Calibration of BC501A liquid scintillator cells with monochromatic neutron beams

Dipartimento di Fisica dell’Università dell’Aquila e INFN (LNGS), Via Vetoio, I-67010 L’Aquila, Italy; Dipartimento di Fisica dell’Università di Pavia e INFN (PV), Via Bassi 6, I-27100 Pavia, Italy; Dipartimento di Fisica dell’Università di Padova e INFN (PD), Via Marzolo 8, I-35131 Padova, Italy; CESNEF Politecnico di Milano e INFN (MI), Via Ponzio 34/3, I-20123 Milano, Italy; INFN Laboratori Nazionali di Frascati, Via E. Fermi 40, I-00044 Frascati (Roma), Italy; Dipartimento di Fisica dell’Università di Milano e INFN (MI), Via Celoria 16, I-20133 Milano, Italy; CERN, CH-1211 Geneva 23, Switzerland; Department of Physics UCLA, Los Angeles, CA 90024, USA; ICGF del CNR, Fiume 4, I-10133 Torino, Italy; IHEP, 19 Yuquan Road, Shijingshan District, 100 039 Beijing, China
Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment (Impact Factor: 1.14). 01/1998; DOI: 10.1016/S0168-9002(98)00679-2

ABSTRACT The recoil proton energy response has been measured by exposing cylindrical cells, filled with BC501A BICRON liquid scintillator, to mono-energetic neutron reference fields. We determine the required calibration parameters and report the detailed procedures for the experimental data handling. A dedicated Monte Carlo simulation of the detector response and efficiency has been performed. It showed good agreement with the measured quantities. The results from this calibration are necessary for a detailed study of the neutron spectrum at the underground Gran Sasso Laboratory, with a neutron detector made of 32 liquid scintillator cells, like those used during the calibration.

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    ABSTRACT: A low-cost high-performance pulse-shape discriminator for neutron–gamma discrimination using liquid scintillation counters equipped with two photomultipliers is developed. Two independent methods of pulse-shape discrimination are exploited to achieve an optimum neutron–gamma identification. The circuit is especially designed to study the low-intensity neutron background field in the Gran Sasso underground laboratory. A detailed layout and the main performances of the electronic circuit are described.
    Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment - NUCL INSTRUM METH PHYS RES A. 01/1998; 410(2):220-228.
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    ABSTRACT: The properties and various applications of scintillation detectors for neutrons of energy > 1 keV are reviewed. Characteristics of the organic scintillator neutron detectors are discussed in some detail and the energy resolution achieved in neutron spectrometric applications is reviewed. Present trends and future needs in neutron detection are summarised and discussed.
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    ABSTRACT: We developed a neutron tagger module using digital pulse shape discrimination method. The tail to total charge logic is implemented in the field programmable gate array (FPGA) that we can tag the neutron in real time and neutron recoil energy can be measured simultaneously. The internal trigger functions are implemented and tagged neutron signals by software setting, which can be sent out by the trigger output connector. All of these functions are implemented in the FPGA. Output data of tail and total integrated charge, and neutron flag can be directly transferred to the host computer by a 100 Mbps Ethernet port. We studied the performance of the neutron tagger module using BC523A liquid scintillator and 232Cf neutron source. The test results show good performance of the developed module.
    IEEE Nuclear Science Symposium conference record. Nuclear Science Symposium 01/2008;


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May 29, 2014

Francesco Arneodo