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1.
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A Neural Network approach to reconstructing SuperKEKB beam parameters from beamstrahlung
/ Di Carlo, S. (CERN) ; Bonvicini, G. (Wayne State U.) ; Althubiti, N.A. (Al Jouf U.) ; Ayad, R. (U. Tabuk) ; De La Cruz-Burelo, E. (CINVESTAV, IPN) ; Domínguez, I. (Sinaloa U.) ; Bashir, B.O. El (U. Tabuk) ; Farhat, H. (Wayne State U.) ; Flanagan, J. (KEK, Tsukuba) ; Gillard, R. (Wayne State U.) et al.
This work shows how it is possible to reconstruct SuperKEKB's beam parameters using a Neural Network with beamstrahlung signal from the Large Angle Beamstrahlung Monitor (LABM) as input. We describe the device, the model, and discuss the results..
arXiv:2206.11709.-
2022-11-01 - 22 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 1042 (2022) 167453
Fulltext: PDF;
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2.
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Electron cloud effects in SuperKEKB commissioning
/ Ohmi, K (KEK, Tsukuba ; Sokendai, Tsukuba) ; Flanagan, J (KEK, Tsukuba ; Sokendai, Tsukuba) ; Fukuma, H (KEK, Tsukuba ; Sokendai, Tsukuba) ; Ikeda, H (KEK, Tsukuba ; Sokendai, Tsukuba) ; Mulyani, E (KEK, Tsukuba ; Sokendai, Tsukuba) ; Shibata, K (KEK, Tsukuba ; Sokendai, Tsukuba) ; Suetsugu, Y (KEK, Tsukuba ; Sokendai, Tsukuba) ; Tobiyama, M (KEK, Tsukuba ; Sokendai, Tsukuba)
A vertical emittance growth (beam size blow-up) due to electron cloud has been observed in the positron low energy ring (LER) in Phase-I commissioning (2016) of SuperKEKB. The emittance growth is caused by fast head-tail instability due to wake force induced by electron cloud. [...]
2020 - 4 p.
Fulltext from publisher: PDF;
In : ECLOUD’18: Proceedings of the Joint INFN-CERN-ARIES Workshop on Electron-Cloud Effects, La Biodola, Isola d'Elba, Italy, 3 - 7 Jun 2018, pp.179-182 (CERN-2020-007)
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3.
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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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4.
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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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5.
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Planning the Future of U.S. Particle Physics (Snowmass 2013): Chapter 6: Accelerator Capabilities
/ Barletta, W.A. (MIT, LNS) ; Bai, M. (Brookhaven) ; Battaglia, M. (UC, Berkeley) ; Bruning, O. (CERN) ; Byrd, J. (LBL, Berkeley) ; Ent, R. (Tohoku U. ; Jefferson Lab) ; Flanagan, J. (Sokendai, Tsukuba ; KEK, Tsukuba) ; Gai, W. (Argonne) ; Galambos, J. (ORNL, Oak Ridge (main) ; SNS Project, Oak Ridge) ; Hoffstaetter, G. (Cornell U., Phys. Dept. ; Cornell U., CLASSE) et al.
This report is organized as a collection of the executive summaries of each of the six working groups: Energy Frontier proton colliders, Energy Frontier lepton colliders, Intensity Frontier proton sources, Intensity Frontier electron accelerators, electron-ion colliders, and accelerator research and test-beam facilities..
arXiv:1401.6114 ; FERMILAB-CONF-14-019-CH06 ; SLAC-PUB-15978.
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2014. - 26 p.
Fulltext - Proceedings write-up on ECONF - PDF on ECONF - Full text
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6.
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Observations and predictions at CesrTA, and outlook for ILC
/ Dugan, G. (Cornell U., CLASSE) ; Billing, M. (Cornell U., CLASSE) ; Butler, K. (Cornell U., CLASSE) ; Chu, J. (Cornell U., CLASSE) ; Crittenden, J. (Cornell U., CLASSE) ; Forster, M. (Cornell U., CLASSE) ; Kreinick, D. (Cornell U., CLASSE) ; Meller, R. (Cornell U., CLASSE) ; Palmer, M. (Cornell U., CLASSE) ; Ramirez, G. (Cornell U., CLASSE) et al.
In this paper, we will describe some of the recent experimental measurements [1, 2, 3] performed at CESRTA [4], and the supporting simulations, which probe the interaction of the electron cloud with the stored beam. These experiments have been done over a wide range of beam energies, emittances, bunch currents, and fill patterns, to gather sufficient information to be able to fully characterize the beam-electron-cloud interaction and validate the simulation programs. [...]
arXiv:1310.0261.-
Geneva : CERN, 2013 - 11 p.
Fulltext: PDF; Published version from CERN: PDF; External link: Preprint
In : ECLOUD’12: Joint INFN-CERN-EuCARD-AccNet Workshop on Electron-Cloud Effects, pp.31-41
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7.
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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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8.
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Electron Cloud at Low Emittance in CesrTA
/ Palmer, Mark (Cornell U., CLASSE) ; Alexander, James (Cornell U., CLASSE) ; Billing, Michael (Cornell U., CLASSE) ; Calvey, Joseph (Cornell U., CLASSE) ; Conolly, Christopher (Cornell U., CLASSE) ; Crittenden, James (Cornell U., CLASSE) ; Dobbins, John (Cornell U., CLASSE) ; Dugan, Gerald (Cornell U., CLASSE) ; Eggert, Nicholas (Cornell U., CLASSE) ; Fontes, Ernest (Cornell U., CLASSE) et al.
The Cornell Electron Storage Ring (CESR) has been reconfigured as a test accelerator (CesrTA) for a program of electron cloud (EC) research at ultra low emittance. The instrumentation in the ring has been upgraded with local diagnostics for measurement of cloud density and with improved beam diagnostics for the characterization of both the low emittance performance and the beam dynamics of high intensity bunch trains interacting with the cloud [...]
2010
External link: Published version from JACoW
In : 1st International Particle Accelerator Conference, Kyoto, Japan, 23 - 28 May 2010, pp.TUYMH02
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9.
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Belle II Technical Design Report
/ Abe, T ; Adachi, I ; Adamczyk, K ; Ahn, S ; Aihara, H ; Akai, K ; Aloi, M ; Andricek, L ; Aoki, K ; Arai, Y et al.
The Belle detector at the KEKB electron-positron collider has collected almost 1 billion Y(4S) events in its decade of operation. [...]
arXiv:1011.0352 ; KEK REPORT 2010-1.
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2010.
Preprint
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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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