Runaway electron experiments at COMPASS in support of the EUROfusion ITER physics research

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F19%3A00498244" target="_blank" >RIV/61389021:_____/19:00498244 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21230/19:00326946 RIV/68407700:21340/19:00326946 RIV/00216208:11320/19:10396111

Výsledek na webu

<a href="https://iopscience.iop.org/article/10.1088/1361-6587/aae04a" target="_blank" >https://iopscience.iop.org/article/10.1088/1361-6587/aae04a</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1361-6587/aae04a" target="_blank" >10.1088/1361-6587/aae04a</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Runaway electron experiments at COMPASS in support of the EUROfusion ITER physics research

Popis výsledku v původním jazyce

The role of the COMPASS tokamak in research of generation, confinement and losses of runaway electron (RE) population is presented. Recently, two major groups of experiments aimed at improved understanding and control of the REs have been pursued. First, the effects of the massive gas injection (similar to 10(21) Ar/Ne particles) and impurity seeding (similar to 10(18) particles) were studied systematically. The observed phenomena include generation of the post-disruption RE beam and current conversion from plasma to RE. Zero loop voltage control was implemented in order to study the decay in simplified conditions. A distinctive drop of background plasma temperature and electron density was observed following an additional deuterium injection into the RE beam. With the loop voltage control the parametric dependence of the current decay rate dJ/dt can be studied systematically and possibly extrapolated to larger facilities. Second, recent results of experiments focused on the role of the magnetic field in physics of RE were analysed. In this contribution, special attention is given to the observed effects of the resonant magnetic perturbation on the RE population. The benefits of the RE experiments on COMPASS was reinforced by diagnostic enhancements (fast cameras, Cherenkov detector, vertical ECE etc) and modelling efforts (in particular, coupling of the METIS and LUKE codes).

Název v anglickém jazyce

Runaway electron experiments at COMPASS in support of the EUROfusion ITER physics research

Popis výsledku anglicky

The role of the COMPASS tokamak in research of generation, confinement and losses of runaway electron (RE) population is presented. Recently, two major groups of experiments aimed at improved understanding and control of the REs have been pursued. First, the effects of the massive gas injection (similar to 10(21) Ar/Ne particles) and impurity seeding (similar to 10(18) particles) were studied systematically. The observed phenomena include generation of the post-disruption RE beam and current conversion from plasma to RE. Zero loop voltage control was implemented in order to study the decay in simplified conditions. A distinctive drop of background plasma temperature and electron density was observed following an additional deuterium injection into the RE beam. With the loop voltage control the parametric dependence of the current decay rate dJ/dt can be studied systematically and possibly extrapolated to larger facilities. Second, recent results of experiments focused on the role of the magnetic field in physics of RE were analysed. In this contribution, special attention is given to the observed effects of the resonant magnetic perturbation on the RE population. The benefits of the RE experiments on COMPASS was reinforced by diagnostic enhancements (fast cameras, Cherenkov detector, vertical ECE etc) and modelling efforts (in particular, coupling of the METIS and LUKE codes).

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10305 - Fluids and plasma physics (including surface physics)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Plasma Physics and Controlled Fusion

ISSN

0741-3335

e-ISSN

—

Svazek periodika

61

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

11

Strana od-do

014010

Kód UT WoS článku

000450240400001

EID výsledku v databázi Scopus

2-s2.0-85057583773