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1.
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The SuperKEKB Has Broken the World Record of the Luminosity
/ Funakoshi, Yoshihiro (KEK, Tsukuba) ; Abe, Tetsuo (KEK, Tsukuba) ; Akai, Kazunori (KEK, Tsukuba) ; Arimoto, Yasushi (KEK, Tsukuba) ; Egawa, Kazumi (KEK, Tsukuba) ; Enomoto, Shun (KEK, Tsukuba) ; Fukuma, Hitoshi (KEK, Tsukuba) ; Furukawa, Kazuro (KEK, Tsukuba) ; Iida, Naoko (KEK, Tsukuba) ; Ikeda, Hitomi (KEK, Tsukuba) et al.
The SuperKEKB broke the world record of the luminosity in June 2020 in the Phase 3 operation. The luminosity has been increasing since then and the present highest luminosity is 4.65 x 10³⁴ cm⁻²s⁻¹ with β_{y}^{*} of 1 mm. [...]
2022 - 5 p.
- Published in : JACoW IPAC 2022 (2022) 1-5
Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.1-5
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2.
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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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3.
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Further Studies on Betatron Sidebands due to Electron Clouds
/ Flanagan, John Walter (KEK, Ibaraki) ; Fukuma, Hitoshi (KEK, Ibaraki) ; Funakoshi, Yoshihiro (KEK, Ibaraki) ; Hiramatsu, Shigenori (KEK, Ibaraki) ; Ieiri, Takao (KEK, Ibaraki) ; Ikeda, Hitomi (KEK, Ibaraki) ; Ohmi, Kazuhito (KEK, Ibaraki) ; Oide, Katsunobu (KEK, Ibaraki) ; Tobiyama, Makoto (KEK, Ibaraki)
2006 - 3 p.
External link: Published version from JACoW
In : 10th European Particle Accelerator Conference, Edinburgh, UK, 26 - 30 Jun 2006, pp.2898
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4.
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Beam Dynamics Measurements in the Vicinity of a Half-integer Resonance
/ Ieiri, Takao (KEK, Ibaraki) ; Flanagan, John Walter (KEK, Ibaraki) ; Fukuma, Hitoshi (KEK, Ibaraki) ; Ikeda, Hitomi (KEK, Ibaraki) ; Ohnishi, Yukiyoshi (KEK, Ibaraki) ; Oide, Katsunobu (KEK, Ibaraki) ; Tobiyama, Makoto (KEK, Ibaraki)
2006 - 3 p.
External link: Published version from JACoW
In : 10th European Particle Accelerator Conference, Edinburgh, UK, 26 - 30 Jun 2006, pp.1902
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5.
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A Diagnostic System for Beam Abort at KEKB
/ Ikeda, Hitomi (KEK, Ibaraki) ; Akai, Kazunori (KEK, Ibaraki) ; Flanagan, John Walter (KEK, Ibaraki) ; Furuya, Takaaki (KEK, Ibaraki) ; Hiramatsu, Shigenori (KEK, Ibaraki) ; Stanic, Samo (Tsukuba University, Ibaraki) ; Suetake, Masaaki (KEK, Ibaraki) ; Suetsugu, Yusuke (KEK, Ibaraki) ; Tobiyama, Makoto (KEK, Ibaraki) ; Tsuboyama, Toru (KEK, Ibaraki)
2006 - 3 p.
External link: Published version from JACoW
In : 10th European Particle Accelerator Conference, Edinburgh, UK, 26 - 30 Jun 2006, pp.1139
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6.
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A Simpler Method for SR Interferometer Calibration
/ Flanagan, John Walter (KEK, Ibaraki) ; Fukuma, Hitoshi (KEK, Ibaraki) ; Hiramatsu, Shigenori (KEK, Ibaraki) ; Ikeda, Hitomi (KEK, Ibaraki) ; Mitsuhashi, Toshiyuki (KEK, Ibaraki)
2006 - 3 p.
External link: Published version from JACoW
In : 10th European Particle Accelerator Conference, Edinburgh, UK, 26 - 30 Jun 2006, pp.1136
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7.
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Simulation Analysis of Head-Tail Motion Caused by Electron Cloud
/ Ohmi, Kazuhito ; Flanagan, John W ; Fukuma, Hitoshi ; Hiramatsu, Shigenori ; Ikeda, Hitomi ; Perevedentsev, Evgueni ; Tobiyama, Makoto
Synchro-beta side band caused by electron cloud instability has been observed at KEK-B factory. The side-band appears between $νβ+νs$ and $νβ+2νs$ above the threshold of beam size blow up and disappear by applying solenoid field. [...]
2005
External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.907
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8.
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Betatron Sidebands Due to Electron Clouds Under Colliding Beam Conditions
/ Flanagan, John W ; Fukuma, Hitoshi ; Funakoshi, Yoshihiro ; Hiramatsu, Shigenori ; Ikeda, Hitomi ; Ohmi, Kazuhito ; Perevedentsev, Evgueni ; Tobiyama, Makoto ; Uehara, Sadaharu ; Uno, Shoji
Recently, we have observed vertical betatron sidebands in the transverse beam spectra of positron bunches at the KEKB LER which are associated with the presence of electron clouds. When the LER is operating in single-beam mode (no colliding bunches in the HER), these sidebands are sharply peaked. [...]
2005
External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.680
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9.
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Recent Experiment Results on Fast Ion Instability at 2.5 GeV PLS
/ Kim Eun San ; Han, Yeung-Jin ; Hukuma, Hitoshi ; Ikeda, Hitomi ; Park, Chong-Do ; Park, Sung-Ju ; Soo Ko In ; Yun Huang Jung
We present recent experiment results on the fast ion instability that were performed at the PLS storage ring. With higher vacuum pressures of three orders of magnitude than nominal one by He gas injection into the ring, increases of a factor of around three in the vertical beam size were observed by interferometer system. [...]
2005
External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.466
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10.
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Vertical Beam Size Measurement by Streak Camera under Colliding and Single Beam Conditions in KEKB
/ Ikeda, Hitomi ; Flanagan, John W ; Fukuma, Hitoshi ; Funakoshi, Yoshihiro ; Hiramatsu, Shigenori ; Mitsuhashi, Toshiyuki ; Ohmi, Kazuhito ; Uehara, Sadaharu
Beam behavior of KEKB was studied by measurement of the beam size using a streak camera. Effect of the electron-cloud and the parasitic collision on the vertical beam size was examined in beam collision. [...]
2005
External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.3194
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