Sustained W-melting experiments on actively cooled ITER-like plasma facing unit in WEST
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F21%3A00552292" target="_blank" >RIV/61389021:_____/21:00552292 - isvavai.cz</a>
Result on the web
<a href="https://iopscience.iop.org/article/10.1088/1402-4896/ac326a" target="_blank" >https://iopscience.iop.org/article/10.1088/1402-4896/ac326a</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1402-4896/ac326a" target="_blank" >10.1088/1402-4896/ac326a</a>
Alternative languages
Result language
angličtina
Original language name
Sustained W-melting experiments on actively cooled ITER-like plasma facing unit in WEST
Original language description
The consequences of tungsten (W) melting on divertor lifetime and plasma operation are high priority issues for ITER. Sustained and controlled W-melting experiment has been achieved for the first time in WEST on a poloidal sharp leading edge of an actively cooled ITER-like plasma facing unit (PFU). A series of dedicated high power steady state plasma discharges were performed to reach the melting point of tungsten. The leading edge was exposed to a parallel heat flux of about 100MW.m-2 for up to 5 s providing a melt phase of about 2 s without noticeable impact of melting on plasma operation (radiated power and tungsten impurity content remained stable at constant input power) and no melt ejection were observed. The surface temperature of theMBwas monitored by a high spatial resolution (0.1mm/pixel) infrared camera viewing the melt zone from the top of the machine. The melting discharge was repeated three times resulting in about 6 s accumulated melting duration leading to material displacement from three similar pools. Cumulated on the overall sustained melting periods, this leads to excavation depth of about 230 µmfollowed by a re-solidified tungsten bump of 200 µmin the JxB direction.
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
10305 - Fluids and plasma physics (including surface physics)
Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physica Scripta
ISSN
0031-8949
e-ISSN
1402-4896
Volume of the periodical
96
Issue of the periodical within the volume
12
Country of publishing house
SE - SWEDEN
Number of pages
8
Pages from-to
124057
UT code for WoS article
000715528800001
EID of the result in the Scopus database
2-s2.0-85119062391