Difference between revisions of "Detailed Calibration plan"

From PREX Wiki
Jump to navigationJump to search
Line 1: Line 1:
 
== Beamline instrumentation calibration ==
 
== Beamline instrumentation calibration ==
#Check the following has been performed
+
# Check the following has been performed
 
#* 50uA-70uA beam current, through Compton (backgrounds on fingers and Compton photon detector) with no target  
 
#* 50uA-70uA beam current, through Compton (backgrounds on fingers and Compton photon detector) with no target  
 
#* Establish 4x4 raster. Insert lead target.  
 
#* Establish 4x4 raster. Insert lead target.  
 
#* Set Detector and SAM voltages (Dustin M)
 
#* Set Detector and SAM voltages (Dustin M)
  
#Check Conditions OK
+
# Check Conditions OK
 
#*collimator water
 
#*collimator water
 
#*thermocouple temperatures
 
#*thermocouple temperatures
Line 11: Line 11:
 
#*ion chamber stability
 
#*ion chamber stability
  
#Setup Locks (these are necessary for main detectors and SAM calibration)
+
# Setup Locks (these are necessary for main detectors and SAM calibration)
 
#*Slow Target Lock on 4A, 4E (jmenu->"slow locks"-> Orbit Locks Expanded View -> HallATGT)
 
#*Slow Target Lock on 4A, 4E (jmenu->"slow locks"-> Orbit Locks Expanded View -> HallATGT)
 
#* Fast feedback for HallA on (iocse9)
 
#* Fast feedback for HallA on (iocse9)
Line 17: Line 17:
 
#* Should HallAMolLock be on?
 
#* Should HallAMolLock be on?
  
#Coordinate
+
# Coordinate
 
#* Should Compton and Moller DAQ be running during calibration?
 
#* Should Compton and Moller DAQ be running during calibration?
 
#* Dustin and Devi examining SAMs and Detectors with online analyzer during calibration
 
#* Dustin and Devi examining SAMs and Detectors with online analyzer during calibration
 
#* Juan Carlos/Amali/Adam monitor Compton background rates and run the DAQ?
 
#* Juan Carlos/Amali/Adam monitor Compton background rates and run the DAQ?
  
#Calibration Procedure A: with UNSER
+
# Calibration Procedure A: with UNSER
 
#*start at 70uA for 1min (scandata1==value in BCM0l02)
 
#*start at 70uA for 1min (scandata1==value in BCM0l02)
 
#*beam off
 
#*beam off
Line 33: Line 33:
 
#*repeat for 65uA,60uA,55uA,50uA,40uA,30uA,20uA,10uA  
 
#*repeat for 65uA,60uA,55uA,50uA,40uA,30uA,20uA,10uA  
  
#Calibration Procedure B: with pre-calibrated Hall BCM (analog upstream bcm)
+
# Calibration Procedure B: with pre-calibrated Hall BCM (analog upstream bcm)
 
#*start at 70uA for 1min (scandata1==value in BCM0l02)
 
#*start at 70uA for 1min (scandata1==value in BCM0l02)
 
#change current to 75uA
 
#change current to 75uA
Line 42: Line 42:
 
#*repeat for 65uA,60uA,55uA,50uA,40uA,30uA,20uA,10uA  
 
#*repeat for 65uA,60uA,55uA,50uA,40uA,30uA,20uA,10uA  
  
#Calibration Procedure C: for BPMs (Compton bpms not yet calibrated)
+
# Calibration Procedure C: for BPMs (Compton bpms not yet calibrated)
 
#*at 70uA, set gains off for iocse9,iocse10 (Hall) iocse11,iocse12,iocse19,iocinse4 (Inj)
 
#*at 70uA, set gains off for iocse9,iocse10 (Hall) iocse11,iocse12,iocse19,iocinse4 (Inj)
 
#*rperform Calibration Procedure B with pre-calibrated Hall BCM  
 
#*rperform Calibration Procedure B with pre-calibrated Hall BCM  

Revision as of 09:43, 25 June 2019

Beamline instrumentation calibration

  1. Check the following has been performed
    • 50uA-70uA beam current, through Compton (backgrounds on fingers and Compton photon detector) with no target
    • Establish 4x4 raster. Insert lead target.
    • Set Detector and SAM voltages (Dustin M)
  1. Check Conditions OK
    • collimator water
    • thermocouple temperatures
    • radiation monitors
    • ion chamber stability
  1. Setup Locks (these are necessary for main detectors and SAM calibration)
    • Slow Target Lock on 4A, 4E (jmenu->"slow locks"-> Orbit Locks Expanded View -> HallATGT)
    • Fast feedback for HallA on (iocse9)
    • If beam is going through Compton, HallAComLock should probably be on
    • Should HallAMolLock be on?
  1. Coordinate
    • Should Compton and Moller DAQ be running during calibration?
    • Dustin and Devi examining SAMs and Detectors with online analyzer during calibration
    • Juan Carlos/Amali/Adam monitor Compton background rates and run the DAQ?
  1. Calibration Procedure A: with UNSER
    • start at 70uA for 1min (scandata1==value in BCM0l02)
    • beam off
    • wait for 5sec(for unser to equilibrate), take unser pedestal data point for 30sec (scandata1=0)
    • beam on at 75uA
    • check slow target lock is in position
    • check FFB on for HallA
    • check no bpms are saturated on iocse9
    • wait for 5sec(for unser to equilibrate), take next data point for 1min
    • repeat for 65uA,60uA,55uA,50uA,40uA,30uA,20uA,10uA
  1. Calibration Procedure B: with pre-calibrated Hall BCM (analog upstream bcm)
    • start at 70uA for 1min (scandata1==value in BCM0l02)
  2. change current to 75uA
    • check slow target lock is in position
    • check FFB on for HallA
    • check no bpms are saturated on iocse9
    • take next 1min data point
    • repeat for 65uA,60uA,55uA,50uA,40uA,30uA,20uA,10uA
  1. Calibration Procedure C: for BPMs (Compton bpms not yet calibrated)
    • at 70uA, set gains off for iocse9,iocse10 (Hall) iocse11,iocse12,iocse19,iocinse4 (Inj)
    • rperform Calibration Procedure B with pre-calibrated Hall BCM
  1. Beamline instrumentation calibration 0.5 shift Caryn P,
    1. Current ramp for BPM/BCM calibrations and detector pedestals detailed plan
  2. Initial production condition test 0.25 shift Caryn P,
    1. detector and SAM widths
    2. regression sensitivities
    3. beam noise and asymmetry check
    4. collimator water and thermocouple temperatures,
    5. radiation monitors and ion chamber stability
  3. Width studies 0.5 shift KK,
    1. detector and SAM widths, targets, shutters, etc
    2. deinstall shutters at conclusion of test