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Commissioning
Beam checkout
Detailed beam checkout instructions can be found here.
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HMS
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SHMS
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TARGET
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RADIATOR
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I (uA)
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RASTER
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DURATION
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Q (C)
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TRIGGER
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DAQ
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STATUS
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P
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P
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| Harp Scan
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Empty
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out
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5
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OFF
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0:15
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done
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| YAG: Beam spot
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Empty
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out
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tune
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OFF
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0:05
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done
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| YAG: Raster check
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Empty
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out
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tune
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2x2
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0:10
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done
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| Carbon hole
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4.712
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17.08
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(-)
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5.389
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15.81
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(-)
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C-hole
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out
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5
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3x3
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0:30
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3/4
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sep.
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done
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Detector checkout and calibrations
Additional instructions:
- We run both the COIN and separate DAQs during this phase!
- Inelastic measurement:
- Take 5min of MODE 10 data before starting the the inelastic measurement, then switch back to MODE 9.
- Coinc elastic:
- Take 5min of MODE 10 data before starting the the inelastic measurement, then switch back to MODE 9.
- Take pre-scaled 3/4 singles in both arms, set pre-scalers so the singles rate is <100Hz
- This run needs a special temporary trigger that will be connected to PS5
- Make sure sure PS5 = 0
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HMS
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SHMS
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TARGET
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RADIATOR
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I (uA)
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RASTER
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DURATION
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Q (C)
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TRIGGER
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DAQ
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STATUS
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P
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THETA
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P
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THETA
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| Trigger checkout
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4.712
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17.08
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(-)
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5.389
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15.81
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(-)
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LH2
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out
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70
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2x2
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0:15
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3/4
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COIN
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done
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| PID checkout
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4.712
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17.08
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(-)
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5.389
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15.81
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(-)
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LH2
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out
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70
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2x2
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0:15
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3/4
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COIN
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done
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| PID checkout
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3.5
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21
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(-)
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3.5
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21
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(-)
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LH2
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out
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70
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2x2
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0:15
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3/4
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COIN
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skip
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| ECAL calibration
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4.75
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21
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(-)
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4.75
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21
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(-)
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LH2
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out
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70
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2x2
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0:15
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3/4
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COIN
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done
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| inelastic/ECAL calib
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4.1
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21
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(-)
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3.5
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25
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(-)
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LH2
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out
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70
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2x2
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ELREAL
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sep.
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done
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| inelastic
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4.1
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21
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(-)
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3.5
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25
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(-)
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Dummy
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out
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40
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2x2
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ELREAL
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sep.
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done
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| optics (SIEVE)
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4.1
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21
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(-)
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3.5
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25
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(-)
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Optics-1
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out
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65
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2x2
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ELREAL
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sep.
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done
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Coincidence elastics
- * Trigger:
- run with ?
- Remember to click "save" when changing the pre-scalers!
- VCS experiment Instructions for Shift Takers
- Do a 50k replay for every run. Carefully check the monitoring plots and discuss anything that looks strange with the analysis shift crew.
- Fill out the Shift check list once every shift
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HMS
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SHMS
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TARGET
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RADIATOR
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I (uA)
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RASTER
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DURATION
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Q (C)
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TRIGGER
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DAQ
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STATUS
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P
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THETA
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P
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THETA
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| coinc elastic
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4.95
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25.6
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(+)
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6.5
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19.2
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(-)
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LH2
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out
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70
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2x2
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0:40
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0.17
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3/4 coin
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COIN
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done
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| coinc elastic
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4.95
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25.6
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(+)
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6.5
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19.2
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(-)
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Dummy
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out
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40
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2x2
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0:15
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0.04
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3/4 coin
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COIN
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done
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| TIME (days)
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0.04
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| Charge(mC)
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204
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Production
Phase 1:
Instructions:
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HMS
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SHMS
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TARGET
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RADIATOR
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I (uA)
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RASTER
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DURATION
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Q (C)
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TRIGGER
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DAQ
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STATUS
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P
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THETA
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P
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THETA
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| #1 (MODE 10)
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4.95
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19.1
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(+)
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4.835
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17
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(-)
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LH2
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out
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70
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2x2
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0:05
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production
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COIN
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done
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| #1 (no radiator)
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4.95
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19.1
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(+)
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4.835
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17
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(-)
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LH2
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out
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70
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2x2
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1:00
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0.25
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production
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COIN
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50%
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| #1 (MODE 10)
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4.95
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19.1
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(+)
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4.835
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17
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(-)
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LH2
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in
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70
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2x2
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0:05
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production
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COIN
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done
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| #1-0
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4.95
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19.1
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(+)
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4.835
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17
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(-)
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LH2
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in
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70
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2x2
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5:30
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1.39
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production
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COIN
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done
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| #1-0 (Dummy)
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4.95
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19.1
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(+)
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4.835
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17
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(-)
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Dummy
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in
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40
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2x2
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2:00
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0.29
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production
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COIN
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done
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| #1-1
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4.95
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19.1
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(+)
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4.835
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17
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(-)
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LH2
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in
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70
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2x2
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12:00
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3.02
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production
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COIN
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done
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| #1-1 (Dummy)
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4.95
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19.1
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(+)
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4.835
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17
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(-)
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Dummy
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in
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40
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2x2
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3:20
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0.48
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production
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COIN
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93.50%
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| TIME (days)
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1.00
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| Charge(mC)
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5,430
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Phase 2:
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HMS
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SHMS
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TARGET
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RADIATOR
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I (uA)
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RASTER
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DURATION
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Q (C)
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TRIGGER
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DAQ
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STATUS
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P
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THETA
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P
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THETA
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| #2 (MODE 10)
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4.6
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19.9
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(+)
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4.3
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20.1
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(-)
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LH2
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in
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70
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2x2
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0:05
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production
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COIN
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done
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| #2
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4.6
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19.9
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(+)
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4.3
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20.1
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(-)
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LH2
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in
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70
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2x2
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36:00
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9.07
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production
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COIN
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90%
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| #2 (Dummy)
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4.6
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19.9
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(+)
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4.3
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20.1
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(-)
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Dummy
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in
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40
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2x2
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12:00
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1.73
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production
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COIN
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23.40%
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| TIME (days)
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2.00
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| Charge(mC)
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10,800
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Phase 3:
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HMS
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SHMS
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TARGET
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RADIATOR
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I (uA)
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RASTER
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DURATION
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Q (C)
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TRIGGER
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DAQ
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STATUS
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P
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THETA
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P
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THETA
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| #3 (MODE 10)
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4.08
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16.4
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(+)
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3.5
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30
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(-)
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LH2
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in
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70
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2x2
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0:05
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production
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COIN
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done
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| #3
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4.08
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16.4
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(+)
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3.5
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30
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(-)
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LH2
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in
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70
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2x2
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144:00
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36.29
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production
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COIN
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37.90%
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| TIME (days)
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6.00
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| Charge(mC)
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36,288
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Phase 4:
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HMS
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SHMS
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TARGET
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RADIATOR
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I (uA)
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RASTER
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DURATION
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Q (C)
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TRIGGER
|
DAQ
|
STATUS
|
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P
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THETA
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P
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THETA
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| #4 (MODE 10)
|
4.4
|
16.5
|
(+)
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4.4
|
24.5
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(-)
|
LH2
|
in
|
70
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2x2
|
0:05
|
|
production
|
COIN
|
|
| #4
|
4.4
|
16.5
|
(+)
|
4.4
|
24.5
|
(-)
|
LH2
|
in
|
70
|
2x2
|
48:00
|
12.10
|
production
|
COIN
|
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| TIME (days)
|
2.00
|
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| Charge(mC)
|
12,096
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