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Development of a Cherenkov-type diagnostic system to study runaway electrons within the COMPASS tokamak

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F17%3A00481460" target="_blank" >RIV/61389021:_____/17:00481460 - isvavai.cz</a>

  • Alternative codes found

    RIV/68407700:21340/17:00316567

  • Result on the web

    <a href="http://dx.doi.org/10.1088/1748-0221/12/10/C10014" target="_blank" >http://dx.doi.org/10.1088/1748-0221/12/10/C10014</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1088/1748-0221/12/10/C10014" target="_blank" >10.1088/1748-0221/12/10/C10014</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Development of a Cherenkov-type diagnostic system to study runaway electrons within the COMPASS tokamak

  • Original language description

    Direct measurements of fast electrons, which are produced in high-temperature plasma and escape from tokamak-type facilities, are of particular interest for ITER and future fusion devices, where intense runaway electrons (RE) can significantly damage the firstwall components. Therefore, the runaway control and mitigation based on credible measuring methods should be developednalready in present devices. A team from the National Centre for Nuclear Research (NCBJ), Poland, developed special probes equipped with Cherenkov-type detectors for measurements of the fast electrons within edge plasmas of tokamaks. Studies of the fast runaway electrons were extensively carried out at the COMPASS tokamak at the Institute of Plasma Physics (IPP) in Prague during experimental campaigns in 2014–2016. In order to investigate an electron-beam energy distribution a three-channel probe equipped with the Cherenkov-type detectors sensitive to electrons of different energies has been constructed. The measurements performed by means of these detectors showed that the first fast electron peak appears usually in the current ramp-up phase, even before the hard Xrays (HXR) pulse. Some electron signals can also be observed during subsequent HXR emissions.nHowever, the most distinct electron peaks in all energy channels appear mainly during the plasma disruption. A correlation of Cherenkov signals with the MHD activity was also studied.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    21100 - Other engineering and technologies

Result continuities

  • Project

    <a href="/en/project/LM2015045" target="_blank" >LM2015045: COMPASS – Tokamak for Thermonuclear Fusion Research</a><br>

  • Continuities

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Others

  • Publication year

    2017

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    Journal of Instrumentation

  • ISSN

    1748-0221

  • e-ISSN

  • Volume of the periodical

    12

  • Issue of the periodical within the volume

    October

  • Country of publishing house

    GB - UNITED KINGDOM

  • Number of pages

    8

  • Pages from-to

  • UT code for WoS article

    000414167000014

  • EID of the result in the Scopus database

    2-s2.0-85033665917