The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
TY - CONF AU - Compton, C. AU - Ao, H. AU - Asciutto, J. AU - Craft, J. AU - Elliott, K. AU - Hartung, W. AU - Kim, S.H. AU - Metzgar, E.S. AU - Miller, S.J. AU - Popielarski, J.T. AU - Popielarski, L. AU - Saito, K. AU - Xu, T. ED - Michel, Peter ED - Arnold, André ED - Schaa, Volker RW TI - The Facility for Rare Isotope Beams Superconducting Cavity Production Status and Findings Concerning Surface Defects J2 - Proc. of SRF2019, Dresden, Germany, 30 June-05 July 2019 CY - Dresden, Germany T2 - International Conference on RF Superconductivity T3 - 19 LA - english AB - The Facility for Rare Isotope Beams (FRIB), located on the campus of Michigan State University (MSU) will require 324 Superconducting Radio Frequency (SRF) cavities in the driver linac. Four types of cavities of two classes, quarter-wave (β=0.041 and 0.085) and half-wave (β=0.29 and 0.53), will be housed in 46 cryomodules. To date, FRIB has tested over 300 cavities in vertical Dewar tests as part of the certification procedures. Incoming cavities, fabricated in industry, are sequenced through acceptance inspection and checked for non-conformance. If accepted, the cavities are processed, assembled onto a vertical test stand, and cold tested. A large database of cavity surface images has been collected with the aid of a borescope camera. Borescope inspection is a standard step that is performed at incoming inspection, post-acid bulk etch, and after failed tests (if necessary) for each cavity, in order to locate any non-conformances. Findings of surface defects relating to degraded cavity performance will be presented. PB - JACoW Publishing CP - Geneva, Switzerland SP - 31 EP - 35 KW - cavity KW - linac KW - SRF KW - niobium KW - status DA - 2019/08 PY - 2019 SN - "" SN - 978-3-95450-211-0 DO - doi:10.18429/JACoW-SRF2019-MOP005 UR - http://jacow.org/srf2019/papers/mop005.pdf ER -