Details

Autor(en) / Beteiligte

• Boscary, J.
• Lore, J.
• Lumsdaine, A.
• Maier, M.
• McGinnis, D.
• Peacock, A.
• Tretter, J.

Titel

Development activities of the high heat flux scraper element

Ist Teil von

• Fusion engineering and design, 2015-10, Vol.98-99, p.1231-1234

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2015

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The function of the high heat flux scraper element is to reduce the heat loads on the element ends of the actively cooled divertor of Wendelstein 7-X. The scraper element is actively water cooled to remove up to 550kW steady state power load, with localized heat fluxes as high as 20MW/m2. Its surface area, 0.17m2, is contoured to optimally intercept both upstream and downstream particle fluxes. The plasma facing surface is made of 24 individual scraper fingers based on the monoblock technology. Each scraper finger is 247mm long and 28mm wide and has 13 monoblocks made of CFC NB31 bonded by hot isostatic pressing onto a CuCrZr cooling tube equipped with a copper twisted tape. Development activities, described here, include the design and fabrication of prototypes to validate the different technologies selected for the scraper element design to prepare a possible production.