A lanthanum bromide detector of runaway electrons for TCV

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F25%3A00648099" target="_blank" >RIV/61389021:_____/25:00648099 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21340/25:00385104

Výsledek na webu

<a href="https://pubs.aip.org/aip/rsi/article/96/9/093501/3361441/A-lanthanum-bromide-detector-of-runaway-electrons" target="_blank" >https://pubs.aip.org/aip/rsi/article/96/9/093501/3361441/A-lanthanum-bromide-detector-of-runaway-electrons</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/5.0277312" target="_blank" >10.1063/5.0277312</a>

Jazyk výsledku

angličtina

Název v původním jazyce

A lanthanum bromide detector of runaway electrons for TCV

Popis výsledku v původním jazyce

The safe control and dissipation of Runaway Electrons (REs) generated in tokamak plasmas is vital for the operation of future fusion reactors. Measuring the evolution of RE energy in tokamaks is important for understanding their generation, transport, and termination. A new gamma ray spectrometer using a 2″ × 2″ cylindrical, cerium doped lanthanum bromide (LaBr3:Ce) scintillator coupled to a fast photomultiplier tube was developed for studying runaway electrons on the Tokamak à Configuration Variable (TCV). This diagnostic is capable of measuring the RE bremsstrahlung energy spectrum between 1 and 20 MeV with a peak height resolution of 1.91% at 1.44 MeV. A calibration of the detector using its self-emission up to 2.66 MeV was performed and modeled using Geant4. This model was then applied to predict the detector response to photons originating from TCV. The diagnostic was employed to measure the high energy Hard X-Ray (HXR) spectrum with energies in the range from 0.5 MeV to ∼ 8 M e V on TCV for the first time. In TCV, the observations made with this system are demonstrated to provide insights into the change in RE energies during current ramps.

Název v anglickém jazyce

A lanthanum bromide detector of runaway electrons for TCV

Popis výsledku anglicky

The safe control and dissipation of Runaway Electrons (REs) generated in tokamak plasmas is vital for the operation of future fusion reactors. Measuring the evolution of RE energy in tokamaks is important for understanding their generation, transport, and termination. A new gamma ray spectrometer using a 2″ × 2″ cylindrical, cerium doped lanthanum bromide (LaBr3:Ce) scintillator coupled to a fast photomultiplier tube was developed for studying runaway electrons on the Tokamak à Configuration Variable (TCV). This diagnostic is capable of measuring the RE bremsstrahlung energy spectrum between 1 and 20 MeV with a peak height resolution of 1.91% at 1.44 MeV. A calibration of the detector using its self-emission up to 2.66 MeV was performed and modeled using Geant4. This model was then applied to predict the detector response to photons originating from TCV. The diagnostic was employed to measure the high energy Hard X-Ray (HXR) spectrum with energies in the range from 0.5 MeV to ∼ 8 M e V on TCV for the first time. In TCV, the observations made with this system are demonstrated to provide insights into the change in RE energies during current ramps.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10304 - Nuclear physics

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Review of Scientific Instruments

ISSN

0034-6748

e-ISSN

1089-7623

Svazek periodika

96

Číslo periodika v rámci svazku

9

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

10

Strana od-do

093501

Kód UT WoS článku

001566040600001

EID výsledku v databázi Scopus

2-s2.0-105015298327