Aggregator
Downtime Incident CLOSED: 2L14 dropped HV
HYST AREA 7-0 Cycles Magnets for LEM
FSD Masking Tool: Successful System UN-Masking for: BeamLossMonitor
User: eforman
Areas: All
BeamLossMonitor Devices:
ILM0I07
ILM0L01A
ILM0L01B
ILM0L02
ILM2D00A
ILM2D00B
ILM0L04A
ILM0L04B
ILM0L05
ILM0L06A
ILM0L08
ILM0R01
ILM4D00
ILM0R03
ILM0R04
ILM0R06
ILM0R08
ILM0R09
ILM1L01
ILM1L02
ILM6R08
ILM3S00
ILM7S00
ILM9S00
ILM5S10
ILM5E03
ILM7S01
ILM9A01
ILM3E02
ILM5A01
ILM1A04
ILM1A06
ILM1A09
ILM5A10
ILM1A16
ILM1A19
ILM3R10
ILM9R07
ILM1R09
ILM2L03
ILM5R10
ILM5R05
ILM2L01
ILM2T09
ILM
QuickPic - xC target change --> LH2
LEM South Linac
QuickPic - 2L14-7 CWWT Flatlines at Zero, Dropping Zone HV
FSD Masking Tool: Successful System Masking for: BeamLossMonitor
User: eforman
Areas: All
BeamLossMonitor Devices:
ILM0I07
ILM0L01A
ILM0L01B
ILM0L02
ILM2D00A
ILM2D00B
ILM0L04A
ILM0L04B
ILM0L05
ILM0L06A
ILM0L08
ILM0R01
ILM4D00
ILM0R03
ILM0R04
ILM0R06
ILM0R08
ILM0R09
ILM1L01
ILM1L02
ILM6R08
ILM3S00
ILM7S00
ILM9S00
ILM5S10
ILM5E03
ILM7S01
ILM9A01
ILM3E02
ILM5A01
ILM1A04
ILM1A06
ILM1A09
ILM5A10
ILM1A16
ILM1A19
ILM3R10
ILM9R07
ILM1R09
ILM2L03
ILM5R10
ILM5R05
ILM2L01
ILM2T09
ILM8T0
The following cavities have been bypassed: 2L14-7
The following cavities have been bypassed:
2L14-7
Username: bschauml
Date/Time: 08-02-26_22:57:21
RF Status: Bad
Tuner Status: Good
Comment: Bypassed - stepped off +100k - Cavity-Window-Temp
Special Instructions:
Maintenance Tag: Component: Operator Entry - See SME
iCalibrate: Hall C
Downtime Incident CREATED: 2L14 dropped HV
AutoLog - Masking Hall C Normal Target
Steering to Reduce ILM3R10 Trips
As the 3R10 BLM that was causing us grief is above the late 5R beamline (always take a look at the pictures on the ops wiki!) we began nudging the vertical orbit in this region downwards, away from the BLM. Though the BLM readback didn't budge, this seemed to benefit us in the earlier portion of our shift and we left it alone until about 2100 when we began getting 3R10 trips once again. At that point we decided that more substantial adjustment was necessary so we carried on with the same tack as before and eventually got the readback to drop a good amount.
MBC8A16V Mismatch
2L04-7 OLT
At the start of shift, while looking for reasons that ILM3R10 might be tripping us up I noted GLDER alarms for 2L04-7 on the General Tools Screen and found that this cavity was quite noisy indeed. A smidge of steering at the start of shift seemed to take us off the edge for 3R10, but it showed back up arond 2100, so I decided to take a look at this cavity. Shortly after derating it 0.5 MV/m it tripped off and the Crew Chief gave his blessing to do a lil tune-up. Turns out the DETA was zeroed about 40 degrees off. It looks much happier now!










