Beam ion driven instabilities in the national spherical tokamak experiment

N. N. Gorelenkov; E. Belova; H. L. Berk; C. Z. Cheng; E. Fredrickson; W. W. Heidbrink; S. Kaye; G. J. Kramer

doi:10.1063/1.1689667

Beam ion driven instabilities in the national spherical tokamak experiment

N. N. Gorelenkov
, E. Belova
, H. L. Berk
, C. Z. Cheng
, E. Fredrickson
, W. W. Heidbrink
, S. Kaye
, G. J. Kramer

Research output: Contribution to journal › Article › peer-review

38 Scopus citations

Abstract

Low and high frequency beam ion driven instabilities in the National Spherical Tokamak Experiment (NSTX) plasma were analyzed. Low frequency magnetohydrodynamics (MHD) activities in ∼100 kHz frequency range on NSTX were often observed and identified as the TAEs driven by beam ions. It was shown that there was a large uncertainty in the experimental plasma parameters upon which the numerical model was based for the low-n TAE instabilities. The analysis helps to validate the NOVA/NOVA-K predictions that TAEs will be unstable in ITER if driven by fusion alphas in a plasma with T _i0>20 KeV.

Original language	English (US)
Pages (from-to)	2586-2593
Number of pages	8
Journal	Physics of Plasmas
Volume	11
Issue number	5 PART 2
DOIs	https://doi.org/10.1063/1.1689667
State	Published - May 2004

All Science Journal Classification (ASJC) codes

Condensed Matter Physics

Access to Document

10.1063/1.1689667

Cite this

@article{3c467cdba5cf4c08b3e78b8bc8778f0a,

title = "Beam ion driven instabilities in the national spherical tokamak experiment",

abstract = "Low and high frequency beam ion driven instabilities in the National Spherical Tokamak Experiment (NSTX) plasma were analyzed. Low frequency magnetohydrodynamics (MHD) activities in ∼100 kHz frequency range on NSTX were often observed and identified as the TAEs driven by beam ions. It was shown that there was a large uncertainty in the experimental plasma parameters upon which the numerical model was based for the low-n TAE instabilities. The analysis helps to validate the NOVA/NOVA-K predictions that TAEs will be unstable in ITER if driven by fusion alphas in a plasma with T i0>20 KeV.",

author = "Gorelenkov, \{N. N.\} and E. Belova and Berk, \{H. L.\} and Cheng, \{C. Z.\} and E. Fredrickson and Heidbrink, \{W. W.\} and S. Kaye and Kramer, \{G. J.\}",

year = "2004",

month = may,

doi = "10.1063/1.1689667",

language = "English (US)",

volume = "11",

pages = "2586--2593",

journal = "Physics of Plasmas",

issn = "1070-664X",

publisher = "American Institute of Physics",

number = "5 PART 2",

}

TY - JOUR

T1 - Beam ion driven instabilities in the national spherical tokamak experiment

AU - Gorelenkov, N. N.

AU - Belova, E.

AU - Berk, H. L.

AU - Cheng, C. Z.

AU - Fredrickson, E.

AU - Heidbrink, W. W.

AU - Kaye, S.

AU - Kramer, G. J.

PY - 2004/5

Y1 - 2004/5

N2 - Low and high frequency beam ion driven instabilities in the National Spherical Tokamak Experiment (NSTX) plasma were analyzed. Low frequency magnetohydrodynamics (MHD) activities in ∼100 kHz frequency range on NSTX were often observed and identified as the TAEs driven by beam ions. It was shown that there was a large uncertainty in the experimental plasma parameters upon which the numerical model was based for the low-n TAE instabilities. The analysis helps to validate the NOVA/NOVA-K predictions that TAEs will be unstable in ITER if driven by fusion alphas in a plasma with T i0>20 KeV.

AB - Low and high frequency beam ion driven instabilities in the National Spherical Tokamak Experiment (NSTX) plasma were analyzed. Low frequency magnetohydrodynamics (MHD) activities in ∼100 kHz frequency range on NSTX were often observed and identified as the TAEs driven by beam ions. It was shown that there was a large uncertainty in the experimental plasma parameters upon which the numerical model was based for the low-n TAE instabilities. The analysis helps to validate the NOVA/NOVA-K predictions that TAEs will be unstable in ITER if driven by fusion alphas in a plasma with T i0>20 KeV.

UR - https://www.scopus.com/pages/publications/2942573086

UR - https://www.scopus.com/pages/publications/2942573086#tab=citedBy

U2 - 10.1063/1.1689667

DO - 10.1063/1.1689667

M3 - Article

AN - SCOPUS:2942573086

SN - 1070-664X

VL - 11

SP - 2586

EP - 2593

JO - Physics of Plasmas

JF - Physics of Plasmas

IS - 5 PART 2

ER -

Beam ion driven instabilities in the national spherical tokamak experiment

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this