Simulations of the Neutral-beam-induced Rotation, Radial Electric Field, and Flow Shearing Rate in Next-step Burning Plasmas | |
Budny, R.V. | |
Princeton University. Plasma Physics Laboratory. | |
关键词: Numerical Simulation; Tokamaks; Velocity Computer Simulation; Transport; 70 Plasma Physics And Fusion Technology; | |
DOI : 10.2172/808386 RP-ID : PPPL-3737 RP-ID : AC02-76CH03073 RP-ID : 808386 |
|
美国|英语 | |
来源: UNT Digital Library | |
【 摘 要 】
Toroidal rotation of plasmas in present tokamaks is beneficial for increasing the stability to wall-induced MHD and appears to reduce the anomalous transport associated with micro-turbulence. This paper calculates the toroidal rotation expected from neutral-beam injection in the proposed FIRE and ITER-FEAT tokamak reactors. Self-consistent burning plasmas for these tokamaks have been constructed using the TRANSP plasma analysis code. Neutral-beam injection has been proposed for FIRE and ITER-FEAT. The neutral-beam-induced torques are computed, and assumptions for the anomalous transport of toroidal angular momentum are used to calculate the toroidal rotation profiles. The central Mach numbers are about 3-8%. The ratio of the rotation speed to the Alfvin speed is less than 1%. Assuming neoclassical poloidal rotation and force balance, the radial electric field and flow shearing rate are calculated. Peak shearing rates near the outboard edge are in the 10-100 krad/s range.
【 预 览 】
Files | Size | Format | View |
---|---|---|---|
808386.pdf | 443KB | download |