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1. Secondary scintillation yield of xenon with sub-percent levels of CO2 additive for rare-event detection

Author

C.A.O. Henriques, E.D.C. Freitas, C.D.R. Azevedo, D. González-Díaz, R.D.P. Mano, M.R. Jorge, L.M.P. Fernandes, C.M.B. Monteiro, J.J. Gómez-Cadenas, V. Álvarez, J.M. Benlloch-Rodríguez, F.I.G.M. Borges, A. Botas, S. Cárcel, J.V. Carríon, S. Cebrían, C.A.N. Conde, J. Díaz, M. Diesburg, R. Esteve, R. Felkai, P. Ferrario, A.L. Ferreira, A. Goldschmidt, R.M. Gutiérrez, J. Hauptman, A.I. Hernandez, J.A. Hernando Morata, V. Herrero, B.J.P. Jones, L. Labarga, A. Laing, P. Lebrun, I. Liubarsky, N. López-March, M. Losada, J. Martín-Albo, G. Martínez-Lema, A. Martínez, A.D. McDonald, F. Monrabal, F.J. Mora, L.M. Moutinho, J. Muñoz Vidal, M. Musti, M. Nebot-Guinot, P. Novella, D.R. Nygren, B. Palmeiro, A. Para, J. Pérez, M. Querol, J. Renner, L. Ripoll, J. Rodríguez, L. Rogers, F.P. Santos, J.M.F. dos Santos, A. Simón, C. Sofka, M. Sorel, T. Stiegler, J.F. Toledo, J. Torrent, Z. Tsamalaidze, J.F.C.A. Veloso, R. Webb, J.T. White, and N. Yahlali

Subjects
Physics, QC1-999
Abstract

Xe–CO2 mixtures are important alternatives to pure xenon in Time Projection Chambers (TPC) based on secondary scintillation (electroluminescence) signal amplification with applications in the important field of rare event detection such as directional dark matter, double electron capture and double beta decay detection. The addition of CO2 to pure xenon at the level of 0.05–0.1% can reduce significantly the scale of electron diffusion from 10 mm/m to 2.5 mm/m, with high impact on the discrimination efficiency of the events through pattern recognition of the topology of primary ionization trails. We have measured the electroluminescence (EL) yield of Xe–CO2 mixtures, with sub-percent CO2 concentrations. We demonstrate that the EL production is still high in these mixtures, 70% and 35% relative to that produced in pure xenon, for CO2 concentrations around 0.05% and 0.1%, respectively. The contribution of the statistical fluctuations in EL production to the energy resolution increases with increasing CO2 concentration, being smaller than the contribution of the Fano factor for concentrations below 0.1% CO2. Keywords: Double beta decay, Neutrino, Rare event detection, Electroluminescence, Secondary scintillation, Xenon

Published
2017
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2. Reflectance and fluorescence characteristics of PTFE coated with TPB at visible, UV, and VUV as a function of thickness

Author

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

Subjects
High Energy Physics - Experiment (hep-ex), Physics - Instrumentation and Detectors, FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), Instrumentation, Mathematical Physics, Optics (physics.optics), High Energy Physics - Experiment, Physics - Optics
Abstract

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.

Published
2023
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3. The dynamics of ions on phased radio-frequency carpets in high pressure gases and application for barium tagging in xenon gas time projection chambers

Author

B.J.P. Jones, A. Raymond, K. Woodruff, N. Byrnes, A.A. Denisenko, F.W. Foss, K. Navarro, D.R. Nygren, T.T. Vuong, C. Adams, H. Almazán, V. Álvarez, B. Aparicio, A.I. Aranburu, L. Arazi, I.J. Arnquist, S. Ayet, C.D.R. Azevedo, K. Bailey, F. Ballester, J.M. Benlloch-Rodríguez, F.I.G.M. Borges, S. Bounasser, S. Cárcel, J.V. Carrión, S. Cebrián, E. Church, C.A.N. Conde, T. Contreras, F.P. Cossío, G. Díaz, J. Díaz, T. Dickel, J. Escada, R. Esteve, A. Fahs, R. Felkai, L.M.P. Fernandes, P. Ferrario, A.L. Ferreira, E.D.C. Freitas, Z. Freixa, J. Generowicz, A. Goldschmidt, J.J. Gómez-Cadenas, R. González, D. González-Díaz, R. Guenette, R.M. Gutiérrez, J. Haefner, K. Hafidi, J. Hauptman, C.A.O. Henriques, J.A. Hernando Morata, P. Herrero-Gómez, V. Herrero, J. Ho, Y. Ifergan, M. Kekic, L. Labarga, A. Laing, P. Lebrun, D. Lopez Gutierrez, N. López-March, M. Losada, R.D.P. Mano, J. Martín-Albo, A. Martínez, G. Martínez-Lema, M. Martínez-Vara, A.D. McDonald, Z.E. Meziani, K. Mistry, F. Monrabal, C.M.B. Monteiro, F.J. Mora, J. Muñoz Vidal, P. Novella, E. Oblak, M. Odriozola-Gimeno, B. Palmeiro, A. Para, J. Pérez, M. Querol, A.B. Redwine, J. Renner, L. Ripoll, I. Rivilla, Y. Rodríguez García, J. Rodríguez, C. Rogero, L. Rogers, B. Romeo, C. Romo-Luque, F.P. Santos, J.M.F. dos Santos, A. Simón, M. Sorel, C. Stanford, J.M.R. Teixeira, P. Thapa, J.F. Toledo, J. Torrent, A. Usón, J.F.C.A. Veloso, R. Webb, R. Weiss-Babai, J.T. White, N. Yahlali, Texas A&M University, Department of Energy (US), National Science Foundation (US), Welch Foundation, Austrian Science Fund, European Commission, European Research Council, Agencia Estatal de Investigación (España), Ministerio de Economía y Competitividad (España), Fundación 'la Caixa', Ministerio de Ciencia, Innovación y Universidades (España), Generalitat Valenciana, Fundação para a Ciência e a Tecnologia (Portugal), Pazy foundation, and Argonne National Laboratory (US)

Subjects
Nuclear and High Energy Physics, Instrumentation
Abstract

NEXT Collaboration: et al., Radio-frequency (RF) carpets with ultra-fine pitches are examined for ion transport in gases at atmospheric pressures and above. We develop new analytic and computational methods for modeling RF ion transport at densities where dynamics are strongly influenced by buffer gas collisions. An analytic description of levitating and sweeping forces from phased arrays is obtained, then thermodynamic and kinetic principles are used to calculate ion loss rates in the presence of collisions. This methodology is validated against detailed microscopic SIMION simulations. We then explore a parameter space of special interest for neutrinoless double beta decay experiments: transport of barium ions in xenon at pressures from 1 to 10 bar. Our computations account for molecular ion formation and pressure dependent mobility as well as finite temperature effects. We discuss the challenges associated with achieving suitable operating conditions, which lie beyond the capabilities of existing devices, using presently available or near-future manufacturing techniques., The University of Texas at Arlington NEXT group is supported by the Department of Energy, USA under Early Career Award number DE-SC0019054 (BJPJ), by Department of Energy, USA Award DE-SC0019223 (DRN), the National Science Foundation, USA under award number NSF CHE 2004111 (FWF), and the Robert A Welch Foundation, Y-2031-20200401 (FWF). The NEXT Collaboration acknowledges support from the following agencies and institutions: the European Research Council (ERC) under the Advanced Grant 339787-NEXT; the European Union’s Framework Programme for Research and Innovation Horizon 2020 (2014–2020) under the Grant Agreements No. 674896, 690575 and 740055; the Ministerio de Economía Competitividad and the Ministerio de Ciencia, Innovación Universidades of Spain under grants FIS2014-53371-C04, RTI2018-095979, the Severo Ochoa Program grants SEV-2014-0398 and CEX2018-000867-S, and the María de Maeztu Program MDM-2016-0692; from Fundacion Bancaria la Caixa (ID 100010434), grant code LCF/BQ/PI19/11690012; the Generalitat Valenciana of Spain under grants PROMETEO/2016/120 and SEJI/2017/011; the Portuguese FCT under project PTDC/FIS-NUC/2525/2014 and under projects 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, USA), DE-AC02-07CH11359 (Fermi National Accelerator Laboratory), DE-FG02-13ER42020 (Texas A&M). DGD acknowledges support from the Ramón y Cajal program (Spain) under contract number RYC-2015-18820. JM-A acknowledges support from Fundación Bancaria la Caixa (ID 100010434), grant code LCF/BQ/PI19/11690012, and from the Plan GenT program of the Generalitat Valenciana , grant code CIDEGENT/2019/049.

Published
2022
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4. In-situ calibration of the single-photoelectron charge response of the IceCube photomultiplier tubes

Author

M.G. Aartsen, M. Ackermann, J. Adams, J.A. Aguilar, M. Ahlers, M. Ahrens, C. Alispach, K. Andeen, T. Anderson, I. Ansseau, G. Anton, C. Argüelles, J. Auffenberg, S. Axani, P. Backes, H. Bagherpour, X. Bai, A. Balagopal V., A. Barbano, S.W. Barwick, B. Bastian, V. Baum, S. Baur, R. Bay, J.J. Beatty, K.-H. Becker, J. Becker Tjus, S. BenZvi, D. Berley, E. Bernardini, D.Z. Besson, G. Binder, D. Bindig, E. Blaufuss, S. Blot, C. Bohm, M. Börner, S. Böser, O. Botner, J. Böttcher, E. Bourbeau, J. Bourbeau, F. Bradascio, J. Braun, S. Bron, J. Brostean-Kaiser, A. Burgman, J. Buscher, R.S. Busse, T. Carver, C. Chen, E. Cheung, D. Chirkin, S. Choi, K. Clark, L. Classen, A. Coleman, G.H. Collin, J.M. Conrad, P. Coppin, P. Correa, D.F. Cowen, R. Cross, P. Dave, C. De Clercq, J.J. DeLaunay, H. Dembinski, K. Deoskar, S. De Ridder, P. Desiati, K.D. de Vries, G. de Wasseige, M. de With, T. DeYoung, A. Diaz, J.C. Díaz-Vélez, H. Dujmovic, M. Dunkman, E. Dvorak, B. Eberhardt, T. Ehrhardt, P. Eller, R. Engel, P.A. Evenson, S. Fahey, A.R. Fazely, J. Felde, K. Filimonov, C. Finley, D. Fox, A. Franckowiak, E. Friedman, A. Fritz, T.K. Gaisser, J. Gallagher, E. Ganster, S. Garrappa, L. Gerhardt, K. Ghorbani, T. Glauch, T. Glüsenkamp, A. Goldschmidt, J.G. Gonzalez, D. Grant, Z. Griffith, S. Griswold, M. Günder, M. Gündüz, C. Haack, A. Hallgren, L. Halve, F. Halzen, K. Hanson, A. Haungs, D. Hebecker, D. Heereman, P. Heix, K. Helbing, R. Hellauer, F. Henningsen, S. Hickford, J. Hignight, G.C. Hill, K.D. Hoffman, R. Hoffmann, T. Hoinka, B. Hokanson-Fasig, K. Hoshina, F. Huang, M. Huber, T. Huber, K. Hultqvist, M. Hünnefeld, R. Hussain, S. In, N. Iovine, A. Ishihara, G.S. Japaridze, M. Jeong, K. Jero, B.J.P. Jones, F. Jonske, R. Joppe, D. Kang, W. Kang, A. Kappes, D. Kappesser, T. Karg, M. Karl, A. Karle, U. Katz, M. Kauer, J.L. Kelley, A. Kheirandish, J. Kim, T. Kintscher, J. Kiryluk, T. Kittler, S.R. Klein, R. Koirala, H. Kolanoski, L. Köpke, C. Kopper, S. Kopper, D.J. Koskinen, M. Kowalski, K. Krings, G. Krückl, N. Kulacz, N. Kurahashi, A. Kyriacou, M. Labare, J.L. Lanfranchi, M.J. Larson, F. Lauber, J.P. Lazar, K. Leonard, A. Leszczyńska, M. Leuermann, Q.R. Liu, E. Lohfink, C.J. Lozano Mariscal, L. Lu, F. Lucarelli, J. Lünemann, W. Luszczak, Y. Lyu, W.Y. Ma, J. Madsen, G. Maggi, K.B.M. Mahn, Y. Makino, P. Mallik, K. Mallot, S. Mancina, I.C. Mariş, R. Maruyama, K. Mase, R. Maunu, F. McNally, K. Meagher, M. Medici, A. Medina, M. Meier, S. Meighen-Berger, T. Menne, G. Merino, T. Meures, J. Micallef, D. Mockler, G. Momenté, T. Montaruli, R.W. Moore, R. Morse, M. Moulai, P. Muth, R. Nagai, U. Naumann, G. Neer, H. Niederhausen, M.U. Nisa, S.C. Nowicki, D.R. Nygren, A. Obertacke Pollmann, M. Oehler, A. Olivas, A. O'Murchadha, E. O'Sullivan, T. Palczewski, H. Pandya, D.V. Pankova, N. Park, P. Peiffer, C. Pérez de los Heros, S. Philippen, D. Pieloth, E. Pinat, A. Pizzuto, M. Plum, A. Porcelli, P.B. Price, G.T. Przybylski, C. Raab, A. Raissi, M. Rameez, L. Rauch, K. Rawlins, I.C. Rea, R. Reimann, B. Relethford, M. Renschler, G. Renzi, E. Resconi, W. Rhode, M. Richman, S. Robertson, M. Rongen, C. Rott, T. Ruhe, D. Ryckbosch, D. Rysewyk, I. Safa, S.E. Sanchez Herrera, A. Sandrock, J. Sandroos, M. Santander, S. Sarkar, K. Satalecka, M. Schaufel, H. Schieler, P. Schlunder, T. Schmidt, A. Schneider, J. Schneider, F.G. Schröder, L. Schumacher, S. Sclafani, D. Seckel, S. Seunarine, S. Shefali, M. Silva, R. Snihur, J. Soedingrekso, D. Soldin, M. Song, G.M. Spiczak, C. Spiering, J. Stachurska, M. Stamatikos, T. Stanev, R. Stein, P. Steinmüller, J. Stettner, A. Steuer, T. Stezelberger, R.G. Stokstad, A. Stößl, N.L. Strotjohann, T. Stürwald, T. Stuttard, G.W. Sullivan, I. Taboada, F. Tenholt, S. Ter-Antonyan, A. Terliuk, S. Tilav, K. Tollefson, L. Tomankova, C. Tönnis, S. Toscano, D. Tosi, A. Trettin, M. Tselengidou, C.F. Tung, A. Turcati, R. Turcotte, C.F. Turley, B. Ty, E. Unger, M.A. Unland Elorrieta, M. Usner, J. Vandenbroucke, W. Van Driessche, D. van Eijk, N. van Eijndhoven, S. Vanheule, J. van Santen, M. Vraeghe, C. Walck, A. Wallace, M. Wallraff, N. Wandkowsky, T.B. Watson, C. Weaver, A. Weindl, M.J. Weiss, J. Weldert, C. Wendt, J. Werthebach, B.J. Whelan, N. Whitehorn, K. Wiebe, C.H. Wiebusch, L. Wille, D.R. Williams, L. Wills, M. Wolf, J. Wood, T.R. Wood, K. Woschnagg, G. Wrede, D.L. Xu, X.W. Xu, Y. Xu, J.P. Yanez, G. Yodh, S. Yoshida, T. Yuan, M. Zöcklein, Physics, Faculty of Sciences and Bioengineering Sciences, Vriendenkring VUB, and Elementary Particle Physics

Subjects
electron, Physics - Instrumentation and Detectors, Detector modelling and simulations II (electric fields, Physics::Instrumentation and Detectors, Monte Carlo method, 01 natural sciences, charge distribution, 030218 nuclear medicine & medical imaging, IceCube, 0302 clinical medicine, DESIGN, charge, emission, (photomultipliers, Instrumentation, Photon detectors for UV, physics.ins-det, Mathematical Physics, Physics, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Charge density, calibration [photomultiplier], Monte Carlo [numerical calculations], Instrumentation and Detectors (physics.ins-det), photomultiplier: calibration, Detector modelling and simulations II (electric fields, charge transport, multiplication and induction, pulse formation, electron emission, etc), Neutrino detector, HPDs, Physique des particules élémentaires, Neutrino, numerical calculations: Monte Carlo, others), photoelectron, Photomultiplier, data analysis method, pulse formation, Visible and IR photons (vacuum) (photomultipliers, HPDs, others), FOS: Physical sciences, Particle detector, IceCube Neutrino Observatory, 03 medical and health sciences, Optics, 0103 physical sciences, Physics::Atomic and Molecular Clusters, Visible and IR photons (vacuum) (photomultipliers, ddc:610, etc), multiplication and induction, 010308 nuclear & particles physics, business.industry, PERFORMANCE, visible and IR photons (vacuum), charge transport, Physics and Astronomy, electron emission, transport, business
Abstract

Journal of Instrumentation 15(06), P06032 (2020). doi:10.1088/1748-0221/15/06/P06032, We describe an improved in-situ calibration of the single-photoelectron charge distributions for each of the in-ice Hamamatsu Photonics R7081-02[MOD] photomultiplier tubes in the IceCube Neutrino Observatory. The characterization of the individual PMT charge distributions is important for PMT calibration, data and Monte Carlo simulation agreement, and understanding the effect of hardware differences within the detector. We discuss the single photoelectron identification procedure and how we extract the single-photoelectron charge distribution using a deconvolution of the multiple-photoelectron charge distribution., Published by Inst. of Physics, London

Published
2020
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5. A Simulation of the Optical Attenuation of TPB Coated Light-guide Detectors

Author

B.J.P. Jones

Subjects
Argon, Time projection chamber, Materials science, Physics - Instrumentation and Detectors, 010308 nuclear & particles physics, business.industry, Attenuation, Detector, chemistry.chemical_element, FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), Scintillator, 01 natural sciences, High Energy Physics - Experiment, Wavelength, High Energy Physics - Experiment (hep-ex), Optics, chemistry, 0103 physical sciences, Surface roughness, 010306 general physics, Absorption (electromagnetic radiation), business, Instrumentation, Mathematical Physics
Abstract

This note describes simple simulations which were performed in order to understand the attenuation behaviors of acrylic light-guides operated in air and argon, which were characterized in \cite{Baptista:2012bf}. Whilst these simulations are only at the level of sophistication of a toy model, they illustrate interesting non-exponential light attenuation effects and the differences between operating light-guide based detectors in argon and air environments. We investigate the effects of surface absorption, surface roughness and wavelength dependence, and use a model tuned on the light-guide attenuation curve measured in air to make a prediction of the light-guide attenuation curve in argon. This curve is compared with data from a liquid argon test stand, and an improvement over a simple exponential model is observed., Comment: This note is a supplement to proceedings submitted for the Light Detection in Noble Elements (LIDINE 2013) conference. v2 updated in accord with referees comments

Published
2013
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