Modeling of 110 GHz electron cyclotron wave propagation and absorption on DIII-D

Conference · Tue Apr 01 04:00:00 EST 1997

OSTI ID:486160

Lin-Liu, Y R; Luce, T C; Chiu, S C; Miller, R L; Prater, R

In modeling electron cyclotron (EC) waves for heating (ECH) and current drive (ECCD) applications, the standard approach describes wave propagation using geometric optic ray tracing with cold plasma dispersion and wave absorption using a relativistic warm plasma expression. However, recent vertical O-mode transmission measurements on Tore Supra indicate that wave trajectories near the fundamental resonance frequency can significantly deviate from predictions of cold plasma analysis. The experimental results were attributed to warm plasma refraction effects caused by the anomalous dispersion associated with wave-particle resonance. Here, warm plasma refraction effects on wave propagation and absorption are examined in the context of a slab model in the parameter regime of interest to the upcoming 110 GHz electron cyclotron heating and current drive experiments on DIII-D.

• Research Organization: General Atomics, San Diego, CA (United States)
• Sponsoring Organization: USDOE Office of Energy Research, Washington, DC (United States)
• DOE Contract Number: AC03-89ER51114
• OSTI ID: 486160
• Report Number(s): GA--A22598; CONF-9704102--6; ON: DE97007607
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ABSORPTION
DISPERSION RELATIONS
DOUBLET-3 DEVICE
ECR HEATING
ELECTROMAGNETIC RADIATION
NON-INDUCTIVE CURRENT DRIVE
PLASMA SIMULATION
REFRACTIVE INDEX
WAVE PROPAGATION