Open Access

Konstanze Boretzky, Igor Gašparić, Michael Heil, Jan Mayer, Andreas Heinz, Christoph Caesar, Dmytro Kresan, Haik Simon, Hans Toshihide Törnqvist, Daniel Körper, G. D. Alkhazov, Leyla Atar, Thomas Aumann, Daniel Bemmerer, S. V. Bondarev, Lukas T. Bott, Santosh Chakraborty, Madalin I. Cherciu, Leonid V. Chulkov, Mircea Ciobanu, Ushasi Datta, Enrico De Filippo, Christiaan Douma, Jörn Dreyer, Zoltán Elekes, Joachim Enders, Daniel Galaviz Redondo, Elena Irene Geraci, Brunilde Gnoffo, Kathrin Göbel, Victor L. Golovtsov, Diégo González-Díaz, N. Gruzinsky, Tanja Heftrich, Henning Heggen, Jörg Hehner, Thomas Hensel, Elena Hoemann, Matthias Holl, Andrea Horvat, Ákos Horváth, Günter Ickert, Deša Jelavić-Malenica, Håkan T. Johansson, Björn Jonson, Julian Kahlbow, Nasser Kalantar-Nayestanaki, Aleksandra Kelić-Heil, Kempe Mathias, Karsten Koch, Nikolai Kozlenko, Anatoly G. Krivshich, Nikolaus Kurz, Viacheslav A. Kouznetsov, Christoph Langer, Yvonne Leifels, Ivana Lihtar, Bastian Löher, Jorge Machado, Nunzia Simona Martorana, Kenjiro Miki, Thomas Nilsson, E. M. Orischin, Emanuele Vincenzo Pagano, Sara Pirrone, Giuseppe Politi, Petru-Mihai Potlog, Anisur Rahaman, René Reifarth, Catherine Rigollet, Marko Röder, Dominic M. Rossi, Paolo Russotto, Deniz Savran, Heiko Scheit, Fabia Schindler, Daniel Stach, Emil Stan, J. Stomvall Gill, Pamela Teubig, Marina Trimarchi, Lev Uvarov, Meiko Volknandt, S. Volkov, Andreas Wagner, Vladimír Wagner, Staffan Wranne, Dmitry Yakorev, Lorenzo Zanetti, Andreas Zilges, Kai Zuber

• NeuLAND (New Large-Area Neutron Detector) is the next-generation neutron detector for the R3B (Reactions with Relativistic Radioactive Beams) experiment at FAIR (Facility for Antiproton and Ion Research). NeuLAND detects neutrons with energies from 100 to 1000 MeV, featuring a high detection efficiency, a high spatial and time resolution, and a large multi-neutron reconstruction efficiency. This is achieved by a highly granular design of organic scintillators: 3000 individual submodules with a size of 5 × 5 × 250 cm3 are arranged in 30 double planes with 100 submodules each, providing an active area of 250 × 250 cm2 and a total depth of 3 m. The spatial resolution due to the granularity together with a time resolution of 150 ps ensures high-resolution capabilities. In conjunction with calorimetric properties, a multi-neutron reconstruction efficiency of 50% to 70% for four-neutron events will be achieved, depending on both the emission scenario and the boundary conditions allowed for the reconstruction method. We present in this paper the final design of the detector as well as results from test measurements and simulations on which this design is based.