UKAEA Papers

"Measurements and modeling of Alfvén eigenmode induced fast ion transport and loss in DIII-D and ASDEX Upgrade"

• M.A. Van Zeeland
• W.W. Heidbrink
• R.K. Fisher
• M. García Muñoz,
• G.J. Kramer
• D.C. Pace
• R.B. White
• S. Aekaeslompolo
• M.E. Austin
• J.E. Boom
• I.G.J. Classen
• S. Da Graça
• B. Geiger
• M. Gorelenkova
• N. N. Gorelenkov
• A. W. Hyatt
• N. Luhmann
• M. Maraschek
• G. R. McKee
• R. A. Moyer
• C. M. Muscatello
• R. Nazikian
• H. Park
• S. Sharapov
• W. Suttrop
• G. Tardini
• B. J. Tobias
• Y. B. Zhu
• DIII-D and ASDEX Upgrade Teams

Neutral beam injection into reversed magnetic shear DIII-D and ASDEX Upgrade plasmas produces a variety of Alfvénic activity including toroidicity-induced Alfvén eigenmodes and reversed shear Alfvén eigenmodes (RSAEs). These modes are studied during the discharge current ramp phase when incomplete current penetration results in a high central sa…