Book/Report

FZJ-2018-02272

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Optimierung sphärischer Ionisationskammern für die Neutronendiagnostik an Tokamakanlagen

Hoenen, F. (Corresponding author)FZJ*

1983
Kernforschungsanlage Jülich, Verlag Jülich

Please use a persistent id in citations: http://hdl.handle.net/2128/17959

Report No.: Juel-1848

Abstract: With the recently built large Tokamaks and the continued advancement in the field of fusion oriented Plasma Physics the realization of a fusion reactor approaches, so that neutron diagnostics gain more importance. With their aid it is possible to get fundamental information from a DD - of DT-Plasma concerning the reaction kinetics and the ion temperature. For the investigation of neutron emission from fusion plasmas Pulse-Ion-Chamber are favored because of their high temporal resolution, the availability of results immedately after the discharge and their insensitivity to hard X-rays. However to measure ion temperatures below 2 keV with the aid of neutron spectroscopy the detectors have to be improved. Difficulties arise from the fact that in Pulse-Ion-Chambers the pulse height is a function of the position in the chamber where the ion pairs are produced (Induction effect). It will be shown that the induction effect is smaller in spherical ionisation chambers than in cylindrical ones. This means an increase in energy resolution so that neutrons from the D(D,n) $^{3}$He reaction can be analysed with an energy resolution of better than 3 percent in spherical chambers.

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Contributing Institute(s):

1. Publikationen vor 2000 (PRE-2000)

Research Program(s):

1. 899 - ohne Topic (POF3-899) (POF3-899)

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Database coverage:

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