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Fabrication Technologies of the High Gradient Accelerator Structures at 100MV/m Range
/ Wang, Juwen (SLAC) ; Lewandowski, James (SLAC) ; Van Pelt, John (SLAC) ; Yoneda, Charles (SLAC) ; Gudkov, D (CERN) ; Riddone, Germana (CERN) ; Higo, Toshiyasu (KEK, Tsukuba) ; Takatomi, Toshikazu (KEK, Tsukuba)
A CERN-SLAC-KEK collaboration on high gradient X-band structure research has been established in order to demonstrate the feasibility of the CLIC baseline design for the main linac stably operating at more than 100 MV/m loaded accelerating gradient. Several prototype CLIC structures were successfully fabricated and high power tested [...]
2010
External link: Published version from JACoW
In : 1st International Particle Accelerator Conference, Kyoto, Japan, 23 - 28 May 2010, pp.THPEA064
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2.
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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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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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Fabrication of a Quadrant-type Accelerator Structure for CLIC
/ Higo, T (KEK, Tsukuba) ; Grudiev, A (CERN) ; Higashi, Y (KEK, Tsukuba) ; Kawamata, H (KEK, Tsukuba) ; Riddone, G (CERN) ; Taborelli, M (CERN) ; Takatomi, T T (KEK, Tsukuba) ; Ueno, K (KEK, Tsukuba) ; Watanabe, Y (KEK, Tsukuba) ; Wuensch, Walter (CERN) et al.
2008 - 3 p.
External link: Published version from JACoW
In : 11th European Particle Accelerator Conference, Genoa, Italy, 23 - 27 Jun 2008, pp.WEPP084
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5.
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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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6.
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High Gradient Performance of NLC/GLC X-Band Accelerating Structures
/ Döbert, Steffen ; Adolphsen, Chris ; Boffo, Cristian ; Bowden, Gordon B ; Burke, David ; Carter, Harry ; Chan, Jose ; Dolgashev, Valery A ; Frisch, Josef ; Funahashi, Y et al.
During the past five years, there has been an concerted effort at FNAL, KEK and SLAC to develop accelerator structures that meet the high gradient performance requirements for the Next Linear Collider (NLC) and Global Linear Collider (GLC) initiatives. The structure that resulted is a 60-cm-long, traveling-wave design with low group velocity (< 4% c) and a 150 degree phase advance per cell. [...]
SLAC-PUB-11207.-
Stanford, CA : SLAC, 2005 - 3 p.
External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.372
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7.
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Development of C-band Accelerating Section for SuperKEKB
/ Kamitani, T ; Delerue, N ; Ikeda, M ; Kakihara, K ; Ohsawa, S ; Oogoe, T ; Sugimura, T ; Takatomi, T ; Yamaguchi, S ; Yokoyama, K
For the luminosity upgrade of the present KEK B-factory to SuperKEKB, the injector linac has to increase the positron acceleration energy from 3.5 to 8.0 GeV. In order to double the acceleration field gradient from 21 to 42 MV/m, design studies on C-band accelerator module has started in 2002. [...]
2004
External link: Published version from JACoW
In : 22nd International Linear Accelerator Conference, Lubeck, Germany, 16 - 20 Aug 2004, pp.663
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8.
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High Power test of a low group velocity X-band Accelerator Structure for CLIC
/ Döbert, S (CERN) ; Grudiev, A (CERN) ; Riddone, G (CERN) ; Taborelli, M (CERN) ; Wuensch, W (CERN) ; Zennaro, R (CERN) ; Fukuda, S (KEK, Tsukuba) ; Higashi, Y (KEK, Tsukuba) ; Higo, T (KEK, Tsukuba) ; Matsumoto, S (KEK, Tsukuba) et al.
In recent years evidence has been found that the maximum sustainable gradient in an accelerating structure depends on the rf power flow through the structure. [...]
CERN-AB-2008-069 ; CLIC-Note-767.
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2008 - 4.
Preprint
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9.
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First high power tests of clic prototype accelerating structures with hom waveguide damping
/ Döbert, S (CERN) ; Grudiev, A (CERN) ; Riddone, G (CERN) ; Wuensch, W (CERN) ; Zennaro, R (CERN) ; Higo, T (KEK, Tsukuba) ; Matsumoto, S (KEK, Tsukuba) ; Yokoyama, K (KEK, Tsukuba) ; Adolphsen, C (SLAC) ; Wang, F (SLAC) et al.
Prototype accelerating structures for the Compact Linear Collider (CLIC) are being developed and high-power tested in collaboration between SLAC, KEK and CERN. Several undamped, low group-velocity and strongly tapered prototypes (of the so-called T18 design) have been operated above 100 MV/m average gradients at a very low breakdown rates. [...]
CERN-ATS-2010-204.-
Geneva : CERN, 2010 - 3 p.
Fulltext: PDF; Published version from LINAC10: PDF;
In : 25th Linear Accelerator Conference, Tsukuba, Japan, 12 - 17 Sep 2010, pp.MOP067
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10.
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Results from the CLIC X-BAND structure test program at the NLCTA
/ Adolphsen, Chris (SLAC) ; Bowden, Gordon (SLAC) ; Dolgashev, Valery (SLAC) ; Laurent, Lisa (SLAC) ; Tantawi, Sami (SLAC) ; Wang, Faya (SLAC) ; Wang, W Juwen (SLAC) ; Doebert, Steffen (CERN) ; Grudiev, Alexej (CERN) ; Riddone, Germana (CERN) et al.
As part of a SLAC-CERN-KEK collaboration on high gradient X-band structure research, several prototype structures for the CLIC linear collider study have been tested using two of the high power (300 MW) X-band rf stations in the NLCTA facility at SLAC. These structures differ in terms of their manufacturing (brazed disks and clamped quadrants), gradient profile (amount by which the gradient increases along the structure which optimizes efficiency and maximizes sustainable gradient) and HOM damping (use of slots or waveguides to rapidly dissipate dipole mode energy). [...]
CERN-OPEN-2013-033; SLAC-PUB-13697; CLIC-Note-799.-
Geneva : CERN, 2010 - 4 p.
Preprint: PDF; External link: Published version from PAC09
In : Particle Accelerator Conference 2009, Vancouver, Canada, 04 - 08 May 2009, pp.WE5PFP018
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