The first experiment of MPD Jet injection into GAMMA 10 plasma

Kazuya Ichimura, Yousuke Nakashima, Hisato Takeda, Katsuhiro Hosoi, Satoru Kigure, Shigehito Takahashi, Miki Iwamoto, Yasunari Hosoda, Mafumi Hirata, Ryuya Ikezoe, Kensuke Oki, Masayuki Yoshikawa, Mizuki Sakamoto, Tsuyoshi Imai, Makoto Ichimura

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Results of the first experiment of short pulse plasma injection by MPD (magneto plasma dynamic) Jet into GAMMA 10/PDX's longer pulse plasma are reported. In the experiment, a new method for plasma start-up without using plasma guns was applied. In this method, the main plasma of GAMMA 10/PDX was produced by ECRH (electron cyclotron resonance heating) and ICRF (ion cyclotron range of frequency). Then, MPD Jet plasma was injected into the main plasma along magnetic field line. As a result, density of the main plasma was increased and the end-loss flux was doubled. Flow velocity of the plasmoid injected by the MPD Jet was evaluated from the change of plasma density in each cell of the tandem mirror. The result indicated that the flow speed is several km/s. It is found that the plasmoid worked as strong fueling device which dramatically raises the density of plasma. Therefore injection of MPD Jet plasma into tandem mirror can be a useful tool to study physical phenomena of divertor and PWI.

Original languageEnglish
Article number3406098
JournalPlasma and Fusion Research
Volume9
Issue numberSpecialIssue2
DOIs
Publication statusPublished - Jan 1 2014
Externally publishedYes

Fingerprint

plasma dynamics
injection
tandem mirrors
plasma jets
plasma guns
refueling
electron cyclotron resonance
pulses
plasma density
cyclotrons
flow velocity
heating
cells
magnetic fields

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

Cite this

Ichimura, K., Nakashima, Y., Takeda, H., Hosoi, K., Kigure, S., Takahashi, S., ... Ichimura, M. (2014). The first experiment of MPD Jet injection into GAMMA 10 plasma. Plasma and Fusion Research, 9(SpecialIssue2), [3406098]. https://doi.org/10.1585/pfr.9.3406098

The first experiment of MPD Jet injection into GAMMA 10 plasma. / Ichimura, Kazuya; Nakashima, Yousuke; Takeda, Hisato; Hosoi, Katsuhiro; Kigure, Satoru; Takahashi, Shigehito; Iwamoto, Miki; Hosoda, Yasunari; Hirata, Mafumi; Ikezoe, Ryuya; Oki, Kensuke; Yoshikawa, Masayuki; Sakamoto, Mizuki; Imai, Tsuyoshi; Ichimura, Makoto.

In: Plasma and Fusion Research, Vol. 9, No. SpecialIssue2, 3406098, 01.01.2014.

Research output: Contribution to journalArticle

Ichimura, K, Nakashima, Y, Takeda, H, Hosoi, K, Kigure, S, Takahashi, S, Iwamoto, M, Hosoda, Y, Hirata, M, Ikezoe, R, Oki, K, Yoshikawa, M, Sakamoto, M, Imai, T & Ichimura, M 2014, 'The first experiment of MPD Jet injection into GAMMA 10 plasma', Plasma and Fusion Research, vol. 9, no. SpecialIssue2, 3406098. https://doi.org/10.1585/pfr.9.3406098
Ichimura K, Nakashima Y, Takeda H, Hosoi K, Kigure S, Takahashi S et al. The first experiment of MPD Jet injection into GAMMA 10 plasma. Plasma and Fusion Research. 2014 Jan 1;9(SpecialIssue2). 3406098. https://doi.org/10.1585/pfr.9.3406098
Ichimura, Kazuya ; Nakashima, Yousuke ; Takeda, Hisato ; Hosoi, Katsuhiro ; Kigure, Satoru ; Takahashi, Shigehito ; Iwamoto, Miki ; Hosoda, Yasunari ; Hirata, Mafumi ; Ikezoe, Ryuya ; Oki, Kensuke ; Yoshikawa, Masayuki ; Sakamoto, Mizuki ; Imai, Tsuyoshi ; Ichimura, Makoto. / The first experiment of MPD Jet injection into GAMMA 10 plasma. In: Plasma and Fusion Research. 2014 ; Vol. 9, No. SpecialIssue2.
@article{24b581081bcc456087c95a2f9e449b67,
title = "The first experiment of MPD Jet injection into GAMMA 10 plasma",
abstract = "Results of the first experiment of short pulse plasma injection by MPD (magneto plasma dynamic) Jet into GAMMA 10/PDX's longer pulse plasma are reported. In the experiment, a new method for plasma start-up without using plasma guns was applied. In this method, the main plasma of GAMMA 10/PDX was produced by ECRH (electron cyclotron resonance heating) and ICRF (ion cyclotron range of frequency). Then, MPD Jet plasma was injected into the main plasma along magnetic field line. As a result, density of the main plasma was increased and the end-loss flux was doubled. Flow velocity of the plasmoid injected by the MPD Jet was evaluated from the change of plasma density in each cell of the tandem mirror. The result indicated that the flow speed is several km/s. It is found that the plasmoid worked as strong fueling device which dramatically raises the density of plasma. Therefore injection of MPD Jet plasma into tandem mirror can be a useful tool to study physical phenomena of divertor and PWI.",
author = "Kazuya Ichimura and Yousuke Nakashima and Hisato Takeda and Katsuhiro Hosoi and Satoru Kigure and Shigehito Takahashi and Miki Iwamoto and Yasunari Hosoda and Mafumi Hirata and Ryuya Ikezoe and Kensuke Oki and Masayuki Yoshikawa and Mizuki Sakamoto and Tsuyoshi Imai and Makoto Ichimura",
year = "2014",
month = "1",
day = "1",
doi = "10.1585/pfr.9.3406098",
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 - The first experiment of MPD Jet injection into GAMMA 10 plasma

AU - Ichimura, Kazuya

AU - Nakashima, Yousuke

AU - Takeda, Hisato

AU - Hosoi, Katsuhiro

AU - Kigure, Satoru

AU - Takahashi, Shigehito

AU - Iwamoto, Miki

AU - Hosoda, Yasunari

AU - Hirata, Mafumi

AU - Ikezoe, Ryuya

AU - Oki, Kensuke

AU - Yoshikawa, Masayuki

AU - Sakamoto, Mizuki

AU - Imai, Tsuyoshi

AU - Ichimura, Makoto

PY - 2014/1/1

Y1 - 2014/1/1

N2 - Results of the first experiment of short pulse plasma injection by MPD (magneto plasma dynamic) Jet into GAMMA 10/PDX's longer pulse plasma are reported. In the experiment, a new method for plasma start-up without using plasma guns was applied. In this method, the main plasma of GAMMA 10/PDX was produced by ECRH (electron cyclotron resonance heating) and ICRF (ion cyclotron range of frequency). Then, MPD Jet plasma was injected into the main plasma along magnetic field line. As a result, density of the main plasma was increased and the end-loss flux was doubled. Flow velocity of the plasmoid injected by the MPD Jet was evaluated from the change of plasma density in each cell of the tandem mirror. The result indicated that the flow speed is several km/s. It is found that the plasmoid worked as strong fueling device which dramatically raises the density of plasma. Therefore injection of MPD Jet plasma into tandem mirror can be a useful tool to study physical phenomena of divertor and PWI.

AB - Results of the first experiment of short pulse plasma injection by MPD (magneto plasma dynamic) Jet into GAMMA 10/PDX's longer pulse plasma are reported. In the experiment, a new method for plasma start-up without using plasma guns was applied. In this method, the main plasma of GAMMA 10/PDX was produced by ECRH (electron cyclotron resonance heating) and ICRF (ion cyclotron range of frequency). Then, MPD Jet plasma was injected into the main plasma along magnetic field line. As a result, density of the main plasma was increased and the end-loss flux was doubled. Flow velocity of the plasmoid injected by the MPD Jet was evaluated from the change of plasma density in each cell of the tandem mirror. The result indicated that the flow speed is several km/s. It is found that the plasmoid worked as strong fueling device which dramatically raises the density of plasma. Therefore injection of MPD Jet plasma into tandem mirror can be a useful tool to study physical phenomena of divertor and PWI.

UR - http://www.scopus.com/inward/record.url?scp=84945277089&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84945277089&partnerID=8YFLogxK

U2 - 10.1585/pfr.9.3406098

DO - 10.1585/pfr.9.3406098

M3 - Article

AN - SCOPUS:84945277089

VL - 9

JO - Plasma and Fusion Research

JF - Plasma and Fusion Research

SN - 1880-6821

IS - SpecialIssue2

M1 - 3406098

ER -