Data di Pubblicazione:
2010
Citazione:
HPGe detectors timing using pulse shape analysis techniques / F.C.L. Crespi, V. Vandone, S. Brambilla, F. Camera, B. Million, S. Riboldi, O. Wieland. - In: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION A, ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT. - ISSN 0168-9002. - 620:2/3(2010 Aug), pp. 299-304.
Abstract:
In this work the Pulse Shape Analysis has been used to improve the time resolution of High Purity Germanium (HPGe) detectors. A set of time aligned signals was acquired in a coincidence measurement using a coaxial HPGe and a cerium-doped lanthanum chloride (LaGl(3):Ce) scintillation detector. The analysis using a Constant Fraction Discriminator (CFD) time output versus the HPGe signal shape shows that time resolution ranges from 2 to 12 ns depending on the slope in the initial part of the signal. An optimization procedure of the CFD parameters gives the same final time resolution (8 ns) as the one achieved after a correction of the CFD output based on the current pulse maximum position. Finally, an algorithm based on Pulse Shape Analysis was applied to the experimental data and a time resolution between 3 and 4 ns was obtained, corresponding to a 50% improvement as compared with that given by standard CFDs.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
GAMMA-RAY TRACKING ; PROTOTYPE DETECTORS ; GE(LI) DETECTOR ; AGATA ; GRETA ; ARRAY ; PERFORMANCE
Elenco autori:
F.C.L. Crespi, V. Vandone, S. Brambilla, F. Camera, B. Million, S. Riboldi, O. Wieland
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