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

Institute of Space and Plasma Sciences

Research output: Contribution to journal › Article

32 Citations (Scopus)

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
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
Publication status	Published - 2004 May 1

Fingerprint

All Science Journal Classification (ASJC) codes

Condensed Matter Physics

Cite this

Gorelenkov, N. N., Belova, E., Berk, H. L., Cheng, C. Z., Fredrickson, E., Heidbrink, W. W., Kaye, S., & Kramer, G. J. (2004). Beam ion driven instabilities in the national spherical tokamak experiment. Physics of Plasmas, 11(5 PART 2), 2586-2593. https://doi.org/10.1063/1.1689667

@article{a6f3a793930c452a93fab0103302ea39,

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

day = "1",

doi = "10.1063/1.1689667",

language = "English",

volume = "11",

pages = "2586--2593",

journal = "Physics of Plasmas",

issn = "1070-664X",

publisher = "American Institute of Physics Publising LLC",

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 - 2004/5/1

Y1 - 2004/5/1

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 - http://www.scopus.com/inward/record.url?scp=2942573086&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=2942573086&partnerID=8YFLogxK

U2 - 10.1063/1.1689667

DO - 10.1063/1.1689667

M3 - Article

AN - SCOPUS:2942573086

VL - 11

SP - 2586

EP - 2593

JO - Physics of Plasmas

JF - Physics of Plasmas

SN - 1070-664X

IS - 5 PART 2

ER -

Access to Document

10.1063/1.1689667