Simulation of tokamak confinement problems on FM-1

Book · Mon Jan 01 04:00:00 EST 1973

OSTI ID:4416055

Chen, K; Meade, D; Okabayashi, M; Schmidt, J A; Yoshikawa, S

From third international symposium on toroidal plasma confinement; Garching, Germany (26 Mar 1973). Plasma corfinement was studied in FM-1 with magnetic configurations and plasma parameters that simulate microstability properties of tokamaks. The near-classical (pseudoclassical) confinement in the spherator mode of FM-1 becomes Bohm-like when the electron temperature is increased. Increasing the toroidal field by a factor of 4 to simulate a tokamak configuration causes the confinement to decrease by a factor of ~ 5. FM-1 was operated in three different magnetic configurations which were determined by the ratio of the currents which produced the toroidal, poloidal, and external vertical fields, respectively. Important properties of the field corfigurations arte summarized for a flux surface near maximum density gradient at the outer edge of the plasma. The results of these FM-1 tokamak-simulation experiments suggest that trapped-particle effects, most likely a dissipative trapped-particle instability, may limit the confinement on existing tokamaks to approximately 60 Bohm times. (GE)

• Research Organization: Princeton Univ., NJ
• NSA Number: NSA-29-009176
• OSTI ID: 4416055
• Country of Publication: Germany
• Language: English

Related Subjects

*FM DEVICES-- CONFINEMENT
*PLASMA SIMULATION-- FM DEVICES
*PLASMA-- CONFINEMENT
N70100 --Physics--Controlled Thermonuclear Research--Confinement & Heating
N70500* --Physics--Controlled Thermonuclear Research-- Kinetics (Theoretical)
PLASMA INSTABILITY
TOKAMAK DEVICES
TRAPPED-PARTICLE INSTABILITY