Difference between revisions of "Check-list For taking Counting runs and Going back to Production"

From PREX Wiki
Jump to: navigation, search
(Created page with "* Before taking Counting Runs: ** Ask for low current (0.3uA for Ca-48 target for detector alignment check and <2uA for C-Hole raster check) ** Turn '''ON S0 and S3''' ('''L0....")
 
 
(4 intermediate revisions by the same user not shown)
Line 1: Line 1:
 
* Before taking Counting Runs:
 
* Before taking Counting Runs:
** Ask for low current (0.3uA for Ca-48 target for detector alignment check and <2uA for C-Hole raster check)
+
** Turn '''ON S0 and S3''' ('''L0.0, L0.1, L0.2, L0.3, L0.4''' in both arm's HV GUI)
** Turn '''ON S0 and S3''' ('''L0.0, L0.1, L0.2, L0.3, L0.4''' in both arm's HV GUI). Follow [[HVgui]] in wiki howto if you need to
+
** For '''Raster Check in C-Hole'''
** For Raster check on '''C-Hole''', you can start runs once the '''position and HV read-back are settled'''
+
*** Ask low current <2uA such that '''T1 rate <100kHz'''
** For Detector alignment Check,
+
*** Ask for appropriate raster size and position lock as in '''WHITE BOARD'''
*** make sure the '''T1 rate is ~200k'''
+
*** Follow [[HVgui | Checking the HV]] HOW TOs for shift crew if you need to
 +
*** You can start runs once the '''position and HV read-back are settled'''
 +
** For '''Detector alignment Check'''
 +
*** Ask for low current (0.3uA on Ca-48 target)
 +
*** Ask for appropriate raster size and position lock as in '''WHITE BOARD'''
 +
*** make sure the '''T1 rate is ~200kHz'''
 
*** turn '''ON VDC''' ('''L6.0, L6.3''' in LHRS and '''L4.5, L4.7''' in RHRS) if the T1 rate is good
 
*** turn '''ON VDC''' ('''L6.0, L6.3''' in LHRS and '''L4.5, L4.7''' in RHRS) if the T1 rate is good
 
*** set Downstream MAIN detectors HV to '''-1900V''' ('''L1.1 in both arms'''), and turn them ON
 
*** set Downstream MAIN detectors HV to '''-1900V''' ('''L1.1 in both arms'''), and turn them ON
 
*** once the position and HV read-back are settled, take runs
 
*** once the position and HV read-back are settled, take runs
 +
*** follow [[Taking MAIN detector Counting Run | Taking MAIN detector Counting Run]] if you need to analyse data
 
* Once you are done with counting Runs:
 
* Once you are done with counting Runs:
 
** Turn '''OFF S0, S3, Downstream MAIN detectors, and VDCs''' and set '''Downstream MAIN detectors HV to 0.0V'''
 
** Turn '''OFF S0, S3, Downstream MAIN detectors, and VDCs''' and set '''Downstream MAIN detectors HV to 0.0V'''
** Ask for high current only after turning OFF the detectors mentioned in the previous step
+
** Ask for high current (production) only after turning OFF the detectors mentioned in the previous step

Latest revision as of 14:05, 5 February 2020

  • Before taking Counting Runs:
    • Turn ON S0 and S3 (L0.0, L0.1, L0.2, L0.3, L0.4 in both arm's HV GUI)
    • For Raster Check in C-Hole
      • Ask low current <2uA such that T1 rate <100kHz
      • Ask for appropriate raster size and position lock as in WHITE BOARD
      • Follow Checking the HV HOW TOs for shift crew if you need to
      • You can start runs once the position and HV read-back are settled
    • For Detector alignment Check
      • Ask for low current (0.3uA on Ca-48 target)
      • Ask for appropriate raster size and position lock as in WHITE BOARD
      • make sure the T1 rate is ~200kHz
      • turn ON VDC (L6.0, L6.3 in LHRS and L4.5, L4.7 in RHRS) if the T1 rate is good
      • set Downstream MAIN detectors HV to -1900V (L1.1 in both arms), and turn them ON
      • once the position and HV read-back are settled, take runs
      • follow Taking MAIN detector Counting Run if you need to analyse data
  • Once you are done with counting Runs:
    • Turn OFF S0, S3, Downstream MAIN detectors, and VDCs and set Downstream MAIN detectors HV to 0.0V
    • Ask for high current (production) only after turning OFF the detectors mentioned in the previous step