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331379.1 [No comment] 05.03.2008 14:01 Released
331379.0 [No comment] 28.01.2008 14:00 Released

ID: 331379.1, MPI für Kernphysik / Neutrino Physics
Pulse-shape discrimination with the Counting Test Facility
Authors:Back, H. O.; Balata, M.; Bellini, G.; Benziger, J.; Bonetti, S.; Caccianiga, B.; Calaprice, F.; Dalnoki-Veress, F.; D'Angelo, D.; de Bellefon, A.; de Kerret, H.; Derbin, A.; Etenko, A.; Fomenko, K.; Ford, R.; Franco, D.; Galbiati, C.; Gazzana, A.; Giammarchi, M. G.; Goeger, M.; Goretti, A.; Grieb, C.; Hardy, S.; Ianni, A.; Ianni, A. M.; Korga, G.; Kozlov, Y.; Kryn, D.; Laubenstein, M.; Leung, M.; Litvinovich, E.; Lombardi, P.; Ludhova, L.; Machulin, I.; Manno, I.; Manuzio, D.; Manuzio, G.; Masetti, F.; McCarty, K.; Meroni, E.; Miramonti, L.; Misiaszek, M.; Montanari, D.; Monzani, M. E.; Muratova, V.; Niedermeier, L.; Oberauer, L.; Obolensky, M.; Ortica, F.; Pallavicini, M.; Papp, L.; Perasso, L.; Pocar, A.; Raghavan, R. S.; Ranucci, G.; Razeto, A.; Sabelnikov, A.; Salvo, C.; Schönert, S.; Shutt, T.; Simgen, H.; Skorokhvatov, M.; Smirnov, O.; Sonnenschein, A.; Sotnikov, A.; Sukhotin, A.; Suvorov, Y.; Tarasenkov, V.; Tartaglia, R.; Testera, G.; Vignaud, D.; Vogelaar, R. B.; von Feilitzsch, F.; Williams, B.; Wojcik, M.; Zaimidoroga, O.; Zavatarelli, S.; Zuzel, G.
Corporate body:Borexino Collaboration**
Date of Publication (YYYY-MM-DD):2008-01-01
Title of Journal:Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Issue / Number:1
Start Page:98
End Page:113
Review Status:not specified
Audience:Experts Only
Abstract / Description:Pulse shape discrimination (PSD) is one of the most distinctive features of liquid scintillators. Since the introduction of the scintillation technique in the
field of particle detection, many studies have been
carried out to characterize intrinsic properties of the
most common liquid scintillator mixtures in this
respect. Several application methods and algorithms
capable of achieving optimum discrimination
performances have been developed. However, the vast
majority of these studies have been performed on
samples of small dimensions. The Counting Test
Facility, prototype of the solar neutrino experiment
Borexino, as a 4 ton spherical scintillation detector
immersed in 1000 tons of shielding water, represents a
unique opportunity to extend the small-sample PSD
studies to a large-volume set-up. Specifically, in this
work we consider two different liquid scintillation
mixtures employed in CTF, illustrating for both the PSD
characterization results obtained either with the
processing of the scintillation waveform through the
optimum Gatti's method, or via a more conventional
discrimination approach based on the charge content of
the scintillation tail. The outcomes of this study,
while interesting per se, are also of paramount
importance in view of the expected Borexino detector
performances, where PSD will be an essential tool in
the framework of the background rejection strategy
needed to achieve the required sensitivity to the solar
neutrino signals.
External Publication Status:published
Document Type:Article
Affiliations:MPI für Kernphysik/Group of M. Lindner
External Affiliations:aINFN Laboratori Nazionali del Gran Sasso, SS 17 bis Km 18+910, I-67010 Assergi(AQ), Italy
bDipartimento di Fisica Università and INFN, Milano, Via Celoria, 16 I-20133 Milano, Italy
cDepartment of Chemical Engineering, A-217 Engineering Quadrangle, Princeton, NJ 08544-5263, USA
dDepartment of Physics, Princeton University, Jadwin Hall, Washington Road, Princeton, NJ 08544-0708, USA
eTechnische Universität München, James Franck Strasse, E15 D-85747 Garching, Germany
fAstroparticule et Cosmologie APC, 10, rue Alice Domon et Léonie Duquet, 75205 Paris Cedex 13, France
gJoint Institute for Nuclear Research, 141980 Dubna, Russia
hRRC Kurchatov Institute, Kurchatov Square 1, 123182 Moscow, Russia
jKFKI-RMKI, Konkoly Thege ut 29-33, H-1121 Budapest, Hungary
kDipartimento di Fisica Università and INFN, Genova, Via Dodecaneso, 33 I-16146 Genova, Italy
lDipartimento di Chimica Università and INFN, Perugia, Via Elce di Sotto, 8 I-06123 Perugia, Italy
mPhysics Department, Virginia Polytechnic Institute and State University, Robeson Hall, Blacksburg, VA 24061-0435, USA
nM. Smoluchowski Institute of Physics, Jagellonian University, PL-30059 Krakow, Poland