Conference Proceedings Paper
Physical Design and Performance Prediction of the STOR-U Spherical Tokamak
32nd Annual CNS Conference - 2011 June 05-08
Dazhi Liu (University of Saskatchewan)
Chijin Xiao (University of Saskatchewan)
Akira Hirose (University of Saskatchewan)
STOR-U (R0 = 55 cm, A = 1.7, Ip = 2 MA) is a spherical tokamak recently proposed to study high beta plasma physics and engineering. In this paper, physical design and performance prediction of the STOR-U are presented. Various equilibria have been obtained to meet different discharge requirements. Eigenvalue expansion technique was employed to optimize the poloidal field system for current start-up with careful consideration given to eddy current effects in the vacuum chamber. Performance prediction is made using ASTRA code. Simulation results reveal that ion temperature increases significantly in NBI heated discharge. Different NBI configurations are also studied.
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