Throttle coil operation of TMX-U

Technical Report · Sat Jan 01 04:00:00 EST 1983

DOI:https://doi.org/10.2172/6361379· OSTI ID:6361379

Correll, D L; Byers, J A; Casper, T A

A tandem-mirror configuration with an axisymmetric central cell, similar to the geometry of MARS (Mirror Advanced Reactor Study) or the Kelley-TDF mode of MFTB-B, can be generated by inserting a 6-tesla, throttle coil in each end of the TMX-U central cell. The throttle coil geometry of TMX-U will test the physics issues associated with axisymmetric tandem-mirror reactors, such issues as: (1) increased radial confinement time for central-cell ions confined by axisymmetric mirror cells and electrostatic potentials; (2) theoretical limits set by the trapped particle instability for the required passing density between the central cell and the end-cell anchor; and (3) pumping of trapped particles within the thermal barrier and transition regions with methods other than neutral beams. The central-cell plasma parameters for the throttle coil geometry are evaluated for two operating points. The first requires heating hardware (neutral beams and ECRH) and vacuum performance at the TMX-U proposal level, yielding plasma parameters, central-cell betas, and plasma confinement exceeding those of the original TMX-U proposal. The second operating point, requiring approximately half the ECRH end-cell performance of the first, is predicted to equal the beta and to exceed the plasma pressure and confinement time of the central cell in the standard TMX-U geometry.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6361379
• Report Number(s): UCID-19650; ON: DE83009801
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700202* -- Fusion Power Plant Technology-- Magnet Coils & Fields
ELECTRIC COILS
ELECTRICAL EQUIPMENT
ENERGY BALANCE
EQUIPMENT
INSTABILITY
MAGNET COILS
MAGNETIC FIELD CONFIGURATIONS
MAGNETIC MIRRORS
OPEN PLASMA DEVICES
OPTIMIZATION
PLASMA INSTABILITY
PLASMA MACROINSTABILITIES
PLUGGING
THERMONUCLEAR DEVICES
TMX DEVICES
TRAPPED-PARTICLE INSTABILITY
TRAPPING