Self organization of high βp plasma equilibrium with an inboard poloidal magnetic field null in QUEST

Kishore Mishra, H. Zushi, Hiroshi Idei, Makoto Hasegawa, Takumi Onchi, S. Tashima, S. Banerjee, H. Hanada, H. Togashi, T. Yamaguchi, A. Ejiri, Y. Takase, K. Nakamura, akihide fujisawa, Yoshihiko Nagashima, A. Kuzmin

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Successful production of high βp plasmas (εβp 1) fully non-inductively (NI) and their long pulse sustainment with the help of modest power (<100 kW) of electron cyclotron waves is demonstrated. High βp plasmas are found for the first time to be naturally self organized to form a stable natural inboard poloidal field null (IPN) equilibrium. A critical βp value is identified, which defines the transition boundary from inboard limiter (IL) to IPN equilibrium. A new feature of plasma self organization is evidenced, which enhances its negative triangular shape to sustain high βp. These results show a relatively simple method to produce and sustain high βp plasma close to the equilibrium limit in a stable configuration exploiting its self organization property.

Original languageEnglish
Article number083009
JournalNuclear Fusion
Volume55
Issue number8
DOIs
Publication statusPublished - Aug 1 2015

Fingerprint

plasma equilibrium
magnetic fields
cyclotrons
configurations
pulses
electrons

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Condensed Matter Physics

Cite this

Self organization of high βp plasma equilibrium with an inboard poloidal magnetic field null in QUEST. / Mishra, Kishore; Zushi, H.; Idei, Hiroshi; Hasegawa, Makoto; Onchi, Takumi; Tashima, S.; Banerjee, S.; Hanada, H.; Togashi, H.; Yamaguchi, T.; Ejiri, A.; Takase, Y.; Nakamura, K.; fujisawa, akihide; Nagashima, Yoshihiko; Kuzmin, A.

In: Nuclear Fusion, Vol. 55, No. 8, 083009, 01.08.2015.

Research output: Contribution to journalArticle

Mishra, K, Zushi, H, Idei, H, Hasegawa, M, Onchi, T, Tashima, S, Banerjee, S, Hanada, H, Togashi, H, Yamaguchi, T, Ejiri, A, Takase, Y, Nakamura, K, fujisawa, A, Nagashima, Y & Kuzmin, A 2015, 'Self organization of high βp plasma equilibrium with an inboard poloidal magnetic field null in QUEST', Nuclear Fusion, vol. 55, no. 8, 083009. https://doi.org/10.1088/0029-5515/55/8/083009
Mishra, Kishore ; Zushi, H. ; Idei, Hiroshi ; Hasegawa, Makoto ; Onchi, Takumi ; Tashima, S. ; Banerjee, S. ; Hanada, H. ; Togashi, H. ; Yamaguchi, T. ; Ejiri, A. ; Takase, Y. ; Nakamura, K. ; fujisawa, akihide ; Nagashima, Yoshihiko ; Kuzmin, A. / Self organization of high βp plasma equilibrium with an inboard poloidal magnetic field null in QUEST. In: Nuclear Fusion. 2015 ; Vol. 55, No. 8.
@article{98e967a4d5274699806da37bf9d63fe7,
title = "Self organization of high βp plasma equilibrium with an inboard poloidal magnetic field null in QUEST",
abstract = "Successful production of high βp plasmas (εβp 1) fully non-inductively (NI) and their long pulse sustainment with the help of modest power (<100 kW) of electron cyclotron waves is demonstrated. High βp plasmas are found for the first time to be naturally self organized to form a stable natural inboard poloidal field null (IPN) equilibrium. A critical βp value is identified, which defines the transition boundary from inboard limiter (IL) to IPN equilibrium. A new feature of plasma self organization is evidenced, which enhances its negative triangular shape to sustain high βp. These results show a relatively simple method to produce and sustain high βp plasma close to the equilibrium limit in a stable configuration exploiting its self organization property.",
author = "Kishore Mishra and H. Zushi and Hiroshi Idei and Makoto Hasegawa and Takumi Onchi and S. Tashima and S. Banerjee and H. Hanada and H. Togashi and T. Yamaguchi and A. Ejiri and Y. Takase and K. Nakamura and akihide fujisawa and Yoshihiko Nagashima and A. Kuzmin",
year = "2015",
month = "8",
day = "1",
doi = "10.1088/0029-5515/55/8/083009",
language = "English",
volume = "55",
journal = "Nuclear Fusion",
issn = "0029-5515",
publisher = "IOP Publishing Ltd.",
number = "8",

}

TY - JOUR

T1 - Self organization of high βp plasma equilibrium with an inboard poloidal magnetic field null in QUEST

AU - Mishra, Kishore

AU - Zushi, H.

AU - Idei, Hiroshi

AU - Hasegawa, Makoto

AU - Onchi, Takumi

AU - Tashima, S.

AU - Banerjee, S.

AU - Hanada, H.

AU - Togashi, H.

AU - Yamaguchi, T.

AU - Ejiri, A.

AU - Takase, Y.

AU - Nakamura, K.

AU - fujisawa, akihide

AU - Nagashima, Yoshihiko

AU - Kuzmin, A.

PY - 2015/8/1

Y1 - 2015/8/1

N2 - Successful production of high βp plasmas (εβp 1) fully non-inductively (NI) and their long pulse sustainment with the help of modest power (<100 kW) of electron cyclotron waves is demonstrated. High βp plasmas are found for the first time to be naturally self organized to form a stable natural inboard poloidal field null (IPN) equilibrium. A critical βp value is identified, which defines the transition boundary from inboard limiter (IL) to IPN equilibrium. A new feature of plasma self organization is evidenced, which enhances its negative triangular shape to sustain high βp. These results show a relatively simple method to produce and sustain high βp plasma close to the equilibrium limit in a stable configuration exploiting its self organization property.

AB - Successful production of high βp plasmas (εβp 1) fully non-inductively (NI) and their long pulse sustainment with the help of modest power (<100 kW) of electron cyclotron waves is demonstrated. High βp plasmas are found for the first time to be naturally self organized to form a stable natural inboard poloidal field null (IPN) equilibrium. A critical βp value is identified, which defines the transition boundary from inboard limiter (IL) to IPN equilibrium. A new feature of plasma self organization is evidenced, which enhances its negative triangular shape to sustain high βp. These results show a relatively simple method to produce and sustain high βp plasma close to the equilibrium limit in a stable configuration exploiting its self organization property.

UR - http://www.scopus.com/inward/record.url?scp=84938704714&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84938704714&partnerID=8YFLogxK

U2 - 10.1088/0029-5515/55/8/083009

DO - 10.1088/0029-5515/55/8/083009

M3 - Article

VL - 55

JO - Nuclear Fusion

JF - Nuclear Fusion

SN - 0029-5515

IS - 8

M1 - 083009

ER -