Abstract
The NeuLAND detector at the (RB)-B-3 experiment at the future FAIR
facility in Darmstadt aims to detect fast neutrons (0.2-1.0 GeV) with
high time and spatial resolutions (at < 100 ps, sigma (x,y,z) < 1 cm).
This task can be performed either with a scintillator or based on the
multigap resistive plate chamber (MRPC) technology. Here, prototyping
and test for an MRPC-based solution are discussed. In order to reach
90\% detection efficiency, the final detector must consist of 50
consecutive MRPC stacks. Each stack contains a 4 mm thick anode made of
iron converter material, with an additional 4 mm of converter material
between two stacks. The secondary charged particles stemming from
hadronic interactions of the high energetic neutrons in the converter
will be detected in the MRPCs. As part of the ongoing development
effort, a number of prototypes for this detector have been developed and
built. They have been tested in experiments with a single-electron beam
with picosecond resolution at the superconducting linac ELBE (Dresden,
Germany). The results of the tests are presented here, and an outlook is
given. (C) 2011 Elsevier B.V. All rights reserved.
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