Scattering and localizability of ECH (electron-cyclotron heating) power in CIT (Compact Ignition Tokamak)

Conference · Mon Jan 01 04:00:00 EST 1990

DOI:https://doi.org/10.2172/6228251· OSTI ID:6962849

Smith, G R

The theory of scattering by drift-wave density fluctuations is applied to electron-cyclotron heating (ECH) in the Compact Ignition Tokamak (CIT). It is found for CIT that the scattering angles are small and have a Gaussian distribution. An analytic result is given for the average number of scattering events suffered by a ray during propagation through the turbulence layer; this average number is 1.3 for the turbulence level expected in CIT. Localizability of ECH power in CIT is also studied for two choices of steering mirror. Better access to outer flux surfaces and better localization is achieved if the power is steered within a poloidal plane. 7 refs., 3 figs.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• Sponsoring Organization: DOE/ER
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6962849
• Report Number(s): UCRL-JC-103123; CONF-900602--10; ON: DE90011468
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700101* -- Fusion Energy-- Plasma Research-- Confinement
Heating
& Production
CLOSED PLASMA DEVICES
COMPACT IGNITION TOKAMAK
ECR HEATING
FLUCTUATIONS
HEATING
HIGH-FREQUENCY HEATING
MAGNETIC FIELDS
PLASMA DRIFT
PLASMA HEATING
SCATTERING
THERMONUCLEAR DEVICES
THERMONUCLEAR REACTORS
TOKAMAK DEVICES
TOKAMAK TYPE REACTORS
TURBULENCE
VARIATIONS
WAVE PROPAGATION