Measurement of detection efficiency using Pb-scintillating fiber sampling KLOE calorimeter for neutrons between 22 and 174 MeV

Author

Anelli, M. ; Battistoni, G. ; Bertolucci, S. ; Bini, C. ; Branchini, P. ; Curceanu, C. ; De Zorzi, G. ; Domenico, A. Di ; Micco, B. Di ; Ferrari, A. ; Fiore, S. ; Gauzzi, P. ; Giovannella, S. ; Happacher, F. ; Iliescu, M. ; Martini, M. ; Miscetti, S. ; Ng

Author_Institution

Laboratori Nazionali di Frascati, INFN, Italy

fYear

2008

fDate

19-25 Oct. 2008

Firstpage

2368

Lastpage

2372

Abstract

We exposed a prototype of the high-sampling lead-scintillating fiber KLOE calorimeter to neutron beam of 21, 46, and 174 MeV, provided by the The Svedberg Laboratory (TSL), Uppsala, to study its neutron detection efficiency. This has been found larger than what what expected considering the scintillator thickness of the KLOE prototype only.We checked the reliability of our method, measuring also the neutron detection efficiency of a 5 cm thick NE110 scintillator. Our results prove the existence of a contribution from passive material to neutron detection efficiency, in a high-sampling calorimeter configuration. The origin of the efficiency enhancement has been studied using the FLUKA Monte Carlo code. We present the TSL beam test results and the reasons for such enhancement, which allows to develop compact, inexpensive, fast, and highly efficient neutron counters.

Keywords

Laboratories; Lead; Monte Carlo methods; Neutrons; Particle beams; Prototypes; Radiation detectors; Sampling methods; Testing; Thickness measurement; calorimeter; neutron detection efficiency; scintillating fibers;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record, 2008. NSS '08. IEEE

Conference_Location

Dresden, Germany

ISSN

1095-7863

Print_ISBN

978-1-4244-2714-7

Electronic_ISBN

1095-7863

Type

conf

DOI

10.1109/NSSMIC.2008.4774832

Filename

4774832