Vacuum Characterization and Improvement for the Jefferson Lab Polarized Electron Source
Conference
·
OSTI ID:1223477
- Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
- Old Dominion Univ., Norfolk, VA (United States)
Operating the JLab polarized electron source with high reliability and long lifetime requires vacuum near the XHV level, defined as pressure below 7.5×10-13 Torr. This paper describes ongoing vacuum research at Jefferson Lab including characterization of outgassing rates for surface coatings and heat treatments, ultimate pressure measurements, investigation of pumping including an XHV cryopump, and characterization of ionization gauges in this pressure regime.
- Research Organization:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- DOE Contract Number:
- AC05-06OR23177
- OSTI ID:
- 1223477
- Report Number(s):
- JLAB-ACC-15-2024; DOE/OR/23177-3538; TRN: US1601443
- Resource Relation:
- Conference: IPAC 2015, Richmond, VA (United States), 3-8 May 2015
- Country of Publication:
- United States
- Language:
- English
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OSTI ID:1223477