Difference between revisions of "Robust Meeting - Nov 19, 2020"

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;Can we be ready for a Feb 1 to Mar 15 install period?
 
;Can we be ready for a Feb 1 to Mar 15 install period?
 
#(Carlos) The photocathode lifetime at UITF is REALLY bad, the field emission at 200 kV certainly doesn’t help (is it the sole problem?).  So take apart gun polish electrode, krypton process until there’s NO field emission  
 
#(Carlos) The photocathode lifetime at UITF is REALLY bad, the field emission at 200 kV certainly doesn’t help (is it the sole problem?).  So take apart gun polish electrode, krypton process until there’s NO field emission  
 +
 
#(Carlos) Align the gun so that the cathode AND the anode are at normal incidence relative to the beamline and trajectory  
 
#(Carlos) Align the gun so that the cathode AND the anode are at normal incidence relative to the beamline and trajectory  
#(Joe/Shukui) Align the rest of the beamline  
+
 
 +
#(Joe/Shukui) Align the rest of the beamline
 +
:As-found of Y-chamber, CEBAF's is problematic, don't let Hansknecht design vacuum chambers  :)
 +
:Review beam line as-found, I don't link 80/20, too many knobs, did not use this at CEBAF purposely
 +
 
 
#(What is problem ... controls or vacuum, can we fix it sooner) Fix the chopper slit  
 
#(What is problem ... controls or vacuum, can we fix it sooner) Fix the chopper slit  
 +
 
#(Yan, if chopper fixed can you set this up, test ability to neck down current?) setup the chopper phases  
 
#(Yan, if chopper fixed can you set this up, test ability to neck down current?) setup the chopper phases  
 +
 
#(Marcy, find or buy the pump) Replace the ion pump at the chopper chamber  
 
#(Marcy, find or buy the pump) Replace the ion pump at the chopper chamber  
 +
 
#(Matt???, or Mamun) Add load lock to depo chamber  
 
#(Matt???, or Mamun) Add load lock to depo chamber  
 +
 
#(Mamun, what's the plan??) Modify depo chamber to include new chemical sources  
 
#(Mamun, what's the plan??) Modify depo chamber to include new chemical sources  
 +
 
#(Attempt to better align the mask  
 
#(Attempt to better align the mask  
 +
 
#(Joe/Riad) Add the polarimeter  
 
#(Joe/Riad) Add the polarimeter  
 +
 
#(Matt - ???) A3 is in the wrong place, at least in terms of protecting the booster  
 
#(Matt - ???) A3 is in the wrong place, at least in terms of protecting the booster  
 +
 
#(Need beam time maybe??) Beam appears far right at ITVK203A, beam appears far left at ITVK401, maybe the alignment of the beamline will help?  
 
#(Need beam time maybe??) Beam appears far right at ITVK203A, beam appears far left at ITVK401, maybe the alignment of the beamline will help?  
 +
: Yan (or Joe volunteers) for ~1 shift end of December to evaluate orbit to keV spectrometer
 +
 
#(Joe/Carlos) Install vertical Wien
 
#(Joe/Carlos) Install vertical Wien
 +
:B-field => shop is re-filling steel upper/lower plates (due Jan, then MMF), PS exists
 +
:E-field => (6) new electrodes arrived,  HVPS installed, CEBAF style switcher will be available
 +
:Wien Quads crosses => purchased enough for (4) CEBAF, (2) UITF, (2) spares, many steps but ready Jan, + viewer mods

Revision as of 12:26, 19 November 2020

Meeting Info
Can we be ready for a Feb 1 to Mar 15 install period?
  1. (Carlos) The photocathode lifetime at UITF is REALLY bad, the field emission at 200 kV certainly doesn’t help (is it the sole problem?). So take apart gun polish electrode, krypton process until there’s NO field emission
  1. (Carlos) Align the gun so that the cathode AND the anode are at normal incidence relative to the beamline and trajectory
  1. (Joe/Shukui) Align the rest of the beamline
As-found of Y-chamber, CEBAF's is problematic, don't let Hansknecht design vacuum chambers  :)
Review beam line as-found, I don't link 80/20, too many knobs, did not use this at CEBAF purposely
  1. (What is problem ... controls or vacuum, can we fix it sooner) Fix the chopper slit
  1. (Yan, if chopper fixed can you set this up, test ability to neck down current?) setup the chopper phases
  1. (Marcy, find or buy the pump) Replace the ion pump at the chopper chamber
  1. (Matt???, or Mamun) Add load lock to depo chamber
  1. (Mamun, what's the plan??) Modify depo chamber to include new chemical sources
  1. (Attempt to better align the mask
  1. (Joe/Riad) Add the polarimeter
  1. (Matt - ???) A3 is in the wrong place, at least in terms of protecting the booster
  1. (Need beam time maybe??) Beam appears far right at ITVK203A, beam appears far left at ITVK401, maybe the alignment of the beamline will help?
Yan (or Joe volunteers) for ~1 shift end of December to evaluate orbit to keV spectrometer
  1. (Joe/Carlos) Install vertical Wien
B-field => shop is re-filling steel upper/lower plates (due Jan, then MMF), PS exists
E-field => (6) new electrodes arrived, HVPS installed, CEBAF style switcher will be available
Wien Quads crosses => purchased enough for (4) CEBAF, (2) UITF, (2) spares, many steps but ready Jan, + viewer mods