Simulation of trajectories of runaway electrons for support diagnostics at the COMPASS tokamak

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F18%3A00326942" target="_blank" >RIV/68407700:21340/18:00326942 - 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

Simulation of trajectories of runaway electrons for support diagnostics at the COMPASS tokamak

Original language description

The Cherenkov detector is one of the few runaway electron diagnostics, which do not rely on a detection of secondary radiation caused by an impact of high energetic particles on the limiter or the first wall of the tokamak. The capability of a direct observation of runaway electrons together with a possibility of setting energy thresholds for incoming particles makes the Cherenkov detector a useful diagnostics tool for an investigation of runaway electrons dynamics. In the past years experiments focused on observation of runaway electrons by the Cherenkov-type detector were performed at the COMPASS tokamak. One of features of the Cherenkov detector is a measurement in the well defined location of the tokamak with high temporal resolution. Due to safety reasons, the Cherenkov detector is placed in the shadow of the low field side protection limiter in most discharges performed on the COMPASS tokamak. The open question is whether runaway electrons can reach the detection head of the Cherenkov detector or are preferably lost at the protection limiter. The aim of this work is a simulation of trajectories of escaping runaway electrons and finding the location of their impact in order to determine possible parameters of runaway electrons, which can be detected by the Cherenkov detector. For these purposes, the pushers for tracking of relativistic particles were implemented in the Python environment and particles are tracked in the reconstructed axisymmetric magnetic field of the COMPASS tokamak (calculated by the EFIT code)

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

10305 - Fluids and plasma physics (including surface physics)

Project

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Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2018

Confidentiality

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

Article name in the collection

Europhysics Conference Abstracts Vol. 42A

ISBN

9781510868441

ISSN

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e-ISSN

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Number of pages

4

Pages from-to

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Publisher name

European Physical Society

Place of publication

Mulhouse

Event location

Praha

Event date

Jul 2, 2018

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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