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The Beam Pulse Accounting system uses EPICS calc. PVs to control tracking for accounting of beam destination and stopper in/out times.

At the end of each eigh hour shift the integrated time for "This Shift" is saved to "Last Day/Swing/Owl" accordingly.

"Configuration Change" times are also implemented.  Operations should be able to keep track of how long configuration changes take per shift.

Beam Destinations Timers

A BPM TMIT is used to keep track of electron beam to the following locations:

  • BPM 2 (BPMS:IN20:221:TMIT1H)
  • TD11  (BPMS:LI21:301:TMIT1H)
  • D2  (BPMS:BSY0:88:TMIT1H)
  • BYKICK (BPMS:LTU1:350:TMIT1H)   *Beware of burst mode!
  • TDUND (BPMS:LTU1:960:TMIT1H)
  • e- Dump (BPMS:DMP1:693:TMIT1H)

Stopper in/out Timers

A Stopper In/Out PV is used for the following stoppers:

  • AMO (PPS:NEH1:1:S1STPRSUM)
  • SXR  (PPS:NEH1:2:S2STPRSUM)
  • HXRAY (PPS:NEH1:3:SH1STPRSUM)

Beam Rate Counter

Is the beam rate > 10 Hz? (EVNT:SYS0:1:LCLSBEAMRATE)

Configuration Change Timers

Configuration change GUIs and/or users can stop and start this timers.

  • Energy Change Start - caput SIOC:SYS0:ML00:CALC124  0
  • Energy Change Stop - caput SIOC:SYS0:ML00:CALC126 1
  • Charge Change Start - caput SIOC:SYS0:ML00:AO988 1
  • Charge Change Stop - caput SIOC:SYS0:ML00:AO988 0

The energy change logic also stars the energy chage timer when a change on BEND:LTU0:125:BDES is detected.

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