Author(s):
Haefner, J. ; 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. ; Gomez-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. ; Santos, J. M. F. dos ; 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.
Date: 2023
Persistent ID: https://hdl.handle.net/10316/113936
Origin: Estudo Geral - Universidade de Coimbra
Subject(s): Time; projection; chambers
Description
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. 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.
The NEXT Collaboration acknowledges support from the following agencies and institutions: the European Research Council (ERC) under Grant Agreement No. 951281-BOLD; the European Union’s Framework Programme for Research and Innovation Horizon 2020 (2014–2020) under Grant Agreement No. 957202-HIDDEN; the MCIN/AEI of Spain and ERDF A way of making Europe under grants RTI2018-095979 and PID2021-125475NB , the Severo Ochoa Program grant CEX2018- 000867-S and the Ram’on y Cajal program grant RYC-2015-18820; the Generalitat Valenciana of Spain under grants PROMETEO/2021/087 and CIDEGENT/2019/049; the Department of Education of the Basque Government of Spain under the predoctoral training program of non-doctoral research personnel; the Portuguese FCT under project UID/FIS/04559/2020 to fund the activities of LIBPhys-UC; the Pazy Foundation (Israel) under grants 877040 and 877041; the US Department of Energy under contracts number DE-AC02-06CH11357 (Argonne National Laboratory), DEAC02- 07CH11359 (Fermi National Accelerator Laboratory), DE-FG02-13ER42020 (Texas A&M), DE-SC0019054 (Texas Arlington) and DE-SC0019223 (Texas Arlington); the US National Science Foundation under award number NSF CHE 2004111; the Robert A Welch Foundation under award number Y-2031-20200401. Finally, we are grateful to the Laboratorio Subterr’aneo de Canfranc for hosting and supporting the NEXT experiment.
