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Author (up) Lerendegui-Marco, J.; Babiano-Suarez, V.; Domingo-Pardo, C.; Ladarescu, I.; Tarifeno-Saldivia, A.; de la Fuente-Rosales, G. url  doi
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  Title Pushing the high count rate limits of scintillation detectors for challenging neutron-capture experiments Type Journal Article
  Year 2024 Publication Nuclear Instruments & Methods in Physics Research A Abbreviated Journal Nucl. Instrum. Methods Phys. Res. A  
  Volume 1064 Issue Pages 169385 - 13pp  
  Keywords Dead-time; Pile-up; Time-of-flight; Radiative capture; Total energy detector; Pulse-height weighting technique  
  Abstract One of the critical aspects for the accurate determination of neutron capture cross sections when combining time-of-flight and total energy detector techniques is the characterization and control of systematic uncertainties associated to the measuring devices. In this work we explore the most conspicuous effects associated to harsh count rate conditions: dead-time and pile-up effects. Both effects, when not properly treated, can lead to large systematic uncertainties and bias in the determination of neutron cross sections. In the majority of neutron capture measurements carried out at the CERN nTOF facility, the detectors of choice are the C6D6 liquid-based either in form of large-volume cells or recently commissioned sTED detector array, consisting of much smaller-volume modules. To account for the aforementioned effects, we introduce a Monte Carlo model for these detectors mimicking harsh count rate conditions similar to those happening at the CERN nTOF 20 m flight path vertical measuring station. The model parameters are extracted by comparison with the experimental data taken at the same facility during 2022 experimental campaign. We propose a novel methodology to consider both, dead-time and pile-up effects simultaneously for these fast detectors and check the applicability to experimental data from Au-197(n, gamma), including the saturated 4.9 eV resonance which is an important component of normalization for neutron cross section measurements.  
  Address [Balibrea-Correa, J.; Lerendegui-Marco, J.; Babiano-Suarez, V.; Domingo-Pardo, C.; Ladarescu, I.; Tarifeno-Saldivia, A.; de la Fuente-Rosales, G.] Univ Valencia, Inst Fis Corpuscular, CSIC, Valencia, Spain, Email: javier.balibrea@ific.uv.es  
  Corporate Author Thesis  
  Publisher Elsevier Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0168-9002 ISBN Medium  
  Area Expedition Conference  
  Notes WOS:001270371600001 Approved no  
  Is ISI yes International Collaboration yes  
  Call Number IFIC @ pastor @ Serial 6270  
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