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Design and construction of a fast ion loss Faraday cup array diagnostic for Joint European Torus

Journal Article · · Review of Scientific Instruments
DOI:https://doi.org/10.1063/1.1788876· OSTI ID:20636685
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  1. Princeton Plasma Physics Laboratory, P.O. Box 451, Princeton, New Jersey 08543-0451 (United States)
A thin foil Faraday cup array is being built to measure the loss of 3.5 MeV alpha particles and MeV ion cyclotron heating tail ions on Joint European Torus. It will consist of nine detectors spread over five different poloidal locations and three radial positions. They will measure the poloidal distribution and radial scrape off of the losses. The detectors will be comprised of four layers of thin (2.5 {mu}m) Ni foil, giving some resolution of the lost particle energy distribution as different ranges of energies will stop in different layers of the detector. One detector will utilize eight thinner (1.0 {mu}m) foils to obtain a better-resolved energy distribution. These detectors will accept particles incident up to 45 deg. from the normal to the foils.
OSTI ID:
20636685
Journal Information:
Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 10 Vol. 75; ISSN 0034-6748; ISSN RSINAK
Country of Publication:
United States
Language:
English