Study of the boundary plasma control with ELM like heat flux simulation by ECH power modulation

2013 Fiscal Year Final Research Report

• Project/Area Number: 23560997
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Nuclear fusion studies
• Research Institution: University of Tsukuba
• Principal Investigator: IMAI Tsuyoshi 筑波大学, 数理物質系, 教授 (80354637)
• Co-Investigator(Kenkyū-buntansha): KARIYA Tsuyoshi 筑波大学, 数理物質系, 准教授 (30451678) ; MINAMI Ryutaro 筑波大学, 数理物質系, 講師 (70370476) ; NAKASHIMA Yosuke 筑波大学, 数理物質系, 教授 (00188939)
• Project Period (FY): 2011 – 2013
• Keywords: 周辺プラズマ / 電子サイクロトロン加熱 / ELM / 熱流束 / GAMMA 10

Research Abstract

The purpose of this study is to obtain the basic data for the ELM control with ELM heat flux simulation by the ECH power modulation on the GAMMA 10 mirror device. We have succeeded in getting arbitrary intermittent heat flux with the modification of the ECH system. The more than 10MW.m2 heat flux density which is 10 times higher than the base heat flux has been produced by the ECH and the intermittent heat flux have been characterized, measuring the radial distribution of heat flux, effective temperature and so forth. These indicate the active control of the heath flux parameters is possible by ECH modulation. It is also obtained the preliminary data of the tungsten target interaction with the intermittent heat flux.

Research Products

• [Journal Article] GAMMA10/PDX Project Staus and Future (2013)
  • Author(s): T. Imai, M. Ichimura, Y. Nakashima, M. Sakamoto, I. Katanuma, M. Yoshikawa, T. Kariya, M. Hirata, J. Kohagura, R. Minami, T. Numakura, R. Ikezoe, K. Oki, K. Sakamoto
  • Journal Title: Fusion Science and Technology Volume: vol.63, 1T Pages: 8-15
  • Peer Reviewed
• [Journal Article] Development of High Power ECH Systems for High and ELM-like Heat Flux in GAMMA 10 Tandem Mirror Minami (2013)
  • Author(s): T. Imai, T. Kariya, T. Numakura, y. Endo, H. Nakabayashi, 他13名
  • Journal Title: Plasma Fusion Res. Volume: vol.8, 2402081
  • Peer Reviewed
• [Journal Article] Development of multi-purpose MW gyrotrons for fusion devices Minami (2013)
  • Author(s): T. Kariya, T. Imai, T. Numakura, Y. Endo, H. Nakabayashi, T. Eguchi, T. Shimozuma, S. Kubo, Y. Yoshimura, H. Igami, H. Takahashi, T. Mutoh, S. Ito, H. Idei, H. Zushi, Y. Yamaguchi, K. Sakamoto, Y. Mitsunaka and the GAMMA 10 Group Nucl.
  • Journal Title: Fusion Volume: vol.53, 063003
  • DOI: 10.1088/0029-5515/53/6/063003
  • Peer Reviewed
• [Journal Article] Development of 28 GHz /35 GHz Dual-Frequency Gyrotron for Fusion Research (2013)
  • Author(s): T. Eguchi, T. kariya, T. Imai, H. Nakabayashi, R. Minami, T. Numakura, R. Kawarasaki, K. Nakazawa
  • Journal Title: Transactions of Fusion Science and Technology Volume: Vol.63, 1T Pages: 280-282
  • Peer Reviewed
• [Journal Article] The improvement of the ECH antenna system in the GAMMA 10 (2013)
  • Author(s): K. Nakazawa, T. Imai, T. Kariya, R. Minami, T. Numakura, H. Nakabayashi, T. Eguchi, R. Kawarasaki
  • Journal Title: Transactions of Fusion Science and Technology Volume: Vol.63, 1T Pages: 274-276
  • Peer Reviewed
• [Presentation] ELM模擬に向けたECH入射電力変調・位置制御による高熱流束生成の基礎実験 (2014)
  • Author(s): 南龍太郎, 今井剛, 假家強, 中嶋洋輔, 他
  • Organizer: 第10回核融合エネルギー連合講演会
  • Place of Presentation: つくば市
  • Year and Date: 20140619-20
• [Presentation] 大型タンデムミラー装置を用いたダイバータ模擬の為の大熱流束プラズマの発生と非接触プラズマ実現に向けた研究の進展 (2013)
  • Author(s): 中嶋洋輔, 坂本瑞樹, 市村真, 今井剛, 假家強, 南龍太郎, 他
  • Organizer: 第30回プラズマ核融合学会
  • Place of Presentation: 東工大、東京都
  • Year and Date: 20131203-06
  • Invited
• [Presentation] Generation and Control of High Intermittent Heat Load Pattern for Divertor Simulation Studies in GAMMA 10 Tandem Mirror (2013)
  • Author(s): Ryutaro Minami, Tsuyoshi Imai, Tsuyoshi Kariya, Yousuke Nakashima, et al
  • Organizer: 23rd International Toki Conference (ITC-23)
  • Place of Presentation: Toki, Gifu, Japan
  • Year and Date: 20131118-21
• [Presentation] Development of High Power ECH Systems for High and ELM-like Heat Flux in GAMMA 10 Tandem Nirror (2012)
  • Author(s): R. Minami, T. Imai, T. Kariya, T. Numakura, 他
  • Organizer: 22nd International Toki Conference (ITC-22)
  • Place of Presentation: Toki, Gifu, Japan
  • Year and Date: 20121119-22
• [Presentation] The improvement of the ECH antenna system in the GAMMA 10 (2012)
  • Author(s): K. Nakazawa, T. Imai, T. Kariya, R. Minami, T. Numakura, H. Nakabayashi, T. Eguchi, R. Kawarasaki and GAMMA10 group
  • Organizer: Ihe Inter. Conf. on Open Magnetic Systems for Plasma Confinement and the Inter. Workshop on Plasma Material Interaction Facilities for Fusion
  • Place of Presentation: Tsukuba, Ibaraki, Japan
  • Year and Date: 20120827-31
• [Presentation] Development of MW Gyrotrons for Fusion Devices by University of Tsukuba (2012)
  • Author(s): R. Minami, T. Kariya, T. Imai, T. Shimozuma, K. Sakamoto, 他14名
  • Organizer: 24th IAEA Fusion Energy Conference
  • Place of Presentation: San Diego, USA
  • Year and Date: 20120000
• [Presentation] ECH Power Modulation in GAMMA 10 Tandem Mirror (2011)
  • Author(s): R. Minami, T. Kariya, T. Imai, 他
  • Organizer: Plasma Conference 2011(プラズマ核融合学会・物理学会合同学会)
  • Place of Presentation: Kanazawa
  • Year and Date: 2011-11-23
• [Presentation] Improvement of the Central cell ECRH Antenna in GAMMA 10 (2011)
  • Author(s): H. Aoki, T. Imai, T. Kariya, R. Minami, 他
  • Organizer: Plasma Conference 2011(プラズマ核融合学会・物理学会合同学会)
  • Place of Presentation: Kanazawa
  • Year and Date: 2011-11-23