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Title: Design of Faraday cup ion detectors built by thin film deposition

Abstract

Thin film Faraday cup detectors can provide measurements of fast ion loss from magnetically confined fusion plasmas. These multilayer detectors can resolve the energy distribution of the lost ions in addition to giving the total loss rate. Prior detectors were assembled from discrete foils and insulating sheets. Outlined here is a design methodology for creating detectors using thin film deposition that are suited to particular scientific goals. The intention is to use detectors created by this method on JET and NSTX-U. The detectors will consist of alternating layers of aluminum and silicon dioxide, with layer thicknesses chosen to isolate energies of interest. Thin film deposition offers the advantage of relatively simple and more mechanically robust construction compared to other methods, as well as allowing precise control of film thickness. Furthermore, this depositional fabrication technique places the layers in intimate thermal contact, providing for three-dimensional conduction and dissipation of the ion-produced heating in the layers, rather than the essentially two-dimensional heat conduction in the discrete foil stack implementation.

Authors:
; ;
  1. Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Publication Date:
DOE Contract Number:  
AC02-09CH11466
Product Type:
Dataset
Research Org.:
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Fusion Energy Sciences (FES)
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; Fast ion loss Faraday cups Thin films
Keywords:
Fast ion loss Faraday cups Thin films
OSTI Identifier:
1367550
DOI:
10.11578/1367550

Citation Formats

Szalkowski, G.A., Darrow, D.S., and Cecil, F.E. Design of Faraday cup ion detectors built by thin film deposition. United States: N. p., 2017. Web. doi:10.11578/1367550.
Szalkowski, G.A., Darrow, D.S., & Cecil, F.E. Design of Faraday cup ion detectors built by thin film deposition. United States. doi:10.11578/1367550.
Szalkowski, G.A., Darrow, D.S., and Cecil, F.E. 2017. "Design of Faraday cup ion detectors built by thin film deposition". United States. doi:10.11578/1367550. https://www.osti.gov/servlets/purl/1367550. Pub date:Sun Jan 01 00:00:00 EST 2017
@article{osti_1367550,
title = {Design of Faraday cup ion detectors built by thin film deposition},
author = {Szalkowski, G.A. and Darrow, D.S. and Cecil, F.E.},
abstractNote = {Thin film Faraday cup detectors can provide measurements of fast ion loss from magnetically confined fusion plasmas. These multilayer detectors can resolve the energy distribution of the lost ions in addition to giving the total loss rate. Prior detectors were assembled from discrete foils and insulating sheets. Outlined here is a design methodology for creating detectors using thin film deposition that are suited to particular scientific goals. The intention is to use detectors created by this method on JET and NSTX-U. The detectors will consist of alternating layers of aluminum and silicon dioxide, with layer thicknesses chosen to isolate energies of interest. Thin film deposition offers the advantage of relatively simple and more mechanically robust construction compared to other methods, as well as allowing precise control of film thickness. Furthermore, this depositional fabrication technique places the layers in intimate thermal contact, providing for three-dimensional conduction and dissipation of the ion-produced heating in the layers, rather than the essentially two-dimensional heat conduction in the discrete foil stack implementation.},
doi = {10.11578/1367550},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2017},
month = {1}
}

Dataset:

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