Energy composition of high-energy neutral beams on the COMPASS tokamak

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F16%3A00464276" target="_blank" >RIV/61389021:_____/16:00464276 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11320/16:10334381

Výsledek na webu

<a href="http://dx.doi.org/10.1515/nuka-2016-0069" target="_blank" >http://dx.doi.org/10.1515/nuka-2016-0069</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1515/nuka-2016-0069" target="_blank" >10.1515/nuka-2016-0069</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Energy composition of high-energy neutral beams on the COMPASS tokamak

Popis výsledku v původním jazyce

The COMPASS tokamak is equipped with two identical neutral beam injectors (NBI) for additional plasma heating. They provide a beam of deuterium atoms with a power of up to (2 300) kW. We show that the neutral beam is not monoenergetic but contains several energy components. An accurate knowledge of the neutral beam power in each individual energy component is essential for a detailed description of the beam--plasma interaction and better understanding of the NBI heating processes in the COMPASS tokamak. Thisnpaper describes the determination of individual energy components in the neutral beam from intensities of thenDoppler-shifted D lines, which are measured by a high-resolution spectrometer viewing the neutral beam-linenat the exit of NBI. Furthermore, the divergence of beamlets escaping single aperture of the last acceleratingngrid is deduced from the width of the Doppler-shifted lines. Recently, one of the NBI systems was modifi ed bynthe removal of the Faraday copper shield from the ion source. The comparison of the beam composition and thenbeamlet divergence before and after this modifi cation is also presented.

Název v anglickém jazyce

Energy composition of high-energy neutral beams on the COMPASS tokamak

Popis výsledku anglicky

The COMPASS tokamak is equipped with two identical neutral beam injectors (NBI) for additional plasma heating. They provide a beam of deuterium atoms with a power of up to (2 300) kW. We show that the neutral beam is not monoenergetic but contains several energy components. An accurate knowledge of the neutral beam power in each individual energy component is essential for a detailed description of the beam--plasma interaction and better understanding of the NBI heating processes in the COMPASS tokamak. Thisnpaper describes the determination of individual energy components in the neutral beam from intensities of thenDoppler-shifted D lines, which are measured by a high-resolution spectrometer viewing the neutral beam-linenat the exit of NBI. Furthermore, the divergence of beamlets escaping single aperture of the last acceleratingngrid is deduced from the width of the Doppler-shifted lines. Recently, one of the NBI systems was modifi ed bynthe removal of the Faraday copper shield from the ion source. The comparison of the beam composition and thenbeamlet divergence before and after this modifi cation is also presented.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BL - Fyzika plasmatu a výboje v plynech

OECD FORD obor

—

Projekt

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

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Nukleonika

ISSN

0029-5922

e-ISSN

—

Svazek periodika

61

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

PL - Polská republika

Počet stran výsledku

5

Strana od-do

419-423

Kód UT WoS článku

000387150200005

EID výsledku v databázi Scopus

2-s2.0-84995470835