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Title: Solid State Neutral Particle Analyzer Array on NSTX

Abstract

A Solid State Neutral Particle Analyzer (SSNPA) array has been installed on the National Spherical Torus Experiment (NSTX). The array consists of four chords viewing through a common vacuum flange. The tangency radii of the viewing chords are 60, 90, 100, and 120 cm. They view across the three co-injection neutral beam lines (deuterium, 80 keV (typ.) with tangency radii 48.7, 59.2, and 69.4 cm) on NSTX and detect co-going energetic ions. A silicon photodiode used was calibrated by using a mono-energetic deuteron beam source. Deuterons with energy above 40 keV can be detected with the present setup. The degradation of the performance was also investigated. Lead shots and epoxy are used for neutron shielding to reduce handling any hazardous heavy metal. This method also enables us to make an arbitrary shape to be fit into the complex flight tube.

Authors:
; ; ; ;
Publication Date:
Research Org.:
Princeton Plasma Physics Lab., Princeton, NJ (US)
Sponsoring Org.:
USDOE Office of Science (SC) (US)
OSTI Identifier:
827998
Report Number(s):
PPPL-3957
TRN: US0403617
DOE Contract Number:  
AC02-76CH03073
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 13 May 2004
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; 74 ATOMIC AND MOLECULAR PHYSICS; DEUTERIUM; DEUTERON BEAMS; DEUTERONS; NEUTRAL PARTICLE ANALYZERS; NEUTRONS; PERFORMANCE; PHOTODIODES; SHAPE; SHIELDING; SILICON; TAIL IONS; CHARGE EXCHANGE; DIAGNOSTICS; TOKAMAKS, NSTX

Citation Formats

K. Shinohara, D.S. Darrow, A.L. Roquemore, S.S. Medley, and F.E. Cecil. Solid State Neutral Particle Analyzer Array on NSTX. United States: N. p., 2004. Web. doi:10.2172/827998.
K. Shinohara, D.S. Darrow, A.L. Roquemore, S.S. Medley, & F.E. Cecil. Solid State Neutral Particle Analyzer Array on NSTX. United States. doi:10.2172/827998.
K. Shinohara, D.S. Darrow, A.L. Roquemore, S.S. Medley, and F.E. Cecil. Thu . "Solid State Neutral Particle Analyzer Array on NSTX". United States. doi:10.2172/827998. https://www.osti.gov/servlets/purl/827998.
@article{osti_827998,
title = {Solid State Neutral Particle Analyzer Array on NSTX},
author = {K. Shinohara and D.S. Darrow and A.L. Roquemore and S.S. Medley and F.E. Cecil},
abstractNote = {A Solid State Neutral Particle Analyzer (SSNPA) array has been installed on the National Spherical Torus Experiment (NSTX). The array consists of four chords viewing through a common vacuum flange. The tangency radii of the viewing chords are 60, 90, 100, and 120 cm. They view across the three co-injection neutral beam lines (deuterium, 80 keV (typ.) with tangency radii 48.7, 59.2, and 69.4 cm) on NSTX and detect co-going energetic ions. A silicon photodiode used was calibrated by using a mono-energetic deuteron beam source. Deuterons with energy above 40 keV can be detected with the present setup. The degradation of the performance was also investigated. Lead shots and epoxy are used for neutron shielding to reduce handling any hazardous heavy metal. This method also enables us to make an arbitrary shape to be fit into the complex flight tube.},
doi = {10.2172/827998},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu May 13 00:00:00 EDT 2004},
month = {Thu May 13 00:00:00 EDT 2004}
}

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