Buscar
Mostrando ítems 1-6 de 6
Artículo
Near midplane scintillator-based fast ion loss detector on DIII-D
(America Institute of Physics, 2012)
A new scintillator-based fast-ion loss detector (FILD) installed near the outer midplane of the plasma has been commissioned on DIII-D. This detector successfully measures coherent fast ion losses produced by fast-ion ...
Artículo
Scrape-off layer ion acceleration during fast wave injection in the DIII-D tokamak
(IOP Publishing, 2012-06)
Fast wave injection is employed on the DIII-D tokamak as a current drive and electron heating method. Bursts of energetic ions with energy Eo > 20 keV are observed immediately following fast wave injection in experiment ...
Artículo
Modeling the response of a fast ion loss detector using orbit tracing techniques in a neutral beam prompt-loss study on the DIII-D tokamak
(American Institute of Physics, 2010)
A numerical model describing the expected measurements of neutral beam prompt-losses by anewly commissioned fast ion loss detector FILD in DIII-D is presented. This model incorporatesthe well understood neutral beam ...
Artículo
Convective beam ion losses due to Alfven eigenmodes in DIII-D reversed-shear plasmas
(IOP Publishing, 2011-06)
Coherent losses of neutral beam ions are observed at frequencies corresponding to toroidal and reversed-shear Alfven eigenmodes (RSAEs) in DIII-D. ´ Reversed-shear profiles are created by injecting beam power during the ...
Artículo
Characterization of off-axis fishbones
(IOP Publishing, 2011-08)
Repetitive bursting instabilities with strong frequency chirping occur in highbeta, beam-heated plasmas with safety factor q > 1 in the DIII-D tokamak. Although the mode structures differ, in many ways, the off-axis ...
Artículo
Scintillator-based diagnostic for fast ion loss measurements on DIII-D
(AIP Publishing, 2010-10)
A new scintillator-based fast ion loss detector has been installed on DIII-D with the time response 100 kHz needed to study energetic ion losses induced by Alfvén eigenmodes and other MHD instabilities. Based on the ...