Aggregator

Log Number: 4472353Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: System UN-Masking for: BeamLossMonitor
User: msmith
Areas: Injector

BeamLossMonitor Devices:
ILM0I07
ILM0L01A
ILM0L01B
ILM0L02
ILM2D00A
ILM2D00B
ILM0L04A
ILM0L04B
ILM0L05
ILM0L06A
ILM0L08
ILM0R01
ILM4D00
ILM0R03
ILM0R04
ILM0R06
ILM0R08
ILM0R09

Log Number: 4472352Logbook(s): 

• SRFLOG
• ELOG
• RFLOG

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.

Log Number: 4472351Logbook(s): 

• SRFLOG
• CLOG
• ELOG
• RFLOG

Entry Makers: deirBody: 

All except Cav 2 at ODVH. Strong response in WG vac if I push it further. Will give it a day to sit.

Log Number: 4472350Logbook(s): 

• SRFLOG
• CLOG
• ELOG
• RFLOG

Entry Makers: deirBody: 

Found cavities 3, 4, 7 at 0 GSET but no log references. Cav History shows RF good, so I recovered them.

LEM REQ Heat set to 30 W.

Updating SRM.

Log Number: 4472349Logbook(s): 

• ELOG

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.

Log Number: 4472348Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The following cavities have been GSET 0:
2L08-8
Username: deir
Date/Time: 02-21-26_05:54:51
RF Status: Bad
Tuner Status: Good
Comment: GSET 0 - stepped off +100k - Unstable GMES & PMES
Special Instructions:

Maintenance Tag: Component: Operator Entry - See SME

Log Number: 4472347Logbook(s): 

• SRFLOG
• CLOG
• ELOG
• RFLOG

Entry Makers: deirBody: 

Attempted to recover w/ OLT. Upon leaving expert mode, PMES/GMES highly unstable. Goin to GSET0 for now until SME can take a look.

Log Number: 4472346Logbook(s): 

• SRFLOG
• CLOG
• ELOG
• RFLOG

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.

Log Number: 4472345Logbook(s): 

• CLOG
• ELOG
• RFLOG
• SRFLOG

Entry Makers: deirBody: 

Soaking at ODVH. LEM Req Heat set to 80W. Will adjust when zone is lowered to Target GSets.

Log Number: 4472344Logbook(s): 

• CLOG
• ELOG
• RFLOG
• SRFLOG

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.

Log Number: 4472343Logbook(s): 

• SRFLOG
• CLOG
• ELOG
• RFLOG

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

Log Number: 4472342Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: Ran from opsl05

Finished after 39 iterations.

GREY: RF OFF
RATNI RED: <= 3.0 dB
GASKL RED: <1.8 V or > 2.4 V

Log Number: 4472341Logbook(s): 

• CLOG
• ELOG
• RFLOG
• SRFLOG

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.

Log Number: 4472340Logbook(s): 

• SRFLOG
• CLOG
• ELOG
• RFLOG

Entry Makers: msmithBody: 

CAV-1: Quenched at 8.5. Dropped down to 7 then walked back up to ODVH.
Cav-3: SOS at the ODVH so I OLT'd

Log Number: 4472339Logbook(s): 

• CLOG
• ELOG
• RFLOG
• SRFLOG

Entry Makers: deirBody: 

LEM REQ Heat set to 161 W per LEM.

Log Number: 4472338Logbook(s): 

• SRFLOG
• CLOG
• ELOG
• RFLOG

Entry Makers: msmithBody: 

Log Number: 4472337Logbook(s): 

• SRFLOG
• CLOG
• ELOG
• RFLOG

Entry Makers: msmithBody: 

Log Number: 4472336Logbook(s): 

• CLOG
• ELOG
• RFLOG
• SRFLOG

Entry Makers: deirBody: 

Will let it soak at ODVHs for a couple hours then reduce it to Target GSETs.

LEM Req Heat set to 50 W.

Log Number: 4472335Logbook(s): 

• ELOG

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.

Log Number: 4472334Logbook(s): 

• SRFLOG
• CLOG
• ELOG
• RFLOG

Entry Makers: msmithBody: