Linear Stability Properties of Medium- to High- n TAEs in ITER.

Gorelenkov, N. N. ; Berk, H. L. ; Budny, R. V. ; Kesse, C. E. ; Polevoi, A.

Technical Information Center Oak Ridge Tennessee

关键词: Tokamak devices;    ITER;    Linear stability;    Plasmas(Physics);    Alpha particles;   

RP-ID  :  DE2009960289

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

This document provides a detailed report on the successful completion of the DOE OFES Theory Milestone for FY2007: Improve the simulation resolution of linear stability properties of Toroidal Alfven Eigenmodes (TAE) driven by energetic particles and neutral beams in ITER by increasing the numbers of toroidal modes used to 15. In the course of the performed systematic study, equilibria representing the evolution of thirteen distinct plasma conditions were developed and analyzed to investigate the Alfven Eigenmode stability. The Tokamak Start-up Code, TSC, and the plasma transport simulation code, TRANSP, were used to develop three fiducial equilibria for the three main ITER scenarios: the elmy H-mode, hybrid and advanced (AT or reversed shear) plasma regimes. The simulations addressed the evolution from start-up to steady-state for a period of a thousand seconds. TSC was used to simulate the start-up and control of the plasma boundary, and TRANSP was used to obtain accurate particle distribution functions for the slowing down negative neutral beam injected (NNBI) ions, as well as the thermonuclear alpha-particles. In addition to the three fiducial ITER scenarios, ten additional plasmas, with varying NNBI injection angle and current drive schemes, were developed for the elmy H-mode, hybrid, and AT scenarios. This enables an evaluation of the potential of controlling the excitation of fast ion driven TAE (Toroidicity-induced Alfven Eigenmode) instabilities by varying the injection angle.