Proton response of CEPA4: A novel LaBr3(Ce)-LaCl3(Ce) phoswich array for high-energy gamma and proton spectroscopy

Nacher, E.
M\ue5rtensson, Mikael
Tengblad, O.
Alvarez-Pol, H.
Bendel, M.
Cortina-Gil, D.
Gernhauser, R.
Le Bleis, T.
Maj, A.
Nilsson, Thomas
Perea, A.
Pietras, B.
Ribeiro, G.
del Rio, J. S.
Rosado, J. S.
Heinz, Andreas Martin
Szpak, B.
Winkel, M.
Zieblinski, M.

Open link

Publication date

January 2015

DOI

10.1016/j.nima.2014.09.067

Publisher

Elsevier BV

Abstract

A new phoswich array, for the detection of high-energy protons and gamma rays from nuclear reactions, has been built. This new detector consists of four individual closely packed scintillator detectors, each of them made of 4 cm of LaBr3(Ce) and G cm of LaCl3(Ce) in phoswich configuration (optically coupled and with a common readout). In this paper we report on the results of a beam test performed at the Bronowice Cyclotron Centre (CCB) in Krakow, showing the response of this versatile instrument to high energy protons (70-230 MeV). Furthermore, for the first time we prove that we can reconstruct the original energy of fast protons (E > 200 MeV) which pass through the total length of the crystal while still retaining a good energy resolutio...