Difference between revisions of "18" gun build status as of October 04 2022"
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*[https://logbooks.jlab.org/entry/4033360 gun assembled, under vacuum and leak checked] | *[https://logbooks.jlab.org/entry/4033360 gun assembled, under vacuum and leak checked] | ||
*[https://logbooks.jlab.org/entry/4041398 gun under vacuum moved to TL1137] | *[https://logbooks.jlab.org/entry/4041398 gun under vacuum moved to TL1137] | ||
| − | *The gun fully assembled is being vacuum pre-baked to ~150 C in TL1137 to ensure there are no leaks, and that the NEG | + | *The gun fully assembled is being vacuum pre-baked to ~150 C in TL1137 to ensure there are no leaks, and that the NEG modules are not shorted out. Marcy installed an extractor gauge for vacuum monitoring after bake. |
*The plan is to leave the gun under vacuum until ready for installation in UITF beam line, with plans to install in CEBAF tunnel in March 2023. | *The plan is to leave the gun under vacuum until ready for installation in UITF beam line, with plans to install in CEBAF tunnel in March 2023. | ||
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| + | *[https://wiki.jlab.org/ciswiki/index.php/18%22_Photogun_ala_GTS Back to 18" Photogun page] | ||
Latest revision as of 07:39, 5 October 2022
- NEG ZAO modules have been installed and wired by Marcy Stutzman
- Vacuum chamber was cleaned, but NEG coating left untouched
- Vacuum chamber was baked with extractor gauge for monitoring
- Chamber was vented for NEG screen installation, then moved to LERF Lab 3A clean room
- beam tracking reminder with titled and biased anode
- anode assembled
- cathode assembled
- assembly time-lapse video
- gun assembly S&A
- gun assembled, under vacuum and leak checked
- gun under vacuum moved to TL1137
- The gun fully assembled is being vacuum pre-baked to ~150 C in TL1137 to ensure there are no leaks, and that the NEG modules are not shorted out. Marcy installed an extractor gauge for vacuum monitoring after bake.
- The plan is to leave the gun under vacuum until ready for installation in UITF beam line, with plans to install in CEBAF tunnel in March 2023.