Study of the physics of the extraction and optics of the negative ion beam in a negative ion source

• Project/Area Number: 26400533
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Plasma science
• Research Institution: Naruto University of Education
• Principal Investigator: KENJI MIYAMOTO 鳴門教育大学, 大学院学校教育研究科, 准教授 (00532996)
• Co-Investigator(Renkei-kenkyūsha): HATAYAMA Akiyoshi 慶応義塾大学, 理工学部, 教授 (10245607)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000); Fiscal Year 2016: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2015: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
• Keywords: プラズマ / 核融合 / 負イオン源 / 加速器 / シミュレーション / イオンビーム光学 / PIC法

Outline of Final Research Achievements

The physics of the extraction and optics of the negative ion beam, especially the beam halo formation was studied by using the 3D PIC (particle in cell) simulation combined with a Monte Carlo calculation.
It is shown that the beam halo consists of the negative ions extracted from the periphery of the plasma meniscus. Since the curvature of the equipotential surface is large in the periphery of the plasma meniscus, these negative ions are over-focused and then divergent.

Research Products

• [Journal Article] Study of energy relaxation processes of the surface produced negative ions by using the 3D3V PIC simulation (2017)
  • Author(s): K. Miyamoto, I. Goto, S. Nishioka, A. Hatayama , J. Hiratsuka, M. Hanada, and A. Kojima
  • Journal Title: AIP Conf. Proc. Volume: 印刷中
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Analysis of the beam halo in negative ion sources by using 3D3V PIC code (2016)
  • Author(s): K. Miyamoto, S. Nishioka, I. Goto, A. Hatayama, M. Hanada, A. Kojima, J. Hiratsuka
  • Journal Title: Rev. Sci. Instrum. Volume: 87 Issue: 2 Pages: 1-3
  • DOI: 10.1063/1.4932390
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Effect of Coulomb collision on the negative ion extraction mechanism in negative ion sources (2016)
  • Author(s): I. Goto, K. Miyamoto, S. Nishioka, S. Mattei, J. Lettry, S. Abe, and A. Hatayama
  • Journal Title: Rev. Sci. Instrum. Volume: 87 Issue: 2 Pages: 1-3
  • DOI: 10.1063/1.4934206
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Measurement of heat load density profile on acceleration grid in MeV-class negative ion accelerator (2016)
  • Author(s): Junichi Hiratsuka, Masaya Hanada, Atsushi Kojima, Naotaka Umeda, Mieko Kashiwagi, Kenji Miyamoto, Masafumi Yoshida, Ryo Nishikiori, Masahiro Ichikawa, Kazuhiro Watanabe and Hiroyuki Tobari
  • Journal Title: Rev. Sci. Instrum. Volume: 87 Issue: 2 Pages: 1-3
  • DOI: 10.1063/1.4935636
  • Peer Reviewed
• [Journal Article] Study of ion-ion plasma formation in negative ion sources by a three-dimensional in real space and three-dimensional in velocity space particle in cell model (2016)
  • Author(s): S. Nishioka, I. Goto, K. Miyamoto, A. Hatayama, and A. Fukano
  • Journal Title: J. Appl. Phys. Volume: 119 Issue: 2 Pages: 1-7
  • DOI: 10.1063/1.4939467
  • Peer Reviewed
• [Journal Article] Study of negative hydrogen ion beam optics using the 3D3V PIC model (2015)
  • Author(s): K. Miyamoto, S. Nishioka, I. Goto, A. Hatayama, M. Hanada, and A. Kojima
  • Journal Title: AIP Conference Proceedings Volume: 1655 Pages: 1-9
  • DOI: 10.1063/1.4916461
  • Peer Reviewed / Open Access
• [Journal Article] Study of plasma meniscus formation and beam halo in negative ion source using the 3D3VPIC model (2015)
  • Author(s): S. Nishioka, K. Miyamoto, I. Goto, A. Hatayama, and A. Fukano
  • Journal Title: AIP Conference Proceedings Volume: 1655 Pages: 1-7
  • DOI: 10.1063/1.4916421
  • Peer Reviewed / Open Access
• [Journal Article] Study of the negative ion extraction mechanism from a double-ion plasma in negative ion sources (2015)
  • Author(s): I. Goto, K. Miyamoto, S. Nishioka, and A. Hatayama
  • Journal Title: AIP Conference Proceedings Volume: 1655 Pages: 020011-020011
  • DOI: 10.1063/1.4916420
  • Peer Reviewed / Open Access
• [Presentation] tudy of energy relaxation processes of the surface produced negative ions by using the 3D3V PIC simulation (2016)
  • Author(s): K. Miyamoto, I. Goto, S. Nishioka, A. Hatayama , J. Hiratsuka, M. Hanada, and A. Kojima
  • Organizer: th International Symposium on Negative Ions, Beams and Sources
  • Place of Presentation: St. Anne's College, Oxford, UK
  • Int'l Joint Research
• [Presentation] 2.Long-pulse acceleration of 1MeV negative ion beams toward ITER and JT-60SA neutral beam injectors (2016)
  • Author(s): J. Hiratsuka, A. Kojima, N. Umeda, M. Hanada, M. Kashiwagi, M. Yoshida, R. Nishikiori, M. Ichikawa, K. Watanabe, H. Tobari, M. Dairaku, H. Yamanaka, H. Abe, R. Kawamata, N. Shibata, T. Maejima, Y. Terunuma, Y. Oda, N. Akino, K. Mogaki, S. Sasaki, N. Seki, S. Nemoto, T. Shimizu, Y. Endo, K. Miyamoto, et al.
  • Organizer: 26th IAEA Fusion Energy Conference
  • Place of Presentation: Kyoto, Japan
  • Int'l Joint Research
• [Presentation] 水素負イオン源におけるビームハロ形成機構に関する研究 (2016)
  • Author(s): 西岡宗、阿部祥大、宮本賢治、畑山明聖、深野あづさ
  • Organizer: 第33回プラズマ・核融合学会年会
  • Place of Presentation: 東北大学青葉山キャンパス（宮城県仙台市）
• [Presentation] ITER 級負イオン加速器における負イオン引出し物理機構の解明 (2016)
  • Author(s): 平塚淳一，柏木美恵子，小島有志，梅田尚孝，吉田雅史，市川雅浩，錦 織良，宮本賢治
  • Organizer: 第33回プラズマ・核融合学会年会
  • Place of Presentation: 東北大学青葉山キャンパス（宮城県仙台市）
• [Presentation] Energy Relaxation of Negative Ion Through Coulomb Collision on Negative Ion Sources (2015)
  • Author(s): Ippei Goto, Kenji Miyamoto, Shu Nishioka, Shota Abe, Akiyoshi Hatayama
  • Organizer: 25th International TOKI Conference
  • Place of Presentation: Ceratopia Toki, Toki-city, Gifu, Japan
  • Year and Date: 2015-11-04
  • Int'l Joint Research
• [Presentation] Measurement of heat load density profile on acceleration grid in MeV-class negative ion accelerator (2015)
  • Author(s): Junichi Hiratsuka, Masaya Hanada, Atsushi Kojima, Naotaka Umeda, Mieko Kashiwagi, Kenji Miyamoto, Masafumi Yoshida, Ryo Nishikiori, Masahiro Ichikawa, Kazuhiro Watanabe and Hiroyuki Tobari
  • Organizer: The 16th International Conference on Ion Sources
  • Place of Presentation: Marriott Marquis, New York City, USA
  • Year and Date: 2015-08-27
  • Int'l Joint Research
• [Presentation] Analysis of the beam halo in negative ion sources by using 3D3V PIC code (2015)
  • Author(s): K. Miyamoto, S. Nishioka, I. Goto, A. Hatayama, M. Hanada, A. Kojima, J. Hiratsuka
  • Organizer: The 16th International Conference on Ion Sources
  • Place of Presentation: Marriott Marquis, New York City, USA
  • Year and Date: 2015-08-25
  • Int'l Joint Research
• [Presentation] Effect of Coulomb collision on the negative ion extraction mechanism in negative ion sources (2015)
  • Author(s): Goto, K. Miyamoto, S. Nishioka, S. Mattei, J. Lettry, S. Abe, and A. Hatayama
  • Organizer: The 16th International Conference on Ion Sources
  • Place of Presentation: Marriott Marquis, New York City, USA
  • Year and Date: 2015-08-24
  • Int'l Joint Research
• [Presentation] 3D3VPICシミュレーションを用いた水素負イオン源における負イオンビーム光学の研究 (2014)
  • Author(s): 宮本賢治, 西岡宗，後藤一平，畑山明聖，花田磨砂也，小島有志
  • Organizer: Plasma Conference 2014（日本物理学会（領域2）2014 年秋季大会、応用物理学会プラズマエレクトロニクス分科会第32回プラズマプロセシング研究会、プラズマ・核融合学会第31回年会）
  • Place of Presentation: 朱鷺メッセ（新潟県新潟市）
  • Year and Date: 2014-11-20
• [Presentation] Study of Plasma Meniscus Formation and Beam Halo in Negative Ion Sources Using the 3D3VPIC Model (2014)
  • Author(s): 西岡宗、宮本賢治, 後藤一平，藤代紘彰、深野あづさ、畑山明聖
  • Organizer: Plasma Conference 2014（日本物理学会（領域2）2014 年秋季大会、応用物理学会プラズマエレクトロニクス分科会第32回プラズマプロセシング研究会、プラズマ・核融合学会第31回年会）
  • Place of Presentation: 朱鷺メッセ（新潟県新潟市）
  • Year and Date: 2014-11-20
• [Presentation] 水素負イオン源におけるダブルイオンプラズマ中の電位搖動 (2014)
  • Author(s): 後藤一平、宮本賢治、西岡宗、畑山明聖
  • Organizer: Plasma Conference 2014（日本物理学会（領域2）2014 年秋季大会、応用物理学会プラズマエレクトロニクス分科会第32回プラズマプロセシング研究会、プラズマ・核融合学会第31回年会）
  • Place of Presentation: 朱鷺メッセ（新潟県新潟市）
  • Year and Date: 2014-11-20
• [Presentation] Study of negative hydrogen ion beam optics using the 3D3V PIC model (2014)
  • Author(s): K. Miyamoto, S. Nishioka, I. Goto, A. Hatayama, M. Hanada, and A. Kojima
  • Organizer: 4th International Symposium on Negative Ions, Beams and Sources
  • Place of Presentation: Max-Planck-Institut fur Plasmaphysik, Germany, Garching
  • Year and Date: 2014-10-08
• [Presentation] Study of the Negative Ion Extraction Mechanism from a Double-Ion Plasma in Negative Ion Sources (2014)
  • Author(s): I. Goto, K. Miyamoto, S. Nishioka and A. Hatayama
  • Organizer: 4th International Symposium on Negative Ions, Beams and Sources
  • Place of Presentation: Max-Planck-Institut fur Plasmaphysik, Germany, Garching
  • Year and Date: 2014-10-07
• [Presentation] Study of Plasma Meniscus Formation and Beam Halo in Negative Ion Source Using the 3D3VPIC Model (2014)
  • Author(s): S. Nishioka, K. Miyamoto, I. Goto, A. Hatayama and A. Fukano
  • Organizer: 4th International Symposium on Negative Ions, Beams and Sources
  • Place of Presentation: Max-Planck-Institut fur Plasmaphysik, Germany, Garching
  • Year and Date: 2014-10-07
• [Presentation] PICシミュレーションによるプラズマメニスカスと負イオンビームハロの解析 (2014)
  • Author(s): 宮本賢治
  • Organizer: 平成26年度負イオン研究会「負イオンビーム／科学と技術の協奏」
  • Place of Presentation: 核融合科学研究所(岐阜県土岐市)
  • Year and Date: 2014-08-27
  • Invited
• [Presentation] 水素負イオン源引き出し領域における密度揺動とプラズマ輸送に関する研究 (2014)
  • Author(s): 西岡宗、後藤一平、宮本賢治、畑山明聖
  • Organizer: 第10回 核融合エネルギー連合講演会
  • Place of Presentation: つくば国際会議場（茨城県つくば市）
  • Year and Date: 2014-06-20
• [Presentation] 水素負イオン源におけるダブルイオンプラズマからの負イオン引き出し機構の解明 (2014)
  • Author(s): 後藤一平、宮本賢治、西岡宗、畑山明聖
  • Organizer: 第10回 核融合エネルギー連合講演会
  • Place of Presentation: つくば国際会議場（茨城県つくば市）
  • Year and Date: 2014-06-20