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Pulse pile-up identification and reconstruction for liquid scintillator based neutron detectors

Luo, X. L.; Modamio, V.; Nyberg, J.; Valiente-Dobon, J. J.; Nishada, Q.; de Angelis, G.; Agramunt, J.; Egea, F. J.; Erduran, M. N.; Erturk, S.; de France, G.; Gadea, A.; Gonzalez, V.; Goasduff, A.; Huyuk, T.; Jaworski, G.; Moszynski, M.; Di Nitto, A.; Palacz, M.; Soederstroem, P. -A.; Soederstroem, P. -A.


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        "name": "Luo, X. L."
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      {
        "affiliation": "Ist Nazl Fis Nucl, Lab Nazl Legnaro, I-35020 Padua, Italy", 
        "name": "Modamio, V."
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      {
        "affiliation": "Uppsala Univ, Dept Phys & Astron, SE-75120 Uppsala, Sweden", 
        "name": "Nyberg, J."
      }, 
      {
        "affiliation": "Ist Nazl Fis Nucl, Lab Nazl Legnaro, I-35020 Padua, Italy", 
        "name": "Valiente-Dobon, J. J."
      }, 
      {
        "affiliation": "Uppsala Univ, Dept Phys & Astron, SE-75120 Uppsala, Sweden", 
        "name": "Nishada, Q."
      }, 
      {
        "affiliation": "Ist Nazl Fis Nucl, Lab Nazl Legnaro, I-35020 Padua, Italy", 
        "name": "de Angelis, G."
      }, 
      {
        "affiliation": "Univ Valencia, CSIC, IFIC, Valencia, Spain", 
        "name": "Agramunt, J."
      }, 
      {
        "name": "Egea, F. J."
      }, 
      {
        "affiliation": "Istanbul Sabahattin Zaim Univ, Fac Engn & Nat Sci, Istanbul, Turkey", 
        "name": "Erduran, M. N."
      }, 
      {
        "affiliation": "Omer Halisdemir Univ, Nigde, Turkey", 
        "name": "Erturk, S."
      }, 
      {
        "name": "de France, G."
      }, 
      {
        "affiliation": "Univ Valencia, CSIC, IFIC, Valencia, Spain", 
        "name": "Gadea, A."
      }, 
      {
        "affiliation": "Univ Valencia, Dept Elect Engn, E-46071 Valencia, Spain", 
        "name": "Gonzalez, V."
      }, 
      {
        "affiliation": "Univ Padua, Dipartimento Fis & Astron, Padua, Italy", 
        "name": "Goasduff, A."
      }, 
      {
        "affiliation": "Univ Valencia, CSIC, IFIC, Valencia, Spain", 
        "name": "Huyuk, T."
      }, 
      {
        "name": "Jaworski, G."
      }, 
      {
        "name": "Moszynski, M."
      }, 
      {
        "affiliation": "Johannes Gutenberg Univ Mainz, D-55099 Mainz, Germany", 
        "name": "Di Nitto, A."
      }, 
      {
        "affiliation": "Univ Warsaw, Heavy Ion Lab, Ul Pasteura 5A, PL-02093 Warsaw, Poland", 
        "name": "Palacz, M."
      }, 
      {
        "name": "Soederstroem, P. -A."
      }, 
      {
        "name": "Soederstroem, P. -A."
      }
    ], 
    "description": "The issue of pulse pile-up is frequently encountered in nuclear experiments involving high counting rates, which will distort the pulse shapes and the energy spectra. A digital method of off-line processing of pile-up pulses is presented. The pile-up pulses were firstly identified by detecting the downward-going zero-crossings in the first-order derivative of the original signal, and then the constituent pulses were reconstructed based on comparing the pile-up pulse with four models that are generated by combining pairs of neutron and.. standard pulses together with a controllable time interval. The accuracy of this method in resolving the pile-up events was investigated as a function of the time interval between two pulses constituting a pile-up event. The obtained results show that the method is capable of disentangling two pulses with a time interval among them down to 20 ns, as well as classifying them as neutrons or gamma rays. Furthermore, the error of reconstructing pile-up pulses could be kept below 6% when successive peaks were separated by more than 50 ns. By applying the method in a high counting rate of pile-up events measurement of the NEutron Detector Array (NEDA), it was empirically found that this method can reconstruct the pile-up pulses and perform neutron-gamma discrimination quite accurately. It can also significantly correct the distorted pulse height spectrum due to pile-up events.", 
    "doi": "10.1016/j.nima.2018.03.078", 
    "has_grant": false, 
    "journal": {
      "pages": "59-65", 
      "title": "NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT", 
      "volume": "897"
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    "publication_date": "2018-01-01", 
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    "title": "Pulse pile-up identification and reconstruction for liquid scintillator based neutron detectors"
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