Reflectance and fluorescence characteristics of PTFE coated with TPB at visible, UV, and VUV as a function of thickness

Journal Article · Fri Mar 10 00:00:00 EST 2023 · Journal of Instrumentation

DOI:https://doi.org/10.1088/1748-0221/18/03/p03016· OSTI ID:2216900

Haefner, J. ^[1]; Fahs, A.; Ho, J.; Stanford, C.; Guenette, R.; Adams, C.; Almazán, H.; Álvarez, V.; Aparicio, B.; Aranburu, A. I.; Arazi, L.; Arnquist, I. J.; Auria-Luna, F.; Ayet, S.; Azevedo, C. D.R.; Bailey, K.; Ballester, F.; Benlloch-Rodríguez, J. M.; Borges, F. I.G.M.; Bounasser, S. ; Byrnes, N.; Cárcel, S.; Carrión, J. V.; Cebrián, S.; Church, E.; Conde, C. A.N.; Contreras, T.; Cossío, F. P.; Denisenko, A. A.; Dey, E.; Díaz, G.; Dickel, T.; Escada, J.; Esteve, R.; Felkai, R.; Fernandes, L. M.P.; Ferrario, P.; Ferreira, A. L.; Foss, F. W.; Freitas, E. D.C.; Freixa, Z.; Generowicz, J.; Goldschmidt, A.; Gómez-Cadenas, J. J.; González, R.; Grocott, J.; Hafidi, K.; Hauptman, J.; Henriques, C. A.O.; Hernando Morata, J. A.; Herrero-Gómez, P.; Herrero, V.; Ho, P.; Ifergan, Y.; Jones, B. J.P.; Kekic, M.; Labarga, L.; Larizgoitia, L.; Lebrun, P.; Lopez Gutierrez, D.; López-March, N.; Madigan, R.; Mano, R. D.P.; Martín-Albo, J.; Martínez-Lema, G.; Martínez-Vara, M.; Marques, A. P.; Meziani, Z. E.; Miller, R.; Mistry, K.; Molina-Canteras, J.; Monrabal, F.; Monteiro, C. M.B.; Mora, F. J.; Muñoz Vidal, J.; Navarro, K.; Novella, P.; Nuñez, A.; Nygren, D. R.; Oblak, E.; Odriozola-Gimeno, M.; Palmeiro, B.; Para, A.; Querol, M.; Redwine, A. B.; Renner, J.; Rivilla, I.; Rodríguez, J.; Rogero, C.; Rogers, L.; Romeo, B.; Romo-Luque, C.; Santos, F. P.; dos Santos, J. M.F.; Simón, A.; Sorel, M.; Teixeira, J. M.R.; Toledo, J. F.; Torrent, J.; Usón, A.; Veloso, J. F.C.A.; Vuong, T. T.; Waiton, J.; White, J. T.

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1. Harvard Univ., Cambridge, MA (United States); NEXT Collaboration. et al.

Polytetrafluoroethylene (PTFE) is an excellent diffuse reflector widely used in light collection systems for particle physics experiments. In noble element systems, it is often coated with tetraphenyl butadiene (TPB) to allow detection of vacuum ultraviolet scintillation light. Here, in this work this dependence is investigated for PTFE coated with TPB in air for light of wavelengths of 200 nm, 260 nm, and 450 nm. The results show that TPB-coated PTFE has a reflectance of approximately 92% for thicknesses ranging from 5 mm to 10 mm at 450 nm, with negligible variation as a function of thickness within this range. A cross-check of these results using an argon chamber supports the conclusion that the change in thickness from 5 mm to 10 mm does not affect significantly the light response at 128 nm. Our results indicate that pieces of TPB-coated PTFE thinner than the typical 10 mm can be used in particle physics detectors without compromising the light signal.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL (United States); Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Pacific Northwest National Laboratory (PNNL), Richland, WA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP); USDOE Office of Science (SC), Nuclear Physics (NP); Welch Foundation; National Science Foundation (NSF)
• Contributing Organization: NEXT Collaboration; NEXT
• Grant/Contract Number: AC02-06CH11357; AC02-07CH11359; FG02-13ER42020; SC0019054; SC0019223; AC02-05CH11231; CHE-2004111
• OSTI ID: 2216900
• Alternate ID(s): OSTI ID: 1898853; OSTI ID: 2229669
• Report Number(s): FERMILAB-PUB-22-845-ND-SCD; arXiv:2211.05024; 182272
• Journal Information: Journal of Instrumentation, Vol. 18, Issue 03; ISSN 1748-0221
• Publisher: Institute of Physics (IOP)
• Country of Publication: United States
• Language: English

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