Neutron recognition in the LAND detector for large neutron multiplicity

Adrich, P.; Aumann, T.; Bacri, C. O.; Barczyk, T.; Bassini, R.; Bianchin, S.; Boiano, C.; Boretzky, K.; Boudard, A.; Brzychczyk, J.; Chbihi, A.; Cibor, J.; Czech, B.; De Napoli, M.; Ducret, J. -E.; Emling, H.; Frankland, J. D.; Fèvre, A. Le; Gentil, E. Le; Gorbinet, T.; Hellström, M.; Henzlova, D.; Hlavac, S.; Immè, J.; Iori, I.; Johansson, H.; Kezzar, K.; Kupny, S.; Lafriakh, A.; Leifels, Y.; Leray, S.; Lynch, W. G.; Lynen, U.; Lühning, J.; Majka, Z.; Mocko, M.; Mykulyak, A.; Müller, W. F. J.; Orth, H.; Otte, A. N.; Palit, R.; Panebianco, S.; Pawłowski, P.; Pullia, A.; Raciti, G.; Rapisarda, E.; Rossi, D.; Salsac, M. -D.; Sann, H.; Schwarz, C.; Sfienti, C.; Simon, H.; Sümmerer, K.; Trautmann, W.; Tsang, M. B.; Verde, G.; Veselsky, M.; Volant, C.; Wallace, M.; Weick, H.; Wiechula, J.; Wieloch, A.; Zwiegliński, B.; Łukasik, J.

research

Neutron recognition in the LAND detector for large neutron multiplicity

Abstract

The performance of the LAND neutron detector is studied. Using an event-mixing technique based on one-neutron data obtained in the S107 experiment at the GSI laboratory, we test the efficiency of various analytic tools used to determine the multiplicity and kinematic properties of detected neutrons. A new algorithm developed recently for recognizing neutron showers from spectator decays in the ALADIN experiment S254 is described in detail. Its performance is assessed in comparison with other methods. The properties of the observed neutron events are used to estimate the detection efficiency of LAND in this experiment.Comment: 16 pages, 8 figure