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 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 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.

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.

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.

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 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.

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.

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.

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.

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.

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

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

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.

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

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.

Attached is the scheduled work for OLIS next week.

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