MUON TRIGGER DCS introduction & tutorial - ALICE Muon Trigger ...

Non-FSM tools: Emergency button
Several PVSS buttons and panels can be used to monitor and control
the system when the FSM is not running. Please read the Shifter’s guide
for their description. Here, we will focus on the Emergency button and
Alarm screen
The emergency button:
• Tells the shifter whether the system is safe for
injection or not not. The safe condition is: all HVs < 6100 V
• Allows the shifter (or even the central DCS operator) to
force the system to a safe state when, for any reason, the
GO_BEAM_TUNING FSM command does not work:
- Right-click on the HVoff button
to unlock it
- Left-click on the HVoff button to
ramp down all HV channels
- Make sure the box turns “SAFE”
after a while
Frédéric Jouve & Martino Gagliardi Dimuon Meeting, Aussois – 09/06/2009 slide 18