Difference between revisions of "Must, Should and Likes"
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*Replace old NEG WP-1250 cartridges with modern SAES UHV 14000 wafer modules [https://www.saesgetters.com/products/zao-wafer-modules] | *Replace old NEG WP-1250 cartridges with modern SAES UHV 14000 wafer modules [https://www.saesgetters.com/products/zao-wafer-modules] | ||
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| + | [https://wiki.jlab.org/ciswiki/index.php/18%22_Photogun_ala_GTS Back to 18" Photogun page] | ||
Revision as of 15:26, 1 July 2021
Must
- Achieve and sustain ~1E-12 Torr vacuum conditions
- Operate reliably at 200 kV without field emission
- Be tested with 200 keV beam in UITF
Should
- Compensate the beam kick induced by the gun geometry (insulator-cathode assembly perpendicular to anode-cathode gap) and construction (NEG modules placed on bottom half of the vacuum chamber)
- Improve vacuum conditions in the anode drift tube
Like
- Replace old NEG WP-1250 cartridges with modern SAES UHV 14000 wafer modules [1]