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FSD Masking Tool: Successful System UN-Masking for: BeamLossMonitor
gun drop troubleshooting
Log Number: 4471377Logbook(s): Entry Makers: marcyBody:
Got called as CIS On call for a gun drop. Gun dropped at 19:09, some magnet mismatches and vacuum activity at the same time.
Beam was off and Wien filters were off at the time of the gun trip.
Vacuum activity seems likely to have been caused by gun voltage changing. Valves did not close.
Decarads were on and no change in signals that would indicate field emission
No gun interlocks or vacuum interlocks latched to show that we lost HV permission
No noticable changes in power to the service building - see Ben's elog.










