Andrew Renshaw
The proposed introduction of a soluble gadolinium (Gd) compound into water Cherenkov detectors can result in a high efficiency for the detection of free neutrons capturing on the Gd. The delayed 8 MeV gamma cascades produced by these captures, in coincidence with a prompt positron signal, serve to uniquely identify electron antineutrinos interacting via inverse beta decay. Such coincidence detection can reduce backgrounds, allowing a large Gd-enhanced water Cherenkov detector to make the first observation of supernova relic neutrinos and high precision measurements of Japan's reactor antineutrino flux, while still allowing for all current physics studies to be continued. Now, a dedicated Gd test facility is operating in the Kamioka Mine. This new facility houses everything needed to successfully operate a Gd doped water Cherenkov detector. Successful running of this facility will demonstrate that adding Gd salt to SK is both safe for the detector and is capable of delivering the expected physics benefits.
Andrew Renshaw
Super-Kamiokande-IV (SK-IV) data taking began in September of 2008, after upgrading the electronics and data acquisition system. Due to these upgrades and improvements to water system dynamics, calibration and analysis techniques, a solar neutrino signal could be extracted at recoil electron kinetic energies as low as 3.5 MeV. When the SK-IV data is combined with the previous three SK phases, the SK extracted solar neutrino flux is found to be $[2.37\pm0.015\mbox{(stat.)}\pm0.04\mbox{(syst.)}]\times10^6$/(cm$^{2}$sec). The combination of the SK recoil electron energy spectra slightly favors distortions due to a changing electron flavor content. Such distortions are predicted when assuming standard solar neutrino oscillation solutions. An extended maximum likelihood fit to the amplitude of the expected solar zenith angle variation of the neutrino-electron elastic scattering rate results in a day-night asymmetry of $[-3.2\pm1.1$(stat.)$\pm0.5$(syst.)]$\%$. A solar neutrino global oscillation analysis including all current solar neutrino data, as well as KamLAND reactor antineutrino data, measures the solar mixing angle as $\sin^2θ_{12}=0.305\pm0.013$, the solar neutrino mass squared splitting as $Δm^2_{21}=7.49^{+0.19}_{-0.17}\times10^{-5}$eV$^2$ and $\sin^2θ_{13}=0.026^{+0.017}_{-0.012}$.
Amanda L. Baxter, Segev BenZvi, Joahan Castaneda Jaimes, Alexis Coleiro, Marta Colomer Molla, Damien Dornic, Tomer Goldhagen, Anne M. Graf, Spencer Griswold, Alec Habig, Remington Hill, Shunsaku Horiuchi James P. Kneller Rafael F. Lang, Massimiliano Lincetto, Jost Migenda, Ko Nakamura, Evan O'Connor, Andrew Renshaw, Kate Scholberg, Navya Uberoi, Arkin Worlikar
Sep 16, 2021·astro-ph.IM·PDF Current neutrino detectors will observe hundreds to thousands of neutrinos from a Galactic supernovae, and future detectors will increase this yield by an order of magnitude or more. With such a data set comes the potential for a huge increase in our understanding of the explosions of massive stars, nuclear physics under extreme conditions, and the properties of the neutrino. However, there is currently a large gap between supernova simulations and the corresponding signals in neutrino detectors, which will make any comparison between theory and observation very difficult. SNEWPY is an open-source software package which bridges this gap. The SNEWPY code can interface with supernova simulation data to generate from the model either a time series of neutrino spectral fluences at Earth, or the total time-integrated spectral fluence. Data from several hundred simulations of core-collapse, thermonuclear, and pair-instability supernovae is included in the package. This output may then be used by an event generator such as sntools or an event rate calculator such as SNOwGLoBES. Additional routines in the SNEWPY package automate the processing of the generated data through the SNOwGLoBES software and collate its output into the observable channels of each detector. In this paper we describe the contents of the package, the physics behind SNEWPY, the organization of the code, and provide examples of how to make use of its capabilities.
The DarkSide Collaboration, P. Agnes, I. F. M. Albuquerque, T. Alexander, A. K. Alton, G. R. Araujo, D. M. Asner, M. Ave, H. O. Back, B. Baldin, G. Batignani, K. Biery, V. Bocci, G. Bonfini, W. Bonivento, B. Bottino, F. Budano, S. Bussino, M. Cadeddu, M. Cadoni, F. Calaprice, A. Caminata, N. Canci, A. Candela, M. Caravati, M. Cariello, M. Carlini, M. Carpinelli, S. Catalanotti, V. Cataudella, P. Cavalcante, S. Cavuoti, R. Cereseto, A. Chepurnov, C. Cicalò, L. Cifarelli, A. G. Cocco, G. Covone, D. D'Angelo, M. D'Incecco, D. D'Urso, S. Davini, A. De Candia, S. De Cecco, M. De Deo, G. De Filippis, G. De Rosa, M. De Vincenzi, P. Demontis, A. V. Derbin, A. Devoto, F. Di Eusanio, G. Di Pietro, C. Dionisi, M. Downing, E. Edkins, A. Empl, A. Fan, G. Fiorillo, K. Fomenko, D. Franco, F. Gabriele, A. Gabrieli, C. Galbiati, P. Garcia Abia, C. Ghiano, S. Giagu, C. Giganti, G. K. Giovanetti, O. Gorchakov, A. M. Goretti, F. Granato, M. Gromov, M. Guan, Y. Guardincerri, M. Gulino, B. R. Hackett, M. H. Hassanshahi, K. Herner, B. Hosseini, D. Hughes, P. Humble, E. V. Hungerford, Al. Ianni, An. Ianni, V. Ippolito, I. James, T. N. Johnson, Y. Kahn, K. Keeter, C. L. Kendziora, I. Kochanek, G. Koh, D. Korablev, G. Korga, A. Kubankin, M. Kuss, M. La Commara, M. Lai, X. Li, M. Lisanti, M. Lissia, B. Loer, G. Longo, Y. Ma, A. A. Machado, I. N. Machulin, A. Mandarano, L. Mapelli, S. M. Mari, J. Maricic, C. J. Martoff, A. Messina, P. D. Meyers, R. Milincic, S. Mishra-Sharma, A. Monte, M. Morrocchi, B. J. Mount, V. N. Muratova, P. Musico, R. Nania, A. Navrer Agasson, A. O. Nozdrina, A. Oleinik, M. Orsini, F. Ortica, L. Pagani, M. Pallavicini, L. Pandola, E. Pantic, E. Paoloni, F. Pazzona, K. Pelczar, N. Pelliccia, V. Pesudo, A. Pocar, S. Pordes, S. S. Poudel, D. A. Pugachev, H. Qian, F. Ragusa, M. Razeti, A. Razeto, B. Reinhold, A. L. Renshaw, M. Rescigno, Q. Riffard, A. Romani, B. Rossi, N. Rossi, D. Sablone, O. Samoylov, W. Sands, S. Sanfilippo, M. Sant, R. Santorelli, C. Savarese, E. Scapparone, B. Schlitzer, E. Segreto, D. A. Semenov, A. Shchagin, A. Sheshukov, P. N. Singh, M. D. Skorokhvatov, O. Smirnov, A. Sotnikov, C. Stanford, S. Stracka, G. B. Suffritti, Y. Suvorov, R. Tartaglia, G. Testera, A. Tonazzo, P. Trinchese, E. V. Unzhakov, M. Verducci, A. Vishneva, B. Vogelaar, M. Wada, T. J. Waldrop, H. Wang, Y. Wang, A. W. Watson, S. Westerdale, M. M. Wojcik, M. Wojcik, X. Xiang, X. Xiao, C. Yang, Z. Ye, C. Zhu, A. Zichichi, G. Zuzel
P. Agnes, S. Albergo, I. F. M. Albuquerque, T. Alexander, A. Alici, A. K. Alton, P. Amaudruz, S. Arcelli, M. Ave, I. Ch. Avetissov, R. I. Avetisov, O. Azzolini, H. O. Back, Z. Balmforth, V. Barbarian, A. Barrado Olmedo, P. Barrillon, A. Basco, G. Batignani, A. Bondar, W. M. Bonivento, E. Borisova, B. Bottino, M. G. Boulay, G. Buccino, S. Bussino, J. Busto, A. Buzulutskov, M. Cadeddu, M. Cadoni, A. Caminata, N. Canci, G. Cappello, M. Caravati, M. Cárdenas-Montes, M. Carlini, F. Carnesecchi, P. Castello, S. Catalanotti, V. Cataudella, P. Cavalcante, S. Cavuoti, S. Cebrian, J. M. Cela Ruiz, B. Celano, S. Chashin, A. Chepurnov, E Chyhyrynets, C. Cicalò, L. Cifarelli, D. Cintas, F. Coccetti, V. Cocco, M. Colocci, E. Conde Vilda, L. Consiglio, S. Copello, J. Corning, G. Covone, P. Czudak, S. D'Auria, M. D. Da Rocha Rolo, O. Dadoun, M. Daniel, S. Davini, A. De Candia, S. De Cecco, A. De Falco, G. De Filippis, D. De Gruttola, G. De Guido, G. De Rosa, M. Della Valle, G. Dellacasa, S. De Pasquale, A. V. Derbin, A. Devoto, L. Di Noto, C. Dionisi, P. Di Stefano, G. Dolganov, F. Dordei, L. Doria, M. Downing, T. Erjavec, M. Fernandez Diaz, G. Fiorillo, A. Franceschi, D. Franco, E. Frolov, N. Funicello, F. Gabriele, C. Galbiati, M. Garbini, P. Garcia Abia, A. Gendotti, C. Ghiano, R. A. Giampaolo, C. Giganti, M. A. Giorgi, G. K. Giovanetti, V. Goicoechea Casanueva, A. Gola, R. Graciani Diaz, G. Y. Grigoriev, A. Grobov, M. Gromov, M. Guan, M. Guerzoni, M. Gulino, C. Guo, B. R. Hackett, A. Hallin, M. Haranczyk, S. Hill, S. Horikawa, F. Hubaut, T. Hugues, E. V. Hungerford, An. Ianni, V. Ippolito, C. C. James, C. Jillings, P. Kachru, A. A. Kemp, C. L. Kendziora, G. Keppel, A. V. Khomyakov, S. Kim, A. Kish, I. Kochanek, K. Kondo, G. Korga, A. Kubankin, R. Kugathasan, M. Kuss, M. Kuźniak, M. La Commara, M. Lai, S. Langrock, M. Leyton, X. Li, L. Lidey, M. Lissia, G. Longo, I. N. Machulin, L. Mapelli, A. Marasciulli, A. Margotti, S. M. Mari, J. Maricic, M. Martínez, A. D. Martinez Rojas, C. J. Martoff, A. Masoni, A. Mazzi, A. B. McDonald, J. Mclaughlin, A. Messina, P. D. Meyers, T. Miletic, R. Milincic, A. Moggi, A. Moharana, S. Moioli, J. Monroe, S. Morisi, M. Morrocchi, E. N. Mozhevitina, T. Mróz, V. N. Muratova, C. Muscas, L. Musenich, P. Musico, R. Nania, T. Napolitano, A. Navrer Agasson, M. Nessi, I. Nikulin, J. Nowak, A. Oleinik, V. Oleynikov, L. Pagani, M. Pallavicini, L. Pandola, E. Pantic, E. Paoloni, G. Paternoster, P. A. Pegoraro, K. Pelczar, L. A. Pellegrini, C. Pellegrino, F. Perotti, V. Pesudo, E. Picciau, F. Pietropaolo, C. Pira, A. Pocar, D. M. Poehlmann, S. Pordes, S. S. Poudel, P. Pralavorio, D. Price, F. Raffaelli, F. Ragusa, A. Ramirez, M. Razeti, A. Razeto, A. L. Renshaw, S. Rescia, M. Rescigno, F. Resnati, F. Retiere, L. P. Rignanese, C. Ripoli, A. Rivetti, J. Rode, L. Romero, M. Rossi, A. Rubbia, P. Salatino, O. Samoylov, E. Sánchez García, E. Sandford, S. Sanfilippo, D. Santone, R. Santorelli, C. Savarese, E. Scapparone, B. Schlitzer, G. Scioli, D. A. Semenov, B. Shaw, A. Shchagin, A. Sheshukov, M. Simeone, P. Skensved, M. D. Skorokhvatov, O. Smirnov, B. Smith, A. Sokolov, A. Steri, S. Stracka, V. Strickland, M. Stringer, S. Sulis, Y. Suvorov, A. M. Szelc, R. Tartaglia, G. Testera, T. N. Thorpe, A. Tonazzo, S. Torres-Lara, A. Tricomi, E. V. Unzhakov, G. Usai, T. Vallivilayil John, T. Viant, S. Viel, A. Vishneva, R. B. Vogelaar, M. Wada, H. Wang, Y. Wang, S. Westerdale, R. J. Wheadon, L. Williams, Ma. M. Wojcik, Ma. Wojcik, X. Xiao, C. Yang, Z. Ye, A. Zani, A. Zichichi, G. Zuzel, M. P. Zykova
Azam Zabihi, Xinran Li, Alejandro Ramirez, Manuel D. Da Rocha Rolo, Davide Franco, Federico Gabriele, Cristiano Galbiati, Michela Lai, Daniel R. Marlow, Andrew Renshaw, Shawn Westerdale, Masayuki Wada
Objective: This paper introduces a novel PET imaging methodology called 3-dimensional positron imaging (3Dπ), which integrates total-body (TB) coverage, time-of-flight (TOF) technology, ultra-low dose imaging capabilities, and ultra-fast readout electronics inspired by emerging technology from the DarkSide collaboration. Approach: The study evaluates the performance of 3Dπ using Monte Carlo simulations based on NEMA NU 2-2018 protocols. The methodology employs a homogenous, monolithic scintillator composed of liquid argon (LAr) doped with xenon (Xe) with silicon photomultipliers (SiPM) operating at cryogenic temperatures. Main results: Significant enhancements in system performance are observed, with the 3Dπ system achieving a noise equivalent count rate (NECR) of 3.2 Mcps which is approximately two times higher than uEXPLORER's peak NECR (1.5 Mcps) at 17.3 (kBq/mL). Spatial resolution measurements show an average FWHM of 2.7 mm across both axial positions. The system exhibits superior sensitivity, with values reaching 373 kcps/MBq with a line source at the center of the field of view. Additionally, 3Dπ achieves a TOF resolution of 151 ps at 5.3 kBq/mL, highlighting its potential to produce high-quality images with reduced noise levels. Significance: The study underscores the potential of 3Dπ in improving PET imaging performance, offering the potential for shorter scan times and reduced radiation exposure for patients. The Xe-doped LAr offers advantages such as fast scintillation, enhanced light yield, and cost-effectiveness. Future research will focus on optimizing system geometry and further refining reconstruction algorithms to exploit the strengths of 3Dπ for clinical applications.
Thomas Alexander, Henning O. Back, Walter Bonivento, Mark Boulay, Philippe Collon, Zhongyi Feng, Michael Foxe, Pablo García Abia, Pietro Giampa, Christopher Jackson, Christine Johnson, Emily Mace, Peter Mueller, László Palcsu, Walter Pettus, Roland Purtschert, Andrew Renshaw, Richard Saldanha, Kate Scholberg, Marino Simeone, Ondřej Šrámek, Rex Tayloe, Ward TeGrotenhuis, Signe White, Richard Williams
In response to the growing need for low-radioactivity argon, community experts and interested parties came together for a 2-day workshop to discuss the worldwide low-radioactivity argon needs and the challenges associated with its production and characterization. Several topics were covered: experimental needs and requirements for low-radioactivity argon, the sources of low-radioactivity argon and its production, how long-lived argon radionuclides are created in nature, measuring argon radionuclides, and other applicable topics. The Low-Radioactivity Underground Argon (LRUA) workshop took place on March 19-20, 2018 at Pacific Northwest National Laboratory in Richland Washington, USA. This paper is a synopsis of the workshop with the associated abstracts from the talks.
Yi Wang, Alden Fan, Giuliana Fiorillo, Cristiano Galbiati, Meng-Yun Guan, George Korga, Emilija Pantic, Alessandro Razeto, Andrew Renshaw, Biagio Rossi, Yury Suvorov, Hanguo Wang, Chang-Gen Yang
Rare event search experiments, such as those searching for dark matter and observations of neutrinoless double beta decay, require ultra low levels of radioactive background for unmistakable identification. In order to reduce the radioactive backgrounds of detectors used in these types of event searches, low background photosensors are required, as the physical size of these detectors become increasing larger, and hence the number of such photosensors used also increases rapidly. Considering that most dark matter and neutrinoless double beta decay experiments are turning towards using noble liquids as the target choice, liquid xenon and liquid argon for instance, photosensors that can work well at cryogenic temperatures are required, 165 K and 87 K for liquid xenon and liquid argon, respectively. The Silicon Geiger Hybrid Tube (SiGHT) is a novel photosensor designed specifically for use in ultra low background experiments operating at cryogenic temperatures. It is based on the proven photocathode plus silicon photomultiplier (SiPM) hybrid technology and consists of very few other, but also ultra radio-pure, materials like fused silica and silicon for the SiPM. The introduction of the SiGHT concept, as well as a feasibility study for its production, is reported in this paper.
The DarkSide-50 Collaboration, :, P. Agnes, I. F. M. Albuquerque, T. Alexander, A. K. Alton, M. Ave, H. O. Back, G. Batignani, K. Biery, V. Bocci, W. M. Bonivento, B. Bottino, S. Bussino, M. Cadeddu, M. Cadoni, F. Calaprice, A. Caminata, N. Canci, M. Caravati, M. Cariello, M. Carlini, M. Carpinelli, S. Catalanotti, V. Cataudella, P. Cavalcante, S. Cavuoti, A. Chepurnov, C. Cicalo, A. G. Cocco, G. Covone, D. D'Angelo, S. Davini, A. De Candia, S. De Cecco, G. De Filippis, G. De Rosa, A. V. Derbin, A. Devoto, M. D'Incecco, C. Dionisi, F. Dordei, M. Downing, D. D'Urso, G. Fiorillo, D. Franco, F. Gabriele, C. Galbiati, C. Ghiano, C. Giganti, G. K. Giovanetti, O. Gorchakov, A. M. Goretti, A. Grobov, M. Gromov, M. Guan, Y. Guardincerri, M. Gulino, B. R. Hackett, K. Herner, B. Hosseini, F. Hubaut, E. V. Hungerford, An. Ianni, V. Ippolito, K. Keeter, C. L. Kendziora, I. Kochanek, D. Korablev, G. Korga, A. Kubankin, M. Kuss, M. La Commara, M. Lai, X. Li, M. Lissia, G. Longo, I. N. Machulin, L. P. Mapelli, S. M. Mari, J. Maricic, C. J. Martoff, A. Messina, P. D. Meyers, R. Milincic, M. Morrocchi, V. N. Muratova, P. Musico, A. Navrer Agasson, A. O. Nozdrina, A. Oleinik, F. Ortica, L. Pagani, M. Pallavicini, L. Pandola, E. Pantic, E. Paoloni, K. Pelczar, N. Pelliccia, E. Picciau, A. Pocar, S. Pordes, S. S. Poudel, P. Pralavorio, F. Ragusa, M. Razeti, A. Razeto, A. L. Renshaw, M. Rescigno, J. Rode, A. Romani, D. Sablone, O. Samoylov, W. Sands, S. Sanfilippo, C. Savarese, B. Schlitzer, D. A. Semenov, A. Shchagin, A. Sheshukov, M. D. Skorokhvatov, O. Smirnov, A. Sotnikov, S. Stracka, Y. Suvorov, R. Tartaglia, G. Testera, A. Tonazzo, E. V. Unzhakov, A. Vishneva, R. B. Vogelaar, M. Wada, H. Wang, Y. Wang, S. Westerdale, Ma. M. Wojcik, X. Xiao, C. Yang, G. Zuzel
Finding unequivocal evidence of dark matter interactions in a particle detector is a major objective of physics research. Liquid argon time projection chambers offer a path to probe Weakly Interacting Massive Particles scattering cross sections on nucleus down to the so-called neutrino floor, in a mass range from few GeV's to hundredths of TeV's. Based on the successful operation of the DarkSide-50 detector at LNGS, a new and more sensitive experiment, DarkSide-20k, has been designed and is now under construction. A thorough understanding of the DarkSide-50 detector response and, therefore, of all kind of observed events, is essential for an optimal design of the new experiment. In this paper, we report on a particular set of events, which were not used for dark matter searches. Namely, standard two-pulse scintillation-ionization signals accompanied by a small amplitude third pulse, originating from single or few electrons, in a time window of less than a maximum drift time. We compare our findings to those of a recent paper of the LUX Collaboration (D.S.Akerib et al. Phys.Rev.D 102, 092004). Indeed, both experiments observe events related to photoionization of the cathode. From the measured rate of these events, we estimate for the first time the quantum efficiency of the tetraphenyl butadiene deposited on the DarkSide-50 cathode at wavelengths around 128 nm, in liquid argon. Also, both experiments observe events likely related to photoionization of impurities in the liquid. The probability of photoelectron emission per unit length turns out to be one order of magnitude smaller in DarkSide-50 than in LUX. This result, together with the much larger measured electron lifetime, coherently hints toward a lower concentration of contaminants in DarkSide-50 than in LUX.
The DarkSide Collaboration, P. Agnes, I. F. M. Albuquerque, T. Alexander, A. K. Alton, G. R. Araujo, M. Ave, H. O. Back, B. Baldin, G. Batignani, K. Biery, V. Bocci, G. Bonfini, W. Bonivento, B. Bottino, F. Budano, S. Bussino, M. Cadeddu, M. Cadoni, F. Calaprice, A. Caminata, N. Canci, A. Candela, M. Caravati, M. Cariello, M. Carlini, M. Carpinelli, S. Catalanotti, V. Cataudella, P. Cavalcante, S. Cavuoti, A. Chepurnov, C. Cicalò, A. G. Cocco, G. Covone, D. D'Angelo, M. D'Incecco, D. D'Urso, S. Davini, A. De Candia, S. De Cecco, M. De Deo, G. De Filippis, G. De Rosa, M. De Vincenzi, A. V. Derbin, A. Devoto, F. Di Eusanio, G. Di Pietro, C. Dionisi, M. Downing, E. Edkins, A. Empl, A. Fan, G. Fiorillo, R. S. Fitzpatrick, K. Fomenko, D. Franco, F. Gabriele, C. Galbiati, C. Ghiano, S. Giagu, C. Giganti, G. K. Giovanetti, O. Gorchakov, A. M. Goretti, F. Granato, M. Gromov, M. Guan, Y. Guardincerri, M. Gulino, B. R. Hackett, K. Herner, B. Hosseini, D. Hughes, P. Humble, E. V. Hungerford, An. Ianni, V. Ippolito, I. James, T. N. Johnson, K. Keeter, C. L. Kendziora, I. Kochanek, G. Koh, D. Korablev, G. Korga, A. Kubankin, M. Kuss, M. La Commara, M. Lai, X. Li, M. Lissia, G. Longo, Y. Ma, A. A. Machado, I. N. Machulin, A. Mandarano, L. Mapelli, S. M. Mari, J. Maricic, C. J. Martoff, A. Messina, P. D. Meyers, R. Milincic, A. Monte, M. Morrocchi, B. J. Mount, V. N. Muratova, P. Musico, A. Navrer Agasson, A. O. Nozdrina, A. Oleinik, M. Orsini, F. Ortica, L. Pagani, M. Pallavicini, L. Pandola, E. Pantic, E. Paoloni, K. Pelczar, N. Pelliccia, A. Pocar, S. Pordes, S. S. Poudel, D. A. Pugachev, H. Qian, F. Ragusa, M. Razeti, A. Razeto, B. Reinhold, A. L. Renshaw, M. Rescigno, Q. Riffard, A. Romani, B. Rossi, N. Rossi, D. Sablone, O. Samoylov, W. Sands, S. Sanfilippo, C. Savarese, B. Schlitzer, E. Segreto, D. A. Semenov, A. Shchagin, A. Sheshukov, P. N. Singh, M. D. Skorokhvatov, O. Smirnov, A. Sotnikov, C. Stanford, S. Stracka, Y. Suvorov, R. Tartaglia, G. Testera, A. Tonazzo, P. Trinchese, E. V. Unzhakov, M. Verducci, A. Vishneva, B. Vogelaar, M. Wada, T. J. Waldrop, H. Wang, Y. Wang, A. W. Watson, S. Westerdale, M. M. Wojcik, X. Xiang, X. Xiao, C. Yang, Z. Ye, C. Zhu, G. Zuzel
The DarkSide Collaboration, P. Agnes, I. F. M. Albuquerque, T. Alexander, A. K. Alton, G. R. Araujo, D. M. Asner, M. Ave, H. O. Back, B. Baldin, G. Batignani, K. Biery, V. Bocci, G. Bonfini, W. Bonivento, B. Bottino, F. Budano, S. Bussino, M. Cadeddu, M. Cadoni, F. Calaprice, A. Caminata, N. Canci, A. Candela, M. Caravati, M. Cariello, M. Carlini, M. Carpinelli, S. Catalanotti, V. Cataudella, P. Cavalcante, S. Cavuoti, R. Cereseto, A. Chepurnov, C. Cicalò, L. Cifarelli, A. G. Cocco, G. Covone, D. D'Angelo, M. D'Incecco, D. D'Urso, S. Davini, A. De Candia, S. De Cecco, M. De Deo, G. De Filippis, G. De Rosa, M. De Vincenzi, P. Demontis, A. V. Derbin, A. Devoto, F. Di Eusanio, G. Di Pietro, C. Dionisi, M. Downing, E. Edkins, A. Empl, A. Fan, G. Fiorillo, K. Fomenko, D. Franco, F. Gabriele, A. Gabrieli, C. Galbiati, P. Garcia Abia, C. Ghiano, S. Giagu, C. Giganti, G. K. Giovanetti, O. Gorchakov, A. M. Goretti, F. Granato, M. Gromov, M. Guan, Y. Guardincerri, M. Gulino, B. R. Hackett, M. H. Hassanshahi, K. Herner, B. Hosseini, D. Hughes, P. Humble, E. V. Hungerford, Al. Ianni, An. Ianni, V. Ippolito, I. James, T. N. Johnson, Y. Kahn, K. Keeter, C. L. Kendziora, I. Kochanek, G. Koh, D. Korablev, G. Korga, A. Kubankin, M. Kuss, M. La Commara, M. Lai, X. Li, M. Lisanti, M. Lissia, B. Loer, G. Longo, Y. Ma, A. A. Machado, I. N. Machulin, A. Mandarano, L. Mapelli, S. M. Mari, J. Maricic, C. J. Martoff, A. Messina, P. D. Meyers, R. Milincic, S. Mishra-Sharma, A. Monte, M. Morrocchi, B. J. Mount, V. N. Muratova, P. Musico, R. Nania, A. Navrer Agasson, A. O. Nozdrina, A. Oleinik, M. Orsini, F. Ortica, L. Pagani, M. Pallavicini, L. Pandola, E. Pantic, E. Paoloni, F. Pazzona, K. Pelczar, N. Pelliccia, V. Pesudo, E. Picciau, A. Pocar, S. Pordes, S. S. Poudel, D. A. Pugachev, H. Qian, F. Ragusa, M. Razeti, A. Razeto, B. Reinhold, A. L. Renshaw, M. Rescigno, Q. Riffard, A. Romani, B. Rossi, N. Rossi, D. Sablone, O. Samoylov, W. Sands, S. Sanfilippo, M. Sant, R. Santorelli, C. Savarese, E. Scapparone, B. Schlitzer, E. Segreto, D. A. Semenov, A. Shchagin, A. Sheshukov, P. N. Singh, M. D. Skorokhvatov, O. Smirnov, A. Sotnikov, C. Stanford, S. Stracka, G. B. Suffritti, Y. Suvorov, R. Tartaglia, G. Testera, A. Tonazzo, P. Trinchese, E. V. Unzhakov, M. Verducci, A. Vishneva, B. Vogelaar, M. Wada, T. J. Waldrop, H. Wang, Y. Wang, A. W. Watson, S. Westerdale, M. M. Wojcik, M. Wojcik, X. Xiang, X. Xiao, C. Yang, Z. Ye, C. Zhu, A. Zichichi, G. Zuzel
Henning O. Back, Walter Bonivento, Mark Boulay, Eric Church, Steven R. Elliott, Federico Gabriele, Cristiano Galbiati, Graham K. Giovanetti, Christopher Jackson, Art McDonald, Andrew Renshaw, Roberto Santorelli, Kate Scholberg, Marino Simeone, Rex Tayloe, Richard Van de Water
The DarkSide-50 experiment demonstrated the ability to extract and purify argon from deep underground sources and showed that the concentration of $^{39}$Ar in that argon was greatly reduced from the level found in argon derived from the atmosphere. That discovery broadened the physics reach of argon-based detector and created a demand for low-radioactivity underground argon (UAr) in high-energy physics, nuclear physics, and in environmental and allied sciences. The Global Argon Dark Matter Collaboration (GADMC) is preparing to produce UAr for DarkSide-20k, but a general UAr supply for the community does not exist. With the proper resources, those plants could be operated as a facility to supply UAr for most of the experiments after the DarkSide 20k production. However, if the current source becomes unavailable, or UAr masses greater than what is available from the current source is needed, then a new source must be found. To find a new source will require understanding the production of the radioactive argon isotopes underground in a gas field, and the ability to measure $^{37}$Ar, $^{39}$Ar, and $^{42}$Ar to ultra-low levels. The operation of a facility creates a need for ancillary systems to monitor for $^{37}$Ar, $^{39}$Ar, or $^{42}$Ar infiltration either directly or indirectly, which can also be used to vet the $^{37}$Ar, $^{39}$Ar, and $^{42}$Ar levels in a new UAr source, but requires the ability to separate UAr from the matrix well gas. Finding methods to work with industry to find gas streams enriched in UAr, or to commercialize a UAr facility, are highly desirable.
Marco Battaglieri, Alberto Belloni, Aaron Chou, Priscilla Cushman, Bertrand Echenard, Rouven Essig, Juan Estrada, Jonathan L. Feng, Brenna Flaugher, Patrick J. Fox, Peter Graham, Carter Hall, Roni Harnik, JoAnne Hewett, Joseph Incandela, Eder Izaguirre, Daniel McKinsey, Matthew Pyle, Natalie Roe, Gray Rybka, Pierre Sikivie, Tim M. P. Tait, Natalia Toro, Richard Van De Water, Neal Weiner, Kathryn Zurek, Eric Adelberger, Andrei Afanasev, Derbin Alexander, James Alexander, Vasile Cristian Antochi, David Mark Asner, Howard Baer, Dipanwita Banerjee, Elisabetta Baracchini, Phillip Barbeau, Joshua Barrow, Noemie Bastidon, James Battat, Stephen Benson, Asher Berlin, Mark Bird, Nikita Blinov, Kimberly K. Boddy, Mariangela Bondi, Walter M. Bonivento, Mark Boulay, James Boyce, Maxime Brodeur, Leah Broussard, Ranny Budnik, Philip Bunting, Marc Caffee, Sabato Stefano Caiazza, Sheldon Campbell, Tongtong Cao, Gianpaolo Carosi, Massimo Carpinelli, Gianluca Cavoto, Andrea Celentano, Jae Hyeok Chang, Swapan Chattopadhyay, Alvaro Chavarria, Chien-Yi Chen, Kenneth Clark, John Clarke, Owen Colegrove, Jonathon Coleman, David Cooke, Robert Cooper, Michael Crisler, Paolo Crivelli, Francesco D'Eramo, Domenico D'Urso, Eric Dahl, William Dawson, Marzio De Napoli, Raffaella De Vita, Patrick DeNiverville, Stephen Derenzo, Antonia Di Crescenzo, Emanuele Di Marco, Keith R. Dienes, Milind Diwan, Dongwi Handiipondola Dongwi, Alex Drlica-Wagner, Sebastian Ellis, Anthony Chigbo Ezeribe, Glennys Farrar, Francesc Ferrer, Enectali Figueroa-Feliciano, Alessandra Filippi, Giuliana Fiorillo, Bartosz Fornal, Arne Freyberger, Claudia Frugiuele, Cristian Galbiati, Iftah Galon, Susan Gardner, Andrew Geraci, Gilles Gerbier, Mathew Graham, Edda Gschwendtner, Christopher Hearty, Jaret Heise, Reyco Henning, Richard J. Hill, David Hitlin, Yonit Hochberg, Jason Hogan, Maurik Holtrop, Ziqing Hong, Todd Hossbach, T. B. Humensky, Philip Ilten, Kent Irwin, John Jaros, Robert Johnson, Matthew Jones, Yonatan Kahn, Narbe Kalantarians, Manoj Kaplinghat, Rakshya Khatiwada, Simon Knapen, Michael Kohl, Chris Kouvaris, Jonathan Kozaczuk, Gordan Krnjaic, Valery Kubarovsky, Eric Kuflik, Alexander Kusenko, Rafael Lang, Kyle Leach, Tongyan Lin, Mariangela Lisanti, Jing Liu, Kun Liu, Ming Liu, Dinesh Loomba, Joseph Lykken, Katherine Mack, Jeremiah Mans, Humphrey Maris, Thomas Markiewicz, Luca Marsicano, C. J. Martoff, Giovanni Mazzitelli, Christopher McCabe, Samuel D. McDermott, Art McDonald, Bryan McKinnon, Dongming Mei, Tom Melia, Gerald A. Miller, Kentaro Miuchi, Sahara Mohammed Prem Nazeer, Omar Moreno, Vasiliy Morozov, Frederic Mouton, Holger Mueller, Alexander Murphy, Russell Neilson, Tim Nelson, Christopher Neu, Yuri Nosochkov, Ciaran O'Hare, Noah Oblath, John Orrell, Jonathan Ouellet, Saori Pastore, Sebouh Paul, Maxim Perelstein, Annika Peter, Nguyen Phan, Nan Phinney, Michael Pivovaroff, Andrea Pocar, Maxim Pospelov, Josef Pradler, Paolo Privitera, Stefano Profumo, Mauro Raggi, Surjeet Rajendran, Nunzio Randazzo, Tor Raubenheimer, Christian Regenfus, Andrew Renshaw, Adam Ritz, Thomas Rizzo, Leslie Rosenberg, Andre Rubbia, Ben Rybolt, Tarek Saab, Benjamin R. Safdi, Elena Santopinto, Andrew Scarff, Michael Schneider, Philip Schuster, George Seidel, Hiroyuki Sekiya, Ilsoo Seong, Gabriele Simi, Valeria Sipala, Tracy Slatyer, Oren Slone, Peter F Smith, Jordan Smolinsky, Daniel Snowden-Ifft, Matthew Solt, Andrew Sonnenschein, Peter Sorensen, Neil Spooner, Brijesh Srivastava, Ion Stancu, Louis Strigari, Jan Strube, Alexander O. Sushkov, Matthew Szydagis, Philip Tanedo, David Tanner, Rex Tayloe, William Terrano, Jesse Thaler, Brooks Thomas, Brianna Thorpe, Thomas Thorpe, Javier Tiffenberg, Nhan Tran, Marco Trovato, Christopher Tully, Tony Tyson, Tanmay Vachaspati, Sven Vahsen, Karl van Bibber, Justin Vandenbroucke, Anthony Villano, Tomer Volansky, Guojian Wang, Thomas Ward, William Wester, Andrew Whitbeck, David A. Williams, Matthew Wing, Lindley Winslow, Bogdan Wojtsekhowski, Hai-Bo Yu, Shin-Shan Yu, Tien-Tien Yu, Xilin Zhang, Yue Zhao, Yi-Ming Zhong
The DarkSide collaboration, P. Agnes, I. F. M. Albuquerque, T. Alexander, A. K. Alton, M. Ave, H. O. Back, G. Batignani, K. Biery, V. Bocci, W. M. Bonivento, B. Bottino, S. Bussino, M. Cadeddu, M. Cadoni, F. Calaprice, A. Caminata, N. Canci, M. Caravati, M. Cariello, M. Carlini, M. Carpinelli, S. Catalanotti, V. Cataudella, P. Cavalcante, S. Cavuoti, A. Chepurnov, C. Cicalò, A. G. Cocco, G. Covone, D. D'Angelo, S. Davini, A. De Candia, S. De Cecco, G. De Filippis, G. De Rosa, A. V. Derbin, A. Devoto, M. D'Incecco, C. Dionisi, F. Dordei, M. Downing, D. D'Urso, G. Fiorillo, D. Franco, F. Gabriele, C. Galbiati, C. Ghiano, C. Giganti, G. K. Giovanetti, O. Gorchakov, A. M. Goretti, A. Grobov, M. Gromov, M. Guan, Y. Guardincerri, M. Gulino, B. R. Hackett, K. Herner, B. Hosseini, F. Hubaut, E. V. Hungerford, An. Ianni, V. Ippolito, K. Keeter, C. L. Kendziora, I. Kochanek, D. Korablev, G. Korga, A. Kubankin, M. Kuss, M. La Commara, M. Lai, X. Li, M. Lissia, G. Longo, I. N. Machulin, L. P. Mapelli, S. M. Mari, J. Maricic, C. J. Martoff, A. Messina, P. D. Meyers, R. Milincic, M. Morrocchi, X. Mougeot, V. N. Muratova, P. Musico, A. Navrer Agasson, A. O. Nozdrina, A. Oleinik, F. Ortica, L. Pagani, M. Pallavicini, L. Pandola, E. Pantic, E. Paoloni, K. Pelczar, N. Pelliccia, E. Picciau, A. Pocar, S. Pordes, S. S. Poudel, P. Pralavorio, F. Ragusa, M. Razeti, A. Razeto, A. L. Renshaw, M. Rescigno, J. Rode, A. Romani, D. Sablone, O. Samoylov, W. Sands, S. Sanfilippo, C. Savarese, B. Schlitzer, D. A. Semenov, A. Shchagin, A. Sheshukov, M. D. Skorokhvatov, O. Smirnov, A. Sotnikov, S. Stracka, Y. Suvorov, R. Tartaglia, G. Testera, A. Tonazzo, E. V. Unzhakov, A. Vishneva, R. B. Vogelaar, M. Wada, H. Wang, Y. Wang, S. Westerdale, M. M. Wojcik, X. Xiao, C. Yang, G. Zuzel
DarkSide-50 has demonstrated the high potential of dual-phase liquid argon time projection chambers in exploring interactions of WIMPs in the GeV/c$^2$ mass range. The technique, based on the detection of the ionization signal amplified via electroluminescence in the gas phase, allows to explore recoil energies down to the sub-keV range. We report here on the DarkSide-50 measurement of the ionization yield of electronic recoils down to $\sim$180~eV$_{er}$, exploiting $^{37}$Ar and $^{39}$Ar decays, and extrapolated to a few ionization electrons with the Thomas-Imel box model. Moreover, we present a model-dependent determination of the ionization response to nuclear recoils down to $\sim$500~eV$_{nr}$, the lowest ever achieved in liquid argon, using \textit{in situ} neutron calibration sources and external datasets from neutron beam experiments.
A. Renshaw, K. Abe, Y. Hayato, K. Iyogi, J. Kameda, Y. Kishimoto, M. Miura, S. Moriyama, M. Nakahata, Y. Nakano, S. Nakayama, H. Sekiya, M. Shiozawa, Y. Suzuki, A. Takeda, Y. Takenaga, T. Tomura, K. Ueno, T. Yokozawa, R. A. Wendell, T. Irvine, T. Kajita, K. Kaneyuki, K. P. Lee, Y. Nishimura, K. Okumura, T. McLachlan, L. Labarga, S. Berkman, H. A. Tanaka, S. Tobayama, E. Kearns, J. L. Raaf, J. L. Stone, L. R. Sulak, M. Goldhabar, K. Bays, G. Carminati, W. R. Kropp, S. Mine, M. B. Smy, H. W. Sobel, K. S. Ganezer, J. Hill, W. E. Keig, N. Hong, J. Y. Kim, I. T. Lim, T. Akiri, A. Himmel, K. Scholberg, C. W. Walter, T. Wongjirad, T. Ishizuka, S. Tasaka, J. S. Jang, J. G. Learned, S. Matsuno, S. N. Smith, T. Hasegawa, T. Ishida, T. Ishii, T. Kobayashi, T. Nakadaira, K. Nakamura, Y. Oyama, K. Sakashita, T. Sekiguchi, T. Tsukamoto, A. T. Suzuki, Y. Takeuchi, C. Bronner, S. Hirota, K. Huang, K. Ieki, M. Ikeda, T. Kikawa, A. Minamino, T. Nakaya, K. Suzuki, S. Takahashi, Y. Fukuda, K. Choi, Y. Itow, G. Mitsuka, P. Mijakowski, J. Hignight, J. Imber, C. K. Jung, C. Yanagisawa, H. Ishino, A. Kibayashi, Y. Koshio, T. Mori, M. Sakuda, T. Yano, Y. Kuno, R. Tacik, S. B. Kim, H. Okazawa, Y. Choi, K. Nishijima, M. Koshiba, Y. Totsuka, M. Yokoyama, K. Martens, Ll. Marti, M. R. Vagins, J. F. Martin, P. de Perio, A. Konaka, M. J. Wilking, S. Chen, Y. Zhang, R. J. Wilkes
We report an indication that the elastic scattering rate of solar $^8$B neutrinos with electrons in the Super-Kamiokande detector is larger when the neutrinos pass through the Earth during nighttime. We determine the day/night asymmetry, defined as the difference of the average day rate and average night rate divided by the average of those two rates, to be $(-3.2\pm1.1(\text{stat})\pm0.5(\text{syst}))\%$, which deviates from zero by 2.7 $σ$. Since the elastic scattering process is mostly sensitive to electron-flavored solar neutrinos, a non-zero day/night asymmetry implies that the flavor oscillations of solar neutrinos are affected by the presence of matter within the neutrinos' flight path. Super-Kamiokande's day/night asymmetry is consistent with neutrino oscillations for $4\times10^{-5}$eV$^2\leqΔm^2_{21}\leq7\times10^{-5}$eV$^2$ and large mixing values of $θ_{12}$, at the $68\%$ C.L.
C. E. Aalseth, F. Acerbi, P. Agnes, I. F. M. Albuquerque, T. Alexander, A. Alici, A. K. Alton, P. Antonioli, S. Arcelli, R. Ardito, I. J. Arnquist, D. M. Asner, M. Ave, H. O. Back, A. I. Barrado Olmedo, G. Batignani, E. Bertoldo, S. Bettarini, M. G. Bisogni, V. Bocci, A. Bondar, G. Bonfini, W. Bonivento, M. Bossa, B. Bottino, M. Boulay, R. Bunker, S. Bussino, A. Buzulutskov, M. Cadeddu, M. Cadoni, A. Caminata, N. Canci, A. Candela, C. Cantini, M. Caravati, M. Cariello, M. Carlini, M. Carpinelli, A. Castellani, S. Catalanotti, V. Cataudella, P. Cavalcante, S. Cavuoti, R. Cereseto, A. Chepurnov, C. Cicalò, L. Cifarelli, M. Citterio, A. G. Cocco, M. Colocci, S. Corgiolu, G. Covone, P. Crivelli, I. D'Antone, M. D'Incecco, D. D'Urso, M. D. Da Rocha Rolo, M. Daniel, S. Davini, A. de Candia, S. De Cecco, M. De Deo, G. De Filippis, G. De Guido, G. De Rosa, G. Dellacasa, M. Della Valle, P. Demontis, A. Derbin, A. Devoto, F. Di Eusanio, G. Di Pietro, C. Dionisi, A. Dolgov, I. Dormia, S. Dussoni, A. Empl, M. Fernandez Diaz, A. Ferri, C. Filip, G. Fiorillo, K. Fomenko, D. Franco, G. E. Froudakis, F. Gabriele, A. Gabrieli, C. Galbiati, P. Garcia Abia, A. Gendotti, A. Ghisi, S. Giagu, P. Giampa, G. Gibertoni, C. Giganti, M. A. Giorgi, G. K. Giovanetti, M. L. Gligan, A. Gola, O. Gorchakov, A. M. Goretti, F. Granato, M. Grassi, J. W. Grate, G. Y. Grigoriev, M. Gromov, M. Guan, M. B. B. Guerra, M. Guerzoni, M. Gulino, R. K. Haaland, A. Hallin, B. Harrop, E. W. Hoppe, S. Horikawa, B. Hosseini, D. Hughes, P. Humble, E. V. Hungerford, An. Ianni, C. Jillings, T. N. Johnson, K. Keeter, C. L. Kendziora, S. Kim, G. Koh, D. Korablev, G. Korga, A. Kubankin, M. Kuss, M. Kuźniak, B. Lehnert, X. Li, M. Lissia, G. U. Lodi, B. Loer, G. Longo, P. Loverre, R. Lussana, L. Luzzi, Y. Ma, A. A. Machado, I. N. Machulin, A. Mandarano, L. Mapelli, M. Marcante, A. Margotti, S. M. Mari, M. Mariani, J. Maricic, C. J. Martoff, M. Mascia, M. Mayer, A. B. McDonald, A. Messina, P. D. Meyers, R. Milincic, A. Moggi, S. Moioli, J. Monroe, A. Monte, M. Morrocchi, B. J. Mount, W. Mu, V. N. Muratova, S. Murphy, P. Musico, R. Nania, A. Navrer Agasson, I. Nikulin, V. Nosov, A. O. Nozdrina, N. N. Nurakhov, A. Oleinik, V. Oleynikov, M. Orsini, F. Ortica, L. Pagani, M. Pallavicini, S. Palmas, L. Pandola, E. Pantic, E. Paoloni, G. Paternoster, V. Pavletcov, F. Pazzona, S. Peeters, K. Pelczar, L. A. Pellegrini, N. Pelliccia, F. Perotti, R. Perruzza, V. Pesudo Fortes, C. Piemonte, F. Pilo, A. Pocar, T. Pollmann, D. Portaluppi, D. A. Pugachev, H. Qian, B. Radics, F. Raffaelli, F. Ragusa, M. Razeti, A. Razeto, V. Regazzoni, C. Regenfus, B. Reinhold, A. L. Renshaw, M. Rescigno, F. Retière, Q. Riffard, A. Rivetti, S. Rizzardini, A. Romani, L. Romero, B. Rossi, N. Rossi, A. Rubbia, D. Sablone, P. Salatino, O. Samoylov, E. Sánchez García, W. Sands, M. Sant, R. Santorelli, C. Savarese, E. Scapparone, B. Schlitzer, G. Scioli, E. Segreto, A. Seifert, D. A. Semenov, A. Shchagin, L. Shekhtman, E. Shemyakina, A. Sheshukov, M. Simeone, P. N. Singh, P. Skensved, M. D. Skorokhvatov, O. Smirnov, G. Sobrero, A. Sokolov, A. Sotnikov, F. Speziale, R. Stainforth, C. Stanford, G. B. Suffritti, Y. Suvorov, R. Tartaglia, G. Testera, A. Tonazzo, A. Tosi, P. Trinchese, E. V. Unzhakov, A. Vacca, E. Vázquez-Jáuregui, M. Verducci, T. Viant, F. Villa, A. Vishneva, B. Vogelaar, M. Wada, J. Wahl, J. Walding, S. Walker, H. Wang, Y. Wang, A. W. Watson, S. Westerdale, R. Williams, M. M. Wojcik, S. Wu, X. Xiang, X. Xiao, C. Yang, Z. Ye, A. Yllera de Llano, F. Zappa, G. Zappalà, C. Zhu, A. Zichichi, M. Zullo, A. Zullo
Amy Roberts, Christopher Tunnell, Belina von Krosigk, Tyler Anderson, Jason Brodsky, Micah Buuck, Tina Cartaro, Melissa Cragin, Gavin S. Davies, Miriam Diamond, Alden Fan, Aaron Higuera, Valerio Ippolito, Chris Jillings, Scott Kravitz, Luke Krezko, Ivy Li, Maria Elena Monzani, Igor Ostrovskiy, Fernanda Psihas, Andrew Renshaw, Quentin Riffard, Joel Sander, Samuele Sangiorgio, Reto Trappitsch, Dennis Wright
This paper summarizes the needs of the dark matter and neutrino communities as it relates to computation. The scope includes data acquisition, triggers, data management and processing, data preservation, simulation, machine learning, data analysis, software engineering, career development, and equity and inclusion. Beyond identifying our community needs, we propose actions that can be taken to strengthen this community and to work together to overcome common challenges.
P. Agnes, J. Dawson, S. De Cecco, A. Fan, G. Fiorillo, D. Franco, C. Galbiati, C. Giganti, T. N. Johnson, G. Korga, D. Kryn, M. Lebois, A. Mandarano, C. J. Martoff, A. Navrer-Agasson, E. Pantic, L. Qi, A. Razeto, A. L. Renshaw, Q. Riffard, B. Rossi, C. Savarese, B. Schlitzer, Y. Suvorov, A. Tonazzo, H. Wang, Y. Wang, A. W. Watson, J. N. Wilson
A liquid argon time projection chamber, constructed for the Argon Response to Ionization and Scintillation (ARIS) experiment, has been exposed to the highly collimated and quasi-monoenergetic LICORNE neutron beam at the Institute de Physique Nuclaire Orsay in order to study the scintillation response to nuclear and electronic recoils. An array of liquid scintillator detectors, arranged around the apparatus, tag scattered neutrons and select nuclear recoil energies in the [7, 120] keV energy range. The relative scintillation efficiency of nuclear recoils was measured to high precision at null field, and the ion-electron recombination probability was extracted for a range of applied electric fields. Single Compton scattered electrons, produced by gammas emitted from the de-excitation of $^7$Li* in coincidence with the beam pulse, along with calibration gamma sources, are used to extract the recombination probability as a function of energy and electron drift field. The ARIS results have been compared with three recombination probability parameterizations (Thomas-Imel, Doke-Birks, and PARIS), allowing for the definition of a fully comprehensive model of the liquid argon response to nuclear and electronic recoils down to a few keV range. The constraints provided by ARIS to the liquid argon response at low energy allow the reduction of systematics affecting the sensitivity of dark matter search experiments based on liquid argon
S. Al Kharusi, S. Y. BenZvi, J. S. Bobowski, W. Bonivento, V. Brdar, T. Brunner, E. Caden, M. Clark, A. Coleiro, M. Colomer-Molla, J. I. Crespo-Anadón, A. Depoian, D. Dornic, V. Fischer, D. Franco, W. Fulgione, A. Gallo Rosso, M. Geske, S. Griswold, M. Gromov, D. Haggard, A. Habig, O. Halim, A. Higuera, R. Hill, S. Horiuchi, K. Ishidoshiro, C. Kato, E. Katsavounidis, D. Khaitan, J. P. Kneller, A. Kopec, V. Kulikovskiy, M. Lai, M. Lamoureux, R. F. Lang, H. L. Li, M. Lincetto, C. Lunardini, J. Migenda, D. Milisavljevic, M. E. McCarthy, E. O'Connor, E. O'Sullivan, G. Pagliaroli, D. Patel, R. Peres, B. W. Pointon, J. Qin, N. Raj, A. Renshaw, A. Roeth, J. Rumleskie, K. Scholberg, A. Sheshukov, T. Sonley, M. Strait, V. Takhistov, I. Tamborra, J. Tseng, C. D. Tunnell, J. Vasel, C. F. Vigorito, B. Viren, C. J. Virtue, J. S. Wang, L. J. Wen, L. Winslow, F. L. H. Wolfs, X. J. Xu, Y. Xu
Oct 30, 2020·astro-ph.HE·PDF The next core-collapse supernova in the Milky Way or its satellites will represent a once-in-a-generation opportunity to obtain detailed information about the explosion of a star and provide significant scientific insight for a variety of fields because of the extreme conditions found within. Supernovae in our galaxy are not only rare on a human timescale but also happen at unscheduled times, so it is crucial to be ready and use all available instruments to capture all possible information from the event. The first indication of a potential stellar explosion will be the arrival of a bright burst of neutrinos. Its observation by multiple detectors worldwide can provide an early warning for the subsequent electromagnetic fireworks, as well as signal to other detectors with significant backgrounds so they can store their recent data. The Supernova Early Warning System (SNEWS) has been operating as a simple coincidence between neutrino experiments in automated mode since 2005. In the current era of multi-messenger astronomy there are new opportunities for SNEWS to optimize sensitivity to science from the next Galactic supernova beyond the simple early alert. This document is the product of a workshop in June 2019 towards design of SNEWS 2.0, an upgraded SNEWS with enhanced capabilities exploiting the unique advantages of prompt neutrino detection to maximize the science gained from such a valuable event.
Fabio Acerbi, Pushparaj Adhikari, Paolo Agnes, Iftikhar Ahmad, Sebastiano Albergo, Ivone F. M. Albuquerque, Thomas Olling Alexander, Andrew Knight Alton, Pierre-Andre Amaudruz, Gioacchino Alex Anastasi, Michele Angiolilli, Elena Aprile, David J. Auty, Maximo Ave Pernas, Oscar Azzolini, Henning Olling Back, Zoe Balmforth, Ana Isabel Barrado Olmedo, Pierre Barrillon, Giovanni Batignani, Swadheen Bharat, Pritindra Bhowmick, Sofia Blua, Valerio Bocci, Walter Bonivento, Bianca Bottino, Mark G. Boulay, Titanilla Braun, Andrzej Buchowicz, Severino Bussino, Jose Busto, Matteo Cadeddu, Mariano Cadoni, Roberta Calabrese, Vincenzo Camillo, Alessio Caminata, Nicola Canci, Andrea Capra, Mauro Caravati, Miguel Cardenas-Montes, Nicola Cargioli, Marco Carlini, Paolo Castello, Paolo Cavalcante, Susana Cebrian, Alexander Chepurnov, Sarthak Choudhary, Luisa Cifarelli, Yann Coadou, Ivan Coarasa, Valentina Cocco, Estefania Conde Vilda, Lucia Consiglio, Harrison Coombes, Andre Filipe Ventura Cortez, Barbara S. Costa, Milena Czubak, Saverio D'Auria, Manuel Dionisio Da Rocha Rolo, Alexander Dainty, Giovanni Darbo, Stefano Davini, Riccardo de Asmundis, Sandro De Cecco, Marzio De Napoli, Giulio Dellacasa, Alexander Derbin, Lea Di Noto, Philippe Di Stefano, Daniel Diaz Mairena, Carlo Dionisi, Grigory Dolganov, Francesca Dordei, Aaron Elersich, Emma Ellingwood, Tyler Erjavec, Niamh Fearon, Marta Fernandez Diaz, Luca Ferro, Andrea Ficorella, Giuliana Fiorillo, Dylon Fleming, Paolo Franchini, Davide Franco, Heriques Frandini Gatti, Federico Gabriele, Devidutta Gahan, Cristiano Galbiati, Grzegorz Galinski, Giacomo Gallina, Marco Garbini, Pablo Garcia Abia, Andrzej Gawdzik, Graham Kurt Giovanetti, Alberto Gola, Luca Grandi, Gianfrancesco Grauso, Giovanni Grilli di Cortona, Alexey Grobov, Maxim Gromov, Julian Guerrero Canovas, Marisa Gulino, Samuel Belayneh Habtemariam, Brianne Rae Hackett, Aksel Hallin, Malgorzata Haranczyk, Timothee Hessel, Celin Hidalgo, James Hollingham, Sosuke Horikawa, Jie Hu, Fabrice Hubaut, Daniel Huff, Theo Hugues, Andrea Ianni, Valerio Ippolito, Ako Jamil, Chris Jillings, Rijeesh Keloth, Nikolas Kemmerich, Ashlea Kemp, Kaori Kondo, George Korga, Lucy Kotsiopoulou, Seraphim Koulosousas, Pablo Kunze, Michael Kuss, Marcin Kuzniak, Maciej Kuzwa, Marco La Commara, Michela Lai, Emmanuel Le Guirriec, Elizabeth Leason, Alfiero Leoni, Lance Lidey, John D Lipp, Marcello Lissia, Ludovico Luzzi, Olga Lychagina, Oliver Macfadyen, Janna Machts, Igor Machulin, Szymon Manecki, Ioannis Manthos, Andrea Marasciulli, Stefano Maria Mari, Camillo Mariani, Jelena Maricic, Maria Martinez, Giuseppe Matteucci, Konstantinos Mavrokoridis, Arthur B. McDonald, Luo Meng, Stefano Merzi, Andrea Messina, Radovan Milincic, Graham Miller, Saverio Minutoli, Ankush Mitra, Jocelyn Monroe, Matteo Morrocchi, Abdulrahman Morsy, Valentina Muratova, Michael Murra, Carlo Muscas, Paolo Musico, Rosario Nania, Marzio Nessi, Grzegorz Nieradka, Konstantinos Nikolopoulos, Evangelia Nikoloudaki, Jaroslaw Nowak, Konstantin Olchanski, Andrey Oleinik, Paolo Organtini, Alfonso Ortiz de Solorzano, Anantha Padmanabhan, Marco Pallavicini, Luciano Pandola, Emilija Pantic, Eugenio Paoloni, Danial Papi, Byungju Park, Grzegorz Pastuszak, Giovanni Paternoster, Riccardo Pavarani, Alec Peck, Paolo Attilio Pegoraro, Krzysztof Pelczar, Ramon Perez, Vicente Pesudo, Stefano Piacentini, Noemi Pino, Guillaume Plante, Andrea Pietro Pocar, Stephen Pordes, Pascal Pralavorio, Elettra Preosti, Darren Price, George Prior, Manuel Pronesti, Sebastiana Puglia, Maria Cecilia Queiroga Bazetto, Fabrizio Raffaelli, Francesco Ragusa, Yorck Ramachers, Alejandro Ramirez, Sudikshan Ravinthiran, Marco Razeti, Andrew Lee Renshaw, Aras Repond, Marco Rescigno, Silvia Resconi, Fabrice Retiere, Ash Ritchie-Yates, Angelo Rivetti, Adam Roberts, Conner Roberts, Diego Rodriguez Rodas, Giovanni Rogers, Luciano Romero, Matteo Rossi, Dmitry Rudik, James Runge, Maria Adriana Sabia, Camilla Salerno, Paolo Salomone, Simone Sanfilippo, Daria Santone, Roberto Santorelli, Edivaldo M. Santos, Isobel Sargeant, Maria Luisa Sarsa, Claudio Savarese, Eugenio Scapparone, Fred Schuckman, Dmitriy Semenov, Carmen Seoane, Michela Sestu, Veronika Shalamova, Sanjay Sharma Poudel, Marino Simeone, Peter Skensved, Mikhail Skorokhvatov, Taisiia Smirnova, Ben Smith, Robert Smith, Franco Spadoni, Martin Spangenberg, Arianna Steri, Vincenzo Stornelli, Simone Stracka, Allan Sung, Clea Sunny, Yury Suvorov, Andrzej M Szelc, Oscar Taborda, Benjamin Tam, Roberto Tartaglia, Alan Taylor, Jonathan Taylor, Gemma Testera, Kevin Thieme, Angus Thompson, Sebastian Torres-Lara, Alessia Tricomi, Sara Tullio, Evgeniy Unzhakov, Marie Van Uffelen, Pedro Ventura, Guillermo Vera Diaz, Simon Viel, Alina Vishneva, Bruce Vogelaar, Joost Vossebeld, Bansari Vyas, Masayuki Wada, Marek Bohdan Walczak, Yi Wang, Shawn Westerdale, Laurie Williams, Marcin Marian Wojcik, Mariusz Wojcik, Changgen Yang, Jilong Yin, Azam Zabihi, Paul Zakhary, Andrea Zani, Haoxiang Zhan, Yongpeng Zhang, Antonino Zichichi, Grzegorz Zuzel