Current profile control by alternating current magnetic helicity injection

F. Ebrahimi, Stewart C. Prager

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The current profile control by alternating current (ac) magnetic helicity injection in a reversed field pinch (RFP) was analyzed. The oscillating field current drive (OFCD), which is a form of ac magnetic helicity injection, was used in the study that employed 3-d resistive magnetohydrodynamic (MHD) computation. It was observed that OFCD could control the current density profile in an oscillatory steady-state, leading to a significant reduction in magnetic fluctuations. The OFCD current profile control was also found to inject magnetic helicity over a cycle and sustained a portion of the total plasma current.

Original languageEnglish (US)
Pages (from-to)2014-2025
Number of pages12
JournalPhysics of Plasmas
Volume11
Issue number5 PART 1
DOIs
StatePublished - May 1 2004
Externally publishedYes

Fingerprint

alternating current
injection
profiles
plasma currents
magnetohydrodynamics
current density
cycles

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

Cite this

@article{e37ea55612464bf2b7a2c79ae460e52a,
title = "Current profile control by alternating current magnetic helicity injection",
abstract = "The current profile control by alternating current (ac) magnetic helicity injection in a reversed field pinch (RFP) was analyzed. The oscillating field current drive (OFCD), which is a form of ac magnetic helicity injection, was used in the study that employed 3-d resistive magnetohydrodynamic (MHD) computation. It was observed that OFCD could control the current density profile in an oscillatory steady-state, leading to a significant reduction in magnetic fluctuations. The OFCD current profile control was also found to inject magnetic helicity over a cycle and sustained a portion of the total plasma current.",
author = "F. Ebrahimi and Prager, {Stewart C.}",
year = "2004",
month = "5",
day = "1",
doi = "https://doi.org/10.1063/1.1690304",
language = "English (US)",
volume = "11",
pages = "2014--2025",
journal = "Physics of Plasmas",
issn = "1070-664X",
publisher = "American Institute of Physics Publising LLC",
number = "5 PART 1",

}

Current profile control by alternating current magnetic helicity injection. / Ebrahimi, F.; Prager, Stewart C.

In: Physics of Plasmas, Vol. 11, No. 5 PART 1, 01.05.2004, p. 2014-2025.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Current profile control by alternating current magnetic helicity injection

AU - Ebrahimi, F.

AU - Prager, Stewart C.

PY - 2004/5/1

Y1 - 2004/5/1

N2 - The current profile control by alternating current (ac) magnetic helicity injection in a reversed field pinch (RFP) was analyzed. The oscillating field current drive (OFCD), which is a form of ac magnetic helicity injection, was used in the study that employed 3-d resistive magnetohydrodynamic (MHD) computation. It was observed that OFCD could control the current density profile in an oscillatory steady-state, leading to a significant reduction in magnetic fluctuations. The OFCD current profile control was also found to inject magnetic helicity over a cycle and sustained a portion of the total plasma current.

AB - The current profile control by alternating current (ac) magnetic helicity injection in a reversed field pinch (RFP) was analyzed. The oscillating field current drive (OFCD), which is a form of ac magnetic helicity injection, was used in the study that employed 3-d resistive magnetohydrodynamic (MHD) computation. It was observed that OFCD could control the current density profile in an oscillatory steady-state, leading to a significant reduction in magnetic fluctuations. The OFCD current profile control was also found to inject magnetic helicity over a cycle and sustained a portion of the total plasma current.

UR - http://www.scopus.com/inward/record.url?scp=2942520095&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=2942520095&partnerID=8YFLogxK

U2 - https://doi.org/10.1063/1.1690304

DO - https://doi.org/10.1063/1.1690304

M3 - Article

VL - 11

SP - 2014

EP - 2025

JO - Physics of Plasmas

JF - Physics of Plasmas

SN - 1070-664X

IS - 5 PART 1

ER -