Achievement of Stable Pulsed Operation at 31 MV/m in the STF-2 Cryomodule for the ILC

Yamamoto, Yasuchika; Dohmae, Takeshi; Egi, Masato; Hara, Kazufumi; Honma, Teruya; Kako, Eiji; Kojima, Yuuji; Konomi, Taro; Kota, Nakanishi; Kubo, Takayuki; Matsumoto, Toshihiro; Miura, Takako; Nakai, Hirotaka; Nakanishi, Kota; Park, Gunn-Tae; Saeki, Takayuki; Shimizu, Hirotaka; Shishido, Toshio; Takenaka, Tateru; Umemori, Kensei

doi:10.18429/JACoW-IPAC2017-TUPAB006

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RIS citation export for TUPAB006: Achievement of Stable Pulsed Operation at 31 MV/m in the STF-2 Cryomodule for the ILC

TY - CONF
AU - Yamamoto, Y.
AU - Dohmae, T.
AU - Egi, M.
AU - Hara, K.
AU - Honma, T.
AU - Kako, E.
AU - Kojima, Y.
AU - Konomi, T.
AU - Kota, N.
AU - Kubo, T.
AU - Matsumoto, T.
AU - Miura, T.
AU - Nakai, H.
AU - Nakanishi, K.
AU - Park, G.-T.
AU - Saeki, T.
AU - Shimizu, H.
AU - Shishido, T.
AU - Takenaka, T.
AU - Umemori, K.
ED - Schaa, Volker RW
ED - Arduini, Gianluigi
ED - Pranke, Juliana
ED - Seidel, Mike
ED - Lindroos, Mats
TI - Achievement of Stable Pulsed Operation at 31 MV/m in the STF-2 Cryomodule for the ILC
J2 - Proc. of IPAC2017, Copenhagen, Denmark, 14â19 May, 2017
C1 - Copenhagen, Denmark
T2 - International Particle Accelerator Conference
T3 - 8
LA - english
AB - In the Superconducting RF Test Facility (STF) in KEK, the cooldown test for the STF-2 cryomodule with 12 cavities has been done totally three times since 2014. In 2016, the 3rd cooldown test for the STF-2 cryomodule including the capture cryomodule with 2 cavities, which was used for Quantum Beam Project in 2012, was successfully done. The main purpose is the vector-sum operation with 8 cavities at average accelerating gradient of 31 MV/m as the ILC specification, and the others are the measurement for Lorenz Force Detuning (LFD) and unloaded Q value, and Low Level RF (LLRF) study, etc. During 8 cavities operation, piezo actuators were used for the compensation of LFD, and the feed-forward and vector-sum control system by LLRF worked perfectly for keeping the lowest forward power and the stable flat-top of accelerating gradient. In this paper, the result for the STF-2 cryomodule in the 3rd cooldown test will be presented in detail.
PB - JACoW
CP - Geneva, Switzerland
SP - 1308
EP - 1310
KW - cavity
KW - cryomodule
KW - operation
KW - radiation
KW - accelerating-gradient
DA - 2017/05
PY - 2017
SN - 978-3-95450-182-3
DO - 10.18429/JACoW-IPAC2017-TUPAB006
UR - http://jacow.org/ipac2017/papers/tupab006.pdf
ER -