The overall detection efficiency to neutrons of a small prototype of the KLOE lead-scintillating fiber calorimeter has been measured at the neutron beam facility of The Svedberg Laboratory, TSL, Uppsala, in the kinetic energy range [5–175] MeV. The measurement of the neutron detection efficiency of a NE110 scintillator provided a reference calibration. At the lowest trigger threshold, the overall calorimeter efficiency ranges from 30% to 50%. This value largely exceeds the estimated 8-15% expected if the response were proportional only to the scintillator equivalent thickness. A detailed simulation of the calorimeter and of the TSL beam line has been performed with the FLUKA Monte Carlo code. First data-MC comparisons are encouraging and allow to disentangle a neutron halo component in the beam.
Measurement and simulation of neutron detection efficiency in lead-scintillating fiber calorimeters / M., A., S., B., Bini, C., P., B., C., C., DE ZORZI, G., DI DOMENICO, A., B., D.M., A., F., Fiore, S., Gauzzi, P., S., G., F., H., M., I., M., M., S., M., F., N., A., P., A., P., B., S., et al.. - In: NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS. - ISSN 0920-5632. - 197:1(2009), pp. 353-357. (11th Topical Seminar on Innovative Particle and Radiation Detectors Siena, ITALY OCT 01, 2008) [10.1016/j.nuclphysbps.2009.10.102].
Measurement and simulation of neutron detection efficiency in lead-scintillating fiber calorimeters
BINI, Cesare;DE ZORZI, Guido;DI DOMENICO, Antonio;FIORE, SALVATORE;GAUZZI, Paolo;
2009
Abstract
The overall detection efficiency to neutrons of a small prototype of the KLOE lead-scintillating fiber calorimeter has been measured at the neutron beam facility of The Svedberg Laboratory, TSL, Uppsala, in the kinetic energy range [5–175] MeV. The measurement of the neutron detection efficiency of a NE110 scintillator provided a reference calibration. At the lowest trigger threshold, the overall calorimeter efficiency ranges from 30% to 50%. This value largely exceeds the estimated 8-15% expected if the response were proportional only to the scintillator equivalent thickness. A detailed simulation of the calorimeter and of the TSL beam line has been performed with the FLUKA Monte Carlo code. First data-MC comparisons are encouraging and allow to disentangle a neutron halo component in the beam.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
