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Title: Reaching High Poloidal Beta at Greenwald Density with Internal Transport Barrier Close to Full Noninductive Current Drive

Abstract

In the ASDEX Upgrade tokamak, high poloidal beta up to {beta}{sub pol}=3 at the Greenwald density with H-mode confinement has been reached. Because of the high beta, the plasma current is driven almost fully noninductively, consisting of 51% bootstrap and 43% neutral beam driven current. To reach these conditions the discharge is operated at low plasma current (I{sub P}=400 kA ) and high neutral beam heating power (P{sub NBI}=10 MW ). The discharge combines an edge (H mode) and internal transport barrier at high densities without confinement-limiting MHD activities. The extrapolation to higher plasma currents may offer a promising way for an advanced scenario based fusion reactor.

Authors:
; ; ; ; ; ; ; ; ;  [1]
  1. and others
Publication Date:
Sponsoring Org.:
(US)
OSTI Identifier:
40231000
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 87; Journal Issue: 8; Other Information: DOI: 10.1103/PhysRevLett.87.085002; Othernumber: PRLTAO000087000008085002000001; 050134PRL; PBD: 20 Aug 2001; Journal ID: ISSN 0031-9007
Publisher:
The American Physical Society
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; CONFINEMENT; EXTRAPOLATION; HEATING; PLASMA; THERMONUCLEAR REACTORS; TRANSPORT

Citation Formats

Hobirk, J, Wolf, R C, Gruber, O, Gude, A, Guenter, S, Kurzan, B, Maraschek, M, McCarthy, P J, Meister, H, and Peeters, A G. Reaching High Poloidal Beta at Greenwald Density with Internal Transport Barrier Close to Full Noninductive Current Drive. United States: N. p., 2001. Web. doi:10.1103/PhysRevLett.87.085002.
Hobirk, J, Wolf, R C, Gruber, O, Gude, A, Guenter, S, Kurzan, B, Maraschek, M, McCarthy, P J, Meister, H, & Peeters, A G. Reaching High Poloidal Beta at Greenwald Density with Internal Transport Barrier Close to Full Noninductive Current Drive. United States. https://doi.org/10.1103/PhysRevLett.87.085002
Hobirk, J, Wolf, R C, Gruber, O, Gude, A, Guenter, S, Kurzan, B, Maraschek, M, McCarthy, P J, Meister, H, and Peeters, A G. 2001. "Reaching High Poloidal Beta at Greenwald Density with Internal Transport Barrier Close to Full Noninductive Current Drive". United States. https://doi.org/10.1103/PhysRevLett.87.085002.
@article{osti_40231000,
title = {Reaching High Poloidal Beta at Greenwald Density with Internal Transport Barrier Close to Full Noninductive Current Drive},
author = {Hobirk, J and Wolf, R C and Gruber, O and Gude, A and Guenter, S and Kurzan, B and Maraschek, M and McCarthy, P J and Meister, H and Peeters, A G},
abstractNote = {In the ASDEX Upgrade tokamak, high poloidal beta up to {beta}{sub pol}=3 at the Greenwald density with H-mode confinement has been reached. Because of the high beta, the plasma current is driven almost fully noninductively, consisting of 51% bootstrap and 43% neutral beam driven current. To reach these conditions the discharge is operated at low plasma current (I{sub P}=400 kA ) and high neutral beam heating power (P{sub NBI}=10 MW ). The discharge combines an edge (H mode) and internal transport barrier at high densities without confinement-limiting MHD activities. The extrapolation to higher plasma currents may offer a promising way for an advanced scenario based fusion reactor.},
doi = {10.1103/PhysRevLett.87.085002},
url = {https://www.osti.gov/biblio/40231000}, journal = {Physical Review Letters},
issn = {0031-9007},
number = 8,
volume = 87,
place = {United States},
year = {Mon Aug 20 00:00:00 EDT 2001},
month = {Mon Aug 20 00:00:00 EDT 2001}
}