CNR Institutional Research Information System

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.

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

Figini L;Schmuck S;Senni L;Sozzi C;
2023

Abstract

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.
2023
Istituto per la Scienza e Tecnologia dei Plasmi - ISTP
Inglese
21st joint workshop on electron cyclotron emission (ECE) and electron cyclotron resonance heating (ECRH)
277
03005-1
03005-6
6
https://www.epj-conferences.org/articles/epjconf/abs/2023/03/epjconf_ec212023_03005/epjconf_ec212023_03005.html
EDP Sciences
Les Ulis Cedex
FRANCIA
20-24 June 2022
Saint-Paul-lez-Durance, France
non-Maxwellian electron
ECE data
JET discharges
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0/). This work has been carried out within the framework of the EUROfusion Consortium and has received funding from the Euratom research and training programme 2014-2018 and 2019-2020 under grant agreement No 633053.
WOS:001006603800026
1
23
open
Giruzzi, G; Fontana, M; Orsitto, Fp; de la Luna, E; Dumont, R; Figini, L; Maslov, M; Mazzi, S; Schmuck, S; Senni, L; Sozzi, C; Challis, C; Frigione, D...espandi
273
info:eu-repo/semantics/conferenceObject
04 Contributo in convegno::04.01 Contributo in Atti di convegno
   Implementation of activities described in the Roadmap to Fusion during Horizon 2020 through a Joint programme of the members of the EUROfusion consortium
   EUROfusion
   H2020
   633053
04.01 Contributo in Atti di convegno
File in questo prodotto:
File Dimensione Formato  
prod_478864-doc_196293.pdf

accesso aperto

Descrizione: Proceeding A model of non-Maxwellian electron distribution function for the analysis of ECE data in JET discharges
Tipologia: Versione Editoriale (PDF)
Dimensione 1.39 MB
Formato Adobe PDF
Visualizza/Apri
1.39 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.14243/437165
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? 3
social impact