Alarm Handler

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PREX Main<< Information for Shift Takers << Shift Leader

Experimental Python Alarm Handler

The new python alarm handler lives (for now) in a SBU JLab GitHub Repository

Start a new instance

From within the apar account, execute the ~/bin/ command

AlarmHandler

Hall A/Target Alarm Handler

Figure 1 - Click on the red toolbox in the lower left of the hacweb7 screen (4th icon from the left).

Figure 2 - The alarm handler window when there is a red alarm.

Figure 3 - The window that opens when you click on the alarm handler button. There is a red alarm

Start a new instance of the Hall A Alarm handler

• From the EPICS control computer (hacweb7), click on the red toolbox in the lower left corner (see Figure 1)
• Click on "AlarmHandler" in the popup menu
• The window shown in Figure 2 should appear
• Move the alarm handler window to the upper right of the screen
• Pin the window to all of the desktops
  • Click on the "AlarmHandler" in the upper left corner
  • Mouse over "To Desktop"
  • Choose "All Desktops" at the top of the drop down menu
• Open the Current Alarm History
  • Click the "View" context menu and select "Current Alarm History Window"
  • This is most useful for getting detailed information about timing and values of alarms as they accumulate
  • Information about alarms is also accessible by double clicking on items in the right half-panel

Start a new instance of the Target Alarm Handler

• Make sure the target gui is running on the poltarac computer

cd ~/Desktop/PRex
./tgtgui
Select the ALARMS button

• It should be similar to the Hall A alarm handler, but with difference tracked EPICS variables

Responding to an alarm

• Click on the alarm handler window in the upper right of the hacweb7 monitor (see Figure 2)
• This will open a window that lists the various pieces of equipmen (see Figure 3)