M. Garbini - The XENON Collaboration

M. Garbini
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M. Garbini
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The XENON Collaboration
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Physics - Instrumentation and Detectors (21)
 
High Energy Physics - Experiment (14)
 
Instrumentation and Methods for Astrophysics (13)
 
Cosmology and Nongalactic Astrophysics (12)
 
High Energy Physics - Phenomenology (9)
 
Astrophysics (4)
 
High Energy Astrophysical Phenomena (2)
 
Nuclear Experiment (1)
 
Astrophysics of Galaxies (1)

Publications Authored By M. Garbini

2017Apr

We present the first search for dark matter-induced delayed coincidence signals in a dual-phase xenon time projection chamber, using the 224.6\,live days of the XENON100 science run~II. This very distinct signature is predicted in the framework of magnetic inelastic dark matter which has been proposed to reconcile the modulation signal reported by the DAMA/LIBRA collaboration with the null results from other direct detection experiments. Read More

The Extreme Energy Events Project is a synchronous sparse array of 52 tracking detectors for studying High Energy Cosmic Rays (HECR) and Cosmic Rays-related phenomena. The observatory is also meant to address Long Distance Correlation (LDC) phenomena: the network is deployed over a broad area covering 10 degrees in latitude and 11 in longitude. An overview of a set of preliminary results is given, extending from the study of local muon flux dependance on solar activity to the investigation of the upward-going component of muon flux traversing the EEE stations; from the search for anisotropies at the sub-TeV scale to the hints for observations of km-scale Extensive Air Shower (EAS). Read More

2017Feb
Authors: XENON Collaboration, E. Aprile, J. Aalbers, F. Agostini, M. Alfonsi, F. D. Amaro, M. Anthony, F. Arneodo, P. Barrow, L. Baudis, B. Bauermeister, M. L. Benabderrahmane, T. Berger, P. A. Breur, A. Brown, E. Brown, S. Bruenner, G. Bruno, R. Budnik, L. Bütikofer, J. Calvén, J. M. R. Cardoso, M. Cervantes, D. Cichon, D. Coderre, A. P. Colijn, J. Conrad, J. P. Cussonneau, M. P. Decowski, P. de Perio, P. Di Gangi, A. Di Giovanni, S. Diglio, E. Duchovni, G. Eurin, J. Fei, A. D. Ferella, A. Fieguth, D. Franco, W. Fulgione, A. Gallo Rosso, M. Galloway, F. Gao, M. Garbini, C. Geis, L. W. Goetzke, L. Grandi, Z. Greene, C. Grignon, C. Hasterok, E. Hogenbirk, R. Itay, B. Kaminsky, G. Kessler, A. Kish, H. Landsman, R. F. Lang, D. Lellouch, L. Levinson, M. Le Calloch, Q. Lin, S. Lindemann, M. Lindner, J. A. M. Lopes A. Manfredini, I. Maris, T. Marrodán Undagoitia, J. Masbou, F. V. Massoli, D. Masson, D. Mayani, Y. Meng, M. Messina, K. Micheneau, B. Miguez, A. Molinario, M. Murra, J. Naganoma, K. Ni, U. Oberlack, S. E. A. Orrigo, P. Pakarha, B. Pelssers, R. Persiani, F. Piastra, J. Pienaar, M. -C. Piro, V. Pizzella, G. Plante, N. Priel, L. Rauch, S. Reichard, C. Reuter, A. Rizzo, S. Rosendahl, N. Rupp, R. Saldanha, J. M. F. dos Santos, G. Sartorelli, M. Scheibelhut, S. Schindler, J. Schreiner, M. Schumann, L. Scotto Lavina, M. Selvi, P. Shagin, E. Shockley, M. Silva, H. Simgen, M. v. Sivers, A. Stein, D. Thers, A. Tiseni, G. Trinchero, C. Tunnell, N. Upole, H. Wang, Y. Wei, C. Weinheimer, J. Wulf, J. Ye, Y. Zhang, I. Cristescu

We describe the purification of xenon from traces of the radioactive noble gas radon using a cryogenic distillation column. The distillation column is integrated into the gas purification loop of the XENON100 detector for online radon removal. This enabled us to significantly reduce the constant $^{222}$Rn background originating from radon emanation. Read More

2017Jan

We report on a search for electronic recoil event rate modulation signatures in the XENON100 data accumulated over a period of 4 years, from January 2010 to January 2014. A profile likelihood method, which incorporates the stability of the XENON100 detector and the known electronic recoil background model, is used to quantify the significance of periodicity in the time distribution of events. There is a weak modulation signature at a period of $431^{+16}_{-14}$ days in the low energy region of $(2. Read More

2016Dec
Authors: XENON Collaboration, E. Aprile, J. Aalbers, F. Agostini, M. Alfonsi, F. D. Amaro, M. Anthony, F. Arneodo, P. Barrow, L. Baudis, B. Bauermeister, M. L. Benabderrahmane, T. Berger, P. A. Breur, A. Brown, E. Brown, S. Bruenner, G. Bruno, R. Budnik, L. Bütikofer, J. Calvén, J. M. R. Cardoso, M. Cervantes, D. Cichon, D. Coderre, A. P. Colijn, J. Conrad, J. P. Cussonneau, M. P. Decowski, P. de Perio, P. Di Gangi, A. Di Giovanni, S. Diglio, E. Duchovni, G. Eurin, J. Fei, A. D. Ferella, A. Fieguth, D. Franco, W. Fulgione, A. Gallo Rosso, M. Galloway, F. Gao, M. Garbini, C. Geis, L. W. Goetzke, L. Grandi, Z. Greene, C. Grignon, C. Hasterok, E. Hogenbirk, R. Itay, B. Kaminsky, G. Kessler, A. Kish, H. Landsman, R. F. Lang, D. Lellouch, L. Levinson, M. Le Calloch, Q. Lin, S. Lindemann, M. Lindner, J. A. M. Lopes A. Manfredini, I. Maris, T. Marrodán Undagoitia, J. Masbou, F. V. Massoli, D. Masson, D. Mayani, Y. Meng, M. Messina, K. Micheneau, B. Miguez, A. Molinario, M. Murra, J. Naganoma, K. Ni, U. Oberlack, S. E. A. Orrigo, P. Pakarha, B. Pelssers, R. Persiani, F. Piastra, J. Pienaar, M. -C. Piro, V. Pizzella, G. Plante, N. Priel, L. Rauch, S. Reichard, C. Reuter, A. Rizzo, S. Rosendahl, N. Rupp, R. Saldanha, J. M. F. dos Santos, G. Sartorelli, M. Scheibelhut, S. Schindler, J. Schreiner, M. Schumann, L. Scotto Lavina, M. Selvi, P. Shagin, E. Shockley, M. Silva, H. Simgen, M. v. Sivers, A. Stein, D. Thers, A. Tiseni, G. Trinchero, C. Tunnell, N. Upole, H. Wang, Y. Wei, C. Weinheimer, J. Wulf, J. Ye, Y. Zhang, I. Cristescu

The XENON1T experiment aims for the direct detection of dark matter in a cryostat filled with 3.3 tons of liquid xenon. In order to achieve the desired sensitivity, the background induced by radioactive decays inside the detector has to be sufficiently low. Read More

2016Nov
Authors: The XENON Collaboration, E. Aprile, J. Aalbers, F. Agostini, M. Alfonsi, F. D. Amaro, M. Anthony, F. Arneodo, P. Barrow, L. Baudis, B. Bauermeister, M. L. Benabderrahmane, T. Berger, P. A. Breur, A. Brown, E. Brown, S. Bruenner, G. Bruno, R. Budnik, L. Butikofer, J. Calven, J. M. R. Cardoso, M. Cervantes, D. Cichon, D. Coderre, A. P. Colijn, J. Conrad, J. P. Cussonneau, M. P. Decowski, P. dePerio, P. DiGangi, A. DiGiovanni, S. Diglio, E. Duchovni, G. Eurin, J. Fei, A. D. Ferella, A. Fieguth, D. Franco, W. Fulgione, A. Gallo Rosso, M. Galloway, F. Gao, M. Garbini, C. Geis, L. W. Goetzke, L. Grandi, Z. Greene, C. Grignon, C. Hasterok, E. Hogenbirk, R. Itay, B. Kaminsky, G. Kessler, A. Kish, H. Landsman, R. F. Lang, D. Lellouch, L. Levinson, M. LeCalloch, Q. Lin, S. Lindemann, M. Lindner, J. A. M. Lopes, A. Manfredini, I. Maris, T. Marrodan Undagoitia, J. Masbou, F. V. Massoli, D. Masson, D. Mayani, Y. Meng, M. Messina, K. Micheneau, B. Miguez, A. Molinario, M. Murra, J. Naganoma, K. Ni, U. Oberlack, S. E. A. Orrigo, P. Pakarha, B. Pelssers, R. Persiani, F. Piastra, J. Pienaar, M. -C. Piro, G. P lante, N. Priel, L. Rauch, S. Reichard, C. Reuter, A. Rizzo, S. Rosendahl, N. Rupp, R. Saldanha, J. M. F. dosSantos, G. Sartorelli, M. Scheibelhut, S. Schindler, J. Schreiner, M. Schumann, L. Scotto Lavina, M. Selvi, P. Shagin, E. Shockley, M. Silva, H. Simgen, M. v. Sivers, A. Stein, D. Thers, A. Tiseni, G. Trinchero, C. Tunnell, N. Upole, H. Wang, Y. Wei, C. Weinheimer, J. Wulf, J. Ye, Y. Zhang

A Rn-220 source is deployed on the XENON100 dark matter detector in order to address the challenges in calibration of tonne-scale liquid noble element detectors. We show that the Pb-212 beta emission can be used for low-energy electronic recoil calibration in searches for dark matter. The isotope spreads throughout the entire active region of the detector, and its activity naturally decays below background level within a week after the source is closed. Read More

2016Sep

We report on WIMP search results of the XENON100 experiment, combining three runs summing up to 477 live days from January 2010 to January 2014. Data from the first two runs were already published. A blind analysis was applied to the last run recorded between April 2013 and January 2014 prior to combining the results. Read More

2016Sep

Two-neutrino double electron capture is a rare nuclear decay where two electrons are simultaneously captured from the atomic shell. For $^{124}$Xe this process has not yet been observed and its detection would provide a new reference for nuclear matrix element calculations. We have conducted a search for two-neutrino double electron capture from the K-shell of $^{124}$Xe using 7636 kg$\cdot$d of data from the XENON100 dark matter detector. Read More

2016Jun

DARk matter WImp search with liquid xenoN (DARWIN) will be an experiment for the direct detection of dark matter using a multi-ton liquid xenon time projection chamber at its core. Its primary goal will be to explore the experimentally accessible parameter space for Weakly Interacting Massive Particles (WIMPs) in a wide mass-range, until neutrino interactions with the target become an irreducible background. The prompt scintillation light and the charge signals induced by particle interactions in the xenon will be observed by VUV sensitive, ultra-low background photosensors. Read More

2016May

We perform a low-mass dark matter search using an exposure of 30\,kg$\times$yr with the XENON100 detector. By dropping the requirement of a scintillation signal and using only the ionization signal to determine the interaction energy, we lowered the energy threshold for detection to 0.7\,keV for nuclear recoils. Read More

2015Dec

The XENON1T experiment is currently in the commissioning phase at the Laboratori Nazionali del Gran Sasso, Italy. In this article we study the experiment's expected sensitivity to the spin-independent WIMP-nucleon interaction cross section, based on Monte Carlo predictions of the electronic and nuclear recoil backgrounds. The total electronic recoil background in $1$ tonne fiducial volume and ($1$, $12$) keV electronic recoil equivalent energy region, before applying any selection to discriminate between electronic and nuclear recoils, is $(1. Read More

Laboratory experiments searching for galactic dark matter particles scattering off nuclei have so far not been able to establish a discovery. We use data from the XENON100 experiment to search for dark matter interacting with electrons. With no evidence for a signal above the low background of our experiment, we exclude a variety of representative dark matter models that would induce electronic recoils. Read More

2015Jul

We have searched for periodic variations of the electronic recoil event rate in the (2-6) keV energy range recorded between February 2011 and March 2012 with the XENON100 detector, adding up to 224.6 live days in total. Following a detailed study to establish the stability of the detector and its background contributions during this run, we performed an un-binned profile likelihood analysis to identify any periodicity up to 500 days. Read More

2015Mar
Affiliations: 1The XENON Collaboration, 2The XENON Collaboration, 3The XENON Collaboration, 4The XENON Collaboration, 5The XENON Collaboration, 6The XENON Collaboration, 7The XENON Collaboration, 8The XENON Collaboration, 9The XENON Collaboration, 10The XENON Collaboration, 11The XENON Collaboration, 12The XENON Collaboration, 13The XENON Collaboration, 14The XENON Collaboration, 15The XENON Collaboration, 16The XENON Collaboration, 17The XENON Collaboration, 18The XENON Collaboration, 19The XENON Collaboration, 20The XENON Collaboration, 21The XENON Collaboration, 22The XENON Collaboration, 23The XENON Collaboration, 24The XENON Collaboration, 25The XENON Collaboration, 26The XENON Collaboration, 27The XENON Collaboration, 28The XENON Collaboration, 29The XENON Collaboration, 30The XENON Collaboration, 31The XENON Collaboration, 32The XENON Collaboration, 33The XENON Collaboration, 34The XENON Collaboration, 35The XENON Collaboration, 36The XENON Collaboration, 37The XENON Collaboration, 38The XENON Collaboration, 39The XENON Collaboration, 40The XENON Collaboration, 41The XENON Collaboration, 42The XENON Collaboration, 43The XENON Collaboration, 44The XENON Collaboration, 45The XENON Collaboration, 46The XENON Collaboration, 47The XENON Collaboration, 48The XENON Collaboration, 49The XENON Collaboration, 50The XENON Collaboration, 51The XENON Collaboration, 52The XENON Collaboration, 53The XENON Collaboration, 54The XENON Collaboration, 55The XENON Collaboration, 56The XENON Collaboration, 57The XENON Collaboration, 58The XENON Collaboration, 59The XENON Collaboration, 60The XENON Collaboration, 61The XENON Collaboration, 62The XENON Collaboration, 63The XENON Collaboration, 64The XENON Collaboration, 65The XENON Collaboration, 66The XENON Collaboration, 67The XENON Collaboration, 68The XENON Collaboration, 69The XENON Collaboration, 70The XENON Collaboration, 71The XENON Collaboration, 72The XENON Collaboration, 73The XENON Collaboration, 74The XENON Collaboration, 75The XENON Collaboration, 76The XENON Collaboration, 77The XENON Collaboration, 78The XENON Collaboration, 79The XENON Collaboration, 80The XENON Collaboration, 81The XENON Collaboration, 82The XENON Collaboration, 83The XENON Collaboration, 84The XENON Collaboration, 85The XENON Collaboration, 86The XENON Collaboration, 87The XENON Collaboration, 88The XENON Collaboration, 89The XENON Collaboration, 90The XENON Collaboration, 91The XENON Collaboration, 92The XENON Collaboration, 93The XENON Collaboration, 94The XENON Collaboration, 95The XENON Collaboration, 96The XENON Collaboration, 97The XENON Collaboration

The low-background, VUV-sensitive 3-inch diameter photomultiplier tube R11410 has been developed by Hamamatsu for dark matter direct detection experiments using liquid xenon as the target material. We present the results from the joint effort between the XENON collaboration and the Hamamatsu company to produce a highly radio-pure photosensor (version R11410-21) for the XENON1T dark matter experiment. After introducing the photosensor and its components, we show the methods and results of the radioactive contamination measurements of the individual materials employed in the photomultiplier production. Read More

The Large Volume Detector (LVD) has been continuously taking data since 1992 at the INFN Gran Sasso National Laboratory. LVD is sensitive to neutrino bursts from gravitational stellar collapses with full detection probability over the Galaxy. We have searched for neutrino bursts in LVD data taken in 7335 days of operation. Read More

2014Jun
Affiliations: 1The XENON Collaboration, 2The XENON Collaboration, 3The XENON Collaboration, 4The XENON Collaboration, 5The XENON Collaboration, 6The XENON Collaboration, 7The XENON Collaboration, 8The XENON Collaboration, 9The XENON Collaboration, 10The XENON Collaboration, 11The XENON Collaboration, 12The XENON Collaboration, 13The XENON Collaboration, 14The XENON Collaboration, 15The XENON Collaboration, 16The XENON Collaboration, 17The XENON Collaboration, 18The XENON Collaboration, 19The XENON Collaboration, 20The XENON Collaboration, 21The XENON Collaboration, 22The XENON Collaboration, 23The XENON Collaboration, 24The XENON Collaboration, 25The XENON Collaboration, 26The XENON Collaboration, 27The XENON Collaboration, 28The XENON Collaboration, 29The XENON Collaboration, 30The XENON Collaboration, 31The XENON Collaboration, 32The XENON Collaboration, 33The XENON Collaboration, 34The XENON Collaboration, 35The XENON Collaboration, 36The XENON Collaboration, 37The XENON Collaboration, 38The XENON Collaboration, 39The XENON Collaboration, 40The XENON Collaboration, 41The XENON Collaboration, 42The XENON Collaboration, 43The XENON Collaboration, 44The XENON Collaboration, 45The XENON Collaboration, 46The XENON Collaboration, 47The XENON Collaboration, 48The XENON Collaboration, 49The XENON Collaboration, 50The XENON Collaboration, 51The XENON Collaboration, 52The XENON Collaboration, 53The XENON Collaboration, 54The XENON Collaboration, 55The XENON Collaboration, 56The XENON Collaboration, 57The XENON Collaboration, 58The XENON Collaboration, 59The XENON Collaboration, 60The XENON Collaboration, 61The XENON Collaboration, 62The XENON Collaboration, 63The XENON Collaboration, 64The XENON Collaboration, 65The XENON Collaboration, 66The XENON Collaboration, 67The XENON Collaboration, 68The XENON Collaboration, 69The XENON Collaboration, 70The XENON Collaboration, 71The XENON Collaboration, 72The XENON Collaboration, 73The XENON Collaboration, 74The XENON Collaboration, 75The XENON Collaboration, 76The XENON Collaboration, 77The XENON Collaboration, 78The XENON Collaboration, 79The XENON Collaboration, 80The XENON Collaboration, 81The XENON Collaboration, 82The XENON Collaboration, 83The XENON Collaboration, 84The XENON Collaboration, 85The XENON Collaboration, 86The XENON Collaboration, 87The XENON Collaboration, 88The XENON Collaboration, 89The XENON Collaboration, 90The XENON Collaboration, 91The XENON Collaboration

XENON is a dark matter direct detection project, consisting of a time projection chamber (TPC) filled with liquid xenon as detection medium. The construction of the next generation detector, XENON1T, is presently taking place at the Laboratori Nazionali del Gran Sasso (LNGS) in Italy. It aims at a sensitivity to spin-independent cross sections of $2 \cdot 10^{-47} ~ \mathrm{cm}^{\mathrm{2}}$ for WIMP masses around 50 GeV/c$^{2}$, which requires a background reduction by two orders of magnitude compared to XENON100, the current generation detector. Read More

We present the first results of searches for axions and axion-like-particles with the XENON100 experiment. The axion-electron coupling constant, $g_{Ae}$, has been probed by exploiting the axio-electric effect in liquid xenon. A profile likelihood analysis of 224. Read More

2013Nov
Affiliations: 1LVD Collaboration, 2LVD Collaboration, 3LVD Collaboration, 4LVD Collaboration, 5LVD Collaboration, 6LVD Collaboration, 7LVD Collaboration, 8LVD Collaboration, 9LVD Collaboration, 10LVD Collaboration, 11LVD Collaboration, 12LVD Collaboration, 13LVD Collaboration, 14LVD Collaboration, 15LVD Collaboration, 16LVD Collaboration, 17LVD Collaboration, 18LVD Collaboration, 19LVD Collaboration, 20LVD Collaboration, 21LVD Collaboration, 22LVD Collaboration, 23LVD Collaboration, 24LVD Collaboration, 25LVD Collaboration, 26LVD Collaboration, 27LVD Collaboration, 28LVD Collaboration, 29LVD Collaboration, 30LVD Collaboration, 31LVD Collaboration

The charge ratio ${k \equiv \mu^+/\mu^-}$ for atmospheric muons has been measured using Large Volume Detector (LVD) in the INFN Gran Sasso National Laboratory, Italy (minimal depth is 3000 m w.e.). Read More

The XENON100 dark matter experiment uses liquid xenon in a time projection chamber (TPC) to measure xenon nuclear recoils resulting from the scattering of dark matter Weakly Interacting Massive Particles (WIMPs). In this paper, we report the observation of single-electron charge signals which are not related to WIMP interactions. These signals, which show the excellent sensitivity of the detector to small charge signals, are explained as being due to the photoionization of impurities in the liquid xenon and of the metal components inside the TPC. Read More

2013Jun
Affiliations: 1XENON Collaboration, 2XENON Collaboration, 3XENON Collaboration, 4XENON Collaboration, 5XENON Collaboration, 6XENON Collaboration, 7XENON Collaboration, 8XENON Collaboration, 9XENON Collaboration, 10XENON Collaboration, 11XENON Collaboration, 12XENON Collaboration, 13XENON Collaboration, 14XENON Collaboration, 15XENON Collaboration, 16XENON Collaboration, 17XENON Collaboration, 18XENON Collaboration, 19XENON Collaboration, 20XENON Collaboration, 21XENON Collaboration, 22XENON Collaboration, 23XENON Collaboration, 24XENON Collaboration, 25XENON Collaboration, 26XENON Collaboration, 27XENON Collaboration, 28XENON Collaboration, 29XENON Collaboration, 30XENON Collaboration, 31XENON Collaboration, 32XENON Collaboration, 33XENON Collaboration, 34XENON Collaboration, 35XENON Collaboration, 36XENON Collaboration, 37XENON Collaboration, 38XENON Collaboration, 39XENON Collaboration, 40XENON Collaboration, 41XENON Collaboration, 42XENON Collaboration, 43XENON Collaboration, 44XENON Collaboration, 45XENON Collaboration, 46XENON Collaboration, 47XENON Collaboration, 48XENON Collaboration, 49XENON Collaboration, 50XENON Collaboration, 51XENON Collaboration, 52XENON Collaboration, 53XENON Collaboration, 54XENON Collaboration, 55XENON Collaboration, 56XENON Collaboration, 57XENON Collaboration, 58XENON Collaboration, 59XENON Collaboration, 60XENON Collaboration, 61XENON Collaboration, 62XENON Collaboration, 63XENON Collaboration, 64XENON Collaboration, 65XENON Collaboration, 66XENON Collaboration, 67XENON Collaboration, 68XENON Collaboration, 69XENON Collaboration, 70XENON Collaboration, 71XENON Collaboration, 72XENON Collaboration, 73XENON Collaboration, 74XENON Collaboration, 75XENON Collaboration, 76XENON Collaboration, 77XENON Collaboration

The XENON100 experiment, installed underground at the Laboratori Nazionali del Gran Sasso (LNGS), aims to directly detect dark matter in the form of Weakly Interacting Massive Particles (WIMPs) via their elastic scattering off xenon nuclei. This paper presents a study on the nuclear recoil background of the experiment, taking into account neutron backgrounds from ($\alpha$,n) and spontaneous fission reactions due to natural radioactivity in the detector and shield materials, as well as muon-induced neutrons. Based on Monte Carlo simulations and using measured radioactive contaminations of all detector components, we predict the nuclear recoil backgrounds for the WIMP search results published by the XENON100 experiment in 2011 and 2012, 0. Read More

Results from the nuclear recoil calibration of the XENON100 dark matter detector installed underground at the Laboratori Nazionali del Gran Sasso (LNGS), Italy are presented. Data from measurements with an external 241AmBe neutron source are compared with a detailed Monte Carlo simulation which is used to extract the energy dependent charge-yield Qy and relative scintillation efficiency Leff. A very good level of absolute spectral matching is achieved in both observable signal channels - scintillation S1 and ionization S2 - along with agreement in the 2-dimensional particle discrimination space. Read More

We present new experimental constraints on the elastic, spin-dependent WIMP-nucleon cross section using recent data from the XENON100 experiment, operated in the Laboratori Nazionali del Gran Sasso in Italy. An analysis of 224.6 live days x 34 kg of exposure acquired during 2011 and 2012 revealed no excess signal due to axial-vector WIMP interactions with 129-Xe and 131-Xe nuclei. Read More

The XENON100 experiment, in operation at the Laboratori Nazionali del Gran Sasso (LNGS) in Italy, was designed to search for evidence of dark matter interactions inside a volume of liquid xenon using a dual-phase time projection chamber. This paper describes the Slow Control System (SCS) of the experiment with emphasis on the distributed architecture as well as on its modular and expandable nature. The system software was designed according to the rules of Object-Oriented Programming and coded in Java, thus promoting code reusability and maximum flexibility during commissioning of the experiment. Read More

In a recent manuscript (arXiv:1208.5046) Peter Sorensen claims that XENON100's upper limits on spin-independent WIMP-nucleon cross sections for WIMP masses below 10 GeV "may be understated by one order of magnitude or more". Having performed a similar, though more detailed analysis prior to the submission of our new result (arXiv:1207. Read More

2012Aug
Affiliations: 1The LVD Collaboration, 2The LVD Collaboration, 3The LVD Collaboration, 4The LVD Collaboration, 5The LVD Collaboration, 6The LVD Collaboration, 7The LVD Collaboration, 8The LVD Collaboration, 9The LVD Collaboration, 10The LVD Collaboration, 11The LVD Collaboration, 12The LVD Collaboration, 13The LVD Collaboration, 14The LVD Collaboration, 15The LVD Collaboration, 16The LVD Collaboration, 17The LVD Collaboration, 18The LVD Collaboration, 19The LVD Collaboration, 20The LVD Collaboration, 21The LVD Collaboration, 22The LVD Collaboration, 23The LVD Collaboration, 24The LVD Collaboration, 25The LVD Collaboration, 26The LVD Collaboration, 27The LVD Collaboration, 28The LVD Collaboration, 29The LVD Collaboration, 30The LVD Collaboration

We report the measurement of the time-of-flight of ~17 GeV muon neutrinos on the CNGS baseline (732 km) with the Large Volume Detector (LVD) at the Gran Sasso Laboratory. The CERN-SPS accelerator has been operated from May 10th to May 24th 2012, with a tightly bunched-beam structure to allow the velocity of neutrinos to be accurately measured on an event-by-event basis. LVD has detected 48 neutrino events, associated to the beam, with a high absolute time accuracy. Read More

We report on a search for particle dark matter with the XENON100 experiment, operated at the Laboratori Nazionali del Gran Sasso (LNGS) for 13 months during 2011 and 2012. XENON100 features an ultra-low electromagnetic background of (5.3 \pm 0. Read More

The XENON100 experiment, situated in the Laboratori Nazionali del Gran Sasso, aims at the direct detection of dark matter in the form of weakly interacting massive particles (WIMPs), based on their interactions with xenon nuclei in an ultra low background dual-phase time projection chamber. This paper describes the general methods developed for the analysis of the XENON100 data. These methods have been used in the 100. Read More

2012Jun
Affiliations: 1the LVD Collaboration, 2the LVD Collaboration, 3the LVD Collaboration, 4the LVD Collaboration, 5the LVD Collaboration, 6the LVD Collaboration, 7the LVD Collaboration, 8the LVD Collaboration, 9the LVD Collaboration, 10the LVD Collaboration, 11the LVD Collaboration, 12the LVD Collaboration, 13the LVD Collaboration, 14the LVD Collaboration, 15the LVD Collaboration, 16the LVD Collaboration, 17the LVD Collaboration, 18the LVD Collaboration, 19the LVD Collaboration, 20the LVD Collaboration, 21the OPERA Collaboration, 22the OPERA Collaboration, 23the OPERA Collaboration, 24the OPERA Collaboration, 25the OPERA Collaboration, 26the OPERA Collaboration, 27the OPERA Collaboration, 28the OPERA Collaboration, 29the OPERA Collaboration, 30the OPERA Collaboration, 31the OPERA Collaboration, 32the OPERA Collaboration, 33the OPERA Collaboration, 34the OPERA Collaboration, 35the OPERA Collaboration, 36the OPERA Collaboration, 37the OPERA Collaboration, 38the OPERA Collaboration, 39the OPERA Collaboration, 40the OPERA Collaboration, 41the OPERA Collaboration, 42the OPERA Collaboration, 43the OPERA Collaboration, 44the OPERA Collaboration, 45the OPERA Collaboration, 46the OPERA Collaboration, 47the OPERA Collaboration, 48the OPERA Collaboration, 49the OPERA Collaboration, 50the OPERA Collaboration, 51the OPERA Collaboration, 52the OPERA Collaboration, 53the OPERA Collaboration, 54the OPERA Collaboration, 55the OPERA Collaboration, 56the OPERA Collaboration, 57the OPERA Collaboration, 58the OPERA Collaboration, 59the OPERA Collaboration, 60the OPERA Collaboration, 61the OPERA Collaboration, 62the OPERA Collaboration, 63the OPERA Collaboration, 64the OPERA Collaboration, 65the OPERA Collaboration, 66the OPERA Collaboration, 67the OPERA Collaboration, 68the OPERA Collaboration, 69the OPERA Collaboration, 70the OPERA Collaboration, 71the OPERA Collaboration, 72the OPERA Collaboration, 73the OPERA Collaboration, 74the OPERA Collaboration, 75the OPERA Collaboration, 76the OPERA Collaboration, 77the OPERA Collaboration, 78the OPERA Collaboration, 79the OPERA Collaboration, 80the OPERA Collaboration, 81the OPERA Collaboration, 82the OPERA Collaboration, 83the OPERA Collaboration, 84the OPERA Collaboration, 85the OPERA Collaboration, 86the OPERA Collaboration, 87the OPERA Collaboration, 88the OPERA Collaboration, 89the OPERA Collaboration, 90the OPERA Collaboration, 91the OPERA Collaboration

The purpose of this work is to report the measurement of a time-shift in the OPERA set-up in a totally independent way from Time Of Flight (TOF) measurements of CNGS neutrino events. The LVD and OPERA experiments are both installed in the same laboratory: LNGS. The relative position of the two detectors, separated by an average distance of ~ 160 m, allows the use of very high energy horizontal muons to cross-calibrate the timing systems of the two detectors, using a TOF technique which is totally independent from TOF of CNGS neutrino events. Read More

The CERN Neutrino to Gran Sasso (CNGS) project aims to produce a high energy, wide band $\nu_{\mu}$ beam at CERN and send it toward the INFN Gran Sasso National Laboratory (LNGS), 732 km away. Its main goal is the observation of the $\nu_{\tau}$ appearance, through neutrino flavour oscillation. The beam started its operation in August 2006 for about 12 days: a total amount of $7. Read More

The LVD detector, located in the INFN Gran Sasso National Laboratory (Italy), studies supernova neutrinos through the interactions with protons and carbon nuclei in the liquid scintillator and interactions with the iron nuclei of the support structure. We investigate the effect of neutrino oscillations in the signal expected in the LVD detector. The MSW effect has been studied in detail for neutrinos travelling through the collapsing star and the Earth. Read More

The new experiment ``Extreme Energy Events'' (EEE) to detect extensive air showers through muon detection is starting in Italy. The use of particle detectors based on Multigap Resistive Plate Chambers (MRPC) will allow to determine with a very high accuracy the direction of the axis of cosmic ray showers initiated by primaries of ultra-high energy, together with a high temporal resolution. The installation of many of such 'telescopes' in numerous High Schools scattered all over the Italian territory will also allow to investigate coincidences between multiple primaries producing distant showers. Read More

We report on a search for low-energy neutrino (antineutrino) bursts in correlation with the 8 time coincident events observed by the gravitational waves detectors EXPLORER and NAUTILUS (GWD) during the year 2001. The search, conducted with the LVD detector (INFN Gran Sasso National Laboratory, Italy), has considered several neutrino reactions, corresponding to different neutrino species, and a wide range of time intervals around the (GWD) observed events. No evidence for statistically significant correlated signals in LVD has been found. Read More

We present an update of our previous study (astro-ph/0112312) on how $\nu$ oscillations affect the signal from a supernova core collapse observed in the LVD detector at LNGS. In this paper we use a recent, more precise determination of the cross section (astro-ph/0302055) to calculate the expected number of inverse beta decay events, we introduce in the simulation also the $\nu$-{\rm Fe} interactions, we include the Earth matter effects and, finally, we study also the inverted mass hierarchy case. Read More

The importance of an adequate CNGS beam monitor at the Gran Sasso Laboratory has been stressed in many papers. Since the number of internal $\nu_\mu$ CC and NC interactions in the various detectors will not allow to collect statistics rapidly, one should also be able to detect the $\nu_\mu$ CC interactions in the upstream rock. In this study we have investigated the performances of the LVD detector as a monitor for the CNGS neutrino beam. Read More