Performance study of the TFTR diagnostic neutral beam for active charge exchange measurements

Technical Report · Sun Jun 01 04:00:00 EDT 1980

DOI:https://doi.org/10.2172/5172146· OSTI ID:5172146

Medley, S S; Goldston, R J; Towner, H H

A neutral beam source will be incorporated in the Tokamak Fusion Test Reactor (TFTR) charge exchange diagnostic to provide a time modulated, spatially localized enhancement of the charge exchange efflux. Two autonomous Charge Exchange Neutral Analyzer (CENA) systems are being designed for the TFTR. One system measures the plasma ion temperature along twelve vertical line-of-sight chords spaced approximately equidistantly across the torus minor diameter. The other system is dedicated primarily to measurement of ion phenomena associated with neutral beam injection heating and has a fan-like field of view along eight sight-lines in the equitorial plane. The neutral beam is steerable in order to access the viewing field of both CENA systems, though in general not simultaneously. The performance of the diagnostic neutral beam is evaluated to determine the optimal beam specifications for active charge exchange measurements. Using the optimal beam design parameters, the efficacy of the neutral doping is examined for both CENA systems over the envisioned range of the TFTR plasma density and temperature.

• Research Organization: Princeton Univ., NJ (USA). Plasma Physics Lab.
• DOE Contract Number: AM02-76CH03073
• OSTI ID: 5172146
• Report Number(s): PPPL-1673
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700102* -- Fusion Energy-- Plasma Research-- Diagnostics
ATOMIC BEAMS
BEAM INJECTION
BEAMS
CHARGE EXCHANGE
ION TEMPERATURE
NEUTRAL ATOM BEAM INJECTION
PLASMA DIAGNOSTICS
TFTR REACTORS
THERMONUCLEAR REACTORS
TOKAMAK TYPE REACTORS