Optical pyrometry applied to the neutral beam interlock system for Doublet III

Conference · Mon Oct 01 04:00:00 EDT 1979

OSTI ID:5694784

McMahon, T. R.; Kamperschroer, J. H.; Colleraine, A. P.

The neutral beam injection system for Doublet III has been designed with curved grid ion sources and near-perpendicular injection. Given these conditions the neutral beam power loading on the inside wall of the vacuum chamber can be as high as 5 kW/cm/sup 2/ if no plasma is present. To protect the tokamak against the neutral beam under conditions where the plasma density is diminished, a fast infrared detector system is being developed. This device will monitor the beam hot spot on the armor plate and provide an interrupt signal when the temperature rises above a present value. The characteristics of a detector able to meet the desired performance specifications while operating in a tokamak environment are described.

• Research Organization: General Atomic Co., San Diego, CA (USA)
• DOE Contract Number: AT03-76ET51011
• OSTI ID: 5694784
• Report Number(s): GA-A-15640; CONF-791102-15
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700209* -- Fusion Power Plant Technology-- Component Development & Materials Testing
BEAM INJECTION
DOUBLET REACTORS
INFRARED SPECTROMETERS
MEASURING INSTRUMENTS
MONITORING
NEUTRAL ATOM BEAM INJECTION
NEUTRAL BEAM SOURCES
POWER DENSITY
PYROMETERS
SHIELDING
SPECTROMETERS
THERMONUCLEAR REACTORS
TOKAMAK TYPE REACTORS
WALL LOADING