Difference between revisions of "Spring 2021 - Rebuilding Photogun"
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| Line 3: | Line 3: | ||
* (done) Repair stalk heater driver => https://logbooks.jlab.org/entry/3871902 | * (done) Repair stalk heater driver => https://logbooks.jlab.org/entry/3871902 | ||
| − | === | + | ===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 |
| − | * fiducialize HV chamber | + | * vent HV chamber, remove cathode electrode, searching for puck tab |
| − | * align HV to chamber Y | + | * 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]] | * 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 | * 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? | ||
| + | |||
| + | ===Fix pucks=== | ||
Revision as of 14:59, 5 April 2021
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
- 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?