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.