Performances of 4H-SiC Schottky diodes as neutron detectors

Alessandro Lo Giudice, Floriana Fasolo, Elisabetta Durisi, Claudio Manfredotti, Ettore Vittone, Franco Fizzotti, Alba Zanini, Giancarlo Rosi

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Abstract

Large area 4H-SiC Schottky diodes equipped with a6LiF converter were tested as neutron detectors in the epithermal column realized for Boron Neutron Capture Therapy (BNCT) applications at the fast reactor TAPIRO (ENEA Casaccia Roma). The neutron spectra were assessed using the Monte Carlo code MCNP-4C. The performances of SiC detectors were evaluated with neutron fluences in the range of 109-1013cm-2which is typical for BNCT. Spectra of alpha and tritium particles generated by6Li(n,α)3H reaction were collected at various neutron fluences and spectra obtained by interposing polyethylene moderators of different thickness. Only weak damaging effects primarily due to the alpha particles were observed; at neutron fluence of 1013cm-2the count rate decreased by <0.3%. The experimental results were compared with the theoretical ones calculated using MCNP-4C and SRIM codes. © 2007 Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)177 - 180
Number of pages4
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume583
Issue number1
DOIs
Publication statusPublished - 11 Dec 2007
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Instrumentation

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