Status of tandem-mirror confinement

Conference · Tue Aug 30 04:00:00 EDT 1983

OSTI ID:5689359

Baldwin, D E

Recent end-stopping experiments in TMX-Upgrade show strong plugging of the central cell by lower-density plugs, requiring both electron-cyclotron heating (ECRH) and 47/sup 0/ neutral-beam injection, consistent with the thermal-barrier concept. These experiments have low density (n < 10/sup 12/ cm/sup -3/) due to inefficient ECRH power coupling. Hot-ion and hot-electron buildup are consistent with Fokker-Planck calculations. No ion-cyclotron activity is observed in the plugs; occasional electron-cyclotron activity is observed. With plugging, axial lifetimes (tau/sub parallel/ > 40 ms) are larger than radial (tau/sub perpendicular/ = 5 to 10 ms) due to observed non-ambipolar ion transport. Recent tandem-mirror theoretical activities are also surveyed.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5689359
• Report Number(s): UCRL-89771; CONF-830908-5; ON: DE83017369
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700104* -- Fusion Energy-- Plasma Research-- Plasma Kinetics-Experimental-- (-1987)
CYCLOTRON INSTABILITY
DOCUMENT TYPES
ECR HEATING
HEATING
HIGH-FREQUENCY HEATING
INSTABILITY
MAGNETIC MIRRORS
OPEN PLASMA DEVICES
PLASMA HEATING
PLASMA INSTABILITY
PLASMA MICROINSTABILITIES
PLUGGING
REVIEWS
TANDEM MIRRORS
THERMAL BARRIERS
THERMONUCLEAR DEVICES
TMX DEVICES