Difference between revisions of "Spring 2021 - Rebuilding Photogun"

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===HV chamber : Replace cathode electrode ===
 
===HV chamber : Replace cathode electrode ===
 
* Electrodes
 
* Electrodes
::*"old" existing electrode here : https://wiki.jlab.org/ciswiki/index.php/CIS-ASY-R28-3
+
:*"old" existing electrode here : https://wiki.jlab.org/ciswiki/index.php/CIS-ASY-R28-3
 
::*"new" niobium electrode here : https://wiki.jlab.org/ciswiki/index.php/CIS-ASY-R28-1
 
::*"new" niobium electrode here : https://wiki.jlab.org/ciswiki/index.php/CIS-ASY-R28-1
 
* leak test large grain Nb cathode/ceramic/flange assembly : << carlos' logbook entry goes here >>
 
* leak test large grain Nb cathode/ceramic/flange assembly : << carlos' logbook entry goes here >>

Revision as of 10:41, 6 April 2021

HV chamber : Replace cathode electrode

  • Electrodes
  • leak test large grain Nb cathode/ceramic/flange assembly : << carlos' logbook entry goes here >>
  • S&A jobs (will walk with Chris Gould 4/7 @ 9am UITF)
  • fiducialize Nb cathode to 10" flange (old method glued fiducials)
  • (maybe) fiducialize existing 10" flange to HV chamber
  • fiducialize anode to HV chamber
  • align cathode to anode
  • align LM to cathode (after venting depo)
  • align HV to chamber Y
  • re-align laser for retro-reflection
  • vent HV chamber, remove cathode electrode, searching for puck tab

Depo chamber : Replace schneedle, fix pucks, opportunistic jobs

  • fabricate one from 304 (like print, but w/o plating)
  • fabricate one with less galling than 304/316 (addition of Mn and Si)

Other jobs