Difference between revisions of "Spring 2021 - Rebuilding Photogun"

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===Other jobs===
+
===HV chamber : Replace cathode electrode ===
* Re-align HV chamber before venting?  => sent request to Gould
+
* Electrodes
* (done) Repair stalk heater driver => https://logbooks.jlab.org/entry/3871902
+
:*"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
===Replace cathode electrode ===
+
* leak test large grain Nb cathode/ceramic/flange assembly : << carlos' logbook entry goes here >>
* leak test large grain Nb cathode/ceramic/flange assembly
+
* S&A jobs (will walk with Chris Gould 4/7 @ 9am UITF)
* fiducialize Nb cathode to 10" flange (old method glued fiducials)
+
:*fiducialize Nb cathode to 10" flange (old method glued fiducials)
* (maybe) fiducialize existing 10" flange to HV chamber
+
:*(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
 
* 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 ===
+
===Depo chamber : Replace schneedle, fix pucks, opportunistic jobs===
 
* Make (2) SS schneedle w/o silver plating, replace depo chamber silver plated schneedle [[media:ACC2003000-0219 schneedle.pdf]]
 
* Make (2) SS schneedle w/o silver plating, replace depo chamber silver plated schneedle [[media:ACC2003000-0219 schneedle.pdf]]
 +
:*fabricate one from 304 SS and one from Nitronic 60 https://mis.jlab.org/mis/apps/job_request/mshop/view_request.cfm?request_id=330210&code=1
 +
::* [https://www.hpalloy.com/Alloys/descriptions/NITRONIC60.aspx?kw=%2Bnitronic%20%2B60&cpn=48402520&utm_term=%2Bnitronic%20%2B60&utm_campaign=NITRONIC&utm_source=adwords&utm_medium=ppc&hsa_net=adwords&hsa_tgt=kwd-41394160017&hsa_ad=393453120372&hsa_acc=6124394374&hsa_grp=1610180530&hsa_mt=b&hsa_cam=48402520&hsa_kw=%2Bnitronic%20%2B60&hsa_ver=3&hsa_src=g&gclid=EAIaIQobChMIzJv0vOnp7wIVypyzCh0bPAmCEAAYASAAEgLYn_D_BwE Nitronic 60 data sheet] (Nitronic trademark AK Steel)
 +
::* [https://www.associatedsteel.com/stainless-steels/17-4-stainless-steel-pump-shaft-stainless-custom-450-stainless-tgp-mir50/ Mir50] (Mir50 trademark ASC Steel)
 
* NF3 leak value => leave as-is
 
* NF3 leak value => leave as-is
 
* align mask, fix w/ two set screws
 
* align mask, fix w/ two set screws
 
* replace K source with Alvatec Sb source?
 
* replace K source with Alvatec Sb source?
 +
* Inspect and mic pucks against series 30 series dwg [[media:JL0047248 PUCK BODY REV A.pdf]] [[media:MoPuckMount.docx]]
  
===Fix pucks===
+
===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 16:06, 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

Other jobs