The EDM screens brought up by the Alarm Handler for the four magnets in rack NL01B11A are outdated and need to be replaced with the current ones.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.
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.
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.
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.
| Shift | Swing |
|---|---|
| CEBAF Program | |
| MCC Crew Chief | Forman |
| MCC Operators | Schaumloffel, Yoon |
| Program Deputy | Drury |
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