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1.
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High-gradient breakdown studies of an X -band Compact Linear Collider prototype structure
/ Wu, Xiaowei (Tsinghua U., Beijing ; Tsinghua U., Beijing, KLPRI) ; Shi, Jiaru (Tsinghua U., Beijing ; CERN ; Tsinghua U., Beijing, KLPRI) ; Chen, Huaibi (Tsinghua U., Beijing) ; Shao, Jiahang (Tsinghua U., Beijing ; Tsinghua U., Beijing, KLPRI) ; Abe, Tetsuo (KEK, Tsukuba) ; Higo, Toshiyasu (KEK, Tsukuba) ; Matsumoto, Shuji (KEK, Tsukuba) ; Wuensch, Walter (CERN)
A Compact Linear Collider prototype traveling-wave accelerator structure fabricated at Tsinghua University was recently high-gradient tested at the High Energy Accelerator Research Organization (KEK). This X-band structure showed good high-gradient performance of up to 100 MV/m and obtained a breakdown rate of $1.27×10^{−8}$ per pulse per meter at a pulse length of 250 ns. [...]
2017 - 11 p.
- Published in : Phys. Rev. Accel. Beams 20 (2017) 052001
Fulltext: PDF;
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2.
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High Gradient Properties of a CLIC Prototype Accelerating Structure made by Tsinghua University
/ Wu, Xiaowei (Tsinghua U., Beijing ; Tsinghua U., Beijing, KLPRI) ; Chen, Huaibi (Tsinghua U., Beijing ; Tsinghua U., Beijing, KLPRI) ; Higo, Toshiyasu (KEK, Tsukuba) ; Matsumoto, Shuji (KEK, Tsukuba) ; Shi, Jiaru (Tsinghua U., Beijing ; Tsinghua U., Beijing, KLPRI) ; Wuensch, Walter (CERN)
A CLIC prototype structure, T24_THU_#1, was recently high-gradient tested at KEK X-band test stand, Nextef. The copper parts of this 24-cell TW structure were delivered from CERN, were bonded and brazed, bench-tested and tuned in Tsinghua University. [...]
CERN-ACC-2016-131; CLIC-Note-1104.-
2016 - 4 p.
- Published in : 10.18429/JACoW-IPAC2016-THPOR041
Published version from JACoW: PDF;
In : 7th International Particle Accelerator Conference, Busan, Korea, 8 - 13 May 2016, pp.THPOR041
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3.
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Comparison of High Gradient Performance in Varying Cavity Geometries
/ Higo, Toshiyasu (KEK, Tsukuba) ; Abe, Tetsuo (KEK, Tsukuba) ; Arakida, Yoshio (KEK, Tsukuba) ; Higashi, Yasuo (Okinawa Inst. Sci. Tech.) ; Matsumoto, Shuji (KEK, Tsukuba) ; Shidara, Tetsuo (KEK, Tsukuba) ; Takatomi, Toshikazu (KEK, Tsukuba) ; Yamanaka, Masashi (KEK, Tsukuba) ; Grudiev, Alexej (CERN) ; Riddone, Germana (CERN) et al.
Four types of CLIC prototype TW accelerator structures were high-gradient tested at Nextef, KEK, up to 100 MV/m level and the fifth is under test now. The ramping speed of each processing and the resultant breakdown rate were compared among them. [...]
2013 - 3 p.
- Published in : (2013) , pp. WEPFI018
Fulltext: PDF; External link: JACoW server
In : 4th International Particle Accelerator Conference, Shanghai, China, 12 - 17 May 2013, pp.WEPFI018
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4.
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Achievements of KEKB
/ Abe, Tetsuo (KEK, Tsukuba) ; Akai, Kazunori (KEK, Tsukuba) ; Akasaka, Norimasa (KEK, Tsukuba) ; Akemoto, Mitsuo (KEK, Tsukuba) ; Akiyama, Atsuyoshi (KEK, Tsukuba) ; Arinaga, Mitsuhiro (KEK, Tsukuba) ; Cai, Yunhai (SLAC) ; Ebihara, Kiyokazu (KEK, Tsukuba) ; Egawa, Kazumi (KEK, Tsukuba) ; Enomoto, Atsushi (KEK, Tsukuba) et al.
The machine commissioning of KEKB started in December 1998 and its operation was terminated at the end of June 2010 to upgrade KEKB to SuperKEKB. In this paper, we summarize the history of KEKB and show the achievements made there..
2013
- Published in : Prog. Theor. Exp. Phys. 2013 (2013) 03A001
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5.
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Breakdown characteristics in DC spark experiments of copper focusing on purity and hardness
/ Yokoyama, Kazue (KEK, Tsukuba) ; Fukuda, Shigeki (KEK, Tsukuba) ; Higashi, Yasuo (KEK, Tsukuba) ; Higo, Toshi (KEK, Tsukuba) ; Matsumoto, Shuji (KEK, Tsukuba) ; Santiago-Kern, Ana Rocia (CERN) ; Pasquino, Chiara (CERN) ; Calatroni, Sergio (CERN) ; Wuensch, Walter (CERN)
The breakdown characteristics related to the differences in purity and hardness were investigated for several types of copper using a DC spark test system. Three types of oxygen-free copper (OFC) materials, usual class 1 OFC 7-nine large-grain copper and 6-nine hot-isotropic-pressed (HIP) copper with/without diamond finish, were tested with the DC spark test system. [...]
CERN-OPEN-2011-028; CLIC-Note-868.-
Geneva : CERN, 2010 - 4 p.
Preprint: PDF; Published version from LINAC10: PDF;
In : 25th Linear Accelerator Conference, Tsukuba, Japan, 12 - 17 Sep 2010, pp.MOP075
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Advances in X-band TW Accelerator Structures Operating in the 100 MV/m Regime
/ Higo, Toshiyasu (KEK, Tsukuba) ; Higashi, Yasuo (KEK, Tsukuba) ; Matsumoto, Shuji (KEK, Tsukuba) ; Yokoyama, Kazue (KEK, Tsukuba) ; Adolphsen, Chris (SLAC) ; Dolgashev, Valery (SLAC) ; Jensen, Aaron (SLAC) ; Laurent, Lisa (SLAC) ; Tantawi, Sami (SLAC) ; Wang, Faya (SLAC) et al.
A CERN-SLAC-KEK collaboration on high gradient X-band accelerator structure development for CLIC has been ongoing for three years. The major outcome has been the demonstration of stable 100 MV/m gradient operation of a number of CLIC prototype structures [...]
2010
External link: Published version from JACoW
In : 1st International Particle Accelerator Conference, Kyoto, Japan, 23 - 28 May 2010, pp.THPEA013
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8.
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ILC Reference Design Report Volume 3 - Accelerator
/ Phinney, Nan (ed.) (SLAC) ; Toge, Nobukazu (ed.) (KEK, Tsukuba) ; Walker, Nicholas J. (ed.) (DESY) ; Aarons, Gerald (SLAC) ; Abe, Toshinori (Tokyo U.) ; Abernathy, Jason (Victoria U.) ; Ablikim, Medina (Beijing, Inst. High Energy Phys.) ; Abramowicz, Halina (Tel Aviv U.) ; Adey, David (Birmingham U.) ; Adloff, Catherine (Annecy, LAPP) et al.
The International Linear Collider (ILC) is a 200-500 GeV center-of-mass high-luminosity linear electron-positron collider, based on 1.3 GHz superconducting radio-frequency (SCRF) accelerating cavities. [...]
arXiv:0712.2361 ; FERMILAB-PUB-07-833-AD.
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2007 - 339.
Fermilab Library Server - Full text - Fulltext
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