Michiru Nishiwaki

Profile Information

Affiliation: Associate Professor, Accelerator Laboratory, High Energy Accelerator Research Organization

Degree: 博士（工学）(Sep, 2006, 総合研究大学院大学)

ORCID iD: https://orcid.org/0000-0002-6804-059X
J-GLOBAL ID: 201301067073537647
researchmap Member ID: B000229702

External link: http://kaken.nii.ac.jp/d/r/70555614.ja.html

Research Interests

Research Areas

Research History

Apr, 2019 - Present

Accelerator Laboratory, High Energy Accelerator Research Organization
Apr, 2017 - Mar, 2019

Accelerator Laboratory, High Energy Accelerator Research Organization
Apr, 2011 - Mar, 2017

Accelerator Laboratory, High Energy Accelerator Research Organization
Apr, 2009 - Mar, 2011

Accelerator Laboratory, High Energy Accelerator Research Organization
Jul, 2007 - Mar, 2009

Accelerator Laboratory, High Energy Accelerator Research Organization

Education

Apr, 1999 - Mar, 2002

The Graduate University for Advanced Studies
Apr, 1993 - Mar, 1997

Department of Physics, Faculty of Science, Niigata University

Papers

Loading Test of Hom Dampers for Superconducting Cavities for High Current at Superkekb

T. Okada, K. Akai, T. Furuya, S. Mitsunobu, Y. Morita, M. Nishiwaki

Proceedings of SRF2023, 271-274, Jul, 2023 Corresponding author
Operating Experience of SRF System at High Beam Current in SuperKEKB

M. Nishiwaki, K. Akai, T. Furuya, S. Mitsunobu, Y. Morita, T. Okada

Proceedings of SRF2023, 38-42, Jul, 2023 InvitedLead authorCorresponding author
Optimization of RF phase and beam loading distribution among RF stations in SuperKEKB

Shunto Ogasawara, Kazunori Akai, Tetsuya Kobayashi, Kota Nakanishi, Michiru Nishiwaki

Oct, 2022
SuperKEKB Operating Experience of RF System at High Current

M. Nishiwaki, T. Abe, K. Akai, S. Enomoto, T. Furuya, A. Kabe, T. Kageyama, T. Kobayashi, K. Marutsuka, S. Mitsunobu …

Proceedings of the 65th ICFA Advanced Beam Dynamics Workshop on High Luminosity Circular e+e- Colliders 2022, 131-140, Sep, 2022 Lead author
The SuperKEKB Has Broken the World Record of the Luminosity

Y. Funakoshi, T. Abe, K. Akai, Y. Arimoto, K. Egawa, S. Enomoto, H. Fukuma, K. Furukawa, N. Iida, H. Ikeda …

Proceedings of IPAC’22, 1-5, Jul, 2022
CALIBRATION OF SRF CAVITY VOLTAGE BY MEASUREMENT OF SYNCHROTRON FREQUENCY IN SuperKEKB

M. Nishiwaki, K. Akai, T. Furuya, T. Kobayashi, S. Mitsunobu, Y. Morita, T. Okada

Proc of SRF2021, 376-381, Oct, 2021 Lead author
SuperKEKB operation using crab waist collision scheme

Y. Ohnishi, T. Abe, K. Akai, Y. Arimoto, K. Egawa, S. Enomoto, H. Fukuma, Y. Funakoshi, K. Furukawa, N. Iida …

European Physical Journal Plus, 136(10), Oct 1, 2021
SRF SYSTEMS FOR KEKB AND SuperKEKB

K. Nakanishi, T. Kobayashi, M. Nishiwaki, K.Hirosawa

Proc. eeFACT, Sep 1, 2018
LLRF CONTOL AND MASTER OSCILLATOR SYSTEM FOR DAMPING RING AT SuperKEKB

T. Kobayashi, K. Akai, A. Kabe, K. Nakanishi, M. Nishiwaki, J.-I. Odagiri, H. Deguchi, K. Hayashi, J. Mizuno, K. Hirosawa

Proc. IPAC2018, 2137-2139, Apr 1, 2018
NEW RF FEEDBACK SYSTEM AND SIMULATIONS FOR SUPPRESSION OF COUPLED-BUNCH INSTABILITIES AT SuperKEKB

K. Hirosawa, K. Akai, E. Ezura, T. Kobayashi, K. Nakanishi, M. Nishiwaki, S.I. Yoshimoto

Proc. IBIC2017, Aug 1, 2017
OPERATION OF LLRF CONTROL SYSTEMS IN SuperKEKB PHASE-1 COMMISSIONING

T. Kobayashi, K. Akai, K. Ebihara, A. Kabe, K. Nakanishi, M. Nishiwaki, J.-I. Odagiri, S.I. Yoshimoto, K. Hirosawa

Proc. IPAC2017, 3986-3988, May 1, 2017
DEVELOPMENT OF A LONGITUDINAL FEEDBACK SYSTEM FOR COUPLED BUNCH INSTABILITIES CAUSED BY THE ACCELERATING MODE AT SuperKEKB

K. Hirosawa, K. Akai, E. Ezura, T. Kobayashi, K. Nakanishi, M. Nishiwaki, S.I. Yoshimoto

Proc. IPAC2017, May 1, 2017
COMMISSIONING OF THE PHASE-1 SuperKEKB B-FACTORY AND UPDATE ON THE OVERALL STATUS

Y. Ohnishi, T. Abe, T. Adachi, K. Akai, Y. Arimoto, K. Egawa, Y. Enomoto, J.W. Flanagan, H. Fukuma, Y. Funakoshi …

Proc. NAPAC2016, Oct 1, 2016
BEAM COMMISSIONING OF SuperKEKB

Y. Funakoshi, T. Abe, T. Adachi, K. Akai, Y. Arimoto, K. Egawa, Y. Enomoto, J.W. Flanagan, H. Fukuma, K. Furukawa …

Proc. IPAC2016, 1019-1021, May 1, 2016
Developments of Horizontal High Pressure Rinsing for SuperKEKB SRF Cavities

Y. Morita, K. Akai, T. Furuya, A. Kabe, S. Mitsunobu, M. Nishiwaki

Proceedings of SRF2015, 443-447, Sep, 2015
Developments of SiC Damper for SuperKEKB Superconducting Cavity

M. Nishiwaki, K. Akai, T. Furuya, A. Kabe, S. Mitsunobu, Y. Morita

Proceedings of SRF2015, 1289-1292, Sep, 2015 Lead author
The Development of Cavity Frequency Tracking Type RF Control System for SRF-TEM

N. Higashi, A. Enomoto, Y. Funahashi, T. Furuya, X.J. Jin, Y. Kamiya, S. Michizono, M. Nishiwaki, H. Sakai, M. Sawabe …

Proceedings of IPAC’15, 2914-2916, 2015
Progress of SuperKEKB

T. Miura, T. Abe, T. Adachi, K. Akai, M. Akemoto, A. Akiyama, D.A. Arakawa, Y. Arakida, Y. Arimoto, M. Arinaga …

Proceedings of IPAC’15, 1291-1295, 2015
Status of LLRF Control System for SuperKEKB Commissioning

Kobayashi, Tetsuya, Akai, Kazunori, Deguchi, Hisakuni, Ebihara, Kiyokazu, Hayashi, Kazutaka, Iwaki, Takashi, Kabe, Atsushi, Nakanishi, Kota, Nishiwaki, Michiru, Odagiri, Jun-Ichi …

Proceedings of the 6th Int. Particle Accelerator Conf., IPAC2015, 2015
Development and construction status of new LLRF control system for SuperKEKB

T. Kobayashi, K. Akai, K. Ebihara, A. Kabe, K. Nakanishi, M. Nishiwaki, J. Odagiri, H. Deguchi, K. Hayashi, T. Iwaki …

IPAC 2014: Proceedings of the 5th International Particle Accelerator Conference, 2444-2446, Jul 1, 2014 Peer-reviewed

Misc.

Development of high-speed beam loss monitor system with optical fiber in SuperKEKB

Shunto Ogasawara, Hitomi Ikeda, Tetsuya Kobayashi, Michiru Nishiwaki

489, 2023
Reconsideration on optimum tuning of ARES cavity for high current beam storage

Tetsuya Kobayashi, Tetsuo Abe, Shun Enomoto, Shunto Ogasawara, Takafumi Okada, Michiru Nishiwaki, Takaaki Yamaguchi

914, 2023
Development of new LLRF control system for superconducting cavity in SuperKEKB

Tetsuya Kobayashi, Kazunori Akai, Takafumi Okada, Shunto Ogasawara, Atsushi Kabe, Kota Nakanishi, Michiru Nishiwaki, Takashi Iwaki, Kazutaka Hayashi, Toyoki Harigae …

19th 657, 2022
Adjustment of RF phase and beam loading distribution among RF stations in SuperKEKB

Shunto Ogasawara, Kazunori Akai, Tetsuya Kobayashi, Kota Nakanishi, Michiru Nishiwaki

19th 440, 2022
Status of SiC HOM absorbers for superconducting cavities at SuperKEKB

Takafumi Okada, Kazunori Akai, Michiru Nishiwaki, Takaaki Furuya, Shinji Mitsunobu, Yoshiyuki Morita

Proceedings of the 19th Annual Meeting of Particle Accelerator Society of Japan, 19th 373-378, 2022
CAVITY VOLTAGE CONTROL LOOP PHASE COMPENSATION FOR WAVEGUIDE TEMPERATURE CHANGE IN SuperKEKB LLRF CONTROL

Shunto Ogasawara, Kazunori Akai, Tetsuya Kobayashi, Kota Nakanishi, Michiru Nishiwaki, Ken Watanabe

日本加速器学会年会(Web), 18th 728-732, 2021
OPERATION STATUS OF LLRF CONTROL SYSTEM IN SuperKEKB

小林鉄也, 赤井和憲, 小笠原舜斗, 可部農志, 中西功太, 西脇みちる, 吉本伸一, 渡邉謙

日本加速器学会年会(Web), 18th, 2021
VERIFICATION OF RF FEEDBACK TO SUPPRESS LONGITUDINAL INSTABILITY DUE TO BEAM LOADING IN SUPERKEKB

赤井和憲, 可部農志, 小林鉄也, 中西功太, 西脇みちる

日本加速器学会年会(Web), 17th, 2020
PHASE ADJUSTMENT BETWEEN CAVITIES WITH BEAM LOADING DISPARITY IN HIGH POWER RF DISTRIBUTION SYSTEM AT SuperKEKB

小林鉄也, 赤井和憲, 阿部哲郎, 榎本瞬, 中西功太, 西脇みちる, 渡邉謙

日本加速器学会年会(Web), 17th, 2020
Calibration of superconducting cavity voltage by measuring synchrotron frequency

Michiru Nishiwaki, Kazunori Akai, Tetsuya Kobayashi, Takaaki Furuya, Shinji Mitsunobu, Yoshiyuki Morita

16th 723, 2019
Status of superconducting accelerating cavity at SuperKEKB phase-2 operation

15th 428, 2018
I/Qフィードバック制御における大電流ビーム負荷での空洞離調に対する位相補償機能

小林鉄也, 赤井和憲, 中西功太, 西脇みちる, 林和孝, 水野隼一, 廣澤航輝

日本加速器学会年会プロシーディングス, 15th, 2018
Operation status of superconducting accelerating cavity and development of SiC damper for SuperKEKB

14th 914, 2017
SuperKEKBにおける加速モード結合バンチ不安定性のダンパー特性評価と抑制シミュレーション

廣澤航輝, 赤井和憲, 絵面栄二, 小林鉄也, 中西功太, 西脇みちる, 吉本伸一

日本加速器学会年会プロシーディングス, 14th, 2017
SuperKEKBダンピングリングにおけるLLRF制御システム

小林鉄也, 赤井和憲, 海老原清一, 小田切淳一, 可部農志, 出口久城, 中西功太, 西脇みちる, 林和孝, 水野隼一

日本加速器学会年会プロシーディングス, 14th, 2017
SUPERKEKB PHASE1 (INJECTOR+RING) STATUS REPORT

紙谷琢哉, 赤井和憲, 秋山篤美, 明本光生, 安達利一, 阿部哲郎, 荒川大, 荒木田是夫, 有永三洋, 有本靖 …

KEK Preprint (Web), (2016-42), 2016
SuperKEKBフェーズ1における入射器とリングの現状

紙谷琢哉, 赤井和憲, 秋山篤美, 明本光生, 安達利一, 阿部哲郎, 荒川大, 荒木田是夫, 有永三洋, 有本靖 …

日本加速器学会年会(Web), 13th, 2016
SuperKEKBのフェーズ1のビームコミッショニング

船越義裕, 阿部哲郎, 安達利一, 赤井和憲, 有本靖, 植木竜一, 江川一美, EL KHECHEN Dima, 榎本嘉範, FLANAGAN John …

日本加速器学会年会(Web), 13th, 2016
SuperKEKBビームコミッショニングにおけるLLRF制御システムの稼働状況

小林鉄也, 赤井和憲, 海老原清一, 小田切淳一, 可部農志, 中西功太, 西脇みちる, 吉本伸一

日本加速器学会年会(Web), 13th, 2016
SuperKEKBビームコミッショニングに向けたLLRF制御システムの状況と予備試験

小林鉄也, 赤井和憲, 岩城孝志, 海老原清一, 小田切淳一, 可部農志, 出口久城, 中西功太, 西脇みちる, 林和孝 …

日本加速器学会年会(Web), 12th, 2015

Books and Other Publications

KEK Annual report 2012, Vol. 3

Maki Akihiro, Fujimoto Junpei, Iwano Kaoru, Kawasaki Masato, Kikutani Eiji, Matsufuru Hideo, Nishiwaki Michiru, Sakamura Yutaka, Tajima, Osamu, Tomizawa Masahito (Role: Joint editor)

High Energy Accelerator Research Organization, KEK, 2013
KEK Annual report 2012, Vol. 2

Maki Akihiro, Fujimoto Junpei, Iwano Kaoru, Kawasaki Masato, Kikutani Eiji, Matsufuru Hideo, Nishiwaki Michiru, Sakamura Yutaka, Tajima, Osamu, Tomizawa Masahito (Role: Joint editor)

High Energy Accelerator Research Organization, KEK, 2013
KEK Annual report 2012, Vol. 1

Maki Akihiro, Fujimoto Junpei, Iwano Kaoru, Kawasaki Masato, Kikutani Eiji, Matsufuru Hideo, Nishiwaki Michiru, Sakamura Yutaka, Tajima, Osamu, Tomizawa Masahito (Role: Joint editor)

High Energy Accelerator Research Organization, KEK, 2013
KEK Annual report 2011, Vol. 3

Maki Akihiro, BESSHO Kotaro, IWANO Kaoru, KAWASAKI Masato, KIKUTANI Eiji, KOHRI Kazunori, MORITA Youhei, NAKAGAWA Hidetoshi, NISHIWAKI Michiru, TAJIMA Osamu (Role: Joint editor)

High Energy Accelerator Research Organization, KEK, 2012
KEK Annual report 2011, Vol. 2

Maki Akihiro, BESSHO Kotaro, IWANO Kaoru, KAWASAKI Masato, KIKUTANI Eiji, KOHRI Kazunori, MORITA Youhei, NAKAGAWA Hidetoshi, NISHIWAKI Michiru, TAJIMA Osamu (Role: Joint editor)

High Energy Accelerator Research Organization, KEK, 2012
KEK Annual report 2011, Vol. 1

Maki Akihiro, BESSHO Kotaro, IWANO Kaoru, KAWASAKI Masato, KIKUTANI Eiji, KOHRI Kazunori, MORITA Youhei, NAKAGAWA Hidetoshi, NISHIWAKI Michiru, TAJIMA Osamu (Role: Joint editor)

High Energy Accelerator Research Organization, KEK, 2012

Presentations

史上最高の衝突性能に挑む！SuperKEKB/BelleII検出器

西脇みちる

大学共同利用機関シンポジウム2019, Oct 20, 2019

Professional Memberships

Research Projects

Fundamental Research of a superconducting RF cavity for an energy recovery linac

Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), Japan Society for the Promotion of Science, 2008 - 2010

FURUYA Takaaki, UMEMORI Kensei, TOBIYAMA Makoto, OZAKI Toshiyuki, SAKAI Hiroshi, NISHIWAKI Michiru, TAKAHASHI Takeshi, SAWAMURA Masaru

Social Activities

宇宙の謎を探るSuperKEKB加速器ー世界最高性能を目指すー

Lecturer

中央区, 中央区民カレッジまなびのコース（連携講座）総研大講師陣による科学探求講座, 築地社会教育会館, Nov 6, 2021 - Nov 6, 2021
宇宙の謎を探るSuperKEKB加速器ー世界最高性能を目指すー

Lecturer

渋谷区, 渋谷区ハチコウ大学ビデオ講座, Oct 27, 2020 - Nov 14, 2020
宇宙の謎を探るSuperKEKB加速器ー世界最高性能を目指すー

Lecturer

北区, 北区区民大学「宇宙をもっと身近に～科学者と”宇宙”を探求しよう！」, 北とぴあ飛鳥ホール, Oct 10, 2020

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