First Evidence for the Existence of Odd Toroidal Alfven Eigenmodes (TAEs) from the Simultaneous Observation of Even and Odd TAEs on the Joint European Torus

Kramer, G.J. ; Sharapov, S.E. ; Nazikian, R. ; Gorelenkov, N.N. ; Budny, R. ; contributors, JET-EFDA

Princeton University. Plasma Physics Laboratory.

关键词: Heating;    Lower Hybrid Current Drive;    70 Plasma Physics And Fusion Technology;    43 Particle Accelerators;    Cyclotrons;   

DOI  :  10.2172/809963
RP-ID  :  PPPL-3768
RP-ID  :  AC02-76CH03073
RP-ID  :  809963

美国|英语

来源: UNT Digital Library

【 摘 要 】

Experimental evidence is presented for the existence of the theoretically predicted odd Torodicity-induced Alfven Eigenmode (TAEs) from the simultaneous appearance of odd and even TAEs in a normal shear discharge. The modes are observed in low central magnetic shear plasmas created by injecting lower hybrid current drive. A fast ion population was created by applying ion cyclotron heating at the high field side to excite the TAEs in the weak magnetic shear region. The odd TAEs were identified from their frequency, mode number, and timing relative to the even TAEs.