The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
TY - CONF AU - Ma, Y. AU - Fong, K. AU - Keir, J.J. AU - Kishi, D. AU - Koscielniak, S.R. AU - Lang, D. AU - Laxdal, R.E. AU - Liu, S.L. AU - Sekhon, R.S. AU - Wang, X. ED - Michel, Peter ED - Arnold, André ED - Schaa, Volker RW TI - Microphonics Suppression Study in ARIEL e-Linac Cryomodules 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 - Now the stage of the 30 MeV portion of ARIEL (The Advanced Rare Isotope Laboratory) e-Linac (1.3 GHz, SRF) is under commissioning which includes an injector cryomodule (ICM) with a single nine-cell cavity and the 1st accelerator cryomodule (ACM1) with two cavities configuration. The two ACM1 cavities are driven by a single klystron with vector-sum control and running in CW mode. We have observed a ponderomotive instability in ACM1 driven by the Lorentz force and seeded through microphonics that impacts beam stability [1-5]. Extensive damping has been implemented during a recent shut-down. The beam test results show 20 MeV acceleration gain can be reached by ACM1. A fast piezoelectric (Pie-zo) tuner is under development to allow a fast tuning compensation for the e-Linac cavities. In this paper, the progress of the microphonics suppression of Cryomod-ules is presented. PB - JACoW Publishing CP - Geneva, Switzerland SP - 136 EP - 140 KW - cavity KW - cryomodule KW - GUI KW - linac KW - pick-up DA - 2019/08 PY - 2019 SN - "" SN - 978-3-95450-211-0 DO - doi:10.18429/JACoW-SRF2019-MOP036 UR - http://jacow.org/srf2019/papers/mop036.pdf ER -