title: Development of single-exposure, multidetector neutron spectrometers: the NESCOFI@BTF project.
abstract: NESCOFI@BTF is a 3-y project (2011-13) supported by the Scientific Commission 5 of INFN (Italy). The target is the development of neutron spectrometers similar to the Bonner spheres, in terms of response energy interval and accuracy, but able to determine the neutron spectrum in only one exposure. These devices embed multiple (10 to 30) thermal neutron detectors (TNDs) within a single moderator. Two prototypes, called SPherical SPectrometer (SP(2)) and cylindrical spectrometer (CYSP), have been set up. Whilst SP(2) has spherical geometry and nearly isotropic response, the CYSP has cylindrical geometry and is intended to be used as a directional spectrometer. Suitable active TNDs will be embedded in the final version of the devices. The resulting instruments could be used as real-time neutron spectrometers in neutron-producing facilities. This communication describes the design criteria, numerical analysis, experimental issues, state-of-the-art and future developments connected with the development of these instruments.
authors.affiliation: IFNF - LNF, via E. Fermi n. 40, Frascati, Roma 00044, Italy roberto.bedogni@lnf.infn.it.
authors.forename: R
authors.initials: R
authors.lastname: Bedogni
authors.affiliation: IFNF - LNF, via E. Fermi n. 40, Frascati, Roma 00044, Italy CIEMAT, Av. Complutense 40, Madrid 28040, Spain.
authors.forename: J M
authors.initials: JM
authors.lastname: Gómez-Ros
authors.affiliation: IFNF - LNF, via E. Fermi n. 40, Frascati, Roma 00044, Italy Politecnico di Milano, Dipartimento di Energia, via Ponzio 34/3, Milano 20133, Italy.
authors.forename: D
authors.initials: D
authors.lastname: Bortot
authors.affiliation: Politecnico di Milano, Dipartimento di Energia, via Ponzio 34/3, Milano 20133, Italy.
authors.forename: A
authors.initials: A
authors.lastname: Pola
authors.affiliation: Politecnico di Milano, Dipartimento di Energia, via Ponzio 34/3, Milano 20133, Italy.
authors.forename: M V
authors.initials: MV
authors.lastname: Introini
authors.affiliation: IFNF - LNF, via E. Fermi n. 40, Frascati, Roma 00044, Italy.
authors.forename: A
authors.initials: A
authors.lastname: Esposito
authors.affiliation: IFNF - LNF, via E. Fermi n. 40, Frascati, Roma 00044, Italy.
authors.forename: A
authors.initials: A
authors.lastname: Gentile
authors.affiliation: IFNF - LNF, via E. Fermi n. 40, Frascati, Roma 00044, Italy.
authors.forename: G
authors.initials: G
authors.lastname: Mazzitelli
authors.affiliation: IFNF - LNF, via E. Fermi n. 40, Frascati, Roma 00044, Italy.
authors.forename: B
authors.initials: B
authors.lastname: Buonomo
mesh_terms: D004867:Equipment Design; D007558:Italy; D009010:Monte Carlo Method; D009502:Neutrons; D020959:Polyethylene / Q000737:chemistry; D016730:Program Development; D011829:Radiation Dosage; D011834:Radiation Monitoring / Q000295:instrumentation; D011835:Radiation Protection / Q000379:methods; D015203:Reproducibility of Results; D013053:Spectrophotometry / Q000295:instrumentation* / Q000379:methods*
chemical_list: D020959:Polyethylene