1. The LaBr3(Ce) based detection system for the FAMU experiment
- Author
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M. Furini, M. Zuffa, Pier Luca Rossi, I. D'Antone, A. Rachevski, L. P. Rignanese, E. Mocchiutti, A. Vacchi, A. Margotti, G. Zampa, Claudio Labanti, E. Vallazza, Giuseppe Baldazzi, S. Meneghini, Gianluca Morgante, F. Fuschino, N. Zampa, Baldazzi, G., Vacchi, A., Labanti, C., Morgante, G., Fuschino, F., Rignanese, L.P., Rossi, P.L., Mocchiutti, E., Zampa, N., Zampa, G., Rachevski, A., Vallazza, E., D'Antone, I., Zuffa, M., Meneghini, S., Margotti, A., and Furini, M.
- Subjects
Signal processing ,Detector readout ,Photomultiplier ,Physics::Instrumentation and Detectors ,Ground state ,Charged particle ,Atom ,Scintillator ,01 natural sciences ,Timing detectors ,Spectrometer ,Hyperfine splitting ,Optics ,Photomultiplier tube ,Front-end electronics for detector readout ,0103 physical sciences ,Digital signal processing (DSP) ,Pulsed muon beam ,010306 general physics ,Spectrometers ,Instrumentation ,Mathematical Physics ,Voltage dividers ,Physics ,Muon ,010308 nuclear & particles physics ,business.industry ,Voltage divider ,Detector ,High voltage ,Digital signal processing ,Spectrometers Circular support ,High-precision measurement ,Timing detector ,business ,Beam (structure) - Abstract
The FAMU experiment is devoted to the high precision measurement of the hyperfine splitting of the muonic-hydrogen atom ground state using a pulsed and intense muon beam; it requires careful technological choices both in the construction of the gas target and of the detectors. In the last three years, the cryogenic gas target was developed and used for experimental measurement sessions, with the low energy pulsed muon beam (55-65 MeV), at the RIKEN-RAL (U.K.) muon facility. At the same time, eight LaBr3(Ce) based detectors have been developed to be accommodated in a circular support surrounding the target. The readout for each detector consists of a photomultiplier tube (PMT) equipped with an improved fully active high voltage divider and a Digital Pulse Processor (DPP) performing noise reduction with an optimal (triangular) filter. The active voltage divider, together with the DPP, allow to operate at high speed while retaining all the spectrometric properties of the LaBr3(Ce) scintillator. In this paper, the development of this innovative high-performance detection system is presented. © 2017 IOP Publishing Ltd and Sissa Medialab srl.
- Published
- 2017