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iCalibrate: Hall D

21 hours 39 minutes ago
Log Number: 4496674Logbook(s): 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)
shriner

Alarm Handler opens old screen

21 hours 52 minutes ago
Log Number: 4496672Logbook(s): Entry Makers: shrinerBody: 

The EDM screens brought up by the Alarm Handler for the four magnets in rack NL01B11A are outdated and need to be replaced with the current ones. The screen that is brought up through the Alarm Handler is shown in Figure 2. However, the screen brought up through the rack screen is shown in Figure 3.

shriner

Injector alarm handler

22 hours 3 minutes ago
Log Number: 4496669Logbook(s): Body: 

Responded to an unacknowledgeable VIP alarm in the 2I region. The alarm’s .ACKS field was in an INVALID state and could not be acknowledged by Operations.

Restarting the alarm handler cleared this issue. However, upon restart, it was determined that _TEMPERATURE alarms were being incorrectly applied to dipoles driven by 20A trim cards. The configuration rules were corrected and the generation scripts were rerun, removing the invalid TEMPERATURE alarm from the system.

erb

iCalibrate: Hall D

22 hours 42 minutes ago
Log Number: 4496664Logbook(s): Body: Calibration ParametersHall:DTarget: 1.1x10-3 Al 100umPass: 5.5Note: Calibrated On:2026-May-02 07:48Calibrated By: msmithFile:D-2026-05-02_0748_1.1x10-3_Al_100um_Pass-5.5.hcdIon ChamberExisting Setpoing (rads/hr)New Setpoint (rads/hr)East Wa
alexs

Unable to acknowledge VIP2I02A alarm

23 hours 4 minutes ago
Log Number: 4496660Logbook(s): Entry Makers: alexsBody: 

Alarm appears to be a false positive, given the steady readbacks. The alarm would not acknowlege for anyone in the control room, though, so contacted software on call for assistance in silencing the beeps.

alexs

Sudden jumps in 0I05 Horizontal position correlated with Hall B current losses

1 day 1 hour ago
Log Number: 4496638Logbook(s): Entry Makers: alexsBody: 

Three times in the past half hour, we've noticed a sudden drop in Hall B's current that recovers over the course of less than five minutes. These drops coincide with a sudden jump of a few hundred microns in the horizontal position at IPM0I05. The cause, like many others at the moment, is unclear. The chopper appears to be behaving normally. If you squint, there appears to be some vacuum activity that might suggest something in the chopper is charging and discharging, but it's hard to tell.

alexs

Hall B upstream halo excursions uncorrelated to beam in the machine

1 day 2 hours ago
Log Number: 4496627Logbook(s): Entry Makers: eformanBody: 

Twice in the past hour, we have had bursts of noise on the upstream halo counters that seem to be uncorrelated to beam in the machine. In figs. 1 & 2 the upstream halo counter is in brown, injector BCM is in pink. Note that the noise in the upstream halo counter appears while sending beam and trips the beam off. Despite beam off, the noise continues for several minutes until it suddenly stops without intervention.
Hall B was contacted and their system expert is investigating.

eforman

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CEBAF Program
MCC Crew Chief Forman
MCC Operators Schaumloffel, Yoon
Program Deputy Drury
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