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]
  
*[https://wiki.jlab.org/ciswiki/index.php/18%22_Photogun_ala_GTS Back to 18" Photogun page]
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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 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]


Back to 18" Photogun page