Difference between revisions of "Spring 2021 - Rebuilding Photogun"

From Ciswikidb
Jump to: navigation, search
Line 2: Line 2:
 
* "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 >>
 
* 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

Revision as of 09:41, 6 April 2021

Replace cathode electrode

  • "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
  • leak test large grain Nb cathode/ceramic/flange assembly : << carlos' logbook entry goes here >>
  • 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