Confinement scaling of core plasma electrons in the ELMO Bumpy Torus experiment

Journal Article · Thu Jul 01 04:00:00 EDT 1982 · Phys. Fluids; (United States)

DOI:https://doi.org/10.1063/1.863863· OSTI ID:5184382

Uckan, T; Berry, L A; Hillis, D L; Richards, R K

Recent high microwave experiments in the ELMO Bumpy Torus-Scale (EBT-S) at power levels through 200 kW cw at 28 GHz cover a broad parameter range (density, temperature, potential well, etc.), the operating window (T-mode) increases with power, and the plasma characteristics change significantly with operating parameters (power and pressure). Because the density profiles are observed to change with these parameters, compasions with zero-dimensional theoretical expectations for the complete data set are not possible. However, it is shown that for controlled power and pressure combinations, scale lengths and ephi/T/sub e/ are constant and the electron transport in EBT-S scales neoclassically; the power balance (P/sub ..mu../approx.n/sup 2//T/sup 1/2//sub e/ ) and particle balance (tau/sub E//tau/sub p/ approx.constant) are consistent with neoclassical predictions.

• Research Organization: Fusion Energy Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 5184382
• Journal Information: Phys. Fluids; (United States), Journal Name: Phys. Fluids; (United States) Vol. 25:7; ISSN PFLDA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700101* -- Fusion Energy-- Plasma Research-- Confinement
Heating
& Production
CONFINEMENT
ELECTROMAGNETIC RADIATION
ELECTRON RINGS
ELECTRON TEMPERATURE
ELMO BUMPY TORUS
ELMO DEVICES
HEATING
HIGH-FREQUENCY HEATING
MAGNETIC MIRRORS
MICROWAVE RADIATION
OPEN PLASMA DEVICES
OPERATION
PLASMA
PLASMA CONFINEMENT
PLASMA DENSITY
PLASMA HEATING
POWER
RADIATIONS
STABILIZATION
THERMONUCLEAR DEVICES