Resonance Control for Narrow Bandwidth PIP-II Cavities

Warren Schappert, Jeremiah Holzbauer, Yuriy Pischalnikov, Schaa, Volker RW (Ed.), Yamazaki, Yoshishige (Ed.), McCausey, Amy (Ed.), Facco, Alberto (Ed.)
The PIP-II project at FNAL calls for a SRF pulsed proton driver linac to support the expanding neutrino physics program including DUNE/LBNF. The relatively low beam current and high quality factors called for in the design means that these cavities will be operated with small RF bandwidths, meaning that they will be sensitive to microphonics. Combined with a 20 Hz pulsed operational structure and the use of four different, complex cavity geometries means that resonance control will be extremely
more » ... l will be extremely challenging. Work is ongoing at FNAL to develop active resonance stabilization techniques using fast piezoelectric tuners in support of PIP-II. These techniques as well as testing and development results using a prototype, dressed low-beta single-spoke cavity will be presented along with an outlook for future efforts.
doi:10.18429/jacow-linac2016-thplr038 fatcat:a467lwvo3rdsxmg5gu2w35xzfa