The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
TY - CONF
AU - Rimmer, R.A.
AU - Cheng, G.
AU - Ciovati, G.
AU - Clemens, W.A.
AU - Daly, E.
AU - Davis, G.K.
AU - Follkie, J.
AU - Forehand, D.
AU - Fors, F.
AU - Guo, J.
AU - Henry, J.
AU - Macha, K.
AU - Marhauser, F.
AU - Myneni, G.R.
AU - Turlington, L.
ED - Schaa, Volker RW
ED - He, Yuan
ED - Li, Lu
ED - Zhao, Ning
TI - Upgraded Cavities for the CEBAF Cryomodule Rework Program
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 CEBAF cryomodule rework program has been a successful tool to recover and maintain the energy reach of the original baseline 6 GeV accelerator. The weakest original modules with eight five-cell cavities assembled in four 'pairs', with a specification when new of 20 MV per cryomodule (5 MV/m), are disassembled, re-cleaned with modern techniques and re-qualified to at least 50 MV (12.5 MV/m), (leading to the acronym 'C50'). The cost per recovered MV is much less than building new modules. However over time the stock of weak modules is being used up and the voltage gain per rework cycle is diminishing. In an attempt to increase the gain per cycle it is proposed to rework the cavities by replacing the original accelerating cells with new ones of an improved shape and better material. The original CEBAF HOM and FPC end groups are retained. The goal is to achieve up to 75 MV (18.75 MV/m) for the reworked module ('C75'). We report on the fabrication experience and test results of the first trial pair, containing two such reworked cavities.
PB - JACoW
CP - Geneva, Switzerland
SP - 168
EP - 172
KW - cavity
KW - ion
KW - HOM
KW - cryomodule
KW - GUI
DA - 2018/01
PY - 2018
SN - 978-3-95450-191-5
DO - 10.18429/JACoW-SRF2017-MOPB049
UR - http://jacow.org/srf2017/papers/mopb049.pdf
ER -