Novel concept suppressing plasma heat pulses in a tokamak by fast divertor sweeping
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F22%3A00565859" target="_blank" >RIV/61389021:_____/22:00565859 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21230/22:00360945 RIV/68407700:21340/22:00360945
Result on the web
<a href="https://www.nature.com/articles/s41598-022-18748-x" target="_blank" >https://www.nature.com/articles/s41598-022-18748-x</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1038/s41598-022-18748-x" target="_blank" >10.1038/s41598-022-18748-x</a>
Alternative languages
Result language
angličtina
Original language name
Novel concept suppressing plasma heat pulses in a tokamak by fast divertor sweeping
Original language description
One of the remaining challenges in magnetic thermonuclear fusion is survival of the heat shield protecting the tokamak reactor vessel against excessive plasma heat fluxes. Unmitigated high confinement edge localized mode (ELM) is a regular heat pulse damaging the heat shield. We suggest a novel concept of magnetic sweeping of the plasma contact strike point fast and far enough in order to spread this heat pulse. We demonstrate feasibility of a dedicated copper coil in a resonant circuit, including the induced currents and power electronics. We predict the DEMO ELM properties, simulate heat conduction, 3D particles motion and magnetic fields of the plasma and coil in COMSOL Multiphysics and Matlab. The dominant system parameter is voltage, feasible 18 kV yields 1 kHz sweeping frequency, suppressing the ELM-induced surface temperature rise by a factor of 3. Multiplied by other known mitigation concepts, ELMs might be mitigated enough to ensure safe operation of DEMO.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10305 - Fluids and plasma physics (including surface physics)
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Scientific Reports
ISSN
2045-2322
e-ISSN
2045-2322
Volume of the periodical
12
Issue of the periodical within the volume
1
Country of publishing house
DE - GERMANY
Number of pages
12
Pages from-to
17013
UT code for WoS article
000866180700032
EID of the result in the Scopus database
2-s2.0-85139625881