Details

Autor(en) / Beteiligte

• Gallin-Martel, M. L.
• Kim, Y. H.
• Abbassi, L.
• Bes, A.
• Boiano, C.
• Brambilla, S.
• Collot, J.
• Colombi, G.
• Crozes, T.
• Curtoni, S.
• Dauvergne, D.
• Destouches, C.
• Donatini, F.
• Gallin-Martel, L.
• Ghouini, O.
• Hostachy, J. Y.
• Iskra, Ł. W.
• Jastrzab, M.
• Kessedjian, G.
• Köster, U.
• Lacoste, A.
• Lyoussi, A.
• Marcatili, S.
• Motte, J. F.
• Muraz, J. F.
• Nowak, T.
• Ottaviani, L.
• Pernot, J.
• Portier, A.
• Rahajandraibe, W.
• Ramdhane, M.
• Rydygier, M.
• Sage, C.
• Tchoualack, A.
• Tribouilloy, L.
• Yamouni, M.

Titel

Characterization of Diamond and Silicon Carbide Detectors With Fission Fragments

Ist Teil von

• Frontiers in physics, 2021-09, Vol.9

Ort / Verlag

Frontiers

Erscheinungsjahr

2021

Link zum Volltext

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• 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.