Generation and control of high intermittent heat load pattern for divertor simulation studies in GAMMA 10 tandem mirror

Ryutaro Minami; Tsuyoshi Imai; Tsuyoshi Kariya; Tomoharu Numakura; Taku Eguchi; Ryo Kawarasaki; Kazuhiro Nakazawa; Takaki Kato; Fumiya Sato; Hirotaka Nanzai; Makoto Uehara; Yoichi Endo; Mafumi Hirata; Makoto Ichimura; Ryuya Ikezoe; Isao Katanuma; Junko Kohagura; Yousuke Nakashima; Kensuke Oki; Mizuki Sakamoto; Masayuki Yoshikawa

doi:10.1585/pfr.9.3402116

Generation and control of high intermittent heat load pattern for divertor simulation studies in GAMMA 10 tandem mirror

Ryutaro Minami, Tsuyoshi Imai, Tsuyoshi Kariya, Tomoharu Numakura, Taku Eguchi, Ryo Kawarasaki, Kazuhiro Nakazawa, Takaki Kato, Fumiya Sato, Hirotaka Nanzai, Makoto Uehara, Yoichi Endo, Mafumi Hirata, Makoto Ichimura, Ryuya Ikezoe, Isao Katanuma, Junko Kohagura, Yousuke Nakashima, Kensuke Oki, Mizuki SakamotoMasayuki Yoshikawa

Research output: Contribution to journal › Article › peer-review

Abstract

Development of high power gyrotrons and electron cyclotron heating (ECH) systems for the power modulation experiments in GAMMA 10 have been started in order to generate and control the high heat flux and to make the ELM (edge localized mode) like intermittent heat load pattern for divertor simulation studies. ECH for potential formation at plug region (P-ECH) produces electron flow with high energy along the magnetic filed line. By modulating the ECH power, we can obtain arbitrary pulse heat load patterns. By changing the on/off timing, we can simulate the ELM intermittent heat pulses. The heat flux factor increases almost linearly with ECH power. An intense axial electron flow with energy from hundreds of eV to a few keV generated by fundamental P-ECH is observed. When ECH is turned off, a short burst appears in the end loss ion current due to the axial drain of the confined plasma.

Original language	English
Article number	3402116
Journal	Plasma and Fusion Research
Volume	9
Issue number	SpecialIssue2
DOIs	https://doi.org/10.1585/pfr.9.3402116
Publication status	Published - 2014
Externally published	Yes

All Science Journal Classification (ASJC) codes

Condensed Matter Physics

Access to Document

10.1585/pfr.9.3402116

Cite this

Minami, R., Imai, T., Kariya, T., Numakura, T., Eguchi, T., Kawarasaki, R., Nakazawa, K., Kato, T., Sato, F., Nanzai, H., Uehara, M., Endo, Y., Hirata, M., Ichimura, M., Ikezoe, R., Katanuma, I., Kohagura, J., Nakashima, Y., Oki, K., ... Yoshikawa, M. (2014). Generation and control of high intermittent heat load pattern for divertor simulation studies in GAMMA 10 tandem mirror. Plasma and Fusion Research, 9(SpecialIssue2), [3402116]. https://doi.org/10.1585/pfr.9.3402116

Generation and control of high intermittent heat load pattern for divertor simulation studies in GAMMA 10 tandem mirror. / Minami, Ryutaro; Imai, Tsuyoshi; Kariya, Tsuyoshi; Numakura, Tomoharu; Eguchi, Taku; Kawarasaki, Ryo; Nakazawa, Kazuhiro; Kato, Takaki; Sato, Fumiya; Nanzai, Hirotaka; Uehara, Makoto; Endo, Yoichi; Hirata, Mafumi; Ichimura, Makoto; Ikezoe, Ryuya; Katanuma, Isao; Kohagura, Junko; Nakashima, Yousuke; Oki, Kensuke; Sakamoto, Mizuki; Yoshikawa, Masayuki.

In: Plasma and Fusion Research, Vol. 9, No. SpecialIssue2, 3402116, 2014.

Research output: Contribution to journal › Article › peer-review

Minami, R, Imai, T, Kariya, T, Numakura, T, Eguchi, T, Kawarasaki, R, Nakazawa, K, Kato, T, Sato, F, Nanzai, H, Uehara, M, Endo, Y, Hirata, M, Ichimura, M, Ikezoe, R, Katanuma, I, Kohagura, J, Nakashima, Y, Oki, K, Sakamoto, M & Yoshikawa, M 2014, 'Generation and control of high intermittent heat load pattern for divertor simulation studies in GAMMA 10 tandem mirror', Plasma and Fusion Research, vol. 9, no. SpecialIssue2, 3402116. https://doi.org/10.1585/pfr.9.3402116

Minami, Ryutaro ; Imai, Tsuyoshi ; Kariya, Tsuyoshi ; Numakura, Tomoharu ; Eguchi, Taku ; Kawarasaki, Ryo ; Nakazawa, Kazuhiro ; Kato, Takaki ; Sato, Fumiya ; Nanzai, Hirotaka ; Uehara, Makoto ; Endo, Yoichi ; Hirata, Mafumi ; Ichimura, Makoto ; Ikezoe, Ryuya ; Katanuma, Isao ; Kohagura, Junko ; Nakashima, Yousuke ; Oki, Kensuke ; Sakamoto, Mizuki ; Yoshikawa, Masayuki. / Generation and control of high intermittent heat load pattern for divertor simulation studies in GAMMA 10 tandem mirror. In: Plasma and Fusion Research. 2014 ; Vol. 9, No. SpecialIssue2.

@article{14fa3b1719684080b73f5d37341e8535,

title = "Generation and control of high intermittent heat load pattern for divertor simulation studies in GAMMA 10 tandem mirror",

abstract = "Development of high power gyrotrons and electron cyclotron heating (ECH) systems for the power modulation experiments in GAMMA 10 have been started in order to generate and control the high heat flux and to make the ELM (edge localized mode) like intermittent heat load pattern for divertor simulation studies. ECH for potential formation at plug region (P-ECH) produces electron flow with high energy along the magnetic filed line. By modulating the ECH power, we can obtain arbitrary pulse heat load patterns. By changing the on/off timing, we can simulate the ELM intermittent heat pulses. The heat flux factor increases almost linearly with ECH power. An intense axial electron flow with energy from hundreds of eV to a few keV generated by fundamental P-ECH is observed. When ECH is turned off, a short burst appears in the end loss ion current due to the axial drain of the confined plasma.",

author = "Ryutaro Minami and Tsuyoshi Imai and Tsuyoshi Kariya and Tomoharu Numakura and Taku Eguchi and Ryo Kawarasaki and Kazuhiro Nakazawa and Takaki Kato and Fumiya Sato and Hirotaka Nanzai and Makoto Uehara and Yoichi Endo and Mafumi Hirata and Makoto Ichimura and Ryuya Ikezoe and Isao Katanuma and Junko Kohagura and Yousuke Nakashima and Kensuke Oki and Mizuki Sakamoto and Masayuki Yoshikawa",

note = "Publisher Copyright: {\textcopyright} 2014 The Japan Society of Plasma Science and Nuclear Fusion Research.",

year = "2014",

doi = "10.1585/pfr.9.3402116",

language = "English",

volume = "9",

journal = "Plasma and Fusion Research",

issn = "1880-6821",

publisher = "The Japan Society of Plasma Science and Nuclear Fusion Research (JSPF)",

number = "SpecialIssue2",

}

TY - JOUR

T1 - Generation and control of high intermittent heat load pattern for divertor simulation studies in GAMMA 10 tandem mirror

AU - Minami, Ryutaro

AU - Imai, Tsuyoshi

AU - Kariya, Tsuyoshi

AU - Numakura, Tomoharu

AU - Eguchi, Taku

AU - Kawarasaki, Ryo

AU - Nakazawa, Kazuhiro

AU - Kato, Takaki

AU - Sato, Fumiya

AU - Nanzai, Hirotaka

AU - Uehara, Makoto

AU - Endo, Yoichi

AU - Hirata, Mafumi

AU - Ichimura, Makoto

AU - Ikezoe, Ryuya

AU - Katanuma, Isao

AU - Kohagura, Junko

AU - Nakashima, Yousuke

AU - Oki, Kensuke

AU - Sakamoto, Mizuki

AU - Yoshikawa, Masayuki

PY - 2014

Y1 - 2014

N2 - Development of high power gyrotrons and electron cyclotron heating (ECH) systems for the power modulation experiments in GAMMA 10 have been started in order to generate and control the high heat flux and to make the ELM (edge localized mode) like intermittent heat load pattern for divertor simulation studies. ECH for potential formation at plug region (P-ECH) produces electron flow with high energy along the magnetic filed line. By modulating the ECH power, we can obtain arbitrary pulse heat load patterns. By changing the on/off timing, we can simulate the ELM intermittent heat pulses. The heat flux factor increases almost linearly with ECH power. An intense axial electron flow with energy from hundreds of eV to a few keV generated by fundamental P-ECH is observed. When ECH is turned off, a short burst appears in the end loss ion current due to the axial drain of the confined plasma.

AB - Development of high power gyrotrons and electron cyclotron heating (ECH) systems for the power modulation experiments in GAMMA 10 have been started in order to generate and control the high heat flux and to make the ELM (edge localized mode) like intermittent heat load pattern for divertor simulation studies. ECH for potential formation at plug region (P-ECH) produces electron flow with high energy along the magnetic filed line. By modulating the ECH power, we can obtain arbitrary pulse heat load patterns. By changing the on/off timing, we can simulate the ELM intermittent heat pulses. The heat flux factor increases almost linearly with ECH power. An intense axial electron flow with energy from hundreds of eV to a few keV generated by fundamental P-ECH is observed. When ECH is turned off, a short burst appears in the end loss ion current due to the axial drain of the confined plasma.

UR - http://www.scopus.com/inward/record.url?scp=84945305043&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84945305043&partnerID=8YFLogxK

U2 - 10.1585/pfr.9.3402116

DO - 10.1585/pfr.9.3402116

M3 - Article

AN - SCOPUS:84945305043

VL - 9

JO - Plasma and Fusion Research

JF - Plasma and Fusion Research

SN - 1880-6821

IS - SpecialIssue2

M1 - 3402116

ER -

Generation and control of high intermittent heat load pattern for divertor simulation studies in GAMMA 10 tandem mirror

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this