K
Koichiro Hirano
Researcher at Japan Atomic Energy Agency
Publications - 32
Citations - 273
Koichiro Hirano is an academic researcher from Japan Atomic Energy Agency. The author has contributed to research in topics: Beam (structure) & Laser. The author has an hindex of 8, co-authored 31 publications receiving 256 citations. Previous affiliations of Koichiro Hirano include National Institute of Radiological Sciences.
Papers
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Journal Article
試験加速器施設(Accelerator Test Facility)ダンピングリングにおける超低エミッタンスビームの達成
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Improvement of an S-band RF gun with a Cs2Te photocathode for the KEK-ATF
Nobuhiro Terunuma,A. Murata,Masafumi Fukuda,Koichiro Hirano,Yoshio Kamiya,Toshiteru Kii,Masao Kuriki,Ryunosuke Kuroda,Hideaki Ohgaki,Kazuyuki Sakaue,M. Takano,Toshikazu Takatomi,Junji Urakawa,Masakazu Washio,Yoshishige Yamazaki,Jinfeng Yang +15 more
TL;DR: A laser-driven RF gun with a Cs 2 Te photocathode, a device modeled after the BNL-IV RF gun, has been in development at KEK since 2002 as discussed by the authors.
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Upgraded laser wire beam profile monitor
Yosuke Honda,Noboru Sasao,Sakae Araki,Yasuo Higashi,Toshiyuki Okugi,Takashi Taniguchi,Junji Urakawa,Yoshio Yamazaki,Koichiro Hirano,Masahiro Nomura,M. Takano,Hiroshi Sakai +11 more
TL;DR: In this paper, an upgraded version of the laser wire beam profile monitor developed at KEK was used to measure a low-emittance electron beam in the ATF damping ring.
Journal ArticleDOI
High-power test and thermal characteristics of a new radio-frequency quadrupole cavity for the Japan Proton Accelerator Research Complex linac
Yasuhiro Kondo,Takatoshi Morishita,Kazuo Hasegawa,E. Chishiro,Koichiro Hirano,Toshihiko Hori,Hidetomo Oguri,Fumiaki Sato,Shinichi Shinozaki,Takashi Sugimura,Hiroshi Kawamata,Fujio Naito,Yuji Fukui,Kenta Futatsukawa,Kesao Nanmo +14 more
TL;DR: In this paper, a high-power test of a new radio-frequency quadrupole (RFQ II) for the J-PARC linac was performed, and the frequency response was measured and compared to finite-element method simulation results, confirming that the simple twodimensional model reproduces the experimental data well.
Journal ArticleDOI
Beam loading compensation for acceleration of multi-bunch electron beam train
Shengguang Liu,Masafumi Fukuda,Sakae Araki,Nobuhiro Terunuma,Junji Urakawa,Koichiro Hirano,Noboru Sasao +6 more
TL;DR: In this paper, the authors calculate the transient beam loading voltage and energy gain from the RF field in the gun and accelerating tube for a multi-bunch train for K-edge digital subtraction angiography, based on Compton scattering.