LArTPC Document 2885-v1

The LArIAT light detection system

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Ernesto Kemp
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Ernesto Kemp
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23 Sep 2017, 13:10
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23 Sep 2017, 13:10
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23 Sep 2017, 13:10
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The LArIAT experiment utilizes a Liquid Argon Time Projection Chamber (LArTPC) at the Fermilab Test Beam Facility to study the response of LArTPCs to charged particles of energies relevant for planned neutrino experiments. In addition, it will help to develop and evaluate the performance of the simulation, analysis, and reconstruction software used in other LAr neutrino experiments. Particles from a tertiary beam detected by LArIAT (mainly pions, electron, protons, kaons and muons) are identified using a set of beam-line detectors. In its effort towards augmenting LArTPC technology for other neutrino experiments, LArIAT also takes advantage of the scintillating capabilities of LAr and is testing the use of light signal to help reconstruct calorimetric particle identification information. Two cryogenic photomultiplier tubes (PMTs) and several varieties of silicon photomultipliers (SiPMs) mounted to custom preamplifier boards are suspended behind the LArIAT TPC's wire planes. Reflective foils coated in tetraphenyl butadiene (TPB) line the field cage walls to down-shift scintillation vacuum-ultraviolet (VUV) photons into detectable visible light. Additionally, in the most recent data taking period, a new light detection device (the ARAPUCA) was deployed for R&D studies. In this presentation we will highlight analyses underway which use the visible light to identify and reconstruct Michel electrons, improve particle identification, and present results from the ARAPUCA light device.
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Talk at LIDINE 2017
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