| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 6745819 | Fusion Engineering and Design | 2015 | 4 Pages |
Abstract
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 550Â kW steady state power load, with localized heat fluxes as high as 20Â MW/m2. Its surface area, 0.17Â m2, 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 247Â mm long and 28Â mm 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.
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Authors
J. Boscary, J. Lore, A. Lumsdaine, M. Maier, D. McGinnis, A. Peacock, J. Tretter,