Demonstration of a lightguide detector for liquid argon TPCs
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Author(s)
Bugel, Leonard G.
Conrad, Janet Marie
Ignarra, Christina
Jones, Benjamin James Poyner
Katori, Teppei
Smidt, Tess E.
Tanaka, Hidekazu
Date Issued
March 2011
Journal
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Publisher
Elsevier
Citation
Bugel, L., J.M. Conrad, C. Ignarra, B.J.P. Jones, T. Katori, T. Smidt, and H.-K. Tanaka. “Demonstration of a Lightguide Detector for Liquid Argon TPCs.” Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 640, no. 1 (June 2011): 69–75.
Version
Original manuscript
Abstract
We report demonstration of light detection in liquid argon using an acrylic lightguide detector system. This opens the opportunity for development of an inexpensive, large-area light collection system for large liquid argon time projection chambers. The guides are constructed of acrylic with TPB embedded in a surface coating with a matching index of refraction. We study the response to early scintillation light produced by a 5.3 MeV αα. We measure coating responses from 7 to 8 PE on average, compared to an ideal expectation of 10 PE on average. We estimate the attenuation length of light along the lightguide bar to be greater than 0.5 m. The coating response and the attenuation length can be improved. As a benchmark of the present capability, we show a 30 paddle design meets the requirement of the MicroBooNE Experiment, which is efficient triggering on 40 MeV protons produced by neutrino neutral current elastic scatters.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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Creative Commons Attribution-NonCommercial-NoDerivs License
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DOI of Published Version
https://doi.org/10.1016/j.nima.2011.03.003
