Heidelberg 2015 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 14: Instrumentation 6
HK 14.4: Vortrag
Montag, 23. März 2015, 18:00–18:15, M/HS4
Background suppression in phoswich detectors — •Anna-Lena Hartig1, Michael Bendel2, Guillermo Fernández Martínez1, Roman Gernhäuser2, Alexander Ignatov1, Enrique Nácher3, Thorsten Kröll1, Han-Bum Rhee1, and Olof Tengblad3 for the R3B collaboration — 1Institut für Kernphysik, TU Darmstadt, Germany — 2Physik-Dept. E12, TU München, Germany — 3CSIC, Madrid, Spain
As part of the R3B set-up, CALIFA is supposed to detect γ-rays as well as
light charged particles and will cover the entire target region. While
the barrel part is currently assembled, a design for the Endcap was recently
proposed. It will be mainly formed out of CsI crystals, whereas the smaller
polar angles will be covered by phoswich detectors. These detectors
consist of LaBr3(Ce) and LaCl3(Ce) crystals which are optically coupled. A simulation for protons at expected energies makes it possible to apply cuts
on the measured kinematics in order to identify significant part of the
background stemming from nuclear reactions. The method and the result for the
background suppression will be presented for phoswich detectors.
Supported by BMBF under contracts 06DA90240I, 05P12RDFN8, 05P12WOFNF, and by HIC
for
FAIR.