The ENUBET positron tagger prototype: construction and testbeam performance

A prototype for the instrumented decay tunnel of ENUBET was tested in 2018 at the CERN East Area facility with charged particles up to 5 GeV . This detector is a longitudinal sampling calorimeter with lateral scintillation light readout. The calorimeter was equipped by an additional “t0-layer” for timing and photon discrimination. The performance of this detector in terms of electron energy resolution, linearity, response to muons and hadron showers are presented in this paper and compared with simulation. The t0-layer was studied both in standalone mode using pion charge exchange and in combined mode with the calorimeter to assess the light yield and the 1 mip/2 mip separation capability. We demonstrate that this system fulfills the requirements for neutrino physics applications and discuss performance and additional improvements.

[1]  A. Falcone,et al.  Polysiloxane-based scintillators for shashlik calorimeters , 2020, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment.

[2]  Fabio Acerbi,et al.  Understanding and simulating SiPMs , 2019, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment.

[3]  M. Catanesi,et al.  Irradiation and performance of RGB-HD Silicon Photomultipliers for calorimetric applications , 2019, Journal of Instrumentation.

[4]  M. Catanesi,et al.  Positron identification in the ENUBET instrumented decay tunnel , 2018 .

[5]  M. Catanesi,et al.  Testbeam performance of a shashlik calorimeter with fine-grained longitudinal segmentation , 2018, 1801.06167.

[6]  C. Piemonte,et al.  Shashlik Calorimeters With Embedded SiPMs for Longitudinal Segmentation , 2017, IEEE Transactions on Nuclear Science.

[7]  C. Piemonte,et al.  Characterization of high density SiPM non-linearity and energy resolution for prompt gamma imaging applications , 2017 .

[8]  T. V. Vieira,et al.  The Single-Phase ProtoDUNE Technical Design Report , 2017, 1706.07081.

[9]  A. Meregaglia.  ENUBET: Enhanced NeUtrino BEams from kaon Tagging , 2016 .

[10]  M. Catanesi,et al.  Enabling precise measurements of flux in accelerator neutrino beams: the ENUBET project , 2016 .

[11]  E. Vallazza,et al.  A compact light readout system for longitudinally segmented shashlik calorimeters , 2016, 1605.09630.

[12]  T. Takeshita,et al.  Describing the response of saturated SiPMs , 2015, 1510.01102.

[13]  M. A. Cortés-Giraldo,et al.  Recent developments in GEANT4 , 2015 .

[14]  A. Rappoldi,et al.  A Proposal for a Three Detector Short-Baseline Neutrino Oscillation Program in the Fermilab Booster Neutrino Beam , 2015, 1503.01520.

[15]  L. Ludovici,et al.  A novel technique for the measurement of the electron neutrino cross section , 2014, 1412.5987.

[16]  Glasgow,et al.  LBNO-DEMO: Large-scale neutrino detector demonstrators for phased performance assessment in view of a long-baseline oscillation experiment , 2014, 1409.4405.

[17]  L. Gruber,et al.  Over saturation behavior of SiPMs at high photon exposure , 2013, 1304.2493.

[18]  H. Schultz-Coulon,et al.  Study of the response and photon-counting resolution of silicon photomultipliers using a generic simulation framework , 2012, 1206.4154.

[19]  A. Dotti,et al.  Description of hadron-induced showers in calorimeters using the GEANT4 simulation toolkit , 2011, 2011 IEEE Nuclear Science Symposium Conference Record.

[20]  D. Kaplan,et al.  G4beamline Particle Tracking in Matter Dominated Beam Lines , 2011 .

[21]  F. Cerutti,et al.  The FLUKA code: Description and benchmarking , 2007 .

[22]  M. Wolter,et al.  TMVA - Toolkit for Multivariate Data Analysis , 2007, physics/0703039.

[23]  S. Incerti,et al.  Geant4 developments and applications , 2006, IEEE Transactions on Nuclear Science.

[24]  A. Ferrari,et al.  FLUKA: A Multi-Particle Transport Code , 2005 .

[25]  Giulio Fedel,et al.  The AGILE silicon tracker: an innovative γ-ray instrument for space , 2003 .

[26]  Karl L. Brown,et al.  Third-order TRANSPORT: A computer program for designing charged particle beam transport systems , 1995 .

[27]  A. Dell'Acqua,et al.  Geant4—a simulation toolkit , 2003 .