@article{6c4bae27269c44069315bae60352d0d6,
title = "Design and analysis of divertor scraper elements for the W7-X stellarator",
abstract = "A set of new water-cooled divertor components is being designed for the Wendelstein 7-X stellarator to protect the edges of the primary plasma facing components during the bootstrap current evolution (∼40}~s). These new components, referred to as scraper elements (SEs), will intercept field lines and associated heat flux that would otherwise overload the main target edges in certain operational scenarios. The SEs are calculated to experience peak heat fluxes ∼15-16~MW/m2 and will be constructed from carbon fiber reinforced composite monoblocks of a type that has been qualified for ITER. The heat flux distribution and magnitude is calculated from field line following in a 3-D magnetic field that includes the contribution from plasma currents. The heat flux calculations are coupled with an engineering design in an iterative process to generate SEs that meet the design criteria while reducing the geometric complexity of the elements.",
keywords = "Divertor, Wendelstein 7-X (W7-X), heat flux, island divertor (ID), stellarator",
author = "Lore, {Jeremy D.} and Tamara Andreeva and Jean Boscary and Sergey Bozhenkov and Joachim Geiger and Harris, {Jeffrey H.} and Hauke Hoelbe and Arnold Lumsdaine and Dean McGinnis and Alan Peacock and Joseph Tipton",
year = "2014",
month = mar,
doi = "10.1109/TPS.2014.2303649",
language = "English",
volume = "42",
pages = "539--544",
journal = "IEEE Transactions on Plasma Science",
issn = "0093-3813",
publisher = "Institute of Electrical and Electronics Engineers",
number = "3",
}
