Open AccessThe TFTR E Parallel B Spectrometer for Mass and Energy Resolved Multi-Ion Charge Exchange Diagnostics
Author(s) -
A. L. Roquemore,
S. S. Medley
Publication year - 1998
Language(s) - English
Resource type - Reports
DOI - 10.2172/4580
Subject(s) - plasma , tokamak , tokamak fusion test reactor , spectrometer , atomic physics , plasma diagnostics , ion , cyclotron , mass spectrometry , microchannel plate detector , detector , nuclear fusion , nuclear physics , physics , optics , quantum mechanics
The Charge Exchange Neutral Analyzer diagnostic for the Tokamak Fusion Test Reactor was designed to measure the energy distributions of both the thermal ions and the supra thermal populations arising from neutral-beam injection and ion cyclotron radio-frequency heating. These measurements yield the plasma ion temperature, as well as several other plasma parameters necessary to provide an understanding of the plasma condition and the performance of the auxiliary heating methods. For this application, a novel charge-exchange spectrometer using a dee-shaped region of parallel electric and magnetic fields was developed at the Princeton Plasma Physics Laboratory. The design and performance of this spectrometer is described in detail, including the effects of exposure of the microchannel plate detector to magnetic fields, neutrons, and tritium