New results of development on high efficiency high gradient superconducting rf cavities
Conference
·
OSTI ID:1223452
- Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Peking Univ., Beijing (China)
- OTIC, Ningxia (China)
We report on the latest results of development on high-efficiency high-gradient superconducting radio frequency (SRF) cavities. Several 1-cell cavities made of large-grain niobium (Nb) were built, processed and tested. Two of these cavities are of the Low Surface Field (LSF) shape. Series of tests were carried out following controlled thermal cycling. Experiments toward zero-field cooling were carried out. The best experimentally achieved results are Eacc = 41 MV/m at Q0 = 6.5×1010 at 1.4 K by a 1-cell 1.3 GHz large-grain Nb TTF shape cavity and Eacc = 49 MV/m at Q0 = 1.5×1010 at 1.8 K by a 1-cell 1.5 GHz large-grain Nb CEBAF upgrade low-loss shape cavity.
- Research Organization:
- Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
- DOE Contract Number:
- AC05-06OR23177
- OSTI ID:
- 1223452
- Report Number(s):
- JLAB-ACC--15-2075; DOE/OR/23177--3432
- Country of Publication:
- United States
- Language:
- English
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