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Title: Increasing the efficiency of photon collection in LArTPCs: the ARAPUCA light trap

The Liquid Argon Time Projection Chambers (LArTPCs) are a choice for the next generation of large neutrino detectors due to their optimal performance in particle tracking and calorimetry. The detection of Argon scintillation light plays a crucial role in the event reconstruction as well as the time reference for non-beam physics such as supernovae neutrino detection and baryon number violation studies. Here in this contribution, we present the current R&D work on the ARAPUCA (Argon R&D Advanced Program at UNICAMP), a light trap device to enhance Ar scintillation light collection and thus the overall performance of LArTPCs. The ARAPUCA working principle is based on a suitable combination of dichroic filters and wavelength shifters to achieve a high efficiency in light collection. We discuss the operational principles, the last results of laboratory tests and the application of the ARAPUCA as the alternative photon detection system in the protoDUNE detector.
 [1] ;  [1] ;  [1] ;  [2] ;  [3] ;  [1] ;  [4] ;  [5] ;  [6]
  1. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  2. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Univ. of Campinas (UNICAMP), Sao Paulo (Brazil)
  3. Univ. Federal do ABC, Santo Andre, Sao Paulo (Brazil)
  4. Univ. of Campinas (UNICAMP), Sao Paulo (Brazil)
  5. Univ. degli Studi dell'Aquila, L'Aquila (Italy)
  6. Colorado State Univ., Fort Collins, CO (United States)
Publication Date:
Report Number(s):
FERMILAB-CONF-18-065-ND; arXiv:1802.09726
Journal ID: ISSN 1748-0221; 1657759
Grant/Contract Number:
Accepted Manuscript
Journal Name:
Journal of Instrumentation
Additional Journal Information:
Journal Volume: 13; Journal Issue: 03; Journal ID: ISSN 1748-0221
Institute of Physics (IOP)
Research Org:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25); National Council for Scientific and Technological Development (CNPq); Sao Paulo Research Foundation (FAPESP)
Country of Publication:
United States
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Noble liquid detectors (scintillation, ionization, double-phase); Neutrino detectors; Scintillators; scintillation and light emission processes (solid, gas and liquid scintillators)
OSTI Identifier: