[Hallb] [EXTERNAL] Major Injector Gun Issue & Extended Downtime

Lamiaa El Fassi elfassi at jlab.org
Thu Nov 30 18:34:02 EST 2023

Dear Colleagues,

I have been contacted by the PD to notify me that due to the injector Gun
alarms, see this ELOG incident
<https://ace.jlab.org/dtm/open-events?event_id=18458>, a decision was made
to turn the beam off for at least the next 24 hours to look into this
issue; more details after tomorrow's MCC meetings. I did confirm this
decision with the Crew Chief and communicated with the PDL Baltzell in this
regard. As a result, today's Swing shift and tomorrow's Owl and Day shifts
are canceled; however, tomorrow's Swing shifters are on standby. I will
communicate this info directly to the corresponding shift takers. Given the
counting house will be unattended, the beamline expert Paysuk was contacted
to ramp down the Torus and Solenoid fields.

@ Detectors Experts: please let me know whether you prefer the HV of your
subsystems to be turned OFF, so I can do that while I am still in the CH
for the next hour or so!
In case anyone would like access to the hall during tomorrow's day shift,
please let me know whether you need controlled or restricted access to the
hall to change the hall status accordingly. Please either email me or call
the RC phone to coordinate that.

I will keep you updated with any news that we may get after tomorrow's MCC



* Assoc. Prof. Lamiaa El Fassi  /  email: le334 at msstate.edu
* Phone: (662) 325-0627    /    Fax:  (662) 325-8898
* URL: https://urldefense.proofpoint.com/v2/url?u=http-3A__le334.physics.msstate.edu_&d=DwIBaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=E9temI25vZoSfrwaoVr2jw&m=SYbtsD0WYrTS-j1fe8RdsE_aSXs3QdBJtuIym7WqsTCvGG8v4wEJzzW5YTA0IKtf&s=MJQJJKT4FyDsa5YNYBBFSpF5Pa7sEKMHbWKd4-9weCM&e= 
<https://urldefense.proofpoint.com/v2/url?u=http-3A__le334.physics.msstate.edu_&d=DwIBaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=E9temI25vZoSfrwaoVr2jw&m=SYbtsD0WYrTS-j1fe8RdsE_aSXs3QdBJtuIym7WqsTCvGG8v4wEJzzW5YTA0IKtf&s=MJQJJKT4FyDsa5YNYBBFSpF5Pa7sEKMHbWKd4-9weCM&e= >
* Department of Physics and Astronomy
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