Aggregator

Log Number: 4504232Logbook(s): 

• ELOG

Entry Makers: chumphryBody: 

Log Number: 4504222Logbook(s): 

• HDLOG
• ELOG

Entry Makers: bjacobBody: 

Log Number: 4504221Logbook(s): 

• ELOG

Body: Calibration ParametersHall:DTarget: JD70-107 55um 45/135 degPass: 5.5Note: Calibrated On:2026-May-03 18:47Calibrated By: alexsFile:D-2026-05-03_1847_JD70-107_55um_45_135_deg_Pass-5.5.hcdIon ChamberExisting Setpoing (rads/hr)New Setpoint (rads/hr)

Log Number: 4504217Logbook(s): 

• ELOG

Entry Makers: bjacobBody: 

This cavity started tripping a lot. Trying a POff Opt to see if that helps.

Log Number: 4504216Logbook(s): 

• ELOG

Entry Makers: janakBody: 

Log Number: 4504212Logbook(s): 

• ELOG

Entry Makers: janakBody: 

Log Number: 4504211Logbook(s): 

• ELOG

Body: Calibration ParametersHall:CTarget: Loop 2 10cmPass: 3Note: Calibrated On:2026-May-18 22:28Calibrated By: shrinerFile:C-2026-05-18_2228_Loop_2_10cm_Pass-3.hcdIon ChamberExisting Setpoing (rads/hr)New Setpoint (rads/hr)Compton1,872<

Log Number: 4504209Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: UNMasked Hall C Normal Target FSD

Log Number: 4504207Logbook(s): 

• ELOG

Entry Makers: janakBody: 

At 10: xC went back to beam permit and requested 25uA on the Carbon 3% target again.
10:49 -> Resumed at 25uA
10:56 -> 30uA
11:00 -> 35uA
11:05 -> 40uA
11:10 -> 45uA
11:15 -> 50 uA Maximum current

Log Number: 4504205Logbook(s): 

• ELOG

Body: 

Negative photon dose rate values in the NDX detectors happen typically when there's a real radiation event, but HV is not supplied. Case of NL24 and NL25: for some reason, their HV readback is zero, and in the brief moments of a beam loss in the area the neighboring NDXs do see a normal response, but NL24 and NL25 are negative. The HV value for their I400 electrometer needs to be recovered. The intermittent case of 1L06 is not clear. HV is ON there. The events do not seem to be real radiation as there's no correlated neighbors' response. Cable contacts?

Log Number: 4504204Logbook(s): 

• ELOG

Entry Makers: janakBody: 

Downstream from 1,000,000 to 100,000
Upstream from 1,000,000 to 2,000

Log Number: 4504203Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: Masked Hall C Normal Target FSD

Log Number: 4504200Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: Masked Hall C Normal Target FSD

Log Number: 4504190Logbook(s): 

• ELOG

Entry Makers: chumphryBody: 

Log Number: 4504184Logbook(s): 

• ELOG

Entry Makers: chumphryBody: 

Log Number: 4504175Logbook(s): 

• ELOG

Entry Makers: chumphryBody: 

Log Number: 4504173Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 17007Title:
Hall C: SHMS Troubleshooting

Summary:
Troubleshooting SHMS problemDuration:
1 hour 23 minutes

Time Down:
25-May-2026 09:28

Time Up:
25-May-2026 10

Log Number: 4504169Logbook(s): 

• HCLOG
• ELOG
• RADLOG

Entry Makers: chumphryBody: 

Log Number: 4504166Logbook(s): 

• ELOG

Body: Calibration ParametersHall:CTarget: Carbon 3%Pass: 3Note: Calibrated On:2026-May-25 08:00Calibrated By: dchriFile:C-2026-05-25_0800_Carbon_3__Pass-3.hcdIon ChamberExisting Setpoing (rads/hr)New Setpoint (rads/hr)Compton2,080

Log Number: 4504157Logbook(s): 

• ELOG

Entry Makers: janakBody: 

Including all current changes for xC incremental current ramp up.
08:14 -> 2uA
08:45 -> 3uA
08:50 -> 4uA
08:53 -> 5uA
08:58 -> 6uA
09:00 -> 7uA
09:05 -> 10uA
09:09 -> 15uA
09:17 -> 20uA
09:22 -> 25uA

At about 9:25 the hall made an access for SHMS troubleshooting.