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.

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.

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.

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.

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 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.

Source setup took place earlier this morning.

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.

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.

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.

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.

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.

Source switchover began at ~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.

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.

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.

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.

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

Commissioning and development continue.

Continuing from Supernanogan. Source touch-up last evening.