Artigo de peri??dico
Characterization of multilayer Thick-GEM geometries as 10B converters aiming thermal neutron detection
Registro en:
2100-014X
174
10.1051/epjconf/201817401012
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Autor
LUZ, H.N. da
SOUZA, F.A.
MORALLES, M.
CARLIN, N.
OLIVEIRA, R.A.N.
BREGANT, M.
SUAIDE, A.A.P.
CHUBACI, J.F.D.
MATSUOKA, M.
SILVA, T.F.
MORO, M.V.
RODRIGUES, C.L.
MUNHOZ, M.G.
Resumen
Boron-based thermal neutron detectors have recently regained some attention from the instrumentation community as a strong alternative to helium-3 detectors. From the existing concepts exploiting boron layers in position sensitive detectors, the Cascade [1] is the one that takes full advantage of the 2D capabilities of gaseous detectors, with the position resolution not limited by the architecture of the detector. In this work, a proposal for the Cascade detector, based on Thick-GEMs is presented, together with some preliminary studies of the suitable pitch that optimizes the neutron conversion efficiency, while keeping the collection efficiency intact. The characterization of Thick-GEM prototypes produced in Brazil with hole pitch from 0.75 to 3 mm shows that these devices already present a stable performance at low gains, also resulting in fair energy resolution, when cascaded with a standard KaptonTM 50 ??m GEM. Results of the first attempts of boron film depositions with Ion Beam Assisted Deposition and characterization by Ion Beam Analysis are also presented.