Neutron Profiles and Fuel Ratio nT /nD Measurements in JET ELMy H-mode Plasmas with Tritium Puff

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F06%3A00041797" target="_blank" >RIV/61389021:_____/06:00041797 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Neutron Profiles and Fuel Ratio nT /nD Measurements in JET ELMy H-mode Plasmas with Tritium Puff

Original language description

Two-dimensional (2D) spatial profile and the temporal evolution of the 14 and 2.5 MeV neutron emissivities from D?D and D?T fusion reactions were studied using the measurements of the upgraded neutron profile monitor during the last trace tritium experiments in JET. The JET neutron profile monitor provides unique capability for 2.5 and 14 MeV neutrons line-integrated measurements simultaneously. A systematic comparison of D?D and D?T neutron emissivity was performed. The tritium concentration or fuel ratio (nT/nD) was analysed for a set of 34 ELMy-H mode discharges with tritium puff. Tritium concentration is deduced with a method based on the ratio of D?T 14 MeV and D?D 2.5 MeV neutron emissivities in order to exploit the maximum information availablefrom neutron data. With the help of a tomography algorithm recently developed at JET, 2D spatial profiles of the tritium concentration in the plasma were obtained. These profiles can be used to perform transport studies.

Czech name

Profily neutronů a měření palivového poměru nT/nD v ELMy H-mode plazmatech tokamaku JET se vstřikováním tritia

Czech description

Pomocí sady detektorů neutronů s prostorovým rozlišením bylo na tokamaku JET a tomografie bylo měřěno prostorové rozdělení fúzních reakcí D-D (2,5 MeV neutrony) a, odděleně, i reakcí D-T (14 MeV neutrony). Z poměru D-D a D-T reakcí lze sledovat transporttritia do deuteriového plazmatu, a tedy i odhadnout dobu udržení tritia v plazmatu.

Type

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

CEP classification

BL - Plasma physics and discharge through gases

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2006

Confidentiality

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

Name of the periodical

Nuclear Fusion

ISSN

0029-5515

e-ISSN

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Volume of the periodical

46

Issue of the periodical within the volume

7

Country of publishing house

AT - AUSTRIA

Number of pages

16

Pages from-to

725-740

UT code for WoS article

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EID of the result in the Scopus database

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