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 | |
| Publication status | Published - Jan 1 2014 |
| Externally published | Yes |
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All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
Cite this
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, 01.01.2014.Research output: Contribution to journal › Article
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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 - 2014/1/1
Y1 - 2014/1/1
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 -