HIGH Q0 AT MEDIUM FIELDS IN Nb3Sn SRF CAVITIES AT 4.2 K
Nb3Sn has proven itself to be a very promising alternative SRF material. With twice the critical temperature of niobium cavities, 1.3 GHz Nb3Sn cavities can achieve quality factors on the order of 1010 even at 4.2 K, significantly reducing cryogenic infrastructure and operational costs. In addition, its large predicted superheating field may allow for maximum accelerating gradients up to twice that of niobium for high energy applications. In this work, we report on new cavity results fromthe CornellNb3Sn SRF program demonstrating a significant improvement in the maximum field achieved with high Q0 in a Nb3Sn cavity. At 4.2 K, accelerating gradients above 16MV/m were obtainedwith Q0 of 8 × 109, showing the potential of this material for future applications. In addition to this result, current limitations are discussed.
- Research Organization:
- Argonne National Laboratory (ANL)
- Sponsoring Organization:
- National Science Foundation (NSF)
- DOE Contract Number:
- AC02-06CH11357
- OSTI ID:
- 1335917
- Country of Publication:
- United States
- Language:
- English
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