Aggregator

Log Number: 4512220Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The following cavities have been GSET 0:
1L19-7
Username: samari
Date/Time: 06-16-26_06:27:48
RF Status: Bad
Tuner Status: Good
Comment: GSET 0 - stepped off +100k - klystron arc
Special Instructions:

Maintenance Tag: Component: Operator Entry - See SME

Log Number: 4512219Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 17188Title:
1L19 DC Overload

Summary:
Zone dropped HV on DC Overload.

Log Number: 4512218Logbook(s): 

• ELOG

Entry Makers: deirBody: 

Limit is 1070 at the moment and this zone is providing 25 MeV.

Log Number: 4512215Logbook(s): 

• ELOG
• RFLOG

Entry Makers: deirBody: 

Log Number: 4512211Logbook(s): 

• ELOG

Body: Calibration ParametersHall:CTarget: Loop 2 10cmPass: 3Note: Calibrated On:2026-Jun-15 04:06Calibrated By: samariFile:C-2026-06-15_0406_Loop_2_10cm_Pass-3.hcdIon ChamberExisting Setpoing (rads/hr)New Setpoint (rads/hr)Compton1,796</

Log Number: 4512210Logbook(s): 

• ELOG

Entry Makers: samariBody: 

Log Number: 4512209Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: Masked Hall C Normal Target FSD

Log Number: 4512208Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: Masked Hall C Normal Target FSD

Log Number: 4512207Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: Masked Hall C Normal Target FSD

Log Number: 4512202Logbook(s): 

• ELOG
• RFLOG

Entry Makers: deirBody: 

Tried tuning cavity 8 as it was the only cavity with a high GASKR (0.4 V). I adjusted the TDOFF so that GASKR was at a minimum, but this just made PMES highly unstable.

In general, PMES in this cavity is quite unstable.

The rest of the zone also has an unusually high PASKR.

Log Number: 4512201Logbook(s): 

• ELOG

Body: 

During ZA inspection also look at BC8S00 for any signs of issues.

Log Number: 4512199Logbook(s): 

• DCLOG
• ELOG

Entry Makers: shrinerBody: 

took setpoint and cycled

Log Number: 4512193Logbook(s): 

• ELOG

Entry Makers: deirBody: 

Something happened around 21:00 on swing shift. The detune angle took a dive (~0 to -27) and the cavity started tuning. The tuner moved 100,000 steps with no, or very small, change in tdeta.

The crew de-rated it by 0.5 MV/m. That moved the TDETA closer to zero, but still not close enough to where the cavity would stop trying to tune. It continued tuning another 700k steps with no change in TDETA. Placed the tuner in manual for now.

Log Number: 4512184Logbook(s): 

• HCLOG
• ELOG

Entry Makers: samariBody: 

Log Number: 4512179Logbook(s): 

• HCLOG
• ELOG

Entry Makers: samariBody: 

Log Number: 4512178Logbook(s): 

• ELOG
• RFLOG

Entry Makers: samariBody: 

Log Number: 4512176Logbook(s): 

• ELOG

Body: Calibration ParametersHall:CTarget: 10cm DummyPass: 3Note: Calibrated On:2026-Jun-15 07:14Calibrated By: samariFile:C-2026-06-15_0714_10cm_Dummy_Pass-3.hcdIon ChamberExisting Setpoing (rads/hr)New Setpoint (rads/hr)Compton1,796</td

Log Number: 4512175Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: Masked Hall C Normal Target FSD

Log Number: 4512170Logbook(s): 

• DCLOG
• ELOG

Entry Makers: shrinerBody: 

Communications error alarm for MQVAA03. No heartbeat and no response to changes in current setpoint.

Log Number: 4512167Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 17187Title:
pass 3 RF separator trip

Summary:
IOT dropped HV, recovered without incident,but DSET ramp takes ~15 minutesDuration:
16 minutes

Time Down:
16-Jun-2026 03:39