Ohmic Heating System for the TFTR Tokamak
Conference
·
OSTI ID:5223262
The TFTR Ohmic Heating (OH) System will apply 140,000 volt impulses upon the OH coils to start the plasma. In order to reduce the voltage stress to ground on the OH coils to 12 kV without changing the magnetic field induced by the OH system in the plasma, six d-c current interrupters will be applied to six entry points in the OH coil system. And in order to impart a nearly rectangular shape to these impulses, the voltage determining elements will be nonlinear resistances placed in parallel with the interrupters. These nonlinear resistors, made of semiconducting material, are not normally used in repetitive or continuous duty, and their proper functioning is crucial to the reliable operation of the system. The system described herein, is being revised owing to the impact of revisions to the Toroidal Field Coil System, and to refinements to the OH System design.
- Research Organization:
- Princeton Univ., N.J. (USA). Plasma Physics Lab.; Ebasco Services, Inc., New York (USA)
- DOE Contract Number:
- EY-76-C-02-3073
- OSTI ID:
- 5223262
- Report Number(s):
- CONF-771029-173
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700203* -- Fusion Power Plant Technology-- Power Supplies
Energy Storage
ANNULAR SPACE
BEAM INJECTION
CIRCUIT BREAKERS
CONFIGURATION
CURRENTS
DIRECT CURRENT
ELECTRIC COILS
ELECTRIC CURRENTS
ELECTRICAL EQUIPMENT
ELECTRONIC EQUIPMENT
EQUIPMENT
EQUIPMENT PROTECTION DEVICES
HEATING
JOULE HEATING
MAGNET COILS
NEUTRAL ATOM BEAM INJECTION
PLASMA HEATING
POWER SUPPLIES
TFTR REACTOR
THERMONUCLEAR REACTORS
TOKAMAK TYPE REACTORS
TOROIDAL CONFIGURATION
VACUUM SYSTEMS
700203* -- Fusion Power Plant Technology-- Power Supplies
Energy Storage
ANNULAR SPACE
BEAM INJECTION
CIRCUIT BREAKERS
CONFIGURATION
CURRENTS
DIRECT CURRENT
ELECTRIC COILS
ELECTRIC CURRENTS
ELECTRICAL EQUIPMENT
ELECTRONIC EQUIPMENT
EQUIPMENT
EQUIPMENT PROTECTION DEVICES
HEATING
JOULE HEATING
MAGNET COILS
NEUTRAL ATOM BEAM INJECTION
PLASMA HEATING
POWER SUPPLIES
TFTR REACTOR
THERMONUCLEAR REACTORS
TOKAMAK TYPE REACTORS
TOROIDAL CONFIGURATION
VACUUM SYSTEMS