Aggregator

Log Number: 4474660Logbook(s): 

• ELOG

Entry Makers: eformanBody: 

NL ODH mobile 1 (OMNL13) is in alarm despite being bypassed & disabled. The alarm handler software looks at the value of OMNL13BP to determine whether the ODH head is bypassed or not (and hence whether to propagate the alarm - 0=not bypassed, 1=bypassed). When I caget OMNL13BP I get a null response (neither 1 nor 0). When I attempt to caput OMNL13BP 1, the change again returns a null response.

The upshot of this is that the alarm node associated with this ODH detector is flooding the alarm handler with false alarms, making us blind to any real alarms that come in.

Log Number: 4474659Logbook(s): 

• ELOG

Entry Makers: bschaumlBody: 

In the interest of preserving the baked beamline downstream of the gun CIS has advised that we leave VBV2I01A closed for the night until they have a chance to consider their next steps.

Log Number: 4474658Logbook(s): 

• ELOG

Entry Makers: bschaumlBody: 

Again, vacuum signals were well below trip limits.

Log Number: 4474650Logbook(s): 

• ELOG

Tags: 

• Autolog
• MCC8am

Body:  */ ATLis Comments Posted 18:00 Wednesday March 04 through 18:00 Thursday March 05 AES DC power Systems Disconnect Magnets at South Linac 2L25 and 2L26 for Girder Removal.

2026-03-05 07:03 - Mark Kissinger

Log Number: 4474645Logbook(s): 

• ELOG

Entry Makers: bschaumlBody: 

I noted that VIP2I00 began rising again which was due to the gun valve (VBV2I01A) closing. I'm confused as to why this happened as the trip limits were not exceeded, at least as far as the PVs show. Very suspicious...

Log Number: 4474643Logbook(s): 

• ELOG

Body: The following entry was placed in the Accelerator Bypassed-Interlocks Log (ABIL) Device: OM26 Function: Oxygen Monitor Location: SL Mobile Purpose: Unit not in use. Bypassing to set alarm disable bit. Exp.

Log Number: 4474642Logbook(s): 

• ELOG

Body: The following entry was placed in the Accelerator Bypassed-Interlocks Log (ABIL) Device: OM25 Function: Oxygen Monitor Location: SL Mobile Purpose: Unit not in use. Bypassing to set alarm disable bit. Exp.

Log Number: 4474639Logbook(s): 

• ELOG

Body: The following entry was placed in the Accelerator Bypassed-Interlocks Log (ABIL) Device: OM14 Function: Oxygen Monitor Location: NL Mobile Purpose: Unit not in use. Bypassing to set alarm disable bit. Exp.

Log Number: 4474638Logbook(s): 

• ELOG

Body: The following entry was placed in the Accelerator Bypassed-Interlocks Log (ABIL) Device: OM13 Function: Oxygen Monitor Location: NL Mobile Purpose: Unit not in use & throwing false alarms. Bypassing to set alarm disable bit. Exp.

Log Number: 4474637Logbook(s): 

• ELOG

Body: ACC=>VACUUM has been disabled in alarm handler

T/S

Log Number: 4474636Logbook(s): 

• ELOG

Body: The following entry was placed in the Accelerator Bypassed-Interlocks Log (ABIL) Device: OM13 Function: Oxygen Monitor Location: NL Mobile Purpose: Unit not in use & throwing false alarms. Bypassing to set alarm disable bit. Exp.

Log Number: 4474635Logbook(s): 

• SRFLOG
• ELOG
• RFLOG

Entry Makers: dthomasBody: 

Log Number: 4474633Logbook(s): 

• ELOG

Body: ACC has been enabled in alarm handler

HCO

Log Number: 4474634Logbook(s): 

• ELOG

Tags: 

• Readme

Entry Makers: eformanBody: 

Spoke with CIS on-call regarding gun HV trip and degraded vacuum.
On their instruction, we opened the gun valve to assist pumping the vacuum back down (vacuum is recovering slowly...it was sitting at 1e-5 torr for ~15 minutes).
Plan moving forward is to wait until vacuum recovers (~1e-10 torr), then ramp the gun up at 50 kV/min, watching for signs of field emission (decarads, vacuum, gun current, anode current).
If the ramp-up goes without a problem, we will let the gun soak at 200 kV overnight without beam.

Log Number: 4474632Logbook(s): 

• ELOG

Body: ACC has been disabled in alarm handler

troubleshooting

Log Number: 4474631Logbook(s): 

• ELOG

Body: ACC has been enabled in alarm handler

HCO

Log Number: 4474630Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl05

Saved: eforman 03-05-26 17:10:50 {A:5 B:3 C:1 E:345 A=BS B=BS C=BS D=BS 0R08=0.00 0R08 dump in.

Log Number: 4474628Logbook(s): 

• ELOG
• SLOG

Tags: 

• MCC8am
• Software and Controls

Body: 

Update UITF FCC Firmware - Support Q0 Measurements
New RTP Cell Driver EPICS, Screen, Controls Update
OPS Alarm Handler HCO Troubleshooting and Assistance

Log Number: 4474622Logbook(s): 

• ELOG
• RADLOG

Entry Makers: dthomasBody: 

All 3 probes passed: Ludlum 78, Bicron, and 6112B.

Log Number: 4474621Logbook(s): 

• ELOG
• SRFLOG

Body: 

Completed One hour run at 22.4 MV/m (Cavity 6) No FE