JET scrape-off-layer ionization at lower hybrid wave launching

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F12%3A00377643" target="_blank" >RIV/61389021:_____/12:00377643 - isvavai.cz</a>

Result on the web

<a href="http://iopscience.iop.org/0741-3335/54/7/074005/pdf/0741-3335_54_7_074005.pdf" target="_blank" >http://iopscience.iop.org/0741-3335/54/7/074005/pdf/0741-3335_54_7_074005.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/0741-3335/54/7/074005" target="_blank" >10.1088/0741-3335/54/7/074005</a>

Result language

angličtina

Original language name

JET scrape-off-layer ionization at lower hybrid wave launching

Original language description

We present in this paper modelling of the JET scrape-off layer (SOL) including direct SOL ionization by launched lower hybrid (LH) waves. For that purpose, the two-dimensional fluid code EDGE2D-NIMBUS was modified in order to account for possible enhanced ionization in the SOL, due to the LH power absorbed by the electrons in a layer extending in the radial direction from the launcher. By taking the direct LH SOL ionization into account, the observed modification of the density in front of the LH antenna during a LH power and gas injection, can be explained. The JET grill private SOL limiters, acting as sinks for the particles, are also included in the model. We compare the efficiency of gas puffing from the top and the outer mid-plane for SOL densityenhancement and improvement in LH coupling. The observed reduction of the temporal variation of the LH wave reflection coefficient and of measured saturated currents in the SOL during ELMs, is explained. The density depletion

Czech name

—

Czech description

—

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BL - Plasma physics and discharge through gases

OECD FORD branch

—

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

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

Publication year

2012

Confidentiality

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

Name of the periodical

Plasma Physics and Controlled Fusion

ISSN

0741-3335

e-ISSN

—

Volume of the periodical

54

Issue of the periodical within the volume

7

Country of publishing house

GB - UNITED KINGDOM

Number of pages

11

Pages from-to

—

UT code for WoS article

000305891500006

EID of the result in the Scopus database

—