NUMAKURA Tomoharu

Affiliation

Institute of Pure and Applied Sciences

Official title

Assistant Professor

Birth date

1975-06

Email

Phone

0298537474

Research fields


Plasma science

Research keywords


Scaling law
Diagnostics
Plasma Confinement

Research projects


高電位・強径電場シアー形成によるプラズマ閉じ込め改善効果の評価	2007 -- 2009-03	NUMAKURA Tomoharu	Japan Society for the Promotion of Science (JSPS)/Grant-in-Aid for Young Scientists (B)	2,100,000Yen
新しいイオン及び電子温度二次元空間分布構造同時計測法の開発と温度・電位分布の相関	2000 -- 2003-03	NUMAKURA Tomoharu	Japan Society for the Promotion of Science (JSPS)/Grant-in-Aid for JSPS Fellows	3,000,000Yen

Academic background


-- 1998-03	University of Tsukuba First Cluster of College 自然学類物理学専攻
-- 2003-03	University of Tsukuba Graduate School, Division of Physics 物理学専攻

Degree


	Doctor of Science	University of Tsukuba

Licenses and qualifications


2011-02	第一種冷凍機械

Academic societies


-- (current)	THE JAPAN SOCIETY OF PLASMA SCIENCE AND NUCLEAR FUSION RESEARCH

Honors & Awards


2004-06	核融合エネルギー連合講演会に於ける論文発表による優秀賞
2003-03	筑波大学大学院優秀論文表彰

Articles

Preliminary experiments on the bias system with concentric electrodes in pilot GAMMA PDX-SC
Tomoharu Numakura; Mizuki Sakamoto; Naomichi Ezumi; Ma...
Journal of Plasma Physics/92(3)/pp.E80-1-E80-10, 2026-06
Dynamic response of detached plasma to intermittent heat and particle fluxes induced by double-pulse ECH in GAMMA 10/PDX
Yoshikawa Masayuki; Kohagura Junko; Ezumi Naomichi; Ka...
NUCLEAR FUSION/66(5), 2026-05-01
Effect of Edge-Localized Mode Simulation on Detached Plasma in the Divertor Simulation Experimental Module of GAMMA 10/PDX
YOSHIKAWA Masayuki; Kohagura Junko; Ezumi Naomichi; Ka...
30th IAEA Fusion Energy Conference (FEC2025)/IAEA-CN-316-2691, 2025-10
Behavior of detached simulation plasma by suddenly changed particle flux in GAMMA 10/PDX
Yoshikawa Masayuki; Kohagura Junko; Ezumi Naomichi; Ka...
AIP ADVANCES/14(12), 2024-12-01
DEVELOPMENT OF MW GYROTRONS WITH COLLABORATION RESEARCH FOR PLASMA HEATING IN FUSION EXPERIMENTAL DEVICES
KARIYA Tsuyoshi; R.Minami; IMAI T.; NUMAKURA T.; YONED...
28th IAEA Fusion Energy Conference (FEC 2020)/p.IAEA-CN-316-1671, 2023-10
EFFECT OF HIGHER PARTICLE FLUX ON DETACHED SIMULATION PLASMA IN THE GAMMA 10/PDX DIVERTOR SIMULATION EXPERIMENTAL MODULE
YOSHIKAWA Masayuki; Kohagura J.; Ezumi N.; Kariya T.; ...
Proc. 29th IAEA Fusion Energy Conference (FEC2023)/p.IAEA-CN-316/1674 27901, 2023-10
Hydrogen recycling near fuzz tungsten surfaces under high-vacuum background condition
Hwangbo D.; Sugiyama T.; Sakamoto M.; Gamo H.; Kondo A.; ...
25th International Conference on Plasma Surface Interaction in Fusion Devices (PSI-25), 2022-6-13
Development of 28/35 GHz Dual-Frequency and 14 GHz Gyrotrons for Advanced Fusion Devices
Kariya Tsuyoshi; R.MInami; T.Imai; Numakura T.; Endo Y.; Sa...
28th IAEA Fusion Energy Conference (FEC 2020), 2021-05
Study of detached plasma profile in the divertor simulation experimental module of GAMMA 10/PDX
Yoshikawa Masayuki; Kohagura J.; Ezumi N.; Iijima T.; Nak...
Proc. 28th IAEA Fusion Energy Conference (FEC2020)/p.17678, 2021-05
Study of detached plasma profile in the divertor simulation experimental module of tandem mirror GAMMA 10/PDX
Yoshikawa Masayuki; Kohagura J.; Ezumi N.; Iijima T.; Nak...
AIP Advances/11(12)/pp.125231-1-125231-6, 2021-12
Generation and Measurement of High Intermittent Heat Flux in GAMMA 10/PDX
Minami Ryutaro; KARIYA Tsuyoshi; IMAI Tsuyoshi; NUMAKURA ...
Plasma and Fusion Research/14, 2019-02
CiNii Tsukuba Repository
Development of High Power Gyrotrons for Advanced Fusion Devices and DEMO
Kariya Tsuyoshi; Minami R.; Imai T.; Numakura T.; M. OKAD...
The 27th IAEA FUSION ENERGY CONFERENCE (FEC-2018), 2018-10
Code Development for Calculating Electron Beams in the Cavities of the Future High-Power Gyrotrons
NUMAKURA Tomoharu; KARIYA Tsuyoshi; MINAMI Ryutaro; OKADA Ma...
Plasma and Fusion Research/14, 2019
CiNii Tsukuba Repository
Development of over-MW gyrotrons for fusion at 14 GHz to sub-THz frequencies
假家強; Tsuyoshi Imai; Ryutaro MInami; K. Sakamoto Y. Oda ...
Nuclear Fusion/57, 2017-04
Performance Test of Double-Disk Type Output Window of 28/35 GHz Dual-Frequency Gyrotron for CW Operation
Okada Maki; kariya Tsuyoshi; Imai Tsuyoshi; Minami Ryuta...
Plasma and Fusion Research/14, 2019-02
CiNii Tsukuba Repository
Development of high power gyrotrons for advanced fusion devices
Kariya T.; Minami R.; Imai T.; Okada M.; Motoyoshi F.; Nu...
NUCLEAR FUSION/59(6), 2019-04
Synergistic effect of nitrogen and hydrogen seeding gases on plasma detachment in the GAMMA 10/PDX tandem mirror
Ezumi N.; Iijima T.; Sakamoto M.; Nakashima Y.; Hirata M...
NUCLEAR FUSION/59(6), 2019-06
Impact of additional plasma heating on detached plasma formation in divertor simulation experiments using the GAMMA 10/PDX tandem mirror
Nakashima Y.; Islam M. S.; Iijima T.; Sakamoto M.; Ezumi ...
NUCLEAR MATERIALS AND ENERGY/18/pp.216-221, 2019-01
Development of over-MW gyrotrons for fusion at 14 GHz to sub-THz frequencies
Kariya T.; Imai T.; Minami R.; Sakamoto K.; Oda Y.; Ikeda...
Nuclear Fusion/57, 2017-04
Numerical Calculation of the Gyrotron Oscillator in ECH Systems in GAMMA 10 by the use of Parallel Algorithms
T. Numakura; T. Imai; T. Kariya; R. Minami; H. Nakabayashi; T....
Transactions of Fusion Science and Technology/63(1T)/pp.295-297, 2013-05
Density Fluctuation Measurement for Studying the Effect of Potential and Electric Field Formation in GAMMA 10
YOSHIKAWA Masayuki; MATSUMOTO Toshiaki; SHIMA Yoriko; MIYATA...
Plasma and Fusion Research/2(0)/pp.48-48, 2007-01
CiNii
Characterization and Interpretation of the Quantum Efficiencies of Multilayer Semiconductor Detectors Using a New Theory
沼倉友晴
Journal of Synchrotron Radiation/5/p.877-879, 1998-01
Investigations of Electron Behavior in the GAMMA 10 Tandem Mirror on the Basis of X-Ray Analyses Using a Novel Theory on Semiconductor Detector Response
沼倉友晴
Transactions of Fusion Technology/35/p.151-155, 1999-01
Effects of Neutrons on Semiconductor X-Ray Detectors Including n-Type Joint European Torus and p-Type GAMMA 10 Tomography Detectors
沼倉友晴
Review of Scientific Instruments/70/p.577-580, 1999-01
Newly Developed Matrix-Type Semiconductor Detector for Temporally and Spatially Resolved X-Ray Analyses Ranging Down to a Few Tens eV Using a Single Plasma Shot
沼倉友晴
Review of Scientific Instruments/70/p.633-636, 1999-01
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Conference, etc.

The electrode biasing system in Pilot GAMMA PDX-SC(PGX-SC)
沼倉友晴; 坂本瑞樹; 江角直道; 吉川正志; 南龍太郎; 平田真史; 小波藏純子; 中嶋洋輔; 宮内礼那...
第42回プラズマ・核融合学会年会/2025-12-01
The electrode biasing system in Pilot GAMMA PDX-SC
友晴沼倉; 坂本瑞樹; 江角直道; 南龍太郎; 平田真史; 純子小波藏; 宮内礼那; 瀬戸拓実; 洋輔中嶋
14th International Conference on Open Magnetic Systems for Plasma Confinement/2025-09-22
大電力ECHによる間欠的熱負荷生成実験とPilot GAMMA PDX-SCに向けたECHシステムの開発
南龍太郎; 假家強; 沼倉友晴; キムソンウク; 鈴木竜太; 江角直道; 吉川正志; 平田真史; 小波蔵純子; 瀬...
第42回プラズマ・核融合学会年会/2025-12-01
Development of the Electron Cyclotron Heating System for High-Density Plasmas in the Pilot GAMMA PDX-SC
Minami R.; Kariya T.; Numakura T.; Ezumi N.; Yoshikaw...
14th International Conference on Open Magnetic Systems for Plasma Confinement/2025-09-22
Effect of edge-localized mode simulation on detached plasma in the divertor simulation experimental module of GAMMA 10/PDX
YOSHIKAWA Masayuki; Kohagura Junko; Ezumi Naomichi; Ka...
30th IAEA Fusion Energy Conference (FEC2025)/2025-10-13--2025-10-18
Preliminary experiments on the electrode biasing system in Pilot GAMMA PDX-SC
沼倉友晴; 坂本瑞樹; 江角直道; 吉川正志; 南龍太郎; 平田真史; 小波蔵純子; 中嶋洋輔...
プラズマ核融合学会第41回年会/2024-11-17--2024-11-20
Present Status of a Pilot GAMMA PDX-SC project
Sakamoto Mizuki; Kariya T.; Yoshikawa M.; Ezumi N.; M...
8th International Workshop on Plasma Material Interaction Facilities for Fusion Research (PMIF2023)/2023-10-30--2023-11-01
Contribution of Mirror Devices in Tsukuba to Fusion Energy Development
Sakamoto Mizuki; Kariya T.; Yoshikawa. M.; Ezumi N.; ...
2nd International Fusion and Plasma Conference & 13th International Conference on Open Magnetic Systems for Plasma Confinement (iFPC & OS2023)/2023-08-21--2023-08-25
Design, Construction and First Operation of Pilot GAMMA PDX-SC Superconducting Mirror Device
Sakamoto Mizuki; Kariya Tsuyoshi; Yoshikawa Masayuki; ...
29th IAEA Fusion Energy Conference (FEC 2023)/2023-10-16--2023-10-21
大電力ECHによる間欠的熱負荷生成実験と Pilot GAMMA PDX-SCに向けたECHシステムの開発
南龍太郎; 假家強; 沼倉友晴; 米田優; 岸紘平; 山戸教平; 江角直道; 吉川 ...
プラズマ核融合学会第40回年会/2023-11-27--2023-11-30
The electrode biasing system for vortex confinements in Pilot GAMMA PDX-SC
沼倉友晴; 坂本瑞樹; 江角直道; 吉川正志; 南龍太郎; 平田真史; 小波藏純子; ...
プラズマ核融合学会第40回年会/2023-11-27--2023-11-30
Code Development for the Mode Interactions in Future High-Power Gyrotrons
沼倉友晴; 南龍太郎; 米田優; 今井　剛; 坂本瑞樹
プラズマ核融合学会第40回年会/2023-11-27--2023-11-30
EFFECT OF HIGHER PARTICLE FLUX ON DETACHED SIMULATION PLASMA IN THE GAMMA 10/PDX DIVERTOR SIMULATION EXPERIMENTAL MODULE
Yoshikawa Masayuki; Kohagura J; Ezumi N.; 龍太郎(数理物質系) ...
29th IAEA Fusion Energy Conference (FEC2023)/2023-10-16--2023-10-21
DEVELOPMENT OF MW GYROTRONS WITH COLLABORATION RESEARCH FOR PLASMA HEATING IN FUSION EXPERIMENTAL DEVICES
Kariya Tsuyoshi; MINAMI R.; IMAI T.; NUMAKURA T.; YON...
The 29th IAEA FUSION ENERGY CONFERENCE (FEC 2023)/2023-10-06--2023-10-21
RFビーム軌道調整による長パルスECHにおける高密度プラズマ・熱流束分布の最適化
米田優; 假家強; 南龍太郎; 沼倉友晴; 岸紘平、山戸教平、嶋頼子、加藤駿人; 小波蔵純子; 吉川正志; 高梨宏...
第40回プラズマ核融合学会年会/2023-11-27--2023-11-30
超伝導ミラー装置Pilot GAMMA PDX-SC実験の進展
坂本瑞樹; 假家強; 吉川正志; 江角直道; 南龍太郎; 平田真史; 小波蔵純子; 沼...
The 40th JSPF annual meeting/2023-11-27--2023-11-30
Preliminary experiment and research plan of Pilot GAMMA PDX-SC project
坂本瑞樹; 假家強; 吉川正志; 江角直道; 南龍太郎; 平田真史; 小波藏純子; 沼倉友晴; 東郷訓; 皇甫度均; 杉山昭彦...
第39回プラズマ・核融合学会年会/2022-11-22--2022-11-25
Code Development for the Starting Currents and Overmoded Interactions in Future High-Power Gyrotrons
沼倉友晴; 假家　強; 南龍太郎; 米田優; 今井　剛; 坂本瑞樹
第39回プラズマ・核融合学会年会/2022-11-22--2022-11-25
金属表面の水素リサイクリングにおける背景ガス圧力と表面構造の影響
皇甫度均; 西島大輔; 重松直希; Patino M.; 高梨宏介; 岡本拓馬; 高橋理志; 河野 ...
第39回プラズマ・核融合学会年会/2022-11-22--2022-11-25
Hydrogen recycling near fuzz tungsten surfaces under high-vacuum background condition
Hwangbo Dogyun; Sugiyama T.; Sakamoto M.; Gamo H.; Kondo ...
25th International Conference on Plasma Surface Interaction in Controlled Fusion Devices (PSI-25)/2022-06-13--2022-06-17
大電力ECHによる間欠的熱負荷生成実験とパイロット装置に向けたECHシステムの検討
南龍太郎; 假家強; 沼倉友晴; 米田優; 金田ことの; 遠藤洋一; 今井剛; 坂本瑞樹
第39回プラズマ・核融合学会年会/2022-11-22--2022-11-25
原型炉ダイバータ開発研究に向けた長パルスECHによる高密度プラズマの生成
米田優; 假家強; 南龍太郎; 沼倉友晴; 重松直希、嶋頼子、加藤駿人、高橋圭介; 小波蔵純子; 吉川正志; 岡本拓馬、河原大翔...
第39回プラズマ・核融合学会年会/2022-11-22--2022-11-25
筑波大学におけるジャイロトロン開発の現状
假家強; 出射浩、恩地拓己、吉村泰夫; 南龍太郎; 沼倉友晴; 米田優; 坂本瑞樹
第39回プラズマ・核融合学会年会/2022-11-22--2022-11-25
Recent results of GAMMA 10/PDX and construction of a superconducting mirror machine
Sakamoto Mizuki; Kariya Tsuyoshi; Yoshikawa Masayuki; Ezu...
3rd International Workshop on Gas Dynamic Trap based Fusion Neutron Source (GDT-FNS)/2021-09-13--2021-09-14
Present status of GAMMA 10/PDX and a new project of a superconducting mirror machine
Sakamoto Mizuki; Kariya Tsuyoshi; Yoshikawa Masayuki; Ezu...
International Mini-Workshop on Open Magnetic Systems for Plasma Confinement (OS2021)/2021-08-24--2021-08-25
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Teaching


2025-10 -- 2026-02	Physics experiment II	University of Tsukuba.
2025-04 -- 2025-08	Physics experiment II	University of Tsukuba.
2025-10 -- 2025-12	Physics Seminar	University of Tsukuba.
2025-10 -- 2026-02	Internship in Physics 2	University of Tsukuba.
2025-04 -- 2025-08	Internship in Physics 2	University of Tsukuba.
2025-10 -- 2026-02	Internship in Physics 1	University of Tsukuba.
2025-04 -- 2025-08	Internship in Physics 1	University of Tsukuba.
2025-10 -- 2026-02	Graduation Thesis	University of Tsukuba.
2025-04 -- 2025-08	Graduation Thesis	University of Tsukuba.
2025-10 -- 2026-02	Collaborative Research in Physics V	University of Tsukuba.
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(Last updated: 2026-06-30)