Accès ouvert déclaré
2026
preprint
Production and installation of wavelength-shifting reflective light enhancers for the Short-Baseline Near Detector
R. Acciarri, L. Aliaga-Soplin, R. Alvarez-Garrote, D. Andrade Aldana, C. Andreopoulos, A. Antonakis, S. Balasubramanian, A. Barnard, V. Basque, J. Bateman, M. C. Bazetto, A. Beever, E. Belchior, M. Betancourt, A. Bhat, M. Bishai, A. Blake, B. Bogart, D. Brailsford, A. Brandt, S. Brickner, M. B. Brunetti, L. Camilleri, D. Caratelli, D. Carber, B. Carlson, M. F. Carneiro, W. Castiglioni, R. Castillo Fernandez, F. Cavanna, A. Chappell, H. K. Chen, S. Chung, R. Coackley, S. Cotton J. I. Crespo-Anadón, C. Cuesta, Y. Dabburi, O. Dalager, M. Dallolio, R. Darby, I. de Icaza, M. Del Tutto, Z. Djurcic, S. Dominguez-Vidales, M. Dubnowski, K. Duffy, S. Dytman, A. Ereditato, J Grimley Evans, A. Ezeribe, C. Fan, A. Filkins, B. Fleming, W. Foreman, D. Franco, H. Frandini, G. Fricano, I. Furic, A. Furmanski, S. Gao, D. Garcia-Gamez, S. Gardiner, I. Gil-Botella, S. Gollapinni, O. Goodwin, P. Green, W. C. Griffith, L. Hagaman, P. Hamilton, B. Harris, C. Harrison, A. Hergenhan, M. Hernandez-Morquecho, P. de Holanda, C. James, R Lynne Jones, M. Jung, T. Junk, D. Kalra, G. Karagiorgi, L. Kashur, K. J. Kelly, W. Ketchum, M. King, J. Klein, L. Kotsiopoulou, S. Kr Das, T. Kroupová, V. A. Kudryavtsev, N. Lane, H. Lay, R. LaZur, J. -Y. Li, K. Lin, B. R. Littlejohn, L Y Liu, W. C. Louis, X. Lu, X. Luo, A. Machado Jr., P. Machado, C. Mariani, F. Marinho, J. Marshall, C. Martin-Morales, A. Mastbaum, K. Mavrokoridis, N. McConkey, B. McCusker, J. Lin, K. Mistry, M. Mooney, A. F. Moor, G. Moreno Granados, C. A. Moura, J. Mueller, S. Mulleriababu, A. Navrer-Agasson, M. Nebot-Guinot, V. C.L. Nguyen, F. Nicolas-Arnaldos, J. Nowak, S Peng Oh, N. Oza, O. Palamara, N. Pallat, V. Pandey, A. Papadopoulou, H. B. Parkinson, J. Paton, L. Paulucci, Z. Pavlovic, D. Payne, L. Pelegrina-Gutiérrez, O. L. G. Peres, V. L. Pimentel, J. Plows, G. Putnam, X. Qian, R. Rajagopalan, P. Ratoff, H. Ray, M. Reggiani-Guzzo, M. Roda, J. Romeo-Araujo, M. Ross-Lonergan, N. Rowe, P. Roy, A. Sanchez-Castillo, P. Sanchez-Lucas, D. W. Schmitz, A. Schneider, A. Schukraft, H. Scott, E. Segreto, M. Shaevitz, P. Singh, B. Slater, J. Smith, R. Soares, M. Soares-Nunes, M. Soderberg, S. Söldner-Rembold, F. Spagliardi, J. Spitz, M. Stancari, T. Strauss, A. M. Szelc, C. Thorpe, D. Totani, M. Toups, C. Touramanis, L. Tung, G. A. Valdiviesso, R. G. Van de Water, A. Vázquez-Ramos, L. H. Wan, M. Weber, H. Wei, T. Wester, A. White, A. Wilkinson, P. Wilson, T. Wongjirad, E. Worcester, M. Worcester, S. Yadav, E. Yandel, T. Yang, L. Yates, S. Yebes, B. Yu, H. Yu, J. Yu, B. Zamorano, J. Zennamo, C. Zhang
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Résumé fourni par la source
We report on the design, production, and installation of a wavelength-shifting reflective system on the cathode of the Short-Baseline Near Detector (SBND), a liquid argon time projection chamber located along the Fermilab Booster Neutrino Beam. To increase and homogenize scintillation-light collection, 64 double-sided plates were fabricated from FR4, laminated with specular reflector film and coated with 300 $μ$g/cm$^2$ of tetraphenyl butadiene (TPB) wavelength shifter using controlled physical vapor deposition. The coating uniformity was validated through dedicated measurements of deposited mass and profilometry studies. Because exposure to ambient blue/UV light could degrade the TPB, protective filtering and controlled storage conditions were implemented during handling and installation. The coated plates were assembled between conductive meshes for high-voltage compatibility and installed in situ during detector integration. This system constitutes the largest TPB-coated area deployed in a neutrino detector. It operates in conjunction with SBND's photon detection system, which consists of photomultiplier tubes and X-ARAPUCAs. Early light-collection measurements show high uniformity and light response across the detector, supporting improved triggering, calorimetry, and position reconstruction in SBND.
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Neutrino Physics ResearchRadiation Detection and Scintillator TechnologiesDark Matter and Cosmic Phenomena