Publikationsrepositorium - Helmholtz-Zentrum Dresden-Rossendorf

The NeuLAND detector is part of the R3B experiment at FAIR and will detect neutrons between 0.2 and 1 GeV. The high energy neutrons are converted to charged particles, mainly protons, which are detected by Multigap Resistive Plate Chambers (MRPC). For the detector, a time resolution of σt < 100 ps and a position resolution of σx,y,z ≈ 1 cm is required for given flight paths in the range from 10 to 35 m. An active area of 2 × 2 m2 of the neutron detector at a distance of 12.5 m to the target will match the angular acceptance of ±80 mrad for the neutrons defined by the gap of the superconducting dipole magnet. The salient features of the prototypes will be described, as well as electrical measurements and studies with cosmic rays.