A model of non-Maxwellian electron distribution function for the analysis of ECE data in JET discharges

被引：1

作者：

Giruzzi, G. ^{[1
]}

Fontana, M. ^{[2
]}

Orsitto, F. P. ^{[3
]}

de la Luna, E. ^{[4
]}

Dumont, R. ^{[1
]}

Figini, L. ^{[5
]}

Maslov, M. ^{[2
]}

Mazzi, S. ^{[6
]}

Schmuck, S. ^{[5
]}

Senni, L. ^{[3
]}

Sozzi, C. ^{[5
]}

Challis, C. ^{[2
]}

Frigione, D. ^{[3
]}

Garcia, J. ^{[1
]}

Garzotti, L. ^{[2
]}

Hobirk, J. ^{[7
]}

Kappatou, A. ^{[7
]}

Keeling, D. ^{[2
]}

Lerche, E. ^{[2
]}

Maggi, C. ^{[2
]}

Mailloux, J. ^{[2
]}

Rimini, F. ^{[2
]}

Van Eester, D. ^{[8
]}

机构：

[1] CEA, IRFM, F-13108 St Paul Les Durance, France

[2] United Kingdom Atom Energy Author, Culham Ctr Fus Energy, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England

[3] CR Frascati, ENEA Dept Fus & Technol Nucl Safety, I-00044 Frascati, Italy

[4] CIEMAT, Natl Fus Lab, Madrid, Spain

[5] CNR, Ist Sci & Tecnol Plasmi, I-20125 Milan, Italy

[6] Ecole Polytech Fed Lausanne, Swiss Plasma Ctr, CH-1015 Lausanne, Switzerland

[7] Max Planck Inst Plasma Phys, D-85748 Garching, Germany

[8] LPP ERM KMS, Plasma Phys Lab, Brussels, Belgium

来源：

21ST JOINT WORKSHOP ON ELECTRON CYCLOTRON EMISSION AND ELECTRON CYCLOTRON RESONANCE HEATING, EC21 | 2023年 / 277卷

关键词：

CYCLOTRON EMISSION;

D O I：

10.1051/epjconf/202327703005

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

Recent experiments performed in JET at high level of plasma heating, in preparation of, and during the DT campaign have shown significant discrepancies between electron temperature measurements by Thomson Scattering (TS) and Electron Cyclotron Emission (ECE). In order to perform a systematic analysis of this phenomenon, a simple model of bipolar distortion of the electron distribution function has been developed, allowing analytic calculation of the EC emission and absorption coefficients. Extensive comparisons of the modelled ECE spectra (at both the 2nd and the 3rd harmonic extraordinary mode) with experimental measurements display good agreement when bulk electron distribution distortions around 1-2 times the electron thermal velocity are used and prove useful for a first level of analysis of this effect.

引用

页数：6

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