Vélez, A.; Glock, H.-W.; Glöckner, F.; Schöder, R.; Echevarria, P.; Sharples-Milne, E.; Tsakanian, A.; Wunderer, N.: Status of the high current 1.5 GHz SRF cavity prototypes for VSR demo. In: Lin Bian (IHEP) ... [Ed.] : Proceedings of the 22nd International Conference on RF Superconductivity : SRF2025 : Tokyo, RIKEN Nishina Center in Wako, Japan from 21–26 September, 2025Geneve: JACoW, 2025. - ISBN 978-3-95450-256-1, p. TUP81/1-4
10.18429/JACoW-SRF2025-TUP81
Open Accesn Version
Abstract:
The BESSY Variable pulse-length Storage Ring (VSR) Demo project aimed to provide short and long pulses simultaneously in the BESSY II storage Ring. To achieve this goal HZB has developed high current Continuous Wave (CW) Superconducting Radio Frequency (SRF) cavities operating at 1.5 GHz for 300 mA beams with large damping capabilities to cope with the HOM powers expected. This paper presents the current status, fabrication and lessons learned as results from the delivered prototype by Reseach Instruments and tests carried on at SupraLab HZB.