PT Journal AU Garcia, AR Martinez, T Cano-Ott, D Castilla, J Guerrero, C Marin, J Martinez, G Mendoza, E Ovejero, MC Reillo, EM Santos, C Tera, FJ Villamarin, D Nolte, R Agramunt, J Algora, A Tain, JL Banerjee, K Bhattacharya, C Pentilla, H Rinta-Antila, S Gorelov, D TI MONSTER: a time of flight spectrometer for beta-delayed neutron emission measurements SO Journal of Instrumentation JI J. Instrum. PY 2012 BP C05012 - 12pp VL 7 DI 10.1088/1748-0221/7/05/C05012 LA English DE Scintillators; scintillation and light emission processes (solid; gas and liquid scintillators); Instrumentation and methods for time-of-flight (TOF) spectroscopy; Neutron detectors (cold; thermal; fast neutrons) AB The knowledge of the beta-decay properties of nuclei contributes decisively to our understanding of nuclear phenomena: the beta-delayed neutron emission of neutron rich nuclei plays an important role in the nucleosynthesis r-process and constitutes a probe for nuclear structure of very neutron rich nuclei providing information about the high energy part of the full beta strength (S-beta) function. In addition, beta-delayed neutrons are essential for the control and safety of nuclear reactors. In order to determine the neutron energy spectra and emission probabilities from neutron precursors a MOdular Neutron time-of-flight SpectromeTER (MONSTER) has been proposed for the DESPEC experiment at the future FAIR facility. The design of MONSTER and status of its construction are reported in this work. ER