Release Time:2019-10-20  Hits:

Indexed by: Journal Article

Date of Publication: 2018-11-01

Journal: FUSION ENGINEERING AND DESIGN

Included Journals: CPCI-S、SCIE

Volume: 136

Issue: ,SI

Page Number: 908-913

ISSN: 0920-3796

Key Words: Retention; Divertor; Tungsten; Modeling

Abstract: The edge plasma simulation is coupled to fuel retention code to assess the fuel retention in tungsten divertor, which is a critical safety issue for the future fusion device. SOLPS suite of code is applied to calculate the divertor plasma condition as the input parameters for the fuel retention simulation, and HIIPC code is employed to calculate the fuel retention during the discharge. EAST upper divertor is chosen for the application of the coupled code. A realistic cycle of plasma discharges consisting of 60 s of plasma exposure followed by a resting period of 500 s is simulated to study the fuel retention from attached to detached divertor regime. The simulation results show significant difference of fuel retention between attached and detached plasma. Moreover, the 'hot wall' operation is proposed as a candidate method to reduce the retention.