Electric fields and currents in an island divertor configuration
One candidate for an optimized particle and energy exhaust concept in stellartors is the island divertor. Due to the special topology of such a design, its physics characteristics can be quite different from standard tokamak divertors or Limited Stellarator Plasmas. The capabilities have been extended of the two-dimensional B2-solps5.0 multifluid Scrape-Off layer plasma simulation code to handle diverted island geometries, including all relevant physics, in particular drifts and currents. The focus is here on the structure of the electric potential and electric field in this island configuration. The article shows the establishment of potential and current flow patterns favoring density accumulation inside the island. This electric potential distribution is non-trivial and quite different from the phi = 3 kT ansatz used in previous studies.
Bibliographic Reference: An article published in: Journal of Nuclear Materials, Vol.290-293 (2001), pp.829-835
Record Number: 200114133 / Last updated on: 2001-12-14
Original language: en
Available languages: en