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Experiences with a solid tungsten divertor in ASDEX Upgrade
- Source :
- Nuclear Materials and Energy, Nuclear Materials and Energy, Vol 12, Iss, Pp 205-209 (2017)
- Publication Year :
- 2017
- Publisher :
- Elsevier BV, 2017.
-
Abstract
- In 2013 a redesigned solid tungsten divertor, Div-III, was installed in ASDEX Upgrade. In two experimental campaigns more than 2700 plasma discharges with up to 10s duration, 110MJ plasma heating, and reaching a Psep/R of 10MW/m were conducted. Div-III is an adiabatically loaded divertor with tungsten target tiles clamped onto a water cooled structure. The tungsten target tiles were inspected and characterized during the shut-down period in 2014. As a result of the target inspection characteristic modifications of the plasma exposed tiles were detected that were not found during the target qualification in a high heat load test facility. 126 out of 128 tiles reveal deep cracks through the target. A lot of tiles show shallow cracks in the high heat load region and finally protruding tiles with strong local damages were found. It should be noted that none of these target damages have caused an unscheduled opening of ASDEX Upgrade. Keywords: Solid tungsten, Divertor, ASDEX Upgrade, Plasma energy
- Subjects :
- Nuclear and High Energy Physics
Test facility
Materials science
Materials Science (miscellaneous)
Water cooled
Nuclear engineering
Divertor
chemistry.chemical_element
Plasma
Tungsten
lcsh:TK9001-9401
01 natural sciences
010305 fluids & plasmas
Nuclear Energy and Engineering
chemistry
ASDEX Upgrade
0103 physical sciences
Forensic engineering
lcsh:Nuclear engineering. Atomic power
Tungsten target
Heat load
010306 general physics
Subjects
Details
- ISSN :
- 23521791
- Database :
- OpenAIRE
- Journal :
- Nuclear Materials and Energy
- Accession number :
- edsair.doi.dedup.....a373de441329234f96eda6b3f0194d9b
- Full Text :
- https://doi.org/10.1016/j.nme.2017.03.001