Difference between revisions of "Spring 2021 - Rebuilding Photogun"

From Ciswikidb
Jump to: navigation, search
Line 1: Line 1:
 
===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 >>
 
* S&A jobs (will walk with Chris Gould 4/7 @ 9am UITF)
 
* 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
+
::*fiducialize anode to HV chamber
:: align cathode to anode
+
::*align cathode to anode
:: align LM to cathode (after venting depo)
+
::*align LM to cathode (after venting depo)
:: align HV to chamber Y
+
::*align HV to chamber Y
 
* re-align laser for retro-reflection
 
* 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
Line 16: Line 16:
 
===Depo chamber : Replace schneedle, fix pucks, opportunistic jobs===
 
===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 (like print, but w/o plating)
+
::*fabricate one from 304 (like print, but w/o plating)
:: fabricate one less galling SS
+
::*fabricate one less galling SS
 
* Galling reduced by addition of Mn and Si
 
* Galling reduced by addition of Mn and Si
 
::* [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.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)

Revision as of 10:40, 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 less galling SS
  • Galling reduced by addition of Mn and Si

Other jobs