Difference between revisions of "Spring 2021 - Rebuilding Photogun"

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===Other jobs===
 
* Re-align HV chamber before venting?  => sent request to Gould
 
* (done) Repair stalk heater driver => https://logbooks.jlab.org/entry/3871902
 
 
 
===Replace cathode electrode ===
 
===Replace cathode electrode ===
 
* leak test large grain Nb cathode/ceramic/flange assembly
 
* leak test large grain Nb cathode/ceramic/flange assembly
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===Fix pucks===
 
===Fix pucks===
 
* Inspect and mic pucks against series 30 series dwg [[media:JL0047248 PUCK BODY REV A.pdf]] [[media:MoPuckMount.docx]]
 
* Inspect and mic pucks against series 30 series dwg [[media:JL0047248 PUCK BODY REV A.pdf]] [[media:MoPuckMount.docx]]
 +
 +
===Other jobs===
 +
* Re-align HV chamber before venting?  => sent request to Gould
 +
* (done) Repair stalk heater driver => https://logbooks.jlab.org/entry/3871902

Revision as of 08:52, 6 April 2021

Replace cathode electrode

  • leak test large grain Nb cathode/ceramic/flange assembly
  • fiducialize Nb cathode to 10" flange (old method glued fiducials)
  • (maybe) fiducialize existing 10" flange to HV chamber
  • vent HV chamber, remove cathode electrode, searching for puck tab
  • fiducialize anode to HV chamber
  • align cathode to anode
  • align LM to cathode (after venting depo)
  • align HV to chamber Y and re-align laser for retro-reflection

Replace depo schneedle

  • Make (2) SS schneedle w/o silver plating, replace depo chamber silver plated schneedle media:ACC2003000-0219 schneedle.pdf
  • NF3 leak value => leave as-is
  • align mask, fix w/ two set screws
  • replace K source with Alvatec Sb source?

Fix pucks

Other jobs