학술논문
Characterization of Diamond and Silicon Carbide Detectors With Fission Fragments
Document Type
article
Author
M. L. Gallin-Martel; Y. H. Kim; L. Abbassi; A. Bes; C. Boiano; S. Brambilla; J. Collot; G. Colombi; T. Crozes; S. Curtoni; D. Dauvergne; C. Destouches; F. Donatini; L. Gallin-Martel; O. Ghouini; J. Y. Hostachy; Ł. W. Iskra; M. Jastrzab; G. Kessedjian; U. Köster; A. Lacoste; A. Lyoussi; S. Marcatili; J. F. Motte; J. F. Muraz; T. Nowak; L. Ottaviani; J. Pernot; A. Portier; W. Rahajandraibe; M. Ramdhane; M. Rydygier; C. Sage; A. Tchoualack; L. Tribouilloy; M. Yamouni
Source
Frontiers in Physics, Vol 9 (2021)
Subject
Language
English
ISSN
2296-424X
Abstract
Experimental fission studies for reaction physics or nuclear spectroscopy can profit from fast, efficient, and radiation-resistant fission fragment (FF) detectors. When such experiments are performed in-beam in intense thermal neutron beams, additional constraints arise in terms of target-detector interface, beam-induced background, etc. Therefore, wide gap semi-conductor detectors were tested with the aim of developing innovative instrumentation for such applications. The detector characterization was performed with mass- and energy-separated fission fragment beams at the ILL (Institut Laue Langevin) LOHENGRIN spectrometer. Two single crystal diamonds, three polycrystalline and one diamond-on-iridium as well as a silicon carbide detector were characterized as solid state ionization chamber for FF detection. Timing measurements were performed with a 500-µm thick single crystal diamond detector read out by a broadband amplifier. A timing resolution of ∼10.2 ps RMS was obtained for FF with mass A = 98 at 90 MeV kinetic energy. Using a spectroscopic preamplifier developed at INFN-Milano, the energy resolution measured for the same FF was found to be slightly better for a ∼50-µm thin single crystal diamond detector (∼1.4% RMS) than for the 500-µm thick one (∼1.6% RMS), while a value of 3.4% RMS was obtained with the 400-µm silicon carbide detector. The Pulse Height Defect (PHD), which is significant in silicon detectors, was also investigated with the two single crystal diamond detectors. The comparison with results from α and triton measurements enabled us to conclude that PHD leads to ∼50% loss of the initial generated charge carriers for FF. In view of these results, a possible detector configuration and integration for in-beam experiments has been discussed.