Aggregator

Log Number: 4538790Logbook(s): 

• ELOG

Entry Makers: janakBody: 

Log Number: 4538789Logbook(s): 

• ELOG

Body: 

I would recommend 6 hours so we can get down into the tunnel, look at what we got, and figure out the best way to reposition the cable.

Log Number: 4538786Logbook(s): 

• ELOG

Entry Makers: lrichardBody: 

Mismatch of Hall C laser attenuator setpoint and readback (Fig. 1). Re-homed Hall C Laser attenuator. Readbacks now match (Fig. 2).

Log Number: 4538779Logbook(s): 

• ELOG

Entry Makers: lrichardBody: 

The IDX Detector 4 (IIXAS01A) was showing det saturation warning while the Integration Period was set to 0.20. We first tried setting the Integration Period to 0.10 but the det saturation indicator was yellow. Setting the Integration Period to 0.05 removed the det out of saturation (Fig. 1) with indicator showing green. Noticed IIXAS01A increased from 7229 to 17860 once the 0.05 Integration Period was entered. (Fig. 2)

Log Number: 4538767Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: UNMasked Hall C Normal Target FSD

Log Number: 4538766Logbook(s): 

• ELOG

Body: Calibration ParametersHall:CTarget: Loop 2 10cmPass: 5Note: Calibrated On:2026-Jul-27 23:36Calibrated By: shrinerFile:C-2026-07-27_2336_Loop_2_10cm_Pass-5.hcdIon ChamberExisting Setpoing (rads/hr)New Setpoint (rads/hr)Compton4,234<

Log Number: 4538765Logbook(s): 

• ELOG

Body: 

How long do you think you will need down in the tunnel?

Log Number: 4538764Logbook(s): 

• ELOG

Body: 

would like to do this at Jay's request on the next maintenance day.

Log Number: 4538759Logbook(s): 

• ELOG

Entry Makers: lrichardBody: 

Log Number: 4538757Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: Masked Hall C Normal Target FSD

Log Number: 4538750Logbook(s): 

• ELOG

Body: 

The AS01A IDX is still saturating. When everything is stable, it shows the reading of ~8000 at 70 uA and the fact of saturation is not evident. The telltale is the presence of large negative responses during the moments of beam current changes. Scanning of the beam current may reveal that also, as it happened earlier today, see the plot. The reading went up to ~10000 until the current reached ~20 uA, then stayed negative at -10000 with a steady current. Increasing the current to ~70 uA brought the value to ~8000.

Log Number: 4538742Logbook(s): 

• ELOG

Body: 

For immediate execution.

Log Number: 4538741Logbook(s): 

• ELOG

Body: 

Let's aim to do this Tuesday 8/11 between 6 and 10am. Does that work?

Log Number: 4538724Logbook(s): 

• ELOG

Entry Makers: janakBody: 

Log Number: 4538716Logbook(s): 

• CLOG
• ELOG
• RFLOG
• SRFLOG

Body: 

The electric heat did not come on when the module dropped because the RF heat readback was erroneously 652. That error should be investigated to ensure stable operation when switching RF on/off.

Log Number: 4538715Logbook(s): 

• CLOG
• ELOG
• RFLOG

Entry Makers: nortonBody: 

Inlet and outlet diode of 2L04 module both appear nonfunctional. They may need to be switched to spares or modified to report voltage and have the diode curve handled differently. This won't impact operations.

Log Number: 4538711Logbook(s): 

• ELOG

Entry Makers: janakBody: 

Log Number: 4538707Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: UNMasked Hall C Normal Target FSD

Log Number: 4538705Logbook(s): 

• ELOG

Tags: 

• MCC8am

Body:  CEBAF SHIFT LOG Shift Summary

Start of shift: Beam halted to the halls to address ILM3R10 trips

Log Number: 4538703Logbook(s): 

• ELOG

Body: Calibration ParametersHall:CTarget: 10cm DummyPass: 5Note: SHMS angle: -14-74Calibrated On:2026-Jul-28 02:36Calibrated By: msmithFile:C-2026-07-28_0236_10cm_Dummy_Pass-5.hcdIon ChamberExisting Setpoing (rads/hr)New Setpoint (rads/hr)Compton