Runaway electron study at the COMPASS tokamak using the Timepix3-based silicon pixel detector with SPIDR 10 GBps readout

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Runaway electron study at the COMPASS tokamak using the Timepix3-based silicon pixel detector with SPIDR 10 GBps readout

Popis výsledku v původním jazyce

The relativistic runaway electrons (RE), that might appear during disruption of the plasma discharge in tokamaks, are potentially dangerous for the plasma facing components [1]. Therefore, it is important to understand the process of their emergence and to develop reliable methods of diagnostics and mitigation strategies for the successful operation of future machines such as ITER. Physics of the RE generation and their subsequent mitigation is one of the main topics of research at the COMPASS tokamak [2]. Recently at the tokamak, the behavior of REs has been investigated using high-Z gas and solid pellet injection. Semiconductor detectors have found their niche in plasma diagnostics providing spatial and temporal signal information along with energy deposited either by the RE itself or by the secondary radiation. During the most recent RE campaign at the COMPASS tokamak, a Timepix3- based silicon pixel detector [3] along with the fastest readout interface available, SPIDR [4], was installed at the radial diagnostic port. The pixel detector setup allows radiation imaging on the single particle level with energy measurement in a 256 x 256 pixel matrix with a hit time resolution better than 2 ns. The RE secondary soft X-ray radiation was observed using a pinhole camera and the time structure of the gamma radiation flux has been studied and correlated to the other diagnostics such as AXUV detectors for soft X-ray detection, NaI(Tl) scintillation detectors for hard X-rays and neutrons [5], and a calorimetry head for measurements of the REs energy after their termination.

Název v anglickém jazyce

Runaway electron study at the COMPASS tokamak using the Timepix3-based silicon pixel detector with SPIDR 10 GBps readout

Popis výsledku anglicky

The relativistic runaway electrons (RE), that might appear during disruption of the plasma discharge in tokamaks, are potentially dangerous for the plasma facing components [1]. Therefore, it is important to understand the process of their emergence and to develop reliable methods of diagnostics and mitigation strategies for the successful operation of future machines such as ITER. Physics of the RE generation and their subsequent mitigation is one of the main topics of research at the COMPASS tokamak [2]. Recently at the tokamak, the behavior of REs has been investigated using high-Z gas and solid pellet injection. Semiconductor detectors have found their niche in plasma diagnostics providing spatial and temporal signal information along with energy deposited either by the RE itself or by the secondary radiation. During the most recent RE campaign at the COMPASS tokamak, a Timepix3- based silicon pixel detector [3] along with the fastest readout interface available, SPIDR [4], was installed at the radial diagnostic port. The pixel detector setup allows radiation imaging on the single particle level with energy measurement in a 256 x 256 pixel matrix with a hit time resolution better than 2 ns. The RE secondary soft X-ray radiation was observed using a pinhole camera and the time structure of the gamma radiation flux has been studied and correlated to the other diagnostics such as AXUV detectors for soft X-ray detection, NaI(Tl) scintillation detectors for hard X-rays and neutrons [5], and a calorimetry head for measurements of the REs energy after their termination.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

10305 - Fluids and plasma physics (including surface physics)

Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název statě ve sborníku

47th EPS Conference on Plasma Physics, EPS 2021

ISBN

978-1-7138-3704-6

ISSN

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e-ISSN

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Počet stran výsledku

4

Strana od-do

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Název nakladatele

European Physical Society

Místo vydání

Mulhouse

Místo konání akce

Sitges

Datum konání akce

21. 6. 2021

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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