Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aps..apri16002a&link_type=abstract
American Physical Society, April Meeting, Jointly Sponsored with the High Energy Astrophysics Division (HEAD) of the American As
Astronomy and Astrophysics
Astrophysics
Scientific paper
We are investigating thin foil Faraday collectors as a diagnostic for lost alpha particles from high yield d-t tokamak fusion plasmas. One advantage of this concept is the predicted ability to operate under fairly high neutron/gamma radiation backgrounds. We have tested this prediction by measuring the current from a thin (2.5 n) Ni foil placed in the core of the TRIGA fission reactor at the Denver Federal Center. At a maximum steady state power of 950 kW (1E13 n/cm2/s) a current of 1.2 nA/cm2 was measured. This measured current at the maximum power is somewhat larger than the calculated current (0.5 nA/cm2). These results, future planned measurements, and the application of this diagnostic to proposed burning plasma (BPX) experiments will be discussed.
Aakhus-Witt Andy
Cecil Ed
Debay Tim
Hawbaker James
Sayers Jack
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