIS Skimmers BOP connections, we have 7 skimmers cables (6 wires per cable) going in and 16 skimmers channel going out to Controls.

B.  ISK4365D that shows the skimmers cables location along the OLIS beamline.

I created a new drawing: ISK4586D that shows the Optics for OLIS with 3 Ion Source.

I updated an old drawing ISK4478D (MS & MCIS Optics) and created 2 new ones: ISK4583D (Electrical Diagram for SS & MS) and ISK4585D (SS & MS Optics)

If you see any errors please let me know.

Last January 17th 2014 we removed an in-line resistor (100K 10W) from IOS:YCB1A because we do not think that it is needed.

Controls group may need some assistance from OLIS group in order to trouble shoot the problem.

IRIS beam delivery is completed with extra 3 days of beam providing to them.

18O2 and 40Ar+2 were delivered with few attenuators i place.

During the last week we delivered 18O+2 from microwave ion source to Ritu.

Over the week end changed to 40Ar+2.

Ritu informed us 18OH2 is coming with 40Ar+2.

Moving the slits ops managed to reduce 18H2 contaminant from the beam.

Good lesson for the future. Bad combination one after the other.

MCIS finished xenon development. MCIS is off and isolation valve is shut.
A new oxygen gas line is installed to microwave ion source via a hand valve neat PE.
Hand valve is tuned as a small leak so that the plasma can run with all other gas valves are shut.
However if one need to start the source Ne gas valves are needed to be opened.
A 3.13nA of 16O+2 is sitting at FC6 and ready to use as pilot beam.

Removed titanium from the back plate and clean the source.

But left the PE titanium insert since Bob and Marco badly want the 12C++ beam from the source fast.

Background 12C++ was only 400pA so installed a small canister with CO in it with bellow atm. pressure.

Now source is running with ~2nA current.

Supernanogan on overnight with 36Ar+7 on FC6. Nice.

Today is the last day of scheduled OLIS Shutdown. Expect more source development today followed by a hand-off to ICR at some point.

Supernanogan 36Ar+7 source development in progress. RF frequency scans are the agenda for today.

Later... Some good beam results and 300enA beam on FC6. Note: 5mm slits are in.

Supernanogan is online with 36Ar+7 on FC6 overnight. Looks good. Note: The source gas arrangement (enriched 36Ar) utilizes double buffer canisters and calibrated leaks, and requires MCIS:TP3 off.

Controls is preparing to perform an IOSIOS reboot for the sake of new code for ILT:RPM8 or something like that.

IOS pumped well over the weekend. Present pressure is 1.5e-7. MCIS pumps off for setup.

Later... Supernanogan is online with better than 250enA of 36Ar7+ on FC6 presently ~17:00. Note: MCIS:TP3 is off by intention for this run.

MCIS continues to pump well. IOS DB assembly planned for today.

Later... DB assembly complete and IOS under vacuum. Present pressure: 1e-6 Torr at ~18:00. All optics hold voltage.

MCIS pumped well overnight. Source development imminent.

Later... possible IOS intervention. Spin down turbos in anticipation... Meanwhile, MCIS pressure was at 7.8e-8 Tott at the start, and dropped to 7.4e-8 Torr immediately upon closure of MCIS:IV1. Note that IOS:IV0 remains open with interlocks bypassed.

MCIS pumpdown continues well. IOS optics coming along. DB3 installed last night and IOS is under vacuum very early. DB1/2 optics will remain out until the end of the next-up MCIS run.

MCIS pumped overnight. Still coming down.

Two weeks of OLIS Shutdown have begun. The plan is to complete refurbishing this week and pump next week, with 36Ar+6 beam ready at the end of it. IOS is vented and open. The Supernanogan cart is out, vented and open. Plasma chamber cleaning and refurbishing in situ are in progress. The IOS upstream optics DB1-3 have been removed for refurbishing on the bench.

Later... Supernanogan MRO completed and closed. Pumping underway by ~15:30. Leakup curve appended below.

Deliver concluded yesterday morning around 09:00. Pity to have to switch off the source. OLIS is now in its Shutdown.

Delivery continued overnight.

Delivery continued uneventfully overnight and is continuing.

Later... source is just getting better and better. See Stripchart below.

Beam petered out earlier this morning after an attempt to tweak the RF frequency. Restored. Plasma was on throughout. ICR has lowered RF amplitude to match beam intensity to yesterday's running conditions.

Delivery since Friday Beam on but intensity is dropping, suggesting that enriched 33S powder is running out. Plan in place to add more this evening.

MCIS configured for 33S+6 yesterday afternoon. Beam grew nicely overnight. Beam development expected after source hand-off.

Cocktail beams continue today.

Source set up for a cocktail beam since yesterday, Sunday.

Source setup took place earlier this morning.

Slit calibration exercise was wound up this morning. MCIS source gases were reconfigured with 19F and 40Ar by request. A "cocktail" beam will be used for HE development over the Thanksgiving weekend. A mass scan is in progress presently.

The source stayed up overnight. A little RF tweak, but 33S+6 beam still on FC6.

Later... IOS:MCOL3 slits calibration with beam in progress.

Beam development with 116Sn+18 finished last evening around 21:00. Source was off overnight. 33S material loaded into MCIS oven. Source pumped overnight.

Later... source is lit. 33S+6 on FC6 and growing.

On Friday there was a request to repeat some of the findings with tin beams. An agreement was made to use OLIS for development in lieu of Shutdown MRO as scheduled. MRO is planned for November 2nd &ff. HE development took place over the weekend with 116Sn+18, A/q=6.44.

Next up: 33S source development. Setup this evening.

Development with Supernanogan source continues. Present beam is 40Ar+7, about 70enA.

40Ar source gas, ergo 40Ar+x beams. 40Ar+6 earlier, and 40Ar+7 presently.

Beam development for forthcoming 36Ar run is in progress. Initial yield numbers have been determined. Source is running with Ar plasma presently, and tests will be repeated after source has conditioned for a while. The goal is to determine yield numbers of 40Ar and scale these to beam to be produced with source gas of enriched 36Ar. FYI:

Naturally occuring isotopes of argon:

Ar-36 ( 0.3365% )
Ar-38 ( 0.0632% )
Ar-40 ( 99.6003% )

The 17O+3 (A/q=5.66) run to TACTIC finished yesterday morning. Then a source switchover was done to deliver 13C+3 (A/q=4.33) using enriched 13CO2 source gas.

Later... TACTIC is done. Next up: beam development at MCIS for upcoming 36Ar run.

Delivery continues. 14N+3 until mid-morning, then a switch to 17O+3 for tuning. The switchover from 116Sn to TIGRESS to 14N+3 to TACTIC was done on Tuesday mid-morning.

Delivery continued over the weekend with some interruptions here and there. A source intervention was made late last night and into the wee hours, and again this morning. Tuning to TIGRESS has resumed.

Note that ICR was using a 12C+2 beam for setup purposes. Their procedure was to turn off MCIS when beam not in use to minimize carbon contamination in the source. 12C+2 -> 116Sn+18 last evening around 21:00 with source expert present.

Beam was changed to 14N+2 last evening for sake of tuning to front of RFQ. Source was tweaked earlier. Beam is presently set to 116Sn+18 with tuning activities in progress.

Source switchover began last night after 22:00. There are some 200epA of A/q=6.46 (116Sn+18) on FC6 presently. Setup and tuning continue.

Natural abundances of Sn:

Sn-116 ( 14.54% )
Sn-117 ( 7.68% )
Sn-118 ( 24.22% )
Sn-119 ( 8.58% )
Sn-120 ( 32.59% )
Sn-122 ( 4.63% )
Sn-124 ( 5.79% )

Later... ~70epA at FC6 after some conditioning and fiddling.

Beam delivery was scheduled to end last evening at 20:30. It was extended to around 22:00, at which point source switchover began.

Delivery continues. Nice consistency. See attached Stripchart. A source switchover is scheduled for today, tonight, as it turns out. Good luck with that.

Delivery continued through the night. User was taking the beam. Recovery from a DTL tank trip is happening at the moment. Otherwise, beam is very good. And strong.

Setup began around 09:00. 400enA of A/q=6 on FC6 presently.

Later... By ~14:00 beam looks pretty good. See Stripchart below.

Delivery continued through the weekend. Some 300nA on FC6. The run ended at around 09:00. Source switchover is in progress now.

The 58Ni delivery from MWS to TITAN ended last evening. Beam was unused from about 18:30, and source switchover began at about 22:00. A 4He1+ beam from MCIS was established by 03:00 this morning. Around 35pA is available on FC6 presently. Note that at A/q=4, there are likely contributions from 12C+3 and 16O+4.

Delivery continues. Source change scheduled for 20:30 this evening.

Pilot beam delivery continues. Keerthi came in over the Labor Day weekend to help out on something.

Beam is scheduled for one more day. A source change is scheduled for 20:30 tomorrow.

Beam idled overnight. Average ~50pA at FC6. About half that on ILE2T:FC3 presently. Setup on TITAN side in progress.

Later... ICR is concerned about the OLIS separator magnet wandering during the day. It's sunny today, so I would expect a little more wandering than on a rainy day. Also, they have significantly higher current at A/q >58.1 and asked if there could be another mass in the mix. Checking.

Later... TITAN takes coffee break. Opportunity to do a mass scan and also tweak source. Confirmed that centroid of mass peak is ~58.2. (Note: Slits left open for scan, so resolution is low.)

Note: Since this morning magnet adjustments, there are some 200pA of beam at FC6.

Beam was established yesterday. It has grown nicely overnight.

Beam on FC6 drifted overnight. Touch up a few things, notably the EE. 25pA on FC6 presently. I also increased microwave power for effect.

Later... about 25pA on FC6. Somewhat noisy, but also stable. I left microwave at 700W. Beam handed over to ICR at ~13:15.

A note about mass flow controller. The new Hastings controllers do indeed shut off completely at zero setting. It should be noted that control in the sub-1sccm region is challenging. Move in 0.01 steps. I found that everything was fine down to 0.15sccm. The next step after that, i.e. to 0.14, closed the flow entirely. Not a crisis in this situation.

Source switchover from MCIS to MWS. Support gases and liners were pre-fitted. Source lit. Optics set for 20keV operation. ~50pA on FC6.

We are on orders to retain OLIS for accelerator development. The switchover to 58Ni, scheduled for this morning, is on hold.

Meanwhile, there were WFB1 and PV1 trips this morning. All reset and beam is on. The WFB paddle for the MCISRFS circuit was still rotating at a reasonable rate. I adjusted the WFB setting for ON state with minimum flow.

Later... Beam is still sitting on FC6, very happily, I might add.

Later... at 14:40 I called ICR for clearance to switch beams. Consult with Bema Experts... Yes, I have clearance. Close IV7. EOB for 17O3+.

Delivery continues on autopilot. Looking good. ICR noted that a seemingly unusual number of tweaks to the IOS separator magnet have been required. This is not so surprising, given that the magstab program is not running presently. It is expected that today will be EOB for DRAGON. A switch to 58Ni is on deck.

Later... DRAGON is finished taking beam. ICR is using the beam to set up the accelerators. Beam switchover and maintenance for IOS:IG8 replacement will happen in the morning.

Delivery continues.

Delivery continues. There were several "PV1" trips over the past several days. ICR now has a recipe for resetting this condition. We await a general instruction from ICR via email.

Meanwhile, MCIS:TP3 was off for the last while. ICR notified. Investigating. Turned on again.

Later... At this charge state the source works better with TP3 off. See attached Stripchart.

Delivery continues. The attached vacuum trar suggests that this is about as good as it's going to get. On the other hand, there is a uA of beam on FC6.

Setup in progress. No foil at M:5. Source has been running since yesterday. Note that source was opened recently for MRO. Vacuum pumpdown chart for past several days attached.

Later... ~10:00 ICR reported MCIS:PV1 closed. On closer inspection, it was pretty clear that the classic PLC "all PVs go to zero" state occurred sometime earlier this morning, etc. ICR has restored vacuum. Now to restore the source...

The source was configured and switched over on Friday. Some teething pains over the weekend. Beam is on FC6 presently.

Cart removed for source servicing. Source opened and split at front seal. Ground and plasma electrodes removed. All internal areas cleaned. Source reassembled. Initial pumping in progress. Leak-up curve a little soft, but reasonable given the cleaning materials used: methanol, acetone, Simple Green.

Source started at 800W of microwave power and 2cc/min neon gas easily. New magnetron produces more power than the old one.

We should try to keep MW power under 500W during running and use only 800W for ignition.  EE left off for the night.

There have been teething pains developing a good 27Al beam. The Supernanogan sputter source ate through aluminum rods like candy. The MWS worked for a while, but would not hold a sustained plasma. IOS was opened a couple of times to clean the MWS. It ran for a while today, then blinked out. Leak checking is in progress. But the source looks pretty tight from that point of view.

Update at 16:30: Bob has declared EOB for the 27Al run. Next up next week: 22Ne2+, from MCIS if bias will hold comfortably at 22kV.

Source is now pumping down. Damien, Please start the source as soon as you arive. Try to keep PE current below 500mA. Optimum is ~200mA

The DRAGON run finished this morning. Switchover to 27Al+6 in progress now.

Keerthi came in early this morning to set up OLIS for 24Mg delivery. HEBT tuning is in progress.

Keerthi came in on Saturday morning and set up the Supernanogan source for 4He delivery. It looks like it went well. The original intent was to use the MWS for this, but sputtering got in the way. He also came in yesterday to tweak the recipe to minimize 16O4+ and 12C3+ (A/q=4) contribution to the beam. The run finished last night.

25Mg beam mostly sitting on FC6 now, as HERACLES takes RIB. Source was opened on Monday night to replace microwave window. Beam will be u sed again towards the end of the HERACLES run, then EOB tomorrow morning, Saturday.

Well, the plasma electrode shorted again, and Keerthi came in on Saturday to tear down the MWS and clean it. Beam is steady as she goes presently. Delivery continues today in lieu of RIB unavailability for today. A switch to RIB is expected this evening.

Beam on FC6 overnight and very stable. It grew overnight and continues to grow, but hasn't hit 1pnA yet. Marco is tuning with what he has. Let's see how it goes.

Meanwhile, the last Mg/MWS run occurred on October 27, 2010.

Source settings: https://elog.triumf.ca/OLIS/General/101027_104242/grab.aO2483.png

Support gas settings: https://elog.triumf.ca/OLIS/General/101027_104322/grab.Yu2502.png

Trar chart of 26Mg on FC6 appended below. The natural abundances of 25Mg and 26Mg are similar.

Later... Marco reports no 25Mg at MEBT. See ISAC elog. Meanwhile, IOS mass scan of 24-26 appended.

Later... Play with source gases a little. Unexpected glitch: IOS vacuum is tanking... Settled at 1.2e-5 Torr. Checking... Looks like front collimator is plugged. Pretty good chance we were generating Mg beams. Meeting of minds... Consensus: Open and clean.

Later... Source opened and cleaned. Backplate and front collimator removed and serviced in the process. Pumping at ~16:15. Leak-up curve looks good.

Later... Source at high vac. Power on. Plasma lit like soft butter. Premature mass scan in progress. Done. MCOL3 restored to 5mm slit settings. Tiny beam on FC6. It can sit and grow overnight.

Hand it over to ICR at ~17:45.

Source conditioned nicely overnight at 55kV with a little RF power on. Source gases checked, final cage inspection. Ready to start.

Later... Source is lit. Let it grow.

Later... Lots of beam on FC3 but not a lot on FC6. Beam is broad. Hand it over to ICR for the night as-is.

Source opened, and aluminum components removed. Magnesium components from previous run cleaned and installed. Pumpdown in progress.

Later... Pumpdown looks wonderful. A couple of cycles with partial vent with N2 to help evaporate the methanol.

Later... Power is on. HV at 55kV for the night to condition. No plasma, no beam overnight.

DRAGON has been taking beam since approximately noon on Monday, and finished a little while ago. Feedback I have received is that beam intensity was lower than experimenters' ideal, but quality of the beam was very good. I will run an emittance scan shortly. Then next up: Mg setup.

A lot has happened since the last entry. The source blinked out at some point. Cause cited was a PE short. Actions were taken, to be detailed later. Source was re-lit. Beam on FC6 was unstable yet promising overnight last night. In the wee hours it blinked out again and is out presently. Remotely checked vital signs. The only thing that appears to require immediate intervention is the source gas line, which looks very closed. ICR assisted with a check on the Ar bottle at the OLIS gas rack. Previous state unknown. ICR opened bottle and shutoff valves. Pressures on regulator are nominal. There is zero flow across the flow controller. ICR is fully involved with 8pi beam services, so cannot open the OLIS cage at this time, etc. One of us will come in.

Later...Source is back. ~6pnA on FC6 at ~17:00.

Synopsis: Source support gas (argon) ran out due to leak in source gas line. Remedied. Bottle replaced. Source relit OK. Beam intensity went in steps.

Later... Some gains with EE. Leaving it at 7kV with 400W of MW power.

Source pumped overnight to previous baseline (red trace on attached Stripchart). IOPS conditioned it up to 42kV without a hitch.

Close Ne source gas line and pump out flow controller... noticeable improvement.

Bias conditioned up to 50kV.

Bias conditioning at 58.5kV with MW at 600W. Raising the RF outgassed the plasma chamber for the first while then went quiet again.

Bias set to 55.08kV for 27Al+1 run. Source lit around 14:30.

15:30: IOS:FC3 = 1.9e-5 (no bias); IOS:FC6 = 9.3e-9. It's coffee time.

16:40: IOS:FC6 = 4.9e-9 (attached)) after settling and a few little tweaks. We're just about ready.

16:45: Hand it over to ICR.

Switchover from 58Ni+1/MCIS to 27Al+1/MWS began just after noon. MWS cleaned and fitted with aluminum liners. Pumping in progress. Good leakup curve. All electrostatics checked and operational. Source should be conditioned to at least 55kV at some point. Let it sit at 30kV overnight with 100W on MW.

Last hours and minutes. Going well. Documentation appended. Users have requested beam until noon.

Note: We are using the MWS bias and EE power supplies on the Supernanogan source for this run, to provide source bias and also sputter chamber bias for the Supernanogan.

Beam mostly idle overnight. Things are resuming now.

From MCIS. It looks like things went fairly well over the weekend for them. An interlock glitch on MCIS:IV1 this morning, source pressure went slightly above MCIS:IG1 "Good" threshold. I have suggested to Tiffany that raising the "Good" threshold to 1e-7 might be a good idea. Because we are intentionally running with MCIS:TP3 off, the source pressure is higher. It's right on the edge of the current "Good" threshold. Attached is a trar of the MCIS pressure trend, which looks healthy.

OLIS was switched from 22Ne2+ (MWS) to 58Ni+1 (MCIS). Works like magic. 100epA presently.

MWS online. Beam sitting on FC6.

Mel returned two flow controllers today, borrowed in March and April.

MWS online. Note: A/q display is white. Possible culprit: IOSIOC. ICR will reboot it at first convenient opportunity.

Earlier, Supernanogan was set up with empty canister in preparation for Kr heavy ion run planned for this weekend. Canister and lines pumpdown in progress. However, a FR was issued for MCIS:BP1, which is losing ground pretty quickly. The two MCIS screenshots below were taken some five minutes apart. At this rate, there is no way the pump can bring the system to an operational pressure in time. For good measure, power-cycle BP1 now... it doesn't help.

MWS online. Separator magstab program offline. Check: Kepco is switched off and one lead is physically cut and taped over. That's pretty definitive.

Later... Keerthi has found that the EPICS probe has more diurnal variation than the separator power supply itself, so he disconnected it permanently. There is a USB issue with using our precision Hall probe that will require some expert Linux assistance to resolve.

DRAGON has been taking various species of Na and Rb using the MWS. Run ended this morning. Emittance scan of 23Na attached. Mass scan in progress.

Supernanogan is online with a bit of 12C2+ beam on FC6. Mag stability program is running. Source development to follow.

Hastings Teledyne flow controller lent to Mel.

Controls is working on an interlock issue. Electrical panel MCC-X maintenance is planned for tomorrow afternoon.

Loaned a Horiba SEC-7320 flow controller to Mel. This unit belongs to Friedhelm.

High Voltage cage is on at ~17:43pm

Interlock cleard and HV (10kV) is on at 17:53pm

IOS:SSW failed unexpectedly. No reason found. Came back on easily.

90pA of Ti+7 is running smoothly. 22:05  Feb26th

Small peice of titanium wire is installed and running aroung 100pA of Ti+7 at FC6.

OSAC are OPs taking data.

Small piece of titanium foil 0.0005" thick is installed and running around 100pA of Ti+7 at FC6.

OSAC are OPs taking data.

Klixon at the OLIS bemding magnet is not funtioning properly.

Both EE and SSEE problems were solved. They are working OK now.

2mm diameter Ti was installed to set the optics. Later 0.0005 in thick foil will be installed for real efficiency studies.

Our very best to all of you.

At 5:00 this morning, after a lengthy battle with cancer, Mike passed from this life to his eternal reward. He has left us a great legacy. May he rest in peace.

Development and the quest for gold continue.

Later... Mass scans in region of 197Au33 A/q=5.97, with graph of all theoretically possible charge states in the same A/q region. The thing to note in that last graph is how clean is the region (just left of A/q=6) where 197Au33 is predicted.

Later... Panning for gold ended prematurely due to a decision to end. The reason cited was DSB:MB14.

Development continues in the search for gold. A=197 Present A/q=5.94, which suggests 197Au+33. It could also be a tail of 12C+2. We'll see.

Source development in preparation for Au beam in progress.

Beam development started yesterday. Looks like the HERACLES run, which started Thursday, ended yesterday morning.

Development should continue today. Looks like Supernanogan went through a plasma mode change overnight and settled into a new mode.

The previous 12C2+ development run from the Supernanogan ended Friday morning. Starting Friday afternoon, the Supernanogan was prepared for an upcoming SEBT development using krypton beams. The source was ready overnight. There were some teething pains over the weekend. An A/q=5.71 beam is sitting on FC6 presently. The beam schedule shows an experiment change on Thursday morning.

Later... Some notes about krypton.

Naturally occurring isotopes:
Kr-78   ( 0.35% , 2.0E+21 ) Kr-80   ( 2.25% ) Kr-82   ( 11.6% ) Kr-83   ( 11.5% ) Kr-84   ( 57.0% ) Kr-86   ( 17.3% )

Some A/q values:

• 40/7 = 5.7143
• 80/14 = 5.7143
• 82/14 = 5.8571
• 82/15 = 5.4667
• 83/15 = 5.5333
• 84/15 = 5.6
• 86/15 = 5.7333

Keerthi's mass scans from Saturday:

1. Background scan
2. Krypton scan (note multi-peaks in A/q = 5.7 to 5.75 range)
3. FC6 at A/q=7.3333

Last moments of beam development for SEBT commissioning. Attached is an FC6 plot and the present optics and 1mm slits. Decision was to not do a vertical emittance scan at this time, but proceed with 15Kr development, up next. Before we shut off, one last emittance scan coming up.

Later... Emittance scan with 2.5mm slits (default position setting used) in progress... Done. 101203_1017ILTEMIT.txt. Looks a little boxy... Both raw and cleaned-up versions attached.

Next: Emittance scan with 5mm slits... Done. 101203_1039ILTEMIT.txt. Looks a little more boxy... Both raw and cleaned-up versions attached.

Next: Repeat scan with original 1mm slits and scanner settings... Done. 101203_1104ILTEMIT.txt. It reproduced. Both raw and cleaned-up versions plus scanner panel attached.

Next: Quick look at 16O beams before shutting off...

Accelerator development continues. Save: 101201_2157.snaiosvault. Today's agenda: emittance scans. Attached: overnight beam plus a preliminary horizontal emittance scan 101202_0951ILTEMIT.txt.

Later... First good scan 101202_1016ILTEMIT.txt.

Next... Second scan 101202_1016ILTEMIT.txt with FC at lower gain, due to lots of red in the first scan. Too noisy.

Next... Third scan 101202_1041ILTEMIT.txt, first the raw pic, then filtered a couple of ways.

Scanner parked, and beam on FC6 again. There is interest in doing a vertical scan. This will require physically moving the emittance rig to the perpendicular face of its diagnostics box. Awaiting decision.

Continuing from Supernanogan. Source touch-up last evening.

Commissioning and development continue.

Supernanogan is online. MCIS:TP3 is off. It should be on. It is required for best production of higher charge states.

Some start-up teething pains last night. Decision: Go with the Supernanogan for now. ~20enA on FC6. Save: 101125_1148.snapiosdragon. Also, a CANBUS card on IOS:YCB1A failed this morning and was replaced by Controls.

Source switchover began at ~15:00.

Last day of 85Rb delivery. Save: 101124_1400_snapiostitan. Next up: 12C2+ for SEBT commissioning. We took a few minutes earlier to see if this is available with the source as-is. No such luck. Plan is to shut off mid-afternoon, and prepare to switch over to 12C2+ operation from the MWS.

We are back to running a Rb beam using the MWS. The run started last Thursday, November 18th. The previous Rb run ended on Monday, November 8th, at which point a 12C2+ beam was established, using both sources; the Supernanogan was selected for final delivery to DRAGON. Users reported excellent beam. That run ended last Monday, November 15th, after which time source development ensued. Among other activities, the Supernanogan plasma chamber was opened and cleaned following the 12C run.

12C2+ beam established yesterday from the Supernanogan. Tuning to DRAGON began last evening and is continuing presently.

We noticed that MCOL0 no longer has a valid reading. A quick trar suggests it stopped reading at around 17:00 yesterday, right around the beam hand-off time. Also, after working fine since Controls adjusted it a couple of weeks back, the MCIS:RFS water flow meter began toggling its state again around the same time, and a defeat was required to run the RF.

A good 12C2+ beam was established yesterday from the Supernanogan source, driven by background pressure only; no source gas actively injected. Beam intensity was not sufficient, so we switched to the MWS. 12C2+ from the MWS sat on FC6 for the night, and grew over the time. Plan today: increase the intensity one way or another.

Later... We're going with the Supernanogan for this one. CO source gas set up via MWS gas manifold. Differential pressure over variable leak provides low enough flow. RF scan in progress presently ~15:00.

The 85/87Rb run from the MWS ended last evening as scheduled. The Supernanogan source was brought online (~21:30 Sunday?) and a 12C2+ beam established, first for ICR training then for DRAGON setup.

Beam was used yesterday. Mostly idle overnight. Looks like a plasma mode change happened at around 19:00 yesterday. It happens. Or perhaps just an artifact again. Shortly after, beam was moved to 87Rb, which is where it is right now. Once again, another milestone first at OLIS: 87Rb from the MWS.

Natural abundance of Rb: Rb-85   ( 72.165% ) Rb-87  ( 27.835% )

Later... Beam switched back to 85Rb.

Source ran nicely overnight. ICR team set up a tune into the Polarizer line. Experiment setup is scheduled to start tomorrow morning.

Yesterday we handed over a 85Rb beam to ICR. It will be used for a LEBT run using the Polarizer line. Beam stayed on FC6 overnight. Note the source spark at around midnight, after which the bias current readback was higher. Real or artifact?

Later... Beam status over last couple of hours. Looks like tuning has begun.

85Rb on FC6 overnight. After restarting the source yesterday following development, the beam intensity came back, but it's slightly unstable compared to before. Mag stability program is active.

Later... Work with the source for a while. Improved. Stripchart attached. Time will tell. Save: 101102_14:30.snapiosfc6. Turn it over to ICR now.

The source stayed up steadily over the weekend, with 85Rb on FC6. Not a lot of current, but pretty good for a first pass. More development today. Source settings shown below. As previously noted, the 2.5mm slits are selected. Also, the present IOS tune is for effect, not by the book.

Next up: Try some variations on the source setup.

MWS source switchover yesterday was successful. Leakchecking went well. A small leak on the intermediate section sealed with a snug on the two bellows fixing bolts. The microwave window required cleaning. It tested leak-tight. All good. Pumpdown curve to come. Meanwhile, source was restarted last night. First 85Rb is on FC6 presently. Although OLIS has run Rb beam in the past using the SIS, this is a milestone for the MWS. Development to proceed today.

Later... Here is the pumpdown curve to last night. Base pressure reached less than 3e-8Torr, which is a very good pressure for the MWS. Prepare to shut down leak detector, which has been pumping on the roughing line overnight.

Later... First piece of a comprehensive mass scan. Brings a tear to my eye. Save: 101029_1125.snapiosfc6

Later... Scans completed. Data file. Among other things, the following isotopes were observed:

A/q	Current	Isotopes
14	1.5e-09	14N
15	6.0e-11	15N
16	1.3e-08	16O
17	6.0e-10	17O
18	6.5e-09	H2O, 18O
19	1.7e-07	19F
20	1.3e-09	20Ne
21	7.0e-10	21Ne
22	1.4e-10	22Ne
28	4.2e-09	28Si
29	2.0e-09	29Si
30	4.2e-06	30Si, 60Ni+2
31	1.9e-08	31P
32	4.2e-07	32S
33	1.0e-09	33S
34	3.3e-09	34S
39	7.5e-10	39K
41	5.0e-11	41K
44	1.0e-10	44Ca
45	1.6e-10	45Sc, 90Zr+2
46	6.5e-08	92Mo+2
47	3.2e-10	47Ti
48	7.0e-10	48Ti
51	3.0e-10	51V
53	9.4e-10	53Cr
60	6.5e-11	60Ni
67	4.0e-10	67Zn
69	1.3e-10	69Ga
85	6.5e-10	85Rb
87	2.3e-10	87Rb

Spreadsheet
Scans Details

Attached is a separate scan in the region of 40 to 45, done in two directions. Data file (raw).

Leave 85Rb on FC6 for the weekend, or as long as it lasts! !1.3nA presently with 2.5mm slits in. I have increased the support gas flow slightly.

A controls issue with IOS:BIAS was found yesterday. Controls people resolved it today. MWS source was switched over and prepared for Rb beam. Leakchecking done: tight. Source should pump for a little while longer before energizing. At present, leak detector is attached to the IOS roughing line. Pic attached with IOS:BP1 alternately online and offline.

Note: Source gas hand valve is CLOSED.

A controls issue with IOS:BIAS was found yesterday. Controls people resolved it today. MWS source was switched over and prepared for Rb beam. Leakchecking done: tight. Source should pump for a little while longer before energizing. At present, leak detector is attached to the IOS roughing line.

Later... Noticed that MCIS:TP2 was tripped off. After a couple of tries, it restarted okay. Hmm...

The experiment ran overnight, smoothly, by the looks of it. Beam is on FC6 now, so they're likely done. EOB studies on Mg beam to commence shortly, with source teardown and switchover to Rb beam to follow..

Emittance scans in progress, first at as-delivered settings: 5mm slits. Save: 101027_1102>snapiosfc6

Emittance scans at 26Mg then 24Mg.

Next, go fishing for 85/87Rb in background. Not a lot of fish in this pond... Double-check tune at 24Mg: perfect.

Next up: comprehensive mass scan. Then most likely we will take down the source for clean-up and switchover to Rb beams. Abort due to technical difficulties.

Next up: I just noticed a readable beam at A/q=13.33. Well, that's odd. (We are running 40Ar support gas in the source.) Let's see if it's reproducible. Yep.

Now... IOS bias keeps tripping... Time to investigate... The FUG keeps blowing fuses on reset. But in local mode, it starts and runs just fine. We conclude that its CANBUS card is driving the FUG at full chat on reset. Anyway, F/R#4925.

The TIGRESS run was scheduled to end at 08:30, but has been extended for 24h. The ICR reports that they are getting "good data" with the present beam. Why mess with what works?

We will expect to begin the MWS switchover tomorrow.

Smooth delivery (from OLIS point-of-view) to TIGRESS over the weekend. An SCB RF amplifier failed yesterday and was replaced. Tuning was done. Source is stable.

There were a couple of bias sparks over the weekend, expected during Mg runs. The mag stability program got knocked off at some point. Restart OK.

A 26Mg beam was handed over to TIGRESS last evening. It is 26Mg6+ through ISAC-I and further stripped to 26Mg10+ by the time they get it. Approximately 2.5pnA at FC6.

The MWS was restarted yesterday, and a 26Mg beam re-established. ICR set up into ISAC-II overnight, and tuning to TIGRESS began this morning. Note the experiment change due to circumstances at the RIB targets.

MWS ran fine overnight. It was shut off this morning to investigate bias sparking issue, noted on FR#4894. The two MCIS turbopump controllers are displaying gibberish on their front panels this morning. There was one spark since yesterday, around 19:15 last evening. Due to a failure at ITW - see here and here, a proposal is made to deliver 26Mg to the experiment for data.

MWS operating nicely.

MWS is producing 26Mg, presently parked. It was used over the weekend for TUDA tuning.

Source is running nicely. Hand-off to ICR occurred ~Wednesday night. Setup done overnight. 26Mg (PE is now on at nominal value) is selected presently; blue trace on Stripchart.

Source conditioning most of today, to 59kV. Striptool attached. Reset to 26Mg tune at ~16:00.

Source switchover in progress on WP#2010-10-12-1. Magnesium material installed into MWS. Pumpdown in progress. Leakup rate OK. Turbos on.

Later... Pumping going well. at 1e-6 by ~16:00.

Beam from MWS quietly sitting on FC6 awaiting tune checks to TIGRESS. Next experiments up are 26Alg5+ to TUDA and 24Na5+ to TIGRESS. So we are poised for source switchover to provide 24/26Mg pilot beams from the MWS.

A 20Ne1+ beam from the MWS was established on Friday. Line tuning began Friday evening. A tune to the front of the SC LINAC was in place by Saturday. Tuning through was delayed by SC tank conditioning.When the LINAC is ready, tuning to TIGRESS will resume, expected today.

The September Mini-Shutdown is now a memory. The few days available to OLIS were used for MCIS Development on 197Au. Productive. A 197Au34+ beam sat on FC6 overnight. The program ended Friday, at which point a 20Ne1+ beam from the MWS was established, and line tuning commenced.

Supernanogan on overnight, in the search for gold. A trace of 197Au34 observed this morning. Development continues.

A/q: 5.7941

FC6: ~500epA

Bias: 10,876V

EL: 4274V

Sputter source bias: 1262V

RF frequency: 13.60175 GHz

RF amplitude: 10dB (~16W FP)

MCIS:IG1: 6.8e-8 Torr

DRAGON continues to take MWS beam.

Later... 14:00 EOB. Prepare for Mini-Shutdown.

MCIS Development finished Friday evening. OLIS switched to MWS operation and setup began for 4He1+ delivery to DRAGON. Beam handed over to experiment last night.

Today's agenda: RF frequency scans and generally getting a feel for the new sputter source.

Mass scan plots in region of 197Au25+ attached below, taken with and without the sputter source on. Matlab post-processed pics to come shortly.

A new sputter source was installed onto the Supernanogan. A wire of Au is installed in the source. Mass scans this morning with source at equipotential. Source patched to MWS EE supply and biased to ~1kV tunable. That makes a significant improvement in intensity. Beam at FC6 is 197Au24+ presently.

The 16O3+ DRAGON run just finished. MCIS Development begins this morning for a few days. The goal is to install and characterize the new sputter ion source.

Below are vacuum pics before and after closing MCIS:IV0. There was a bit of a spike during closing. All three turbos switched off. TP3 is down now.

Later... Keerthi requests we look at 16O7+ production as a measure of source performance. Done. Chart appended below, with source panels. Mass scan next.

MWS is running nicely. SCC development continues. This is scheduled to end on this coming Tuesday morning. It will likely continue for a couple of days, after which there would be a beam switch to 16O2+ from the MWS for TUDA-II setup.

Beam used into last evening, then idle overnight. Nice and stable. Maintenance Day for the cyclotron and ISAC.

Beam idle overnight, and grew nicely. Source tweaked up and throttled back a little while ago. SCC development expected to continue today.

We have a request for changing over the source to 4He1+ operation from the MWS.

Later... OLIS opened. Canister purged with N2 and pumped via IOS, then valved off and disconnected. ICR has restored a recent 4He1+ tune.

Beam ran quietly over the weekend, with the anticipated intensity drop-off. Source gas canister at ~15"Hg and IOS at 3.3e-7 presently. Several DRAGON energy changes were done as planned.

Later... at ~09:45 DRAGON is done.

First beam appearing on FC6 presently, after the source pumped overnight. Source gas valving set up earlier this morning.

Later... We have a whopping 5nA of 35Cl1+. We expect orders of magnitude more. Mass scans and investigation in progress.

Later... Another scan after some source gas changes. Much better. 35Cl+1 = 575nA 35Cl+2 = 3.5pnA with 1mm slits.

Neon support gas hand valve is closed. Source wuill require expert intervention to reignite, if there is a power bump, etc.

Later... Final tweaking done. ~10enA on FC6 with 1mm slits in, and ~23enA with 2.5mm slits in. A Stripchart of the last little while, plus present IOS tune and skimmers. Hand over to ICR at 13:25.

OLIS off Wednesday morning for source changeover from 16O3+ to 35Cl2+. We have elected to use the MWS for this run. Supernanogan is removed from OLIS and parked at its service dock. Lots of leakchecking done on both sources. Both sources are under high vacuum presently and improving. MWS will be ready to start in the morning.

Delivery of 16O3+ for TIGRESS "buddy beam" purposes ended early Tuesday morning, followed by CSB setup as an ion source Tuesday day. MWS behaved very nicely. Beam off Wednesday morning for switchover.

Beam idle for most of the weekend. Some ion source ups and downs, in part due to a WFB setting on the edge. Tuning began last evening. Some funny business overnight with apparently disappearing and returning beam.

Supernanogan is online. Setup done last night. There is room for tweaking, but stable 3enA on FC6 of 16O3+ presently. We'll see if ICR has room for tweaking before handover to users. Yes, we have clearance.

MCIS RF scan in progress.

MCIS vacuum: 8.17e-8 Torr

IOS vacuum: 3.15e-7 Torr

Later... No-one has called so far for the beam, but they can have it anytime. Right now, about 15enA on FC6 with an RF frequency that is midway between lots of current and ruler-flat stability. There are other choices too.

So... the long-awaited word to switch OLIS beams and sources finally came through... at 17:45. Luverly. Anyway, we're on it. Basic idea: 4He1+/MWS -> 16O3+/MCIS. Users only care about A/q being as close to 72/13 as possible using standard beams. Last moments of 4He beam shown below. MWS is running very nicely.

Later... Supernanogan is up and delivering 16O3+. Note that MWS solenoid valves and flow controller are just so for this to be possible. Leave them alone.

Beam in use intermittently.

Source switchover went quite well yesterday morning. About 6nA of beam on FC6. Beam idle overnight. Tuning has resumed now.

Today we switch from 74Ge1+ to 4He1+, about as wide a switch as we've done at OLIS. We will use the MWS for the 4He.

Later... sources lit. First mass scan attached. Intensity is pretty low for now.

Later... MWS optimized better. Optimal He gas pressure is somewhere between zero and the leakthrough rate on the flow controller set at zero. Stripchart attached. ICR will play with source and beam as it is for now.

Later... ICR has found a few enA in there, and vested parties are happy with the beam.

Beam is sitting on FC6 presently. Good source operation over the weekend. Some pics to come. RIB delivery to TITAN ended at 08:30 this morning. OLIS is scheduled for a beam switch tomorrow morning.

Later... A power bump knocked us out cold again. It appears that the Safety Enable bit was lost.

Beam remained on FC6 overnight. Beam was used for a tune check this morning. At noon today beam was switched to 4He.

Later... Outcome of 4He development with Supernanogan: beam comes with other isotopes. e.g. 12C3+ and 16O4+. Verdict: 4He1+ beam is better produced with the MWS.

Later... By request, set up source for 74Ge beam again. ~30pA on FC6 by ~midnight.

The Supernanogan is producing 74Ge using the heater source, a first for the Supernanogan. Development done over the last couple of days and completed yesterday. Tuning using mass 76 (76Ge or 76Se?) was done last night. Energy is set at 12.24kV, same as previous 12C2+ run. Beam is being used as TITAN pilot beam for their 74Kr run.

Our work permit to leakcheck the Supernanogan and IOS was signed this morning. The source is off presently, and work is underway. The 12C2+ beam was not used overnight.

Beam from the Supernanogan remains on standby for TIGRESS pilot beam. There were a couple of source trips over the weekend, at least one a consequence of a power bump that took out a few other things too.

We have had a couple of pending work permits in the queue for a while. One is for germanium beam development, and one is for OLIS leak checking. The benefit of carrying out this work is assured delivery of 74Ge for the upcoming TITAN run, rescheduled to begin Wednesday. Note that if a leak is found and repaired on the Supernanogan side, there will be a minimum of three days pumping required before sufficient vacuum will be achieved to generate multi-charge ions.

Tuning to TIGRESS is continuing. There is a full expectation that they will take RIB over the weekend.

As it stands, the beam schedule shows switchover from TIGRESS to TITAN on Sunday evening. For a couple of reasons, it would make sense to move that time into Monday or so.

OLIS is set up for 12C2+ delivery, with about 13enA on FC6 from the Supernanogan source presently. Beam was reasonably stable overnight, and should condition out better over time as well. Initial tuning into ISAC-I is planned to begin this morning.

A source switchover day was negotiated, with a goal to provide 12C2+ beam. As a practical matter, it's been an OLIS Maintenance Day, at least for the morning. Controls installed a cable to provide remote reset capability for the OLIS Enable interlock panel. However, it did not perform as expected first time, so Controls has elected to pursue this another time. Meanwhile, the remote cable is at the rear of the OLIS Enable panel, ready to be connected next time.

This morning, Keerthi started the Supernanogan, and established (evidence of) initial 12C2+ and 74Gen+ beams from it. Maintenance concluded around noon, and beam development resumed. Goals: Find clear 74Ge and 12C2+ peaks.

Beam used sporadically over the weekend. Note temperature response in beam. A power bump occurred at about 10:00, knocking out OLIS. It was challenging to come back to where it was before.

Source drifted overnight. Operators made a slight correction to silence an alarm. I have tweaked this up. Shown below are before and after. Marco believes present beam is unstable. I will see if I can tweak up the intensity, and perhaps that will satisfy all requirements.

Later... ~13:00 this is just about as good as it gets. Stripchart of the last couple of hours plus current excellent source parameters appended below.

Beam idle overnight. Source conditioned and changed a bit. Slight tweaking required to bring it back to stable.

A 16O1+ beam from the MWS is being used for SCC development and commissioning by agreement. Some sideshows getting there.

Later... At approximately 13:15, some event, a bias spark, it appears, took out a number of devices, most of which IOPS reset. The FUG blew a fuse on startup. Replacement OK. However, there remains an interlock light on the IOS:BIAS panel with no apparently unsatisfied interlocks showing. Controls is checking now (~15:00). Cause appeared to be an old version of a startup script on IOSIOC. The script has been updated so that this particular fault should not recur. Source restarted okay, but it took some doing to get the separator magnet back. It is still not optimized, but Marco can take it from here.

Source pulled down for Mg removal and cleanup. Done. Supernanogan refurbishing of MCIS optics complete, plus a comple of other items. Opened joints leackchecked and okay. MCISIOC was in a partial state, where devices worked but not interlocks. It turns out that Controls knows about this. Msg to investigate in the morning. Meanwhile, MWS is up with a 16O1+ beam on FC6 presently. FYI, the vacuum pumpdown curve during leakcheck and startup operations.

Photo-finish for TIGRESS this morning, apart from a cavity trip at around 6:00 a.m.. The MWS is running very well. Some EOB activities underway presently.

Plan for today: MWS pulldown for Mg removal and cleanup. If feasible, we will install the Supernanogan into the OLIS cage as well.

Beam was switched from 24Mg5+ to 26Mg6+ on Canada Day. Also, the source blinked out on Saturday. Remote restart okay. Source is running well.

Supernanogan maintenance continues. MCIS optics module was reassembled last week and installed this morning. Also a section of wveguide was replaced using a specially prepared section. TBD: MCIS:DB1 top place assembly, pump, then reinstall the cart into the cage if possible.

Later... solid target chamber installed with germanium powder, in preparation for an upcoming run. MCIS:DB1 is assembled. Volume is under high vacuum now. Leak detector also set up in preparation for checking tomorrow.

Delivery / standby continues.

Delivery to TIGRESS has begun. Beam from the source looks perfect. Looks like happy times for them. The plan is to eventually deliver 24Na5+ via the CSB. Maintenance Day for the radioactive lines is in progress now.

Later... This is about as good as it gets for magnesium beams from the MWS. Attached are screen shots of the source setup.

Delivery looks like it was pretty smooth over the weekend. TIGRESS expects to receive 24Na from ITW via the CSB this week. Yield goes today.

Tuning into ISAC-II was done yesterday, and continues today. The source was idle overnight. There were a couple of magnesium hiccups. Beam is looking fine right now.

Mass change yesterday morning from 26Mg1+ to 24Mg1+ from the MWS. It was tough to get stable beam from the source, and there are signs of Mg plating out on stuff. Keerthi was here last evening and again overnight to open the source and clean it up. Good job.

Later... There were a couple of power bumps over the lunch hour. One took out OLIS, the other didn't. Yes, the IOS Enable panel had to get a local reset yet again. I have an ECR submitted to Controls for UPS support on the 24V power supply that feeds it. Source restarted reasonably okay.

Beam was redirected to TIGRESS yesterday. RIB delivery to TIDA-II was rendered impossible due to a failure in the target or module. We have a verbal request in place now to change mass from 26Mg1+ to 24Mg1+. Attached is a plot of beam overnight on FC6 prior to changeover.

Beam waiting quietly on FC6. There was a power bump on Friday just after noon that tripped the world. Keerthi restarted OLIS. Beam never really came back to its former glory. We'll see if there might be an opportunity to touch it up.

Later... Mag stability program reset required. Internal field probe is at its limit. Hmmm... Meanwhile, revert to EPICS field probe, which unfortunately is not temperature-compensated.

TUDA-II began taking beam around midnight last night. Beam on FC6 for a good part of the night. Steady as she goes.

Beam idle overnight. Beam is being used as a pilot beam for this run. Source was knocked off by a power bump on Monday evening. Signs are that the root cause is the same as last time, loss of 24V to the IOS interlock panel.

On Saturday we opened the MWS and set it up for Mg operation. Everything went well. We are using the pair of half-moon Mg metal plates together with a thin Mg foil liner inside a bottomless quartz liner. Tune setup for HEBT/SEBT operation set up yesterday. 26Mg is selected. MCOL3A/B tuning for true centre is in progress right now while there is opportunity.

After EOB activities from 15N4+ run that ended this morning, we have begun preparations to switch over the ion sources. Turbos off just after 11:00. We have Mg source material ready. We will be using the MWS ion source. Due to the requirement to run the source at 53kV, we will also remove the Supernanogan cart from the cage as a sparking precaution.

Later... MWS backplate removed and reworked for Mg operation. Buttoned up and under high vacuum again now. Currently 2.5e-6 Torr at ~14:00.

Later... Plasma is lit. 24Mg begins to be visible after a while.

Note: Supernanogan cart is in its service dock.

Delivery to TIGRESS ended this morning as scheduled. ICR took nice emittance scans and is completing a target snapshot now. Canister still at -22"Hg and MCIS at 7.3e-8 Torr.

Chance to snap some wirescans. Attached.

Delivery of 15N4+ to TIGRESS continues. Source gas canister is still at ~-22"Hg, and MCIS pressure is 7.2e-8 Torr. ICR reported intensity drops a couple of times this morning. The attached Stripchart suggests beam from the source is down to about a third from status quo. We will look into it now.

Delivery to TIGRESS began yesterday or so. ICR reported beam intensity drops overnight. I'll look at it presently. Meanwhile, canister pressure is still ~-22"Hg and MCIS pressure is 7.09e-8 Torr.

Later... Check source at request of ICR. It looks mighty fine. Slight tweaks on RF, but really no great change. FC6 was and is 200enA, though it was around 80enA this morning.

Setup into ISAC-II began last night. Tuning is in progress now. Beam on FC6 overnight. Canister pressure is -22"Hg and MCIS pressure=7.1e-8 Torr. Pressure showed correlation with temperature. It is overcast today and cool, suggesting a fairly flat response today.

User tuning began Sunday night. Beam physics expert chose to retire the IOS:Q1 defeat, as he did not know until yesterday that it existed. He discovered it after attempting to retune yesterday around noon from scratch and making a mess, notwithstanding Keerthi's clear instruction to leave it alone. He also does not know that Rick developed a tune for this, which provides cleaner transmission than the "book" tune. Pity. Presently there are some 75enA of beam at FC6. That should be enough. Note that there were some 90enA with the "defeat" tune in place, prior to changing the IOS tune. Canister is at ~-22"Hg, and MCIS pressure at ~7.0e-8 Torr at ~09:00.. ICR is tuning through presently.

Keerthi set up the Supernanogan for 15N operation and destined for TIGRESS, using two source gas options: a miniature bottle of enriched 15N2 and a canister with a charge of research-grade 14N2. The canister is similar to the one we used for the 33S run to DRAGON, which finished Saturday morning. Canister is at -22"Hg and MCIS at 7.27e-8 Torr. A couple of beam stability tests were conducted at 15N4+ and 15N6+. Bob can choose which one he prefers to use. 15N4+ is selected and tuned through IOS up to the RFQ presently (~10:30 am).

Later... Bob reported at the Beam Delivery meeting that the 33S6+ beam was a very nice beam. We appreciate hearing it.

Delivery of 33S6+ continues to DRAGON for the final day. Some online tuning of the line overnight. Source gas canister pressure remains at ~-20"Hg, and MCIS pressure is at 7.1e-8 Torr.

33S6+ delivery to DRAGON continues until Saturday morning. All the signs are that beam is excellent. Source gas canister is still at ~-20"Hg, and MCIS vacuum is at 7.0e-8 Torr.

33S6+ delivery to DRAGON continues. It is Maintenance Day for everybody else today. Source gas canister pressure = -20"Hg. MCIS pressure = 7.7e-8 Torr.

33S6+ delivery to DRAGON continues. Looks like there was an RF tweak overnight. Source gas canister still at ~-20"Hg. MCIS vacuum at 7.4e-8 Torr.

Delivery of 33S6+ to DRAGON continues. A couple of RF tweaks done over the weekend. Source gas canister pressure at -20"Hg. MCIS pressure at 7.3e-8 Torr. At this rate, we could deliver 33S until approximately forever.

Beam tuning in progress. Source gas canister at -20"Hg. MCIS pressure at 7.62e-8 Torr.

33S on FC6 overnight. Preparing to send beam to DRAGON now, and confirm isotope.

Source gas pressure gauge on canister = -20"Hg. MCIS pressure = 7.8e-8 Torr.

Some 3enA of beam on FC6 presently. Let it sit.

33S spectrum is saved as 33S_spectrum.dat 

after 24 hours background spectrum saved as "BackgroungNo33S003.dat"

RF Amplitude :7.767 , RFoutput power= 5W, Output power (dB)=36.4

after 24 hours background spectrum saved as "BackgroungNo33S002.dat"

RF Amplitude :1.553 , RFoutput power= 0, Output power (dB)=0  

Tried to see the background before 33S installation. Found few problems: MCIS:YCB1 does not hold more than 58V.

Very difficult to transport the beam without YCB1. Need to find a solution. Open and fix it is not an option even though we have a ready spare. It will take two weeks to get the vacuum back.

------------------------------

Outgoing TIGRESS experiment was the occasion for another ISAC milestone, 8MeV/u through the SCC for the first time just around midnight last Friday, May 21st. This also represented the first 8MeV/u beam to an experiment. And we can proudly say that OLIS beam was used. TIGRESS run ended at 08:30 as scheduled. Attached is a trar graph of beam on FC6, snapped periodically throughout the run. As before, you can see a small daily variation likely related to temperature of NA-LCW. There were reports of HPL tests this past Thursday and Friday. Evidently no effect over here.

ISAC-I tuning done yesterday. TBC today into ISAC-II. Beam very nice overnight.

Prepare to switch beam from 22Ne2+ to 20Ne1+. Skimmers from 22Ne2+ run shown below. Table of tune options below. We will be using the Rick Tune.

Device	Present Tune	Scaled	Scaled		Rick Tune	Scaled		Web Tune	Final
	22Ne2+	20Ne2+	20Ne1+		25Mg1+	20Ne1+		20Ne1+	20Ne1+
IOS:BIAS:VOL.VAL	22440	20400	40800		51000	40800		40800	40800
IOS:EE:VOL.VAL	1072	975	1949			3064		3064	1419
IOS:EESS:VOL.VAL	1810	1645	3290			0		0	0
IOS:XCB1:VOL.VAL	225	205	409			0		0	500
IOS:YCB1:VOL.VAL	268	244	487			0		0	140
IOS:CCB1:VOL.VAL	500	455	909			0		0	500
IOS:B1A:POS:VOL.VAL	3301	3001	6001			5693		5693	5933
IOS:B1A:NEG:VOL.VAL	3845	3496	6991			5693		5693	5933
IOS:XCB1AW:VOL.VAL	1658	1507	3014			4362		4362	3660
IOS:XCB1AE:VOL.VAL	2242	2038	4076			4362		4362	3660
IOS:YCB1A:VOL.VAL	412	375	749			0		0	340
IOS:Q1:POS:VOL.VAL	1215	1104	2208		-2425	-1940		0	1113
IOS:Q1:NEG:VOL.VAL	1215	1104	2208		-2425	-1940		0	1113
IOS:Q2:POS:VOL.VAL	148	134	269		-1115	-892		1428	892
IOS:Q2:NEG:VOL.VAL	148	134	269		-1115	-892		1428	892
IOS:Q3:POS:VOL.VAL	786	715	1429		0	0		2570	0
IOS:Q3:NEG:VOL.VAL	786	715	1429		0	0		2570	0
IOS:YCB3:VOL.VAL	397	361	721			0		0	500
IOS:MB:CUR.VAL	148	135	270			280		280	277
IOS:YCB4:VOL.VAL	316	287	575			0		0	470
IOS:CCB4:VOL.VAL	300	273	545			0		0	300
IOS:Q4:POS:VOL.VAL	1384	1258	2516		1333	1067		3392	1067
IOS:Q4:NEG:VOL.VAL	1384	1258	2516		1333	1067		3392	1067
IOS:Q5:POS:VOL.VAL	1254	1140	2280		0	0		2232	0
IOS:Q5:NEG:VOL.VAL	1254	1140	2280		0	0		2232	0
IOS:Q6:POS:VOL.VAL	0	0	0		3225	2580		0	2580
IOS:Q6:NEG:VOL.VAL	0	0	0		3225	2580		0	2580
IOS:YCB6:VOL.VAL	290	264	527			0		0	300

Saved tunes: 100518_1113.snapiosfc6 (strict) & 100518_1128.snapiosfc6 (tweaked). Emittance scan attached.

At noon, beam handed over to Sophia. She has questions about the defeats associated with the Q3 failure last year. Checking... done.

Summary of Q1/2/3 wiring status right now:

• Defeat remains on Q1.
• Q1+/- cables swapped at power supplies.
• Q2 output is normal (+ drives L/R and - drives T/B) and is opposite to Q1 and Q3.
• Q3 output is normal (+ drives T/B and - drives L/R).
• All wiring at DBs is normal.

Sophia is continuing her tuning using IOS tune as provided.

Later... Sophia reports that this beam transports nicely. That said, the IOS tune is a little different now. Compare attached below.

EOB for SEBT1 run at 08:30, taking 11Li from ITE and 22Ne2+ from OLIS when needed. Attempted emittance scans last evening, but no data showed, and no more time to investigate. So be it. Another time.

Last day of this pilot beam to TUDA-II. Expect a beam switch tomorrow for sake of TIGRESS.

Attached is Stripchart of weekend beam operation. Pretty nice indeed. Top trace (red) is Q3 skimmer, representative of total beam out of the source  Blue trace is 22Ne2+ on FC6 with magnet field stabilization program active. Brown trace is NA-LCW temperature as measured at exit of Supernanogan plasma chamber. Note an inverse trend against ambient temperature. Something to investigate at some point.

MWS continues to provide 22Ne2+ for pilot beam use. Beam quietly sitting on FC6. Stripchart attached. Also, Supernanogan plasma is on at low RF power for conditioning.

Beam continues to be reserved for E1147 pilot beam use. Beam was nice and stable overnight, as expected. Beam (blue) followed source (red), independently of ambient temperature, roughly reflected in the nearby Supernanogan plasma chamber temperature (maroon).

Later... at 10:14 today there was a sitewide power bump due to an HPL test. It tripped the cyclotron and one isolated ISAC ion gauge. The ICR operators saw the bump in the lights. OLIS went through it transparently, a fruit of a Maintenance a few weeks back.

Later... at around 17:00 I started the Supernanogan plasma. It is at low RF power for conditioning. HV is off.Gate valve into IOS remains closed.

Back to pilot beam status as of around 18:00 last night. A couple of sideshows through the evening. ICR made an elog entry about the IOS:MB field stability program here. But the information shown is inconclusive. As noted in a work permit, Magstab is in fact using our own Hall probe for reference. Unlike the EPICS Hall probe, ours is temperature-compensated. So two outcomes are certain:

1. The EPICS field will vary substantially as ambient temperature changes throughout the day.

2. A/q will vary by a proportionate amount, because it uses the EPICS field value in its calculation.

During the day today, ISACEPICS1 went down for a while, as seen in the attached Stripchart. On that same chart, you can also see the real stability of the separated beam. It varies directly as a function of the source itself, visible in the Q3 skimmer.

Later... Stability program is following source just about perfectly. Updated Stripchart (blue = FC6, red = Q3 skimmer) attached.

Leak checking on the Supernanogan continues today. We are preparing for an up-coming 33S run, for which we want "perfect" vacuum. We're close.

Later... MCIS backing line is now running on leak detector only. Calibration in progress... Done.

There was a short MCIS vacuum excursion at ~09:15. There were two similar ones overnight. Probable cause: sealant outgassing.

Later... MCIS leakcheck tested excellent. Our fix was good, and there were no signs of a leak after all in the bellows area. We are good to go.

Next item: IOS leakcheck if possible. At somepoint we also want to test out the solid target tube on the MCIS plasma chamber.

Later... IOS leakcheck in progress. Leak found at water feedthroughs on DB3 and touched up with same sealant as above. Sealed. Continuing down the line...

Later... We determined a small leak on the top flange of IOS:DB6, which we were able to help from outside. We also observed a significant gas loading from downstream of IOS:IV7. It is indeterminate at this time whether or not there is a specific leak. However, we also observed a fairly high pressure downstream of ILE:IV6. Closing that valve, however, had no effect at IOS.

At about 16:45, Colin requested beam for an energy check. We are doing a last leakcheck between IOS:MB and IOS:IV7 before we close it down and prepare for beam.

At 1about 17:15, MWS lit. >2enA of 22Ne2+ on FC6.

By agreement, the source came down this morning for continuing Supernanogan development. Main event: leak detecting.

Later... Robert and Tim lead leak detectors. Synopsis: A minute leak at waveguide flange on plasma chamber. We decided to seal it with a drop of vacuum sealant. Worked like a jet. Once Supernanogan beams are done for this beam schedule, we will remove the waveguide and re-machine and weld the flange. We also believe there is a minute leak at the bellows joining MCIS and IOS. TBC.

Supernanogan development, mainly for the sake of the upcoming 33S run, took place for a little while on Friday. It was expected to go through tomorrow (Tuesday), but we got the call for beam on Friday evening just before the Canucks game started. So it's up again. The beam was used for a while on Sunday to check beam energy.

Supernanogan development for 33S started. All MW and MW and MCIS power sypplies are off.

Gas for microwave source also closed from hand valve

Later... separator field stability development. Local Hall probe is online. Let it cook.

Beam from MWS remains quietly sitting on FC6, on standby for pilot beam use to SEBT1. The cyclotron is still down with cryogenerator issues. Latest prediction is first protons this evening.

Beam on standby for pilot beam. Cyclotron is still down with vacuum troubles since ~03:00, so no RIB to ISAC.

Beam from MWS continues for pilot beam use into SEBT1. There are cyclotron issues with cryogenics, so 11Li delivery from ITE is suspended temporarily.

Later... we purchased a small UPS for the MCISRFIOC server. It arrived yesterday. After overnight charging, we installed it today. This is in response to the hardware failure a couple of weeks ago.

Beam was switched on Friday morning from 16O1+ to 22Ne2+. This time it's a pilot beam for a 11Li experiment.

Mid-morning the source was switched over from 16O1+ to 22Ne2+ operation for a new experiment. OLIS will be used as the pilot beam during this 11Li run to SEBT1/TUDA-II.

Delivery to S1151 went quietly overnight for their last few hours. The run ended at ~08:30 as scheduled. Marco and ICR did some EOB checks. Also, a quick EOB emittance scan is attached. There were problems with the beam tune save files, since resolved. Among the last ones are 100430_0918.snapiossebt2 (missing SEBT optics) and 100429_2023.snapiossebt2.

Another quiet night of beam to S1151.

Beam delivery continued nicely through the night.

Yesterday Controls repaired and reinstalled the MCISRFIOC computer. It is working well. More details to come.

Nominal beam operation to SEBT2 overnight. A chart of beam over the last few days is attached. There is a step change in the separator field right around midnight. Although the archive does not show it, in fact this was adjusted at 23:54 last night.

Later...MCISRFIOC PC up again, with many thanks to Shawn @ Controls. The black MCISRFIOC computer, atop of the IOS racks, was found to be dead a few days ago. We originally thought that this was a consequence of last Monday's power bump. However, the attached archive plot suggests that it in fact failed on April 21st. Controls confirmed extensive hardware damage, and rebuilt the machine. It is up again now, and operational as it was before. I ran the MCIS RF and did an RF scan for good measure. It all works.

Our first experiment of the year started right around midnight last night, after extensive tuning. As I understand it, S1151 will confirm the age of the universe. The MWS source performed flawlessly over the weekend.

Marco and experimenters are busy at it, tuning the DTL. Regarding the source, he is "happy as always!" Well, that makes at least two of us. After this segment of tuning is complete, then he will move on to setup for the upcoming S1151 run at SEBT2 on Sunday.

Accelerator development continued this morning. Beam from source was reported to be "good". ICR showed me their long-term Stripchart of our beam. There is a clear daily correlation of beam intensity with weather. Interesting. Beam idle on FC6 since ~lunchtime. I took the opportunity to do a little magstab development. The server now runs Konstantin's ser2net patch which fixes the USB port name assignments at boot time. This is a common issue in linuxland, it turns out.

Beam up as of last evening. Controls performed some network upgrades today, which impacted beam operations. One glitch on our side: OLIS:MB drive bit was lost. Fault report. Otherwise, all's right with the world, and Sophia has resumed accelerator development.

Maintenance Day for OLIS started late yesterday afternoon. Source up at end of the day. See attached Stripchart and in particular how the source (blue trace is beam at FC6) came back to its nominal state within a reasonable time. Maintenance TBC after lunch.

Later... Hardware maintenance complete. Source HV and source gas tests followed by source startup around 16:30. Next up: magstab development.

Later... Magstab development done for this set. System up and ready for accelerator commissioning and development in the morning. Attached: starting mag field plus a Stripchart of the day.

Just in: an active work permit for OLIS maintenance. Underway through tomorrow (Tuesday) evening.

Save: 100416_2339.snapiosvault

Later... done for today. Source is on for the night.

Development on Friday; idle over the weekend. Stripchart attached.

Meanwhile, there was a power bump at around 09:30, and the source went out. Restarted OK.

Beam development through accelerators continues today. Beam was rock-stable overnight.

Yesterday's RF troubles in ISAC-I are reportedly solved. Beam development is expected to resume this morning.

Beam reserved for continuing accelerator development, but there are some ISAC-I RF phase troubles. However, maintenance was not permitted today... until just now. Too late for today.

Accelerator commissioning has resumed for the day. Beam was nice and stable overnight. See attached Stripchart.