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

C. Suzuki; K. Ida; A. Fujisawa; A. Shimizu; S. Okamura; S. Nishimura; M. Isobe; I. Nomura; K. Matsuoka

doi:10.1088/0741-3335/44/5A/321

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

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

Research output: Contribution to journal › Conference article › peer-review

5 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 language	English
Article number	321
Pages (from-to)	A225-A230
Journal	Plasma Physics and Controlled Fusion
Volume	44
Issue number	5 A
DOIs	https://doi.org/10.1088/0741-3335/44/5A/321
Publication status	Published - May 2002
Externally published	Yes
Event	8th IAEA Technical Committee Meeting on H-Mode Physics and Transport Barriers - Toki, Japan Duration: Sept 5 2001 → Sept 7 2001

All Science Journal Classification (ASJC) codes

Nuclear Energy and Engineering
Condensed Matter Physics

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

Cite this

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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 A. Fujisawa and A. Shimizu and S. Okamura and S. Nishimura and M. Isobe and I. Nomura and K. Matsuoka",

year = "2002",

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doi = "10.1088/0741-3335/44/5A/321",

language = "English",

volume = "44",

pages = "A225--A230",

journal = "Plasma Physics and Controlled Fusion",

issn = "0741-3335",

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number = "5 A",

note = "8th IAEA Technical Committee Meeting on H-Mode Physics and Transport Barriers ; Conference date: 05-09-2001 Through 07-09-2001",

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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, A.

AU - Shimizu, A.

AU - Okamura, S.

AU - Nishimura, S.

AU - Isobe, M.

AU - Nomura, I.

AU - Matsuoka, K.

PY - 2002/5

Y1 - 2002/5

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.

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

M3 - Conference article

AN - SCOPUS:0036573408

SN - 0741-3335

VL - 44

SP - A225-A230

JO - Plasma Physics and Controlled Fusion

JF - Plasma Physics and Controlled Fusion

IS - 5 A

M1 - 321

T2 - 8th IAEA Technical Committee Meeting on H-Mode Physics and Transport Barriers

Y2 - 5 September 2001 through 7 September 2001

ER -

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

Abstract

All Science Journal Classification (ASJC) codes

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