CERN Accelerating science

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1.
Search for Subsolar-Mass Binaries in the First Half of Advanced LIGO’s and Advanced Virgo’s Third Observing Run / LIGO Scientific Collaboration
We report on a search for compact binary coalescences where at least one binary component has a mass between 0.2 $M_\odot$ and 1.0 $M_\odot$ in Advanced LIGO and Advanced Virgo data collected between 1 April 2019 1500 UTC and 1 October 2019 1500 UTC. We extend previous analyses in two main ways: we include data from the Virgo detector and we allow for more unequal mass systems, with mass ratio $q \geq 0.1$. [...]
arXiv:2109.12197; LIGO-P2100163-v8.- 2022-08-05 - 16 p. - Published in : Phys. Rev. Lett. 129 (2022) 061104 Fulltext: PDF;
2.
STF-2 Cryomodule Performance and New Input Coupler R&D; for ILC / Yamamoto, Yasuchika (KEK, Tsukuba) ; Honma, Teruya (KEK, Tsukuba) ; Kako, Eiji (KEK, Tsukuba) ; Kojima, Yuuji (KEK, Tsukuba) ; Matsumoto, Toshihiro (KEK, Tsukuba) ; Michizono, Shinichiro (KEK, Tsukuba) ; Nakai, Hirotaka (KEK, Tsukuba) ; Shishido, Toshio (KEK, Tsukuba) ; Yamamoto, Akira (KEK, Tsukuba) ; Julie, Charles (CERN) et al.
The high power test for STF -2 cryomodule with twelve cavities has completed successfully in 2015. It became clear the average accelerating gradient was 30.3 MV/m, eight cavities achi eved above 31.5 MV/m as the ILC specification, and three cavities had the significant performance degradation by heavy field emission due to the additional clean room work in t he STF tunnel. [...]
SISSA, 2016 - 6 p. - Published in : PoS ICHEP2016 (2016) 066 Fulltext: PDF; External link: PoS server
In : 38th International Conference on High Energy Physics, Chicago, IL, USA, 03 - 10 Aug 2016, pp.066
3.
The First Beam Recirculation and Beam Tuning in the Compact ERL at KEK / Sakanaka, Shogo ; Adachi, Masahiro ; Adachi, Shin-ichi ; Akemoto, Mitsuo ; Arakawa, Dai ; Asaoka, Seiji ; Enami, Kazuhiro ; Endo, Kuninori ; Fukuda, Shigeki ; Furuya, Takaaki et al.
Superconducting(SC)-linac-based light sources, which can produce ultra-brilliant photon beams in CW operation, are attracting worldwide attention. In KEK, we have been conducting R&D; efforts towards the energy-recovery-linac(ERL)-based light source* since 2006. [...]
CERN-ACC-2014-380.- 2014 - 4 p. - Published in : (2014) , pp. TUPP075 Fulltext: tupp075 - PDF; tupp075_2 - PDF; External link: JACoW server
In : 27th Linear Accelerator Conference, Geneva, Switzerland, 31 Aug - 5 Sep 2014, pp.TUPP075
4.
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
5.
Development of the KEK-B Superconducting Crab Cavity / Hosoyama, K (KEK, Tsukuba) ; Akai, K (KEK, Tsukuba) ; Ebihara, K (KEK, Tsukuba) ; Furuya, T (KEK, Tsukuba) ; Hara, H (Mitsubishi, Kobe) ; Hara, K (KEK, Tsukuba) ; Honma, T (KEK, Tsukuba) ; Kabe, A (KEK, Tsukuba) ; Kojima, Y (KEK, Tsukuba) ; Mitsunobu, S (KEK, Tsukuba) et al.
2008 - 5 p. External link: Published version from JACoW
In : 11th European Particle Accelerator Conference, Genoa, Italy, 23 - 27 Jun 2008, pp.THXM02
6.
First Test Results of ILC/STF Cryogenic System at KEK / Kaneda, S ; Hara, K (KEK, Tsukuba) ; Hosoyama, K (KEK, Tsukuba) ; Ichitani, T ; Kabe, A (KEK, Tsukuba) ; Kanekiyo, T ; Kojima, Y (KEK, Tsukuba) ; Nakai, H (KEK, Tsukuba) ; Nakanishi, K (KEK, Tsukuba) ; Noguchi, M et al.
2008 - 3 p. External link: Published version from JACoW
In : 11th European Particle Accelerator Conference, Genoa, Italy, 23 - 27 Jun 2008, pp.MOPD014
7.
The First Measurement of Low-loss 9-cell Cavity in a Cryomodule at STF / Saeki, T (KEK, Tsukuba) ; Akemoto, M (KEK, Tsukuba) ; Fukuda, S (KEK, Tsukuba) ; Furuta, F (KEK, Tsukuba) ; Hara, K (KEK, Tsukuba) ; Higashi, Y (KEK, Tsukuba) ; Higo, T (KEK, Tsukuba) ; Hosoyama, K (KEK, Tsukuba) ; Inoue, H (KEK, Tsukuba) ; Kabe, A (KEK, Tsukuba) et al.
2008 - 3 p. External link: Published version from JACoW
In : 11th European Particle Accelerator Conference, Genoa, Italy, 23 - 27 Jun 2008, pp.MOPP029
8.
Performance of KEKB with crab cavities / Funakoshi, Y (KEK, Tsukuba) ; Abe, T (KEK, Tsukuba) ; Akai, K (KEK, Tsukuba) ; Akemoto, M (KEK, Tsukuba) ; Akiyama, A (KEK, Tsukuba) ; Arinaga, M (KEK, Tsukuba) ; Ebihara, K (KEK, Tsukuba) ; Egawa, K (KEK, Tsukuba) ; Enomoto, A (KEK, Tsukuba) ; Flanagan, J (KEK, Tsukuba) et al.
2008 - 5 p. External link: Published version from JACoW
In : 11th European Particle Accelerator Conference, Genoa, Italy, 23 - 27 Jun 2008, pp.WEXG01
9.
The First Cool-down Tests of the 6 Meter-Long-Cryomodules for Superconducting RF Test Facility (STF) at KEK / Ohuchi, N (KEK, Tsukuba) ; Furuta, F (KEK, Tsukuba) ; Hara, K (KEK, Tsukuba) ; Hayano, H (KEK, Tsukuba) ; Higashi, N (KEK, Tsukuba) ; Higashi, Y (KEK, Tsukuba) ; Hisamatsu, H (KEK, Tsukuba) ; Hosoyama, K (KEK, Tsukuba) ; Kako, E (KEK, Tsukuba) ; Kojima, Y (KEK, Tsukuba) et al.
2008 - 3 p. External link: Published version from JACoW
In : 11th European Particle Accelerator Conference, Genoa, Italy, 23 - 27 Jun 2008, pp.MOPP144
10.
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.
- 2007 - 339.
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6 Kojima, Y.
15 Kojima, Yasufumi
1 Kojima, Yuji
7 Kojima, Yuuji
2 Kojima, Yuzo
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