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.

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.

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.

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.

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.

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.

Beam delivery continued nicely through the night.

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

Another quiet night of beam to S1151.

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.

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.

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

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

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.

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.

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.

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.

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.

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.

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.