Losses of runaway electrons in MHD-active plasmas of the COMPASS tokamak.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F17%3A00479474" target="_blank" >RIV/61389021:_____/17:00479474 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21230/17:00312837 RIV/68407700:21340/17:00312837 RIV/00216208:11320/17:10371635

Výsledek na webu

<a href="http://dx.doi.org/10.1088/1741-4326/aa6aba" target="_blank" >http://dx.doi.org/10.1088/1741-4326/aa6aba</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1741-4326/aa6aba" target="_blank" >10.1088/1741-4326/aa6aba</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Losses of runaway electrons in MHD-active plasmas of the COMPASS tokamak.

Popis výsledku v původním jazyce

The significant role of magnetic perturbations in mitigation and losses of runaway electrons (REs) was documented in dedicated experimental studies of RE at the COMPASS tokamak. REs in COMPASS are produced both in low density quiescent discharges and in disruptions triggered by massive gas injection (MGI). The role of the RE seed produced in the beginning of the discharge on the subsequent RE population proved significant. Modulation of the RE losses by MHD instabilities was observed at several characteristic frequencies, as well as by magnetic field oscillations related to power supplies. Magnetic islands seem to suppress the losses as the HXR signal is low and coherent with the island rotation frequency. Moreover,nperiods of increased losses of REs observed in the current quench (CQ) and early RE beam plateau phase of the MGI disruptions seem to be linked to the bursts of magnetic perturbation, and to the observation of filaments in the fast visible camera images.

Název v anglickém jazyce

Losses of runaway electrons in MHD-active plasmas of the COMPASS tokamak.

Popis výsledku anglicky

The significant role of magnetic perturbations in mitigation and losses of runaway electrons (REs) was documented in dedicated experimental studies of RE at the COMPASS tokamak. REs in COMPASS are produced both in low density quiescent discharges and in disruptions triggered by massive gas injection (MGI). The role of the RE seed produced in the beginning of the discharge on the subsequent RE population proved significant. Modulation of the RE losses by MHD instabilities was observed at several characteristic frequencies, as well as by magnetic field oscillations related to power supplies. Magnetic islands seem to suppress the losses as the HXR signal is low and coherent with the island rotation frequency. Moreover,nperiods of increased losses of REs observed in the current quench (CQ) and early RE beam plateau phase of the MGI disruptions seem to be linked to the bursts of magnetic perturbation, and to the observation of filaments in the fast visible camera images.

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

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Nuclear Fusion

ISSN

0029-5515

e-ISSN

—

Svazek periodika

57

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

AT - Rakouská republika

Počet stran výsledku

10

Strana od-do

—

Kód UT WoS článku

000419162300001

EID výsledku v databázi Scopus

2-s2.0-85020923379