The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
TY - CONF
AU - Doolittle, L.R.
AU - Babel, S.
AU - Bachimanchi, R.
AU - Benwell, A.L.
AU - Boyes, M.
AU - Brown, G.W.
AU - Campbell, K.S.
AU - Cha, D.
AU - Chase, B.E.
AU - Cullerton, E.
AU - De Long, J.H.
AU - Diaz Cruz, J.A.
AU - Du, Q.
AU - Einstein, J.
AU - Greg, D.B.
AU - Hong, B.
AU - Hovater, C.
AU - Huang, G.
AU - Jones, J.A.
AU - Kelly, R.S.
AU - Klepec, D.W.
AU - McCollough, A.
AU - Ratti, A.
AU - Rivetta, C.H.
AU - Seidman, D.J.
AU - Serrano, C.
AU - Vytla, V.K.
ED - Schaa, Volker RW
ED - He, Yuan
ED - Li, Lu
ED - Zhao, Ning
TI - High Precision RF Control for SRF Cavities in LCLS-II
J2 - Proc. of SRF2017, Lanzhou, China, July 17-21, 2017
C1 - Lanzhou, China
T2 - International Conference on RF Superconductivity
T3 - 18
LA - english
AB - The unique properties of SRF cavities enable a new generation of X-ray light sources in XFEL and LCLS-II. The LCLS-II design calls for 280 L-band cavities to be operated in CW mode with a Q_{L} of 4x10⁷, using Single-Source Single-Cavity control. The target RF field stability is 0.01% and 0.01 degree for the band above 1 Hz. Hardware and software implementing a digital LLRF system has been constructed by a four-lab collaboration to minimize known contributors to cavity RF field fluctuation. Efforts include careful attachment to the phase reference line, and minimizing the effects of RF crosstalk by placing forward and reverse signals in chassis separate from the cavity measurement. A low-noise receiver/digitizer section will allow feedback to operate with high proportional gain without excessive noise being sent to the drive amplifier. Test results will show behavior on prototype cryomodules at FNAL and JLab, ahead of the 2018 final accelerator installation.
PB - JACoW
CP - Geneva, Switzerland
SP - 944
EP - 950
KW - ion
KW - cavity
KW - controls
KW - LLRF
KW - feedback
DA - 2018/01
PY - 2018
SN - 978-3-95450-191-5
DO - 10.18429/JACoW-SRF2017-FRXBA02
UR - http://jacow.org/srf2017/papers/frxba02.pdf
ER -