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2L14 Partially ramped up by Ops

1 day 19 hours ago
Log Number: 4472352Logbook(s): Entry Makers: deirBody: 

Only cavity 1 is at the ODVH.

Cavity 5 was marked Not Ready in SRM. Recovered at 4 MV/m and upgraded to Checked.

Cavity 3 started to SOS above 9.5 MV/m. Tried tuning it, did not help. RATN is currently sitting at 1. Reduced GSET to 9.0 MV/m.

Set LEM REQ Heat to 80W.

deir

2L08 Checked out by Ops

1 day 19 hours ago
Log Number: 4472349Logbook(s): Entry Makers: deirBody: 

On and soaking at 4 MV/m. Updating SRM.

Cav 8 had a recent RFCM swap. Attempted OLT but GMES and PMES became unstable with loops closed. Ops-PR'd.

deir

2L12 Ramped down by Ops**

1 day 20 hours ago
Log Number: 4472346Logbook(s): Entry Makers: deirBody: 

I mistakenly thought this zone had already gone through the initial HCO. After checking SRM, it has not. Reduced gradients to 4 MV/m per cavity and adjusted LEM Heat accordingly. Updating SRM.

Also noteworthy...I was able to recover Cav 1 without issue. RFCM was replaced on 2/17.

deir

2L15 Ramped up by Ops

1 day 21 hours ago
Log Number: 4472344Logbook(s): Entry Makers: deirBody: 

Currently soaking at ODVH's. Checked a hypothetical LEM for the calculated gradients and LEM REQ Heat values. LEM's calculation had the zone pushed to its ODVHs, so the LEM REQ Heat value was accurate.

Will adjust LEM Heat when the zone is dropped to Target GSets.

deir

2L16 ramped to ODVHs

1 day 21 hours ago
Log Number: 4472343Logbook(s): Entry Makers: msmithBody: 

Cav-4: I brought this up to the 8 MV/m ODVH value but noticed a KMAI warning. Lowered to 7 for now (Fig.3)
Cav-5: CWVF faults when over 7.5 MV/m (Fig.4). Leaving at 6.5 for now

msmith

2L10 Ramped up by Ops

1 day 22 hours ago
Log Number: 4472341Logbook(s): Entry Makers: deirBody: 

Letting zone sit at ODVH for the rest of the shift. Compared current GSETs to a hypothetical LEM. LEM wants to set them a bit lower than the ODVH with a 42 W LEM REQ RF Heat. For the time being I have set LEM REQ RF Heat to 50W.

The archiver value is unreliable as we had all but cavity 3 online at the end of the last run. Currently half the zone is bypassed.

deir

Injector Work Summary

2 days ago
Log Number: 4472335Logbook(s): Entry Makers: bschaumlBody: 

After discussion with Jerone and Reza we decided that a good path forward would be to tweak some of the early matching quads to move a presumed waist out of the quads used for collecting emittance data at IHA0L03. Looking at the 0L04 viewer, I tweaked MQJ0L02 and MQJ0L02A with several MQJ0L03A setpoints representative of the low, middle, and max K1 values that Zig-Zag would use. Fig's 1-3 show these MQJ0L03A K1 values with MQJ0L02A set as Jerone left it, and Fig's 4-6 show the same K1s with my new MQJ0L02A setpoint.

bschauml

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