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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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Overall Injection Strategy for FCC-ee
/ Ogur, Salim (CERN) ; Aiba, Masamitsu (PSI, Villigen) ; Antoniou, Fanouria (CERN) ; Barnyakov, Alexey (Novosibirsk, IYF) ; Chaikovska, Iryna (Orsay, LAL) ; Charles, Tessa (CERN) ; Chehab, Robert (Orsay, LAL) ; Etisken, Ozgur (Ankara U.) ; Furukawa, Kazuro (KEK, Tsukuba) ; Härer, Bastian (CERN) et al.
The Future Circular electron-positron Collider (FCC-ee) requires fast cycling injectors with very low extraction emittances to provide and maintain extreme luminosities at center of mass energy varying between 91.2-385 GeV in the collider. For this reason, the whole injector complex table is prepared by putting into consideration the minimum fill time from scratch, bootstrapping, transmission efficiency as well as store time of the beams in synchrotrons to approach equilibrium emittances. [...]
JACOW, 2019 - 8 p.
- Published in : 10.18429/JACoW-eeFACT2018-TUPAB03
Published fulltext: PDF;
In : 62nd ICFA Advanced Beam Dynamics Workshop on High Luminosity Circular e+e− Colliders, Hong Kong, China, 24 - 27 Sep 2018, pp.TUPAB03
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3.
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Linac and damping ring designs for the FCC-ee
/ Ogur, Salim (CERN ; Bogazici U.) ; Barnyakov, Alexey (Novosibirsk, IYF) ; Chaikovska, Iryna (Orsay, LAL) ; Chehab, Robert (Orsay, LAL) ; Furukawa, Kazuro (KEK, Tsukuba) ; Iida, Naoko (KEK, Tsukuba) ; Kamitani, Takuya (KEK, Tsukuba) ; Levichev, Alexey (Novosibirsk, IYF) ; Martyshkin, Pavel (Novosibirsk, IYF) ; Miyahara, Fusashi (KEK, Tsukuba) et al.
We report the design of the pre-injector chain for the Future Circular e$^+$e$^−$ Collider (FCC-ee) system. The electron beam from a low-emittance RF gun is accelerated by an S-band linac up to 6 GeV. [...]
CERN-ACC-2019-073.-
2019 - 4 p.
- Published in : 10.18429/JACoW-IPAC2019-MOPMP002
Fulltext from publisher: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.MOPMP002
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4.
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Beam-based alignment of the SuperKEKB linac quadrupoles
/ Ogur, S (Bogazici U. ; CERN) ; Iida, N (KEK, Tsukuba) ; Kamitani, T (KEK, Tsukuba) ; Oide, K (CERN ; KEK, Tsukuba) ; Zimmermann, F (CERN)
The positron linac of SuperKEKB contains accelerating structures surrounded by quadrupoles without nearby beam-position-monitors (BPMs) or steering magnets. In this situation, standard techniques for beam steering or beam-based-alignment are not efficient. [...]
2019 - 13 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 925 (2019) 199-211
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5.
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Layout and Performance of the FCC-ee Pre-Injector Chain
/ Ogur, Salim (CERN ; Bogazici U.) ; Charles, Tessa (CERN ; Melbourne U.) ; Oide, Katsunobu (CERN ; KEK, Tsukuba) ; Barnyakov, Alexey (Novosibirsk, IYF) ; Chaikovska, Iryna (Orsay, LAL) ; Rinolfi, Louis (CERN) ; Chehab, Robert (Orsay, LAL) ; Furukawa, Kazuro (KEK, Tsukuba) ; Iida, Naoko (KEK, Tsukuba) ; Kamitani, Takuya (KEK, Tsukuba) et al.
The Future Circular e + e − Collider pre-injector chain consists of a 6 GeV S-Band linac, a damping ring at 1.54 GeV and pre-booster ring to reach 20 GeV for injection to the main booster. The electron and positron beams use the same accelerator chain alternatively. [...]
CERN-ACC-2018-093.-
2018 - 8 p.
- Published in : (2018) , pp. MOPMF034
- Published in : J. Phys.: Conf. Ser. 1067 (2018) 022011
Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.MOPMF034
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6.
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Towards a Preliminary FCC-ee Injector Design
/ Ogur, Salim (CERN ; Bogazici U.) ; Barnyakov, Alexey (Novosibirsk, IYF) ; Furukawa, Kazuro (KEK, Tsukuba) ; Iida, Naoko (KEK, Tsukuba) ; Levichev, Alexey (Novosibirsk, IYF) ; Miyahara, Fusashi (KEK, Tsukuba) ; Nikiforov, Danila (Novosibirsk, IYF) ; Oide, Katsunobu (KEK, Tsukuba) ; Papaphilippou, Yannis (CERN) ; Zimmermann, Frank (CERN)
The Future Circular Collider-ee aims to get high luminosity which mainly relies upon high charge and low geometric emittance in the collider. The FCC-ee is a future project of CERN to operate as Z, W, H and tt factories with varying energies between 45.6 to 175 GeV. [...]
2017 - 4 p.
- Published in : 10.18429/JACoW-eeFACT2016-TUT2H5
Fulltext: PDF;
In : 58th ICFA Advanced Beam Dynamics Workshop on High Luminosity Circular e+e-Colliders, Daresbury, United Kingdom, 24 - 27 Oct 2016, pp.TUT2H5
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7.
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Preliminary design of FCC-ee pre-injector complex
/ Ogur, S (Bogazici U. ; CERN) ; Barnyakov, A (Novosibirsk, IYF) ; Furukawa, K (KEK, Tsukuba) ; Iida, N (KEK, Tsukuba) ; Levichev, A (Novosibirsk, IYF) ; Miyahara, F (KEK, Tsukuba) ; Nikiforov, D (Novosibirsk, IYF) ; Oide, K (KEK, Tsukuba) ; Papaphilippou, Y (CERN) ; Zimmermann, F (CERN)
The design of a 100 km circular $e^+ e^−$ collider with extremely high luminosity is an important component of the global Future Circular Collider (FCC) study hosted by CERN. FCC-ee is being designed to serve as Z, W, H and top factory, covering beam energies from 45.6 to 175 GeV. [...]
IPAC-2017-TUPAB014; CERN-ACC-2017-308.-
2017 - 7 p.
- Published in : J. Phys.: Conf. Ser. 874 (2017) 012003
- Published in : (2017) , pp. TUPAB014
Fulltext: PDF;
In : 8th International Particle Accelerator Conference, Copenhagen, Denmark, 14 - 19 May 2017, pp.TUPAB014
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8.
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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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9.
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Study of vertical beam blowup in KEKB low energy ring
/ Fukuma, H (KEK, Tsukuba) ; Akai, K (KEK, Tsukuba) ; Akasaka, N (KEK, Tsukuba) ; Enomoto, A (KEK, Tsukuba) ; Flanagan, J W (KEK, Tsukuba) ; Funakoshi, Y (KEK, Tsukuba) ; Furukawa, K (KEK, Tsukuba) ; Hiramatsu, S (KEK, Tsukuba) ; Hosoyama, K (KEK, Tsukuba) ; Ieiri, T (KEK, Tsukuba) et al.
2001
Published version: PDF;
In : 18th International Conference on High-energy Accelerators, Tsukuba, Japan, 26 - 30 Mar 2001, pp.P1hlf10
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10.
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Study of Beam-beam Issue for KEKB Crab Crossing
/ Ohmi, Kazuhito (KEK, Tsukuba) ; Flanagan, J W (KEK, Tsukuba) ; Funakoshi, Y (KEK, Tsukuba) ; Iida, N (KEK, Tsukuba) ; Koiso, H (KEK, Tsukuba) ; Morita, A (KEK, Tsukuba) ; Ohnishi, Y (KEK, Tsukuba) ; Oide, Katsunobu (KEK, Tsukuba) ; Seimiya, Y (KEK, Tsukuba)
2008 - 3 p.
External link: Published version from JACoW
In : 11th European Particle Accelerator Conference, Genoa, Italy, 23 - 27 Jun 2008, pp.WEPP035
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