Magnetic field structure preferable to E × B shear flow generation in a quasi-axisymmetric stellarator CHS-qa

C. Suzuki, K. Ida, akihide fujisawa, A. Shimizu, S. Okamura, S. Nishimura, M. Isobe, I. Nomura, K. Matsuoka

Research output: Contribution to journalConference article

4 Citations (Scopus)

Abstract

Viscous damping and effective helical ripple have been quantitatively estimated for a proposed quasi-axisymmetric stellarator CHS-qa configuration. It is predicted that viscous damping against plasma flow in CHS-qa is low enough to sustain large E × B shear as observed in the H-modes and internal transport barriers in many tokamaks. Effective helical ripple in CHS-qa is adjusted to be on the order of 10-2 or lower, which is suitable to trigger transport barriers due to non-ambipolar neoclassical fluxes peculiar to conventional helical devices. For experimental flexibility, viscous damping and effective helical ripple in CHS-qa can be extensively controlled over a range of about one order by modifying modular coil currents.

Original languageEnglish
JournalPlasma Physics and Controlled Fusion
Volume44
Issue number5 A
DOIs
Publication statusPublished - Jan 1 2002
Externally publishedYes
Event8th IAEA Technical Committee Meeting on H-Mode Physics and Transport Barriers - Toki, Japan
Duration: Sep 5 2001Sep 7 2001

Fingerprint

viscous damping
stellarators
Shear flow
ripples
shear flow
Damping
Magnetic fields
magnetic fields
Plasma flow
magnetohydrodynamic flow
flexibility
coils
actuators
Fluxes
shear
configurations

All Science Journal Classification (ASJC) codes

  • Nuclear Energy and Engineering
  • Condensed Matter Physics

Cite this

Magnetic field structure preferable to E × B shear flow generation in a quasi-axisymmetric stellarator CHS-qa. / Suzuki, C.; Ida, K.; fujisawa, akihide; Shimizu, A.; Okamura, S.; Nishimura, S.; Isobe, M.; Nomura, I.; Matsuoka, K.

In: Plasma Physics and Controlled Fusion, Vol. 44, No. 5 A, 01.01.2002.

Research output: Contribution to journalConference article

Suzuki, C. ; Ida, K. ; fujisawa, akihide ; Shimizu, A. ; Okamura, S. ; Nishimura, S. ; Isobe, M. ; Nomura, I. ; Matsuoka, K. / Magnetic field structure preferable to E × B shear flow generation in a quasi-axisymmetric stellarator CHS-qa. In: Plasma Physics and Controlled Fusion. 2002 ; Vol. 44, No. 5 A.
@article{91592c1a9d8042a79ba9e82a24ac1de3,
title = "Magnetic field structure preferable to E × B shear flow generation in a quasi-axisymmetric stellarator CHS-qa",
abstract = "Viscous damping and effective helical ripple have been quantitatively estimated for a proposed quasi-axisymmetric stellarator CHS-qa configuration. It is predicted that viscous damping against plasma flow in CHS-qa is low enough to sustain large E × B shear as observed in the H-modes and internal transport barriers in many tokamaks. Effective helical ripple in CHS-qa is adjusted to be on the order of 10-2 or lower, which is suitable to trigger transport barriers due to non-ambipolar neoclassical fluxes peculiar to conventional helical devices. For experimental flexibility, viscous damping and effective helical ripple in CHS-qa can be extensively controlled over a range of about one order by modifying modular coil currents.",
author = "C. Suzuki and K. Ida and akihide fujisawa and A. Shimizu and S. Okamura and S. Nishimura and M. Isobe and I. Nomura and K. Matsuoka",
year = "2002",
month = "1",
day = "1",
doi = "10.1088/0741-3335/44/5A/321",
language = "English",
volume = "44",
journal = "Plasma Physics and Controlled Fusion",
issn = "0741-3335",
publisher = "IOP Publishing Ltd.",
number = "5 A",

}

TY - JOUR

T1 - Magnetic field structure preferable to E × B shear flow generation in a quasi-axisymmetric stellarator CHS-qa

AU - Suzuki, C.

AU - Ida, K.

AU - fujisawa, akihide

AU - Shimizu, A.

AU - Okamura, S.

AU - Nishimura, S.

AU - Isobe, M.

AU - Nomura, I.

AU - Matsuoka, K.

PY - 2002/1/1

Y1 - 2002/1/1

N2 - Viscous damping and effective helical ripple have been quantitatively estimated for a proposed quasi-axisymmetric stellarator CHS-qa configuration. It is predicted that viscous damping against plasma flow in CHS-qa is low enough to sustain large E × B shear as observed in the H-modes and internal transport barriers in many tokamaks. Effective helical ripple in CHS-qa is adjusted to be on the order of 10-2 or lower, which is suitable to trigger transport barriers due to non-ambipolar neoclassical fluxes peculiar to conventional helical devices. For experimental flexibility, viscous damping and effective helical ripple in CHS-qa can be extensively controlled over a range of about one order by modifying modular coil currents.

AB - Viscous damping and effective helical ripple have been quantitatively estimated for a proposed quasi-axisymmetric stellarator CHS-qa configuration. It is predicted that viscous damping against plasma flow in CHS-qa is low enough to sustain large E × B shear as observed in the H-modes and internal transport barriers in many tokamaks. Effective helical ripple in CHS-qa is adjusted to be on the order of 10-2 or lower, which is suitable to trigger transport barriers due to non-ambipolar neoclassical fluxes peculiar to conventional helical devices. For experimental flexibility, viscous damping and effective helical ripple in CHS-qa can be extensively controlled over a range of about one order by modifying modular coil currents.

UR - http://www.scopus.com/inward/record.url?scp=0036573408&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0036573408&partnerID=8YFLogxK

U2 - 10.1088/0741-3335/44/5A/321

DO - 10.1088/0741-3335/44/5A/321

M3 - Conference article

AN - SCOPUS:0036573408

VL - 44

JO - Plasma Physics and Controlled Fusion

JF - Plasma Physics and Controlled Fusion

SN - 0741-3335

IS - 5 A

ER -