Difference between revisions of "18" gun build status as of October 04 2022"

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.

@@ Line 10: / Line 10: @@
 *[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]
-*The gun fully assembled is being vacuum pre-baked to ~150 C  in TL1137 to ensure there are no leaks, and that the NEG models are not shorted out. Marcy installed a, extractor gauge for vacuum monitoring after bake.
+*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.
 *[https://wiki.jlab.org/ciswiki/index.php/18%22_Photogun_ala_GTS Back to 18" Photogun page]