Refining and Maintaining the Optimal Performance of the CEBAF SRF Systems
CEBAF at Jefferson Lab is striving to achieve its maximum reliability at the maximum deliverable energy for physics experiments. The most critical part of this is the acceleration systems in the two linacs. The individual limiting characteristics of the 320 srf cavities, each with its own klystron and control system, continue to be refined as is the system for providing optimal setup tools to operations. The field-emission-stimulated discharges at the cold rf waveguide input window continue as the energy-limiting effect. In addition, operation at increased rf power levels have produced unanticipated heating in the region near the warm polymeric rf windows. The latter has stimulated the migration to a more durable ceramic replacement window. During 2000, CEBAF encountered its first cryomodule helium leak into beam vacuum, most likely through an indium wire seal. Characterization of the leak and accommodation methods used will be described.
- Research Organization:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Organization:
- USDOE Office of Energy Research (ER) (US)
- DOE Contract Number:
- AC05-84ER40150
- OSTI ID:
- 783609
- Report Number(s):
- JLAB-ACC-01-10; DOE/ER/40150-1862; TRN: US0104019
- Resource Relation:
- Conference: PAC 2001, Chicago, IL (US), 06/18/2001--06/22/2001; Other Information: PBD: 1 Jun 2001
- Country of Publication:
- United States
- Language:
- English
Similar Records
Achieving 800kW CW Beam Power and Continuing Energy Improvements in CEBAF
Operating experience with superconducting cavities at Jefferson Lab