Study of the β dependence of confinement and heat transport in ASDEX upgrade

L. Vermare; F. Ryter; C. Angioni; A. G. Peeters; J. Stober; R. Bilato; L. D. Horton; B. Kurzan; C. F. Maggi; H. Meister; J. Schirmer; G. Tardini

doi:10.1088/0029-5515/47/5/014

Study of the β dependence of confinement and heat transport in ASDEX upgrade

L. Vermare
, F. Ryter
, C. Angioni
, A. G. Peeters
, J. Stober
, R. Bilato
, L. D. Horton
, B. Kurzan
, C. F. Maggi
, H. Meister
, J. Schirmer
, G. Tardini

Max-Planck-Institut für Plasmaphysik

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

29 Citations (Scopus)

Abstract

First β scan experiments have been made in ASDEX Upgrade in H-mode plasmas with type-I ELMs. Two sets of discharges, performed in different density ranges, scan β between β_N = (1.4-2.2) and β_N = (1.4-2). Global analysis of these dedicated experiments exhibits a strong unfavourable β scaling as Bτ_th ∝ β^-0.9. This tendency is confirmed by a local analysis which shows an increase in the thermal heat diffusivity with increasing β as χ_eff/B ∝ β^0.65. These results are discussed and compared with studies made in DIII-D, JET and JT-60U.

Original language	English
Pages (from-to)	490-497
Number of pages	8
Journal	Nuclear Fusion
Volume	47
Issue number	5
DOIs	https://doi.org/10.1088/0029-5515/47/5/014
Publication status	Published - 1 Dec 2007
Externally published	Yes

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title = "Study of the β dependence of confinement and heat transport in ASDEX upgrade",

abstract = "First β scan experiments have been made in ASDEX Upgrade in H-mode plasmas with type-I ELMs. Two sets of discharges, performed in different density ranges, scan β between βN = (1.4-2.2) and βN = (1.4-2). Global analysis of these dedicated experiments exhibits a strong unfavourable β scaling as Bτth ∝ β-0.9. This tendency is confirmed by a local analysis which shows an increase in the thermal heat diffusivity with increasing β as χeff/B ∝ β0.65. These results are discussed and compared with studies made in DIII-D, JET and JT-60U.",

author = "L. Vermare and F. Ryter and C. Angioni and Peeters, \{A. G.\} and J. Stober and R. Bilato and Horton, \{L. D.\} and B. Kurzan and Maggi, \{C. F.\} and H. Meister and J. Schirmer and G. Tardini",

year = "2007",

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doi = "10.1088/0029-5515/47/5/014",

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TY - JOUR

T1 - Study of the β dependence of confinement and heat transport in ASDEX upgrade

AU - Vermare, L.

AU - Ryter, F.

AU - Angioni, C.

AU - Peeters, A. G.

AU - Stober, J.

AU - Bilato, R.

AU - Horton, L. D.

AU - Kurzan, B.

AU - Maggi, C. F.

AU - Meister, H.

AU - Schirmer, J.

AU - Tardini, G.

PY - 2007/12/1

Y1 - 2007/12/1

N2 - First β scan experiments have been made in ASDEX Upgrade in H-mode plasmas with type-I ELMs. Two sets of discharges, performed in different density ranges, scan β between βN = (1.4-2.2) and βN = (1.4-2). Global analysis of these dedicated experiments exhibits a strong unfavourable β scaling as Bτth ∝ β-0.9. This tendency is confirmed by a local analysis which shows an increase in the thermal heat diffusivity with increasing β as χeff/B ∝ β0.65. These results are discussed and compared with studies made in DIII-D, JET and JT-60U.

AB - First β scan experiments have been made in ASDEX Upgrade in H-mode plasmas with type-I ELMs. Two sets of discharges, performed in different density ranges, scan β between βN = (1.4-2.2) and βN = (1.4-2). Global analysis of these dedicated experiments exhibits a strong unfavourable β scaling as Bτth ∝ β-0.9. This tendency is confirmed by a local analysis which shows an increase in the thermal heat diffusivity with increasing β as χeff/B ∝ β0.65. These results are discussed and compared with studies made in DIII-D, JET and JT-60U.

U2 - 10.1088/0029-5515/47/5/014

DO - 10.1088/0029-5515/47/5/014

M3 - Article

AN - SCOPUS:34547439912

SN - 0029-5515

VL - 47

SP - 490

EP - 497

JO - Nuclear Fusion

JF - Nuclear Fusion

IS - 5

ER -

Study of the β dependence of confinement and heat transport in ASDEX upgrade

Abstract

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