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CEPC Technical Design Report: Accelerator
/ CEPC Study Group Collaboration
The Circular Electron Positron Collider (CEPC) is a large scientific project initiated and hosted by China, fostered through extensive collaboration with international partners. The complex comprises four accelerators: a 30 GeV Linac, a 1.1 GeV Damping Ring, a Booster capable of achieving energies up to 180 GeV, and a Collider operating at varying energy modes (Z, W, H, and ttbar). [...]
arXiv:2312.14363; IHEP-CEPC-DR-2023-01; IHEP-AC-2023-01.-
2024-06-03 - 1106 p.
- Published in : Radiat. Detect. Technol. Methods 8 (2024) 1-1105
Fulltext: 2312.14363 - PDF; Publication - PDF;
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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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Early Commissioning of the Luminosity Dither Feedback for SuperKEKB
/ Masuzawa, Mika (KEK, Tsukuba) ; Bambade, Philip (Orsay, LAL) ; Brown, David (SLAC) ; Di Carlo, Salvatore (Orsay, LAL) ; El Khechen, Dima (CERN) ; Fisher, Alan (SLAC) ; Funakoshi, Yoshihiro (KEK, Tsukuba) ; Jehanno, Didier (Orsay, LAL) ; Kawamoto, Takashi (KEK, Tsukuba) ; Nakamura, Shu (KEK, Tsukuba) et al.
SuperKEKB is an electron–positron double ring collider that aims to achieve a peak luminosity of 8 x 10$^{35}$ cm$^{-2}$ s$^{-1}$ by using what is known as the “nano-beam” scheme. A luminosity dither system is employed for collision orbit feedback in the horizontal plane. [...]
JACoW, 2019 - 4 p.
- Published in : 10.18429/JACoW-IBIC2018-TUPC13
Published fulltext: PDF;
In : 7th International Beam Instrumentation Conference, Shanghai, China, 9 - 13 Sep, 2018, pp.TUPC13
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FCC-ee Operation Model, Availability & Performance
/ Zimmermann, Frank (CERN) ; Apollonio, Andrea (CERN) ; Benedikt, Michael (CERN) ; Brunner, Olivier (CERN) ; Funakoshi, Yoshihiro (KEK, Tsukuba) ; Milardi, Catia (Frascati) ; Myers, Stephen (CERN) ; Niemi, Arto (Tampere U. of Tech.) ; Oide, Katsunobu (KEK, Tsukuba) ; Qin, Qing (Beijing, Inst. High Energy Phys.) et al.
This document discusses the machine parameters and expected luminosity performance for the proposed future circular lepton collider FCC-ee. Particular emphasis is put on availability, physics run time, and efficiency. [...]
JACOW, 2019 - 7 p.
- Published in : 10.18429/JACoW-eeFACT2018-WEPAB03
Fulltext: PDF;
In : 62nd ICFA Advanced Beam Dynamics Workshop on High Luminosity Circular e+e− Colliders, Hong Kong, China, 24 - 27 Sep 2018, pp.WEPAB03
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Early Commissioning of the Luminosity Dither System for SuperKEKB
/ Funakoshi, Yoshihiro (KEK, Tsukuba) ; Bambade, Philip (Orsay, LAL) ; Brown, David (SLAC) ; Di Carlo, Salvatore (Orsay, LAL) ; El Khechen, Dima (CERN) ; Fisher, Alan (SLAC) ; Jehanno, Didier (Orsay, LAL) ; Kawamoto, Takashi (KEK, Tsukuba) ; Masuzawa, Mika (KEK, Tsukuba) ; Nakamura, Shu (KEK, Tsukuba) et al.
SuperKEKB is an electron-positron double ring collider at KEK which aims at a peak luminosity of 8 x 10³⁵ cm⁻²s⁻¹ by using what is known as the ’nano-beam’ scheme. A luminosity dither system is employed for collision orbit feedback in the horizontal plane. [...]
JACOW, 2019 - 5 p.
- Published in : 10.18429/JACoW-eeFACT2018-WEXBA04
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.WEXBA04
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First Measurements of Beam Backgrounds at SuperKEKB
/ Vahsen, S.E. (University of Hawaii) ; Lewis, P.M. (University of Hawaii) ; Jaegle, I. (University of Florida) ; Nakayama, H. (KEK) ; Aloisio, A. (University of Naples Federico II & INFN Napoli) ; Ameli, F. (INFN Roma) ; Barrett, M. (Wayne State University) ; Beaulieu, A. (University of Victoria) ; Bosisio, L. (University of Trieste & INFN) ; Branchini, P. (INFN Roma) et al.
The high design luminosity of the SuperKEKB electron-positron collider is expected to result in challenging levels of beam-induced backgrounds in the interaction region. Properly simulating and mitigating these backgrounds is critical to the success of the Belle~II experiment. [...]
AIDA-2020-PUB-2018-005.-
Geneva : CERN, 2018
- Published in : Nucl. Instrum. Methods Phys. Res., Sect. A
Fulltext: PDF;
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Optics measurements and corrections at the early commissioning of SuperKEKB
/ Ohnishi, Y (KEK, Tsukuba, Kapan) ; Sugimoto, H (KEK, Tsukuba, Kapan) ; Morita, A (KEK, Tsukuba, Kapan) ; Koiso, H (KEK, Tsukuba, Kapan) ; Oide, K (KEK, Tsukuba, Kapan) ; Ohmi, K (KEK, Tsukuba, Kapan) ; Zhou, D (KEK, Tsukuba, Kapan) ; Funakoshi, Y (KEK, Tsukuba, Kapan) ; Carmignani, N (ESRF, Grenoble, France) ; Liuzzo, S M (ESRF, grenoble, France) et al.
We present experimental results of measurements and corrections for the optics at the early Phase-1 commissioning of SuperKEKB. The aim of SuperKEKB is a positron-electron collider built to achieve the target luminosity of 8x10^35 cm^−2s^−1. [...]
CERN-ACC-2017-0039.-
Geneva : CERN, 2017
- Published in : 10.18429/JACoW-IPAC2016-THPOR007
Fulltext: PDF;
In : 7th International Particle Accelerator Conference, Busan, Korea, 8 - 13 May 2016, pp.THPOR007
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