Status of tandem-mirror confinement

Conference · Tue Aug 30 00:00:00 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
• Resource Relation: Conference: 11. European conference on controlled fusion and plasma physics, Aachen, F.R. Germany, 5 Sep 1983; Other Information: Portions are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

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