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A 14 MeV neutron spectrometer, based on the principal of the proton recoil telescope, has been installed as a DT plasma diagnostic at JET. The device comprizes three identical telescope modules arranged one behind the other, to increase efficiency without worsening resolution. It views the plasma along a horizontal line of sight. The total efficiency is 7.05X10(-5) counts per [neutron per cm(2), and the calculated response function has a FWHM of 2.2 % at an incident neutron energy of 14.1 MeV. The spectrometer was operational throughout the recent Deuterium-Tritium Experiment No.1 and selected neutron spectra have been analysed in terms of the contributions from the various neutron production mechanisms.

Additional information

Authors: HAWKES N P ET AL, JET Joint Undertaking, Abingdon, Oxfordshire (GB)
Bibliographic Reference: Article: A 14 MeV Neutron Spectrometer for the JET Deuterium-Tritium Experiments, JET-P(1998)30, 1-6
Record Number: 199910422 / Last updated on: 1999-03-19
Original language: en
Available languages: en
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