Sample records for idgeport-prunt ytown gran

  1. Laboratori Nazionali del Gran Sasso ENVIRONMENTAL POLICY

    E-Print Network [OSTI]

    Laboratori Nazionali del Gran Sasso ENVIRONMENTAL POLICY The Gran Sasso National Laboratory (LNGS experimental halls, near a highway tunnel in close proximity with hydric basin), safety and environmental improvement of the environmental performances, a necessary condition for a "sustainable development". Specific

  2. The Gran Sasso Laboratory and Neutrinos

    SciTech Connect (OSTI)

    Bettini, Alessandro [University of Padua-G. Galilei Physics Department- and INFN. Via Marzolo 8 35131 Padova (Italy); Laboratorio Subterraneo de Canfranc. Canfranc, Huesca (Spain)

    2008-01-24T23:59:59.000Z

    After a brief survey of the experimental programme of the INFN Gran Sasso National Laboratory, I summarize the status of neutrino physics. I then focus on two frontier challenges. 1. The possible solution of the mass spectrum hierarchy problem with the observation of neutrinos from a supernova explosion; 2. The establishment of the nature of neutrinos, whether they are Dirac or Majorana particles, with neutrino-less double-beta decay.

  3. Gran Valle Qu mica | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluating AGeothermal/Exploration <GlacialGolden SpreadGomtiofGraham CountyGran

  4. CERN Neutrinos to Gran Sasso (CNGS) First Beam

    E-Print Network [OSTI]

    Gschwendtner, E

    2006-01-01T23:59:59.000Z

    The CNGS, CERN Neutrinos to Gran Sasso project, aims at directly detecting muon-neutrino to tau-neutrino oscillations. An intense muon-neutrino beam (10 to the 17 muon neutrinos)is generated at CERN per day and directed towards the Gran Sasso National Laboratory, LNGS, in Italy, 732 km away from CERN. In LNGS large and complex detectors will allow to detect, in particular, the rare tau-neutrinos created by â??oscillation' from muon-neutrinos on their way between CERN and LNGS. On average around three tau-neutrino events are predicted per year in each of the ~2000 ton detectors. The construction of the CNGS beam facility started in September 2000, and the first neutrino beam has been produced in July 2006. In the presently approved physics programme, it is foreseen to run the facility for five years.

  5. Mor-Gran-Sou Electric Coop Inc | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluatingGroup |JilinLu anMicrogreenMoon Lake Electric Assn Inc (Utah) JumpMor-Gran-Sou

  6. STRUCTURE AND EMPLACEMENT MECHANISMS OF THE ROQUE NUBLO DEBRIS AVALANCHE, GRAN CANARIA (CANARY ISLANDS)

    E-Print Network [OSTI]

    Belousov, Alexander

    STRUCTURE AND EMPLACEMENT MECHANISMS OF THE ROQUE NUBLO DEBRIS AVALANCHE, GRAN CANARIA (CANARY ISLANDS) Alexander Belousov (1,2), Marina Belousova (1) and Hans-Ulrich Schmincke(2) (1) - Institute

  7. Results on Dark Matter and beta beta decay modes by DAMA at Gran Sasso

    E-Print Network [OSTI]

    R. Bernabei

    2007-05-21T23:59:59.000Z

    DAMA is an observatory for rare processes and it is operative deep underground at the Gran Sasso National Laboratory of the I.N.F.N. (LNGS). Here some arguments will be presented on the investigation on dark matter particles by annual modulation signature and on some of the realized double beta decay searches.

  8. Downstream variations in the width of bedrock channels David R. Montgomery and Karen B. Gran

    E-Print Network [OSTI]

    Montgomery, David R.

    Downstream variations in the width of bedrock channels David R. Montgomery and Karen B. Gran the Mokelumne River show that bedrock channel width decreases substantially downstream at the contact between show systematic channel widening after flood flows and debris flow impacts. We conclude that downstream

  9. Operation and performance of the ICARUS-T600 cryogenic plant at Gran Sasso underground Laboratory

    E-Print Network [OSTI]

    M. Antonello; P. Aprili; B. Baibussinov; F. Boffelli; A. Bubak; E. Calligarich; N. Canci; S. Centro; A. Cesana; K. Cie?lik; D. B. Cline; A. G. Cocco; A. Dabrowski; A. Dermenev; J. M. Disdier; A. Falcone; C. Farnese; A. Fava; A. Ferrari; D. Gibin; S. Gninenko; A. Guglielmi; M. Haranczyk; J. Holeczek; A. Ivashkin; M. Kirsanov; J. Kisiel; I. Kochanek; J. Lagoda; S. Mania; A. Menegolli; G. Meng; C. Montanari; S. Otwinowski; P. Picchi; F. Pietropaolo; P. Plonski; A. Rappoldi; G. L. Raselli; M. Rossella; C. Rubbia; P. R. Sala; A. Scaramelli; E. Segreto; F. Sergiampietri; D. Stefan; R. Sulej; M. Szarska; M. Terrani; M. Torti; F. Varanini; S. Ventura; C. Vignoli; H. G. Wang; X. Yang; A. Zalewska; A. Zani; K. Zaremba

    2015-04-22T23:59:59.000Z

    ICARUS T600 liquid argon time projection chamber is the first large mass electronic detector of a new generation able to combine the imaging capabilities of the old bubble chambers with the excellent calorimetric energy measurement. After the three months demonstration run on surface in Pavia during 2001, the T600 cryogenic plant was significantly revised, in terms of reliability and safety, in view of its long-term operation in an underground environment. The T600 detector was activated in Hall B of the INFN Gran Sasso Laboratory during Spring 2010, where it was operated without interruption for about three years, taking data exposed to the CERN to Gran Sasso long baseline neutrino beam and cosmic rays. In this paper the T600 cryogenic plant is described in detail together with the commissioning procedures that lead to the successful operation of the detector shortly after the end of the filling with liquid Argon. Overall plant performance and stability during the long-term underground operation are discussed. Finally, the decommissioning procedures, carried out about six months after the end of the CNGS neutrino beam operation, are reported.

  10. Measurement of the energy spectrum of underground muons at Gran Sasso with a transition radiation detector

    E-Print Network [OSTI]

    The MACRO Collaboration; M. Ambrosio et al

    1998-07-09T23:59:59.000Z

    We have measured directly the residual energy of cosmic ray muons crossing the MACRO detector at the Gran Sasso Laboratory. For this measurement we have used a transition radiation detector consisting of three identical modules, each of about 12 m^2 area, operating in the energy region from 100 GeV to 1 TeV. The results presented here were obtained with the first module collecting data for more than two years. The average single muon energy is found to be 320 +/- 4 (stat.) +/- 11 (syst.) GeV in the rock depth range 3000-6500 hg/cm^2. The results are in agreement with calculations of the energy loss of muons in the rock above the detector.

  11. The XENON10 WIMP Direct Detection Search at the Gran Sasso Underground Laboratory

    SciTech Connect (OSTI)

    Manalaysay, Aaron [Department of Physics, University of Florida, Gainesville, FL 32611 (United States) and Physics Institute, University of Zuerich, Zuerich, CH-8057 (Switzerland)

    2009-09-08T23:59:59.000Z

    The direct detection search for WIMPs with the XENON10 detector has produced among the best results in the field to date. The detector is a dual-phase liquid xenon time projection chamber, capable of 3-D position reconstruction and nuclear recoil discrimination. We summarize 58.6 live-days of WIMP search data collected at the Gran Sasso Underground Laboratory (LNGS) in Italy. With this data we have been able to set stringent upper limits on the spin-dependent and spin-independent WIMP scattering cross sections, in addition to a lower limit of 2.2 TeV/c{sup 2} on the mass of the heavy Majorana neutrino.

  12. UNA ESTTICA DE DOBLE FILO El ltimo gran xito en productos pop es Lady Gaga. La simple observacin

    E-Print Network [OSTI]

    Geffner, Hector

    UNA ESTÉTICA DE DOBLE FILO El último gran éxito en productos pop es Lady Gaga. La simple que les haya parecido más conveniente, sino de Lady Gaga como producto, personaje y obra de arte. No debemos caer en el error de confundir Lady Gaga con Stefani Germanotta, la joven rockera que le da vida y

  13. Search for double beta decay with HPGe detectors at the Gran Sasso underground laboratory

    E-Print Network [OSTI]

    Oleg Chkvorets

    2008-12-05T23:59:59.000Z

    Neutrinoless double-beta decay is practically the only way to establish the Majorana nature of the neutrino mass and its decay rate provides a probe of an effective neutrino mass. Double beta experiments are long-running underground experiments with specific challenges concerning the background reduction and the long term stability. These problems are addressed in this work for the Heidelberg-Moscow (HdM), GENIUS Test Facility (TF) and GERDA experiments. The HdM experiment collected data with enriched 76Ge high purity (HPGe) detectors from 1990 to 2003. An improved analysis of HdM data is presented, exploiting new calibration and spectral shape measurements with the HdM detectors. GENIUS-TF was a test-facility that verified the feasibility of using bare germanium detectors in liquid nitrogen. The first year results of this experiment are discussed. The GERDA experiment has been designed to further increase the sensitivity by operating bare germanium detectors in a high purity cryogenic liquid, which simultaneously serves as a shielding against background and as a cooling media. In the preparatory stage of GERDA, an external background gamma flux measurement was done at the experimental site in the Hall A of the Gran Sasso laboratory. The characterization of the enriched detectors from the HdM and IGEX experiments was performed in the underground detector laboratory for the GERDA collaboration. Long term stability measurements of a bare HPGe detector in liquid argon were carried out. Based on these measurements, the first lower limit on the half-life of neutrinoless double electron capture of 36Ar was established to be 1.85*10^18 years at 68% C.L.

  14. First Results from the DarkSide-50 Dark Matter Experiment at Laboratori Nazionali del Gran Sasso

    E-Print Network [OSTI]

    Agnes, P; Alton, A; Arisaka, K; Back, H O; Baldin, B; Biery, K; Bonfini, G; Bossa, M; Brigatti, A; Brodsky, J; Budano, F; Cadonati, L; Calaprice, F; Canci, N; Candela, A; Cao, H; Cariello, M; Cavalcante, P; Chavarria, A; Chepurnov, A; Cocco, A G; Crippa, L; D'Angelo, D; D'Incecco, M; Davini, S; De Deo, M; Derbin, A; Devoto, A; Di Eusanio, F; Di Pietro, G; Edkins, E; Empl, A; Fan, A; Fiorillo, G; Fomenko, K; Forster, G; Franco, D; Gabriele, F; Galbiati, C; Goretti, A; Grandi, L; Gromov, M; Guan, M Y; Guardincerri, Y; Hackett, B; Herner, K; Hungerford, E V; Ianni, Al; Ianni, An; Jollet, C; Keeter, K; Kendziora, C; Kidner, S; Kobychev, V; Koh, G; Korablev, D; Korga, G; Kurlej, A; Li, P X; Loer, B; Lombardi, P; Love, C; Ludhova, L; Luitz, S; Ma, Y Q; Machulin, I; Mandarano, A; Mari, S; Maricic, J; Marini, L; Martoff, C J; Meregaglia, A; Meroni, E; Meyers, P D; Milincic, R; Montanari, D; Montuschi, M; Monzani, M E; Mosteiro, P; Mount, B; Muratova, V; Musico, P; Nelson, A; Odrowski, S; Okounkova, M; Orsini, M; Ortica, F; Pagani, L; Pallavicini, M; Pantic, E; Papp, L; Parmeggiano, S; Parsells, R; Pelczar, K; Pelliccia, N; Perasso, S; Pocar, A; Pordes, S; Pugachev, D; Qian, H; Randle, K; Ranucci, G; Razeto, A; Reinhold, B; Renshaw, A; Romani, A; Rossi, B; Rossi, N; Rountree, S D; Sablone, D; Saggese, P; Saldanha, R; Sands, W; Sangiorgio, S; Segreto, E; Semenov, D; Shields, E; Skorokhvatov, M; Smirnov, O; Sotnikov, A; Stanford, C; Suvorov, Y; Tartaglia, R; Tatarowicz, J; Testera, G; Tonazzo, A; Unzhakov, E; Vogelaar, R B; Wada, M; Walker, S; Wang, H; Wang, Y; Watson, A; Westerdale, S; Wojcik, M; Wright, A; Xiang, X; Xu, J; Yang, C G; Yoo, J; Zavatarelli, S; Zec, A; Zhu, C; Zuzel, G

    2015-01-01T23:59:59.000Z

    We report the first results of DarkSide-50, a direct search for dark matter operating in the underground Laboratori Nazionali del Gran Sasso (LNGS) and searching for the rare nuclear recoils possibly induced by weakly interacting massive particles (WIMPs). The dark matter detector is a Liquid Argon Time Projection Chamber with a (46.4+-0.7) kg active mass, operated inside a 30 t organic liquid scintillator neutron veto, which is in turn installed at the center of a 1 kt water Cherenkov veto for the residual flux of cosmic rays. We report here the null results of a dark matter search for a (1422+-67) kg d exposure with an atmospheric argon fill. This is the most sensitive dark matter search performed with an argon target, corresponding to a 90% CL upper limit on the WIMP-nucleon spin-independent cross section of 6.1x10^-44 cm^2 for a WIMP mass of 100 GeV/c^2.

  15. First Results from the DarkSide-50 Dark Matter Experiment at Laboratori Nazionali del Gran Sasso

    E-Print Network [OSTI]

    P. Agnes; T. Alexander; A. Alton; K. Arisaka; H. O. Back; B. Baldin; K. Biery; G. Bonfini; M. Bossa; A. Brigatti; J. Brodsky; F. Budano; L. Cadonati; F. Calaprice; N. Canci; A. Candela; H. Cao; M. Cariello; P. Cavalcante; A. Chavarria; A. Chepurnov; A. G. Cocco; L. Crippa; D. D'Angelo; M. D'Incecco; S. Davini; M. De Deo; A. Derbin; A. Devoto; F. Di Eusanio; G. Di Pietro; E. Edkins; A. Empl; A. Fan; G. Fiorillo; K. Fomenko; G. Forster; D. Franco; F. Gabriele; C. Galbiati; A. Goretti; L. Grandi; M. Gromov; M. Y. Guan; Y. Guardincerri; B. Hackett; K. Herner; E. V. Hungerford; Al. Ianni; An. Ianni; C. Jollet; K. Keeter; C. Kendziora; S. Kidner; V. Kobychev; G. Koh; D. Korablev; G. Korga; A. Kurlej; P. X. Li; B. Loer; P. Lombardi; C. Love; L. Ludhova; S. Luitz; Y. Q. Ma; I. Machulin; A. Mandarano; S. Mari; J. Maricic; L. Marini; C. J. Martoff; A. Meregaglia; E. Meroni; P. D. Meyers; R. Milincic; D. Montanari; A. Monte; M. Montuschi; M. E. Monzani; P. Mosteiro; B. Mount; V. Muratova; P. Musico; A. Nelson; S. Odrowski; M. Okounkova; M. Orsini; F. Ortica; L. Pagani; M. Pallavicini; E. Pantic; L. Papp; S. Parmeggiano; R. Parsells; K. Pelczar; N. Pelliccia; S. Perasso; A. Pocar; S. Pordes; D. Pugachev; H. Qian; K. Randle; G. Ranucci; A. Razeto; B. Reinhold; A. Renshaw; A. Romani; B. Rossi; N. Rossi; S. D. Rountree; D. Sablone; P. Saggese; R. Saldanha; W. Sands; S. Sangiorgio; E. Segreto; D. Semenov; E. Shields; M. Skorokhvatov; O. Smirnov; A. Sotnikov; C. Stanford; Y. Suvorov; R. Tartaglia; J. Tatarowicz; G. Testera; A. Tonazzo; E. Unzhakov; R. B. Vogelaar; M. Wada; S. Walker; H. Wang; Y. Wang; A. Watson; S. Westerdale; M. Wojcik; A. Wright; X. Xiang; J. Xu; C. G. Yang; J. Yoo; S. Zavatarelli; A. Zec; C. Zhu; G. Zuzel

    2015-02-27T23:59:59.000Z

    We report the first results of DarkSide-50, a direct search for dark matter operating in the underground Laboratori Nazionali del Gran Sasso (LNGS) and searching for the rare nuclear recoils possibly induced by weakly interacting massive particles (WIMPs). The dark matter detector is a Liquid Argon Time Projection Chamber with a (46.4+-0.7) kg active mass, operated inside a 30 t organic liquid scintillator neutron veto, which is in turn installed at the center of a 1 kt water Cherenkov veto for the residual flux of cosmic rays. We report here the null results of a dark matter search for a (1422+-67) kg d exposure with an atmospheric argon fill. This is the most sensitive dark matter search performed with an argon target, corresponding to a 90% CL upper limit on the WIMP-nucleon spin-independent cross section of 6.1x10^-44 cm^2 for a WIMP mass of 100 GeV/c^2.

  16. The MACRO Experiment at Gran Sasso

    E-Print Network [OSTI]

    G. Giacomelli; A. Margiotta

    2007-07-11T23:59:59.000Z

    In this overview of the MACRO experiment we recall the structure of the detector and discuss several physics topics: atmospheric neutrinos and neutrino oscillations, high energy neutrino astronomy, searches for WIMPs and for low energy stellar gravitational collapse neutrinos, stringent upper limits on GUT magnetic monopoles, high energy downgoing muons, primary cosmic ray composition and shadowing of primary cosmic rays by the Moon and the Sun.

  17. anaerobios gran negativos: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    de Marseille, Universite de Provence Paris-Sud XI, Universit de 284 Academic team formation as evolving hypergraphs Carla Taramasco , , Physics Websites Summary: ENSTA, 45...

  18. The CUORE and CUORE-0 Experiments at Gran Sasso

    E-Print Network [OSTI]

    Giachero, A; Avignone, F T; Azzolini, O; Balata, M; Banks, T I; Bari, G; Beeman, J; Bellini, F; Bersani, A; Biassoni, M; Brofferio, C; Bucci, C; Cai, X Z; Camacho, A; Caminata, A; Canonica, L; Cao, X G; Capelli, S; Cappelli, L; Carbone, L; Cardani, L; Casali, N; Cassina, L; Chiesa, D; Chott, N; Clemenza, M; Copello, S; Cosmelli, C; Cremonesi, O; Creswick, R J; Cushman, J S; Dafinei, I; Dally, A; Datskov, V; Dell'Oro, S; Deninno, M M; Di Domizio, S; di Vacri, M L; Drobizhev, A; Ejzak, L; Fang, D Q; Farach, H A; Faverzani, M; Fernandes, G; Ferri, E; Ferroni, F; Fiorini, E; Franceschi, M A; Freedman, S J; Fujikawa, B K; Gironi, L; Giuliani, A; Gorla, P; Gotti, C; Gutierrez, T D; Haller, E E; Han, K; Heeger, K M; Hennings-Yeomans, R; Hickerson, K P; Huang, H Z; Kadel, R; Kazkaz, K; Keppel, G; Kolomensky, Yu G; Li, Y L; Ligi, C; Lim, K E; Liu, X; Ma, Y G; Maiano, C; Maino, M; Martinez, M; Maruyama, R H; Mei, Y; Moggi, N; Morganti, S; Napolitano, T; Nastasi, M; Nisi, S; Nones, C; Norman, E B; Nucciotti, A; O'Donnell, T; Orio, F; Orlandi, D; Ouellet, J L; Pagliarone, C E; Pallavicini, M; Pattavina, L; Pavan, M; Pedretti, M; Pessina, G; Pettinacci, V; Piperno, G; Pira, C; Pirro, S; Pozzi, S; Previtali, E; Rampazzo, V; Rosenfeld, C; Rusconi, C; Sala, E; Sangiorgio, S; Scielzo, N D; Sisti, M; Smith, A R; Taffarello, L; Tenconi, M; Terranova, F; Tian, W D; Tomei, C; Trentalange, S; Ventura, G; Vignati, M; Wang, B S; Wang, H W; Wielgus, L; Wilson, J; Winslow, L A; Wise, T; Woodcraft, A; Zanotti, L; Zarra, C; Zhang, G Q; Zhu, B X; Zucchelli, S

    2014-01-01T23:59:59.000Z

    The Cryogenic Underground Observatory for Rare Events (CUORE) is an experiment to search for neutrinoless double beta decay ($0\

  19. agudo por gran: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    por la investigacin cient-fica. El programa La Ciudad' intenta acercar la ciencia a la sociedad a travs de encuentros con escolares, profesores, o exposiciones que...

  20. ScholarShipSandGranTS/TUiTionandFEES Scholarships (continued)

    E-Print Network [OSTI]

    Elsherbeni, Atef Z.

    these awards. Additional details can be found on the financial aid web- page of each regional campus site application, sub- mit a 300-word (or two-page) essay, file the FAFSA, and maintain involvement in the First offers a wide array of financial aid opportunities, including scholarships, grants, loans and work

  1. ENERGIA E`OLICA La font d'energia amb el creixement mes gran

    E-Print Network [OSTI]

    Batiste, Oriol

    .lada: 48.000 MW Web World Wind energy Association http://www.wwindea.org Web Associaci´o danesa de la ind = 1 2 mv2 Pot`encia P = dEk dt = 1 2 dm dt v2 dm dt = Sv P = 1 2 Sv3 #12;RECURSOS EOLICS 1-2% de l L'ENERGIA E`OLICA #12;MERCAT PER FABRICANTS #12;PARCS E`OLICS MARINS #12;

  2. La Universidad de Alicante mide el gran impacto de las marcas en Espaa como motor econmico

    E-Print Network [OSTI]

    Escolano, Francisco

    comercio, en la proyección exterior del país, en el impulso de la I+D, en la contribución al empleo, en su participación en el comercio electrónico en España. El análisis de su impacto sobre el empleo es considerado por redactores de informe como uno de sus elementos fundamentales. Según estadísticas de 2010, las

  3. Prof. Dr. Gran Andersson, Director of Studies 03/10/14MEST 1

    E-Print Network [OSTI]

    || Prof. Dr. Göran Andersson, Director of Studies 03/10/14MEST 1 Master in Energy Science* Switzerland,*10* S.Korea,*1* Egypt,*1* China,*1* Austria, 1 Finland, 1 Germany, 5 Greece, 4 Italy, 1 Spain, 1 in the MEST? § Head of studies: Prof. Göran Andersson § Energy Science Center (ESC): Content Dr. Christian

  4. Double {beta} experiments with the help of scintillation and HPGe detectors at Gran Sasso

    SciTech Connect (OSTI)

    Barabash, A.; Konovalov, S. I.; Umatov, V. I. [Institute of Theoretical and Experimental Physics, Moscow (Russian Federation); Belli, P.; D'Angelo, S.; Di Marco, A. [INFN, Sezione di Roma ''Tor Vergata'', Rome (Italy); Bernabei, R. [INFN, Sezione di Roma ''Tor Vergata '', Rome (Italy); Dipartimento di Fisica, Universita di Roma ''Tor Vergata'', Rome (Italy); Boiko, R. S.; Chernyak, D. M.; Danevich, F. A.; Kobychev, V. V.; Kropivyansky, B. N.; Kudovbenko, V. M.; Nagorny, S. S.; Podviyanuk, R. B.; Polischuk, O. G.; Tretyak, V. I.; Vyshnevskyi, I. M.; Yurchenko, S. S. [Institute for Nuclear Research, Kyiv (Ukraine); Brudanin, V. B. [Joint Institute for Nuclear Research, Dubna (Russian Federation); and others

    2011-12-16T23:59:59.000Z

    A search for double beta decay of {sup 64,70}Zn, {sup 180,186}W was carried out by using low background ZnWO{sub 4} crystal scintillators, while a CeCl{sub 3} scintillation detector was applied to investigate 2{beta} processes in {sup 136,138,142}Ce. A search for 2{beta} decay of {sup 96,104}Ru, {sup 156,158}Dy, {sup 190,198}Pt and study of 2{nu}2{beta} decay of {sup 100}Mo to the first excited 0{sup +} level of {sup 100}Ru were realized by ultra-low background HPGe {gamma} spectrometry. Moreover, CdWO{sub 4} crystal scintillators from enriched {sup 106}Cd and {sup 116}Cd isotopes were developed to search for 2{beta} decay of {sup 106}Cd and {sup 116}Cd. Finally, experiments aimed to investigate {sup 96,104}Ru and {sup 116}Cd are in progress and a new phase of the experiment to search for 2{beta} processes in {sup 106}Cd is in preparation.

  5. Sustainable vector control and management of Chagas disease in the Gran Chaco, Argentina

    E-Print Network [OSTI]

    Cohen, Joel E.

    and economic development in Latin America, especially for the rural poor. We report the long-term effects cruzi In Latin America, the burden of Chagas disease was estimated as 2.7 times the joint burden in 1985, transmission resurged in 2­3 years. Renewed interventions in 1992 followed by sustained

  6. First breeding population of Bulwer's Petrel Bulweria bulwerii recorded on Gran Canaria (Canary Islands) - population size and morphometric data

    E-Print Network [OSTI]

    LUZARDO, J., LÓPEZ-DARIAS, M., SUÁREZ, V., CALABUIG, P., GARCÍA, E.A. & MARTÍN, C. Journal:  Marine Ornithology ...

  7. Bibliografa recomanada Hi ha una gran quantitat de llibres de text dedicats al tema de les Comunicacions ptiques, i tamb

    E-Print Network [OSTI]

    Colet, Pere

    of Photonics, Wiley 1991. - A. Yariv, Optical Electronics, Holt, Rinehart & Winston Inc., 1991 (4rth ed.) Mireu, Fiber Optics Communications, Prentice Hall 1984. - B. E. A. Saleh i M. C. Teich, Fundamentals

  8. R. Winther, B.A. Gran, and G. Dahll (Eds.): SAFECOMP 2005, LNCS 3688, pp. 136 150, 2005. Springer-Verlag Berlin Heidelberg 2005

    E-Print Network [OSTI]

    Kelly, Tim

    . © Springer-Verlag Berlin Heidelberg 2005 Using Safety Critical Artificial Neural Networks in Gas Turbine Aero networks. This paper examines the practicalities of using the SCANN and SLANN for Gas Turbine Aero arguments. Results illustrating the benefits and safety of the SCANN in a Gas Turbine Engine Model

  9. En Medio De Un Gran Circo: La Ciudad De México A Tráves De Las Crónicas Musicales De Maldita Vecindad Y Los Hijos Del 5º Patio

    E-Print Network [OSTI]

    Lujan, Soledad

    2014-01-01T23:59:59.000Z

    y económicos causados por el sismo: “Se habló de un númeropasadas dos semanas del sismo; entre cien y ciento cincuentadel terremoto declara que “El sismo reveló que de todos los

  10. Prdidas de insercin en diferentes tipos de materiales y rboles El gran avance que se est produciendo en los sistemas WiFi y WiMAX, y su habitual

    E-Print Network [OSTI]

    Autonoma de Madrid, Universidad

    trabajo que operan estos sistemas. Debido a la escasa información que existe con respecto a estas pérdidas escenarios, tanto interiores como exteriores, para las bandas de trabajo de 2.4 GHz, 3.3 GHz y 5.5 GHz. Este estudio se realizará a partir de enlaces de corta distancia, donde el obstáculo se interponga directamente

  11. Age determined from the daily deposition of concentric rings on common octopus

    E-Print Network [OSTI]

    Las Palmas de Gran Canaria Apdo. 550, Las Palmas de Gran Canaria Canary Islands, Spain E and May 1999, from catches of the small-scale fishery off the island of Gran Canaria (The Canary Islands

  12. 04/09/13 The US-Italy Physics Program at Laboratori Nazionali del Gran Sasso (LNGS) (15 October 2013) https://agenda.infn.it/conferenceOtherViews.py?fr=no&showSession=all&detailLevel=contribution&confId=6760&view=standard&showDate=all 1/1

    E-Print Network [OSTI]

    ' Speaker: Giovanni De Lellis (Università degli Studi di Napoli "Federico II") 16:20 Neutrinoless Double Beta Decay16:40 18:00 NEXT 20' Speaker: J. J. Gomez cadenac (Instituto de Fisica Corpuscolar valencia

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    E-Print Network [OSTI]

    por su fuerte exposición a los riesgos y por una gran vulnerabilidad frente a: sismos, derrumbes investigaciones se centran en los sismos de gran intensidad, la dinámica eruptiva de los volcanes cercanos a las

  14. Production, characterization and operation of $^{76}$Ge enriched BEGe detectors in GERDA

    E-Print Network [OSTI]

    Agostini, M; Andreotti, E; Bakalyarov, A M; Balata, M; Barabanov, I; Barros, N; Baudis, L; Bauer, C; Becerici-Schmidt, N; Bellotti, E; Belogurov, S; Belyaev, S T; Benato, G; Bettini, A; Bezrukov, L; Bode, T; Borowicz, D; Brudanin, V; Brugnera, R; Budjas, D; Caldwel, A; Cattadori, C; Chernogorov, A; D'Andrea, V; Demidova, E V; Domula, A; Egorov, V; Falkenstein, R; Freund, K; Frodyma, N; Gangapshev, A; Garfagnini, A; Gotti, C; Grabmayr, P; Gurentsov, V; Gusev, K; Hampel, W; Hegai, A; Heisel, M; Hemmer, S; Heusser, G; Hofmann, W; Hult, M; Inzhechik, L V; Ioannucci, L; Csathy, J Janicsko; Jochum, J; Junker, M; Kazalov, V; Kihm, T; Kirpichnikov, I V; Kirsch, A; Klimenko, A; Knöpfle, K T; Kochetov, O; Kornoukhov, V N; Kuzminov, V V; Laubenstein, M; Lazzaro, A; Lebedev, V I; Lehnert, B; Liao, H Y; Lindner, M; Lippi, I; Lubashevskiy, A; Lubsandorzhiev, B; Lutter, G; Macolino, C; Majorovits, B; Maneschg, W; Misiaszek, M; Nemchenok, I; Nisi, S; O'Shaughnessy, C; Palioselitis, D; Pandola, L; Pelczar, K; Pessina, G; Pullia, A; Riboldi, S; Rumyantseva, N; Sada, C; Salathe, M; Schmitt, C; Schreiner, J; Schulz, O; Schwingenheuer, B; Schönert, S; Shevchik, E; Shirchenko, M; Simgen, H; Smolnikov, A; Stanco, L; Strecker, H; Ur, C A; Vanhoefer, L; Vasenko, A A; von Sturm, K; Wagner, V; Walter, M; Wegmann, A; Wester, T; Wilsenach, H; Wojcik, M; Yanovich, E; Zavarise, P; Zhitnikov, I; Zhukov, S V; Zinatulina, D; Zuber, K; Zuzel, G

    2014-01-01T23:59:59.000Z

    The GERmanium Detector Array (GERDA) at the Gran Sasso Underground Laboratory (LNGS) searches for the neutrinoless double beta decay (0{\

  15. ANA?LISIS BIOLO?GICO PESQUERO DE LA PESQUERI?A CON RED AGALLERA DE DERIVA EN LA PENI?NSULA DE BAJA CALIFORNIA DURANTE EL PERIODO 1999-2008

    E-Print Network [OSTI]

    Olvera, Miguel A. E.

    2009-01-01T23:59:59.000Z

    esta gran cantidad de biomasa representaba un problema parauna alta diversidad y poca biomasa. La tercera masa de agua

  16. Production, characterization and operation of $^{76}$Ge enriched BEGe detectors in GERDA

    E-Print Network [OSTI]

    M. Agostini; M. Allardt; E. Andreotti; A. M. Bakalyarov; M. Balata; I. Barabanov; N. Barros; L. Baudis; C. Bauer; N. Becerici-Schmidt; E. Bellotti; S. Belogurov; S. T. Belyaev; G. Benato; A. Bettini; L. Bezrukov; T. Bode; D. Borowicz; V. Brudanin; R. Brugnera; D. Budjas; A. Caldwel; C. Cattadori; A. Chernogorov; V. D'Andrea; E. V. Demidova; A. Domula; V. Egorov; R. Falkenstein; K. Freund; N. Frodyma; A. Gangapshev; A. Garfagnini; C. Gotti; P. Grabmayr; V. Gurentsov; K. Gusev; W. Hampel; A. Hegai; M. Heisel; S. Hemmer; G. Heusser; W. Hofmann; M. Hult; L. V. Inzhechik; L. Ioannucci; J. Janicsko Csathy; J. Jochum; M. Junker; V. Kazalov; T. Kihm; I. V. Kirpichnikov; A. Kirsch; A. Klimenko; K. T. Knöpfle; O. Kochetov; V. N. Kornoukhov; V. V. Kuzminov; M. Laubenstein; A. Lazzaro; V. I. Lebedev; B. Lehnert; H. Y. Liao; M. Lindner; I. Lippi; A. Lubashevskiy; B. Lubsandorzhiev; G. Lutter; C. Macolino; B. Majorovits; W. Maneschg; M. Misiaszek; I. Nemchenok; S. Nisi; C. O'Shaughnessy; D. Palioselitis; L. Pandola; K. Pelczar; G. Pessina; A. Pullia; S. Riboldi; N. Rumyantseva; C. Sada; M. Salathe; C. Schmitt; J. Schreiner; O. Schulz; B. Schwingenheuer; S. Schönert; E. Shevchik; M. Shirchenko; H. Simgen; A. Smolnikov; L. Stanco; H. Strecker; C. A. Ur; L. Vanhoefer; A. A. Vasenko; K. von Sturm; V. Wagner; M. Walter; A. Wegmann; T. Wester; H. Wilsenach; M. Wojcik; E. Yanovich; P. Zavarise; I. Zhitnikov; S. V. Zhukov; D. Zinatulina; K. Zuber; G. Zuzel

    2014-10-03T23:59:59.000Z

    The GERmanium Detector Array (GERDA) at the Gran Sasso Underground Laboratory (LNGS) searches for the neutrinoless double beta decay (0{\

  17. SPIE Europe spie.org/events/emtadvance TEL: +44 29 20 89 4747 spieeurope@spieeurope.org 1 Building a Better Future with Light

    E-Print Network [OSTI]

    Islam, M. Saif

    , and Applications 2­4 May 2007 Gran Hotel Costa Meloneras Maspalomas, Gran Canaria, Spain Microtechnologies (Spain) Roberto Sarmiento Rodríguez, Univ. Las Palmas de Gran Canaria (Spain) Steve Kang, Univ, Koç Univ. (Turkey) Cochairs: Gonçal Badenes, Institut de Ciències Fotòniques (Spain); Giancarlo C

  18. ¿ES EL PROCESO DE “CONSTITUCIONALIZACIÓN” (JUDICIALIZACIÓN) DEL DERECHO PRIVADO CONTRARIO AL ANÁLISIS ECONÓMICO DEL DERECHO?

    E-Print Network [OSTI]

    Súmar A., Óscar

    2010-01-01T23:59:59.000Z

    contrato sea absoluto, bajo la sola condición imperativo queel proceso de captura, sino su sola existencia. Al estar elesta legislación por sí sola no hubiera representado un gran

  19. POSTDOCTORAL RESEARCH ASSOCIATE Weak Interactions Group

    E-Print Network [OSTI]

    Devoret, Michel H.

    double beta decay experiment under construction at Gran Sasso National&D for a future South Pole deployment. CUORE is a cryogenic bolometer-based neutrinoless

  20. alpha-gamma hot-cell facility: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    LUNA in Gran Sasso, Italy, and a windowless deuterium gas target are used. A low neutron flux is induced by energetic deuterons from elastic scattering and, subsequently, the...

  1. Complex origins of the Lusitania biogeographic province and northeastern Atlantic fishes

    E-Print Network [OSTI]

    2013-01-01T23:59:59.000Z

    and Gran Canaria (Canary Islands).  Bulle? tin of Azores, Madeira,  the  Canary  Islands,  Cape  Verde  and Azores, Madeira and the Canary Islands.   Recently,  Briggs 

  2. adhesivas amarillas utilizadas: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    de gran tamao presentan carac- ter-sticas estructurales generales. Predo- minan Fortuna, Miguel A. 83 CMNECILAMCE 2007 Porto, 13 a 15 de Junho, 2007 Engineering Websites...

  3. Bonfil y la civilización del común. Crónica de un itinerario utópico.

    E-Print Network [OSTI]

    Varese, Stefano

    2011-01-01T23:59:59.000Z

    magistral  de  gran  calidad  etnográfica  sobre naguales y intelectual  de  dudosa  calidad  ética.    “De  repente todos con la más alta calidad profesional, se forma el 

  4. antibiotics threaten wildlife: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Daszak et al., 2000; Friend et Ambiente, Gran Via de San Francisco 4, 28005 Madrid, Spain. Summary The impact on wildlife health and the effects of bacterial antibiotic...

  5. atmospheric 222rn decay: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    performed in the Gran Sasso Laboratory (LNGS) by detecting the gamma rays from the radon progeny. The motivation was to monitor the stability of radioactivity measuring several...

  6. ambient radioactivity monitoring: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    performed in the Gran Sasso Laboratory (LNGS) by detecting the gamma rays from the radon progeny. The motivation was to monitor the stability of radioactivity measuring several...

  7. airborne radioactivity measurements: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    performed in the Gran Sasso Laboratory (LNGS) by detecting the gamma rays from the radon progeny. The motivation was to monitor the stability of radioactivity measuring several...

  8. artificial radioactivity measurements: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    performed in the Gran Sasso Laboratory (LNGS) by detecting the gamma rays from the radon progeny. The motivation was to monitor the stability of radioactivity measuring several...

  9. National Aeronautics and Space Administration www.nasa.gov

    E-Print Network [OSTI]

    Waliser, Duane E.

    Rani Gran Goddard TV, THEMIS Producer 0/286-248 44/226-77 cell Rani .C .Gran@nasa .gov NASA Kennedy window of 6:08 P .M . ­ 6:27 P .M . The Delta II rocket carrying THEMIS will lift off from Launch Complex

  10. Cmo la globalizacin fomenta y mitiga a la vez la desigualdad

    E-Print Network [OSTI]

    Bilbao Arrese, Jesús Mario

    premio Nobel de Economía de Harvard, el fallecido Simon Kuznets, enunció una famosa ley, la ley de Kuznets: 1) Las sociedades pobres y atrasadas tienden a sufrir gran desigualdad. 2) Sin embargo, cuando física o las matemáticas. La Ley de Kuznets, antes y después de que este gran estadístico muriera, empezó

  11. T e c h n ic a l P r o g r a m RegisterTodayandSave$100!

    E-Print Network [OSTI]

    Chiao, Jung-Chih

    Costa Meloneras Maspalomas, Gran Canaria, Canary Islands, Spain Conferences · Tabletop Exhibition Meloneras Maspalomas, Gran Canaria, Canary Islands, Spain Plan now to attend! This symposium brings four GovernmentCanary Government Canary Islands Special ZoneCanary Islands Special ZoneCanary Islands Special ZoneCanary

  12. Weaver, P.P.E., Schmincke, H.-U., Firth, J.V., and Duffield, W. (Eds.), 1998 Proceedings of the Ocean Drilling Program, Scientific Results, Vol. 157

    E-Print Network [OSTI]

    of the Ocean Drilling Program, Scientific Results, Vol. 157 127 11. CHRONOSTRATIGRAPHY OF GRAN CANARIA1 Paul/Pliocene volcanism on Gran Canaria (Canary Islands) has been established by single- crystal 40Ar/39Ar laser dating to rhyolitic composition (Mogán Group). Single-crystal 40Ar/39Ar laser dating shows that the ash flows erupted

  13. MEDIDAS DE AHORRO DE CONSUMO ENERGTICO EN ILUMINACIN

    E-Print Network [OSTI]

    Rey Juan Carlos, Universidad

    de luminaria que se va a instalar, debido a que algunas causan un gran impacto en el consumo final de;adecuar las luminarias en función de dichos requerimientos. Aunque en el mercado existe una gran variedad de productos, la mejor elección que se puede adoptar es la compra de luminarias de bajo consumo

  14. RECORRIDOS, ESPACIOS Y DESÁNIMOS POR LA CIUDAD DE MÉXICO EN CARLOS MONSIVÁIS

    E-Print Network [OSTI]

    Karam, Tanius

    2011-01-01T23:59:59.000Z

    solo partido político, una sola religión. . . ). Uno de losciudad está en el centro como sola y tumultuaria (Monviáis,de todos atrapa en una sola gran vertiente, es la riqueza

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    E-Print Network [OSTI]

    Rossiter, D G "David"

    gran parte de esta altamente relevante para la planificación y ejecución de inventarios del recurso y fortalecer la calidad de los inventarios (SRI), reducir el tiempo de ejecución y eficientizar los

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    Boyer, Edmond

    residual nucleus energy spectra appear to be in agreement with the inter- mediate coupling shell probabilité relative pour 6 3 Li-» t + He est par contre d'un ordre de gran- deur plus petit. Les spectres d

  17. Motivation Linear algebra Metaheuristics CPU+GPU Perspectives Modelling the execution time of hybrid-parallelism

    E-Print Network [OSTI]

    Giménez, Domingo

    ´andez; Francisco Almeida, University of La Laguna; Melquiades P´erez-P´erez, University of Gran Canaria) Electrical? Scientific problems: Green functions in Electromagnetism (Carlos P´erez-Alcaraz; Alejandro ´Alvarez

  18. 172 Rodrfguez, F.C. y Corges, J.-C. 1 Arqueologa Espadal 26 (2006) 1 171-192 Introduccion

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    2006-01-01T23:59:59.000Z

    antiguas ccn- turiaciones (Ardio Gil y Gurt, 1994) C01DO de los vestigios dei habitat rural, que pretiere cruce en los extremos de un gran rio va a favorecer, por supuesto, el desarrollo de

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    E-Print Network [OSTI]

    Heiz, Ulrich

    100.000 years LNGS Laboratori Nazionali del Gran Sasso Borexino THE THERMONUCLEAR FUSION REACTIONHydrogen Hydrogen Fusion Deuterium FusionFusionFusionFusionFusionFusion THE SUN AS BOREXINO SEES

  20. Dept. for Speech, Music and Hearing Quarterly Progress and

    E-Print Network [OSTI]

    Carlson, Rolf

    performance. Parallels and contrasts Carlson, R. and Friberg, A. and Fryd´en, L. and Granstr¨om, B languages (Carlson & Gran- strom, 1975a; 1986: Carlson, Granstrom, & Hunnicutt, 1982). The ap- proach taken

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    E-Print Network [OSTI]

    Richner, Heinz

    pasado no es de gran ayuda para la toma de decisiones. Como sabemos desde la experiencia de los Annales corriente latinoamericana que tuvo en la revolución cubana su epicentro, y a la que se fueron sumando

  2. Universit degli Studi di BARI Cdl in Scienze Attivit Motorie e Sportive

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    Malerba, Donato

    in campo tedesco con l'espressione "soluzione finale"? A) La decisione di Hitler di eliminare fisicamente tutti gli ebrei europei B) La decisione di Hitler di invadere la Gran Bretagna C) Il nome in codice dell

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    Islas, León

    tránsito #12;Para el AC con fronteras abiertas: ·Al realizar las simulaciones individuales del AC. ·El modelo de AC es minimal, pero es un punto de partida para simulaciones a gran escala. Ref. Physca

  4. argon 50: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Preprints Summary: DarkSide (DS) at Gran Sasso underground laboratory is a direct dark matter search program based on TPCs with liquid argon from underground sources. The DS-50...

  5. argon 45: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Preprints Summary: DarkSide (DS) at Gran Sasso underground laboratory is a direct dark matter search program based on TPCs with liquid argon from underground sources. The DS-50...

  6. Sean Hewitt Wild Mountain Thyme

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    Robertson, Stephen

    Se´an Hewitt Wild Mountain Thyme Christmas day. We're all at my gran's house, The full, Catholic notes to Wild Mountain Thyme, And our voices warm And swell around The sunken armchair left Empty since

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    E-Print Network [OSTI]

    P. Bernardini

    2002-09-16T23:59:59.000Z

    MACRO experiment operated in the Gran Sasso underground laboratory. Neutrino events collected by this detector are used in order to study the atmospheric neutrino flux. Different measurements in different energy samples are in full agreement and show evidence of neutrino oscillation phenomenon. Also the search for neutrino astrophysical sources is reported.

  8. The Influence of Thermal Convection on Density Segregation in a Vibrated Binary Granular System

    E-Print Network [OSTI]

    Al Hanbali, Ahmad

    of this work strongly imply the possibility that, for an adequately fluidised granular bed, the degree^ole of diffusive behaviour in the segregation of a gran- ular bed in the convective regime. The results on the fluctuation of particle velocities about a mean value [53]. For a granular bed excited by, for instance

  9. Cimbelina en 1900 y pico: Las tácticas de la (re)escritura en el teatro de Alfonsina Storni

    E-Print Network [OSTI]

    Prieto, Julio

    1998-10-01T23:59:59.000Z

    , José? Su cabeza es una obra de arte. JOSÉ: Un gran cortador, María Elena: Mariano... MARIA ELENA: ¿Y quién le da masajes? Su tez es un racimo de uvas doradas... JOSÉ: Mi masajista es el oleaje, María Elena... (191) El grado extremo de esta irónica...

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    -relief topography, 2) post-Miocene surface uplift of the range superimposed on pre-existing high-relief topographyPOLYGENETIC TOPOGRAPHY OF THE CASCADE RANGE, WASHINGTON STATE, USA SARA GRAN MITCHELL Range of Washington State by analyzing the topography, geology, and exhumation patterns across the range

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    Giménez, Domingo

    ´on paralela como secuencial (´algebra lineal) Inter´es en el cluster SOL Material ´util para el Grupo de Algebra Subprograms) Biblioteca de funciones que llevan a cabo operaciones b´asicas con matrices y vectores. Gran eficiencia y difusi´on. Est´andar de facto. LAPACK (Linear Algebra PACKage) Biblioteca que

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    E-Print Network [OSTI]

    Fernández Gallardo, Pablo

    ´ALGEBRA LINEAL Curso 2007-2008 1 Introducci´on Se recogen aqu´i algunos comentarios que pueden ecuaciones lineales que hay que resolver. Gran parte de los ejercicios de ´Algebra Lineal se reducen, de una forma u otra, a sistemas de ecuaciones lineales. Es muy conveniente, y se pedir´a en los ex´amenes de la

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    E-Print Network [OSTI]

    Sociedad del Conocimiento. Reformas y Adiciones a la Ley de Ciencia y Tecnología, que tuvo lugar en el General del Consejo Nacional de Ciencia y Tecnología, doctor Enrique Cabrero Mendoza. -DR. ENRIQUE CABRERO de gran satisfacción estar reunidos para dar cuenta de avances trascendentes en la agenda de ciencia

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    Adams, Robert P.

    CEDRUS WEBB. & BERTHOL. FROM MADEIRA AND THE CANARY ISLANDS. Robert P. Adams Biology Department, Baylor and Evolution Research Group (IPNA-CSIC), 38206 La Laguna, Tenerife, Canary Islands, Spain Susana S. Fontinha, Tenerife, Canary Islands, Spain ABSTRACT The volatile leaf oils of J. cedrus from Madeira, Gran Canaria, La

  15. Universidad de Buenos Aires Facultad de Ciencias Exactas y Naturales

    E-Print Network [OSTI]

    Figueira, Santiago

    ´ancer, existen un grupo de t´ecnicas que tienen como caracter´istica com´un la aplicaci´on de campos el´ectricos pulsos el´ectricos cortos y de gran intensidad (Pulsos de Campo El´ectrico (PEF)). Esto permite el El´ectrico, Electroporaci´on, Electroterapia, Electroterapia G´enica, Electrotransferencia G´enica. i

  16. Envision your future in engineering

    E-Print Network [OSTI]

    Dyer, Bill

    , or construction or to persist in your program As you read about a woman's experience of overcoming health issues and construction, and on the future of our society cannot be overstated With great pride, Heidi Sherick Assistant various national laboratories, including the Gran Sasso Laboratory. After traveling, we went to Princeton

  17. La Casa Verde de Mario Vargas Llosa: una imagen del hombre 

    E-Print Network [OSTI]

    Frick, Magdalena Capurro

    1976-01-01T23:59:59.000Z

    , Vargas Llosa ha presentado diversos aspectos de la realidad peruana, logrando una vision en profundi dad del hombre y la sociedad que puede tener validez para toda America Latina Su segunda gran novels, La Casa Verde, publicada en 1966, consolido el...

  18. Universidad de Buenos Aires Facultad de Ciencias Exactas y Naturales

    E-Print Network [OSTI]

    Figueira, Santiago

    demostrador basado en este c´alculo. En este trabajo incorporamos orden y selecci´on al c´alculo propuesto en guiarme hasta ac´a salvando, literalmente, una gran distancia. Tambi´en al jurado, por tomarse el tiempo de leer y corregir este trabajo. A mi familia porque siempre me dio ´animo pero sin presionar nunca

  19. Y CONTANDO... 24 de agosto de 200955 Aniversario de2

    E-Print Network [OSTI]

    Islas, León

    trabajo de quienes le han dado vida en estos 55 años ­que se cumplieron precisamente ayer 23 de agosto una proximidad efectiva, en gran parte por la especialización profesional y la distancia física que. "El verdadero trabajo intelectual queda reservado al estudio personal y libre, el cual se des

  20. Signal Processing for High Granularity Calorimeter: Amplification, Filtering, Memorization and

    E-Print Network [OSTI]

    Boyer, Edmond

    the amplification of the charge delivered by the detector thanks to a low-noise Charge Sensitive Amplifier in Fig.1 is com- posed of a low-noise Charge Sensitive Amplifier (CSA) fol- lowed by a shaping stage gran- ularity calorimeters has been designed and its performance measured. This electronics performs

  1. CURRENT AND PAST RESEARCH Research on Biodiversity and Ecosystem Services

    E-Print Network [OSTI]

    Johnson, Eric E.

    Science Foundation gran on Coupled Nat- ural and Human Systems. The effort is looking at Acequia water systems in northern New Mexico and linking culture and nature in an integrated analysis of commu- nity, NRCS, and ARS on using alternative future scenarios using climate change urban growth to identify

  2. Cell Metab . Author manuscript CXC ligand 5 is an adipose-tissue derived factor that links obesity to

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    that links obesity to insulin resistance Carine Chavey 1 2 , Gwendal Lazennec 3 , Sylviane Lagarrigue 1 2 Barcelona , Gran Via de les Corts Catalanes, 585 08007 Barcelona,ES Department of Sport Medicine and Obesity that CXCL5 is dramatically increased in serum of human obese compared to lean subjects. Conversely, CXCL5

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    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    . Several Software De- velopment Life Cycle (SDLC) have been proposed like the "Waterfall", "Spiral-cycle descriptions. The gran- ularity of SDLC models is too coarse-grained and fails to describe elementary process is supported by the IST European project MODELPLEX (contract n IST-3408) and the TOPCASED project. SDLC

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    sostenible, Rio+20, se ha puesto en marcha un programa tripartito entre África, Brasil y Francia sobre la Gran Muralla Verde (APGMV), el Centro Gestión y Estudios Estratégicos de Brasil (CGEE) y el Consejo en Brasil y Camerún. También existe una mutualizaciónconlosmiembrosfundadoresdelaAIRD,através de

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    Gering, Jon C.

    Foley Faculty Mentor: Kelly Walter The In-Between Lincoln: Republican Party Formation in Illinois, 1846 Gran and David Charles Goyette Finnegan's Wake: James Joyce and the Public Nathan Sandbothe Faculty Disorder David Schultz Faculty Mentor: Jeffrey Vittengl Self-Fashioning of James McNeill Whistler Mamie Cox

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    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    innegable su historia y su desarrollo. En épocas recientes, el aprovechamiento de estos recursos a nivel desarrollo local y la protección de sus áreas combinando el aprovechamiento turístico. #12;1874 - XIV vive en Loreto es en gran parte rural, con un índice importante de población indígena. El Plan Director

  8. La Universidad de Alicante clausura el curso acadmico con la investidura de 62 nuevos doctores y doctoras

    E-Print Network [OSTI]

    Escolano, Francisco

    doctoras El rector apuesta en su discurso por la universidad "como el proyecto social capaz de liderar los estas premisas, Manuel Palomar ha apostado por la universidad "como el gran proyecto social capaz de liderar los cambios hacia el progreso económico y el bienestar, gracias a la formación, el conocimiento y

  9. Identification of Shark Species Composition and Proportion in the Hong Kong Shark Fin Market Based

    E-Print Network [OSTI]

    sensitivities. Based on information from traders and morphological inspection, we hypothesized matches between incorporated the concordance information and available market auction records for these categories: El floreciente y en gran parte no regulado comercio de aletas de tibur´on representa una de las m

  10. Weaver, P.P.E., Schmincke, H.-U., Firth, J.V., and Duffield, W. (Eds.), 1998 Proceedings of the Ocean Drilling Program, Scientific Results, Vol. 157

    E-Print Network [OSTI]

    of the Ocean Drilling Program, Scientific Results, Vol. 157 329 19. 40Ar/39Ar AGES OF PLIOCENE heterolithologic volcaniclastic deposits drilled at Holes 953A, 954A, 954B, and 956A, dur- ing Leg 157 in the sedimentary aprons of Gran Canaria and Tenerife, have been dated by single crystal laser 40 Ar/39 Ar analysis

  11. Physics of Atomic Nuclei, Vol. 67, No. 6, 2004, pp. 12201226. From Yadernaya Fizika, Vol. 67, No. 6, 2004, pp. 12421248. Original English Text Copyright c 2004 by Arnaboldi, Artusa, Avignone III, Balata, Bandac, Barucci, Beeman, Brofferio, Bucci, Capelli,

    E-Print Network [OSTI]

    1/2 5 × 1023 yr, corresponding to an effective Majorana mass of the electron neutrino m between 0 a strong case that if neutrinos are Majorana particles, there are many scenarios in which next generation) Laboratori Nazionali del Gran Sasso dell'INFN, Assergi (L'Aquila), Italy. 3) Dipartimento di Fisica dell

  12. New Limit on the Neutrinoless Decay of 130 C. Arnaboldi,1

    E-Print Network [OSTI]

    V is expected in the KATRIN experiment [13]. If neutrinos are Majorana particles more stringent constraints of South Carolina, Columbia, South Carolina 29208, USA 3 Laboratori Nazionali del Gran Sasso, I-67010'INFN, Firenze I-50125, Italy 5 Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA 6

  13. Max Planck Institute for Physics

    E-Print Network [OSTI]

    experiment is to either establish the Majorana nature of the neutrino or push the relevant exclusion limits construction at Gran Sasso underground laboratory in Italy (Reference code: CRESST). MAGIC is the world with high precision UHE cosmic rays above the GZK energy and UHE neutrinos (Reference code: EUSO). H1

  14. DOI 10.1140/epja/i2007-10577-0 Regular Article Experimental Physics

    E-Print Network [OSTI]

    access to the mea- surement of the absolute neutrino mass scale [7]. Indeed, if neutrino is a Majorana to the so-called Majorana mass of the neutrino, which is a combination of the neutrino mass eigenvalues [7-Bicocca, Milano, Italy 2 INFN-Sezione di Milano-Bicocca, Milano, Italy 3 INFN, Laboratori Nazionali del Gran Sasso

  15. Hag(e)ografía: Propaganda ideológica y política geográfica en los discursos hagiográficos peninsulares. La construcción de la nación española (siglos XIII a XVII)

    E-Print Network [OSTI]

    Garcia Otero, Maria Jose

    2012-01-01T23:59:59.000Z

    de la gran crisis política y económica que azotaba a la nación a causa de la mala gestión de Felipe III, España llegaba a su máxima expansión territorial, y por otro, a pesar de los nefastos resultados que la expulsión de los moriscos y la...

  16. artery disease challenges: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    challengeS in UnderStanding earth'S dynamic SyStemS January 2009 Long-range Science PLan for SeiSmoLogy WorkSmoLogicaL granD chaLLengeS in unDerStanDing earth'S Dynamic SyStemS...

  17. aggressive challenging behaviour: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    challengeS in UnderStanding earth'S dynamic SyStemS January 2009 Long-range Science PLan for SeiSmoLogy WorkSmoLogicaL granD chaLLengeS in unDerStanDing earth'S Dynamic SyStemS...

  18. aging status challenges: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    challengeS in UnderStanding earth'S dynamic SyStemS January 2009 Long-range Science PLan for SeiSmoLogy WorkSmoLogicaL granD chaLLengeS in unDerStanDing earth'S Dynamic SyStemS...

  19. acute salinity challenges: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    challengeS in UnderStanding earth'S dynamic SyStemS January 2009 Long-range Science PLan for SeiSmoLogy WorkSmoLogicaL granD chaLLengeS in unDerStanDing earth'S Dynamic SyStemS...

  20. accident thermal challenge: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    challengeS in UnderStanding earth'S dynamic SyStemS January 2009 Long-range Science PLan for SeiSmoLogy WorkSmoLogicaL granD chaLLengeS in unDerStanDing earth'S Dynamic SyStemS...

  1. adult volunteers challenged: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    challengeS in UnderStanding earth'S dynamic SyStemS January 2009 Long-range Science PLan for SeiSmoLogy WorkSmoLogicaL granD chaLLengeS in unDerStanDing earth'S Dynamic SyStemS...

  2. VVas de acceso abierto para laas de acceso abierto para la producciproduccin cientn cientfica CSICfica CSIC

    E-Print Network [OSTI]

    , BMC, Copernicus, Hindawi, MDPI..pero a gran distancia Primeros estudios del aumento de impacto de los vigor en CSIC Los sujetos a mandatos (unos 80, un 20%) son sobre todo de las áreas de Medio ambiente Criterios a favor: Factor de impacto, calidad de peer- review, mayor visibilidad, rapidez de publicación

  3. THE STATE OF ASTRONOMY IN MEXICO I. Aretxaga

    E-Print Network [OSTI]

    Aretxaga, Itziar

    into the framework of the basic elements and forces of nature, such as the proposal that dark matter and dark energy-mm Infrastructure 3.3 The Gran Telescopio Canarias (GTC) 3.4 The High Altitude Water Cherenkov Experiment (Hawc) 3

  4. Jrme Monnet, "El territorio reticular", 2013, p. 1 / 18 Publicado en : B. Nates Cruz (coord.), Enfoques y mtodos en estudios territoriales,

    E-Print Network [OSTI]

    Boyer, Edmond

    Universidad de Caldas, 2013, p.137-167 (Traducción por A.F. Cardona Jiménez de un articulo originalmente A partir de la segunda mitad del siglo XX, el concepto de territorio ha cobrado una gran importancia, tanto en los debates de las ciencias sociales como en las políticas públicas. Este concepto remite a las

  5. ORINOCO Framework: Publicacion, Composicion y Ejecucion de SERVICIOS WEB en

    E-Print Network [OSTI]

    Cardinale Villarreal, Yudith C.

    Keysis Kiss1 , Eduardo Blanco2 , and Yudith Cardinale2 1 Universidad Central de Venezuela, Facultad de Ciencias,Escuela de Computaci´on Apartado 1010, Caracas, Venezuela {kkiss}@gmail.com 2 Universidad Sim-A, Venezuela {eduardo,yudith}@ldc.usb.ve Abstract La gran cantidad de servicios existentes en

  6. Search for 2{\\beta} decay of 116Cd with the help of enriched 116CdWO4 crystal scintillators

    E-Print Network [OSTI]

    Poda, D V; Belli, P; Bernabei, R; Cappella, F; Caracciolo, V; Castellano, S; Chernyak, D M; Cerulli, R; Danevich, F A; d'Angelo, S; Incicchitti, A; Kobychev, V V; Konovalov, S I; Laubenstein, M; Podviyanuk, R B; Polischuk, O G; Shlegel, V N; Tretyak, V I; Umatov, V I; Vasiliev, Ya V

    2014-01-01T23:59:59.000Z

    Cadmium tungstate crystal scintillators enriched in $^{116}$Cd to 82% ($^{116}$CdWO$_4$, total mass of $\\approx$1.2 kg) are used to search for 2$\\beta$ decay of $^{116}$Cd deep underground at the Gran Sasso National Laboratory of the INFN (Italy). The radioactive contamination of the $^{116}$CdWO$_4$ crystals has been studied carefully to reconstruct the background of the detector. The measured half-life of $^{116}$Cd relatively to 2$\

  7. The bioarchaeology of Blue Bayou: a late prehistoric mortuary site from Victoria county, Texas

    E-Print Network [OSTI]

    Comuzzie, Anthony Gean

    1987-01-01T23:59:59.000Z

    THE BIOARCHAEOLOGY OF BLUE BAYOU: A LATE PREHISTORIC MORTUARY SITE PROM VICTORIA COUNTYr TEXAS A Thesis ANTHONY GEAN COMUZZ1E Suhmitted to the Graduate College of Texas AAM University in partial fulfillment of the requirements for the degree... of MASTER OF ARTS May 1987 Major Subject: Anthropology THE BIOARCHAEOLOGY OF BLUE BAYOU: A LATE PREHISTORIC MORTUARY SITE FROM VICTORIA COUNTY, TEXAS A Thesis ANTHONY GRAN COMUZZIE Approved as to style and content by: D. Gentry Steele (Chairman cf...

  8. Una recapitulación de la renovación teatral en Hispanoamerica.

    E-Print Network [OSTI]

    Neglia, Erminio G.

    1974-10-01T23:59:59.000Z

    FALL 1974 57 Una recapitulación de la renovación teatral en Hispanoamérica* ERMINIO G. NEGLIA Por su llamativa actualidad y su abundancia, la producción dramática hispano americana de los últimos treinta años ha opacado en gran parte el aporte... norteameri cano, sino también de los otros géneros literarios de Hispanoamérica. Desde 1940, se ha venido observando la continuación de este proceso de modernización, al integrarse el teatro cada vez más con las nuevas modalidades de la dramaturgia...

  9. XII (1997) y XIII (1998) edición del Festival Iberoamericano de Teatro de Cádiz

    E-Print Network [OSTI]

    Reverte Bernal, Concepció n

    1999-10-01T23:59:59.000Z

    consecuencia del crack de la bolsa, cuando pensaban que su posición estaba asegurada. Con la magnífica interpretación de Guillermo Gil, Víctor Hugo Martín y José Carlos Rodríguez y dirección de Luis de Tavira, el espectáculo, sustentado en el diálogo, gustó... salto más allá para establecer valores desconocidos; El Periférico de Objetos ejerce el teatro para hacer visible aquello que, culturalmente, de ninguna forma y bajo ningún pretexto puede serlo." La obra ha tenido gran éxito en Buenos Aires (según...

  10. CMNE/CILAMCE 2007 Porto, 13 a 15 de Junho, 2007

    E-Print Network [OSTI]

    Colominas, Ignasi

    corriente es fundamental en el c´alculo y dise~no de redes de tierras de subestaciones el´ectricas. En el subestaciones el´ectricas enterradas y que constituye un problema de gran importancia hoy en d´ia. En este art INSTALACIONES EL´ECTRICAS I. Colominas, F. Navarrina y M. Casteleiro GMNI -- Grupo de M´etodos Num´ericos en

  11. CdWO4 crystal scintillators from enriched isotopes for double beta decay experiments

    E-Print Network [OSTI]

    D. V. Poda; A. S. Barabash; P. Belli; R. Bernabei; R. S. Boiko; V. B. Brudanin; F. Cappella; V. Caracciolo; S. Castellano; R. Cerulli; D. M. Chernyak; F. A. Danevich; S. d'Angelo; V. Ya. Degoda; M. L. Di Vacri; A. E. Dossovitskiy; E. N. Galashov; A. Incicchitti; V. V. Kobychev; S. I. Konovalov; G. P. Kovtun; M. Laubenstein; A. L. Mikhlin; V. M. Mokina; A. S. Nikolaiko; S. Nisi; R. B. Podviyanuk; O. G. Polischuk; A. P. Shcherban; V. N. Shlegel; D. A. Solopikhin; V. I. Tretyak; V. I. Umatov; Ya. V. Vasiliev; V. D. Virich

    2013-02-20T23:59:59.000Z

    Cadmium tungstate crystal scintillators enriched in 106Cd and 116Cd were developed. The produced scintillators exhibit good optical and scintillation properties, and a low level of radioactive contamination. Experiments to search for double beta decay of 106Cd and 116Cd are in progress at the Gran Sasso National Laboratories of the INFN (Italy). Prospects to further improve the radiopurity of the detectors by recrystallization are discussed.

  12. CdWO4 crystal scintillators from enriched isotopes for double beta decay experiments

    E-Print Network [OSTI]

    Poda, D V; Belli, P; Bernabei, R; Boiko, R S; Brudanin, V B; Cappella, F; Caracciolo, V; Castellano, S; Cerulli, R; Chernyak, D M; Danevich, F A; d'Angelo, S; Degoda, V Ya; Di Vacri, M L; Dossovitskiy, A E; Galashov, E N; Incicchitti, A; Kobychev, V V; Konovalov, S I; Kovtun, G P; Laubenstein, M; Mikhlin, A L; Mokina, V M; Nikolaiko, A S; Nisi, S; Podviyanuk, R B; Polischuk, O G; Shcherban, A P; Shlegel, V N; Solopikhin, D A; Tretyak, V I; Umatov, V I; Vasiliev, Ya V; Virich, V D

    2013-01-01T23:59:59.000Z

    Cadmium tungstate crystal scintillators enriched in 106Cd and 116Cd were developed. The produced scintillators exhibit good optical and scintillation properties, and a low level of radioactive contamination. Experiments to search for double beta decay of 106Cd and 116Cd are in progress at the Gran Sasso National Laboratories of the INFN (Italy). Prospects to further improve the radiopurity of the detectors by recrystallization are discussed.

  13. PRIMER CONGRS NACIONAL 2 Circular (pre-programa)

    E-Print Network [OSTI]

    Escolano, Francisco

    PRIMER CONGR�S NACIONAL 2ª Circular (pre-programa) EL PAISATGE DELS RIURAUS: ARQUITECTURA, HER�NCIA dels riuraus: arquitectura, herència i reptes. Tot partint d'aquestes premisses el congrés pretén rebre a quatre grans àmbits: 1. ETNOGR�FIC-HIST�RIC 2. ARQUITECTURA I PAISATGE RURAL 3. TURÍSTIC I TERRITORIAL 4

  14. Latin American Theatre Review, Volume 27, Number 1: Book Reviews

    E-Print Network [OSTI]

    1993-10-01T23:59:59.000Z

    regresan a su punto inicial y proponen que incluso se podría examinar "si las estructuras lingüísticas crean nuevos valores femeninos" o si las dramaturgas "reproducen los patrones culturales acuñados dentro del orden masculino" (24). Las aportaciones... cada escritora. Desde nuestro punto de vista, el "Ensayo en respuesta al cuestionario" de Buitrago resulta de gran interés pues no se limita a contestar sistemáticamente cada una de las preguntas. Las extensas y bien pensadas respuestas de Gámbaro...

  15. construyendo dossier de prensa

    E-Print Network [OSTI]

    construyendo ciencia 365 días dossier de prensa #12;construyendo ciencia 365 días1. 365 días construyendo ciencia 2. Un gigante en marcha 3.Primera ciencia con GTC 4.Eficiencia en la observación 5. GTC capacidad empresarial, tecnológica y científica para acometer y desarrollar proyectos de "gran ciencia". Se

  16. 50 años de teatro en la Universidad Católica: Crear es andar detrás de la verdad

    E-Print Network [OSTI]

    Hurtado, Marí a de la Luz

    1995-10-01T23:59:59.000Z

    en diversos ámbitos de la vida nacional y mundial, este sistema de producción entró en crisis. El actor y director Fernando Colina impulsó un movimiento renovador, destinado a remecer la concepción y las metodologías de la puesta en escena. Quiso... FALL 1995 49 buen ejemplo de la capacidad de gestión cultural desarrollada por el Teatro, capaz de aunar los recursos financieros, las voluntades y la capacidad de producción de una creación de esta envergadura. Por cierto, el gran trabajo realizado...

  17. Dos comunicaciones.

    E-Print Network [OSTI]

    Dí az, Jorge

    1970-10-01T23:59:59.000Z

    Uruguay): 1) La existencia del llamado "teatro independiente." Existen en estos países grupos semipro- fesionales que funcionan en locales propios de reducidos aforos (entre 80 y 180 butacas) y cuyos montajes tienen costos reducidos y gran rigor... artístico. En estos pequeños centros de experimentación teatral aparecen dramaturgos como Osvaldo Dragún, Carlos Gorostiza, Mauricio Rosencof, Jaime Silva, etc. 2) El interés creciente del público en apoyar una literatura dramática propia. Este público...

  18. ENERGIA DE L'OCE`A Energia de les ones

    E-Print Network [OSTI]

    Batiste, Oriol

    . #12;ENERGIA T`ERMICA OCE`ANICA El mar acumula energia solar a gran escala (1/4 de l'energia que arrivaENERGIA DE L'OCE`A · Energia de les ones · Energia de les marees · Energia t`ermica oce`anic · Energia de les corrents oce`aniques #12;ENERGIA DE LES ONES En algunes zones 40-70 kW/m Aig¨ues profundes

  19. Study of solar and other unknown anti-neutrino fluxes with Borexino at LNGS

    E-Print Network [OSTI]

    G. Bellini; Borexino Collaboration

    2010-09-30T23:59:59.000Z

    We report on the search for anti-neutrinos of yet unknown origin with the Borexino detector at the Laboratori Nazionali del Gran Sasso. In particular, a hypothetical anti-neutrino flux from the Sun is investigated. Anti-neutrinos are detected through the neutron inverse $\\beta$ decay reaction in a large liquid organic scintillator target. We set a new upper limit for a hypothetical solar $\\bar{\

  20. Festivales de teatro en America.

    E-Print Network [OSTI]

    Castillo, Susana D.

    1974-10-01T23:59:59.000Z

    (CENTRO LIBRE DE EXPERIMENTA CIÓN TEATRAL Y ARTÍSTICA), de México: Azotea Fantoche/Laboratorio Katarsis La Calle Mascarones Nopalera Zopilote Vale mencionar en párrafo aparte el TEATRO AMBULANTE DE PUEBLA, MEXICO que causó gran impacto en el..., para una obra de tan atrevida concepción, hacían falta también nuevos actores que Santana aún no ha logrado formar. La actuación—dedicada y voluntariosa—de 40 integrantes del grupo de la Universidad del Zulia no logró proyectar todo el impacto de la...

  1. thE Erc grantEEs 2010 / 2011 ERC Grantees 2010 / 2011 1

    E-Print Network [OSTI]

    Blatt, Rainer

    #12;ExcEllEnt thE Erc grantEEs 2010 / 2011 #12;#12;ERC Grantees 2010 / 2011 1 The erc granTees 2010 The erc #12;2 ERC Grantees 2010 / 2011 a truly european success story F ive years after its launch TöchTerle Austrian Federal Minister for Science and Research #12;ERC Grantees 2010 / 2011 3 The erc

  2. El teatro mexicano y la provincia

    E-Print Network [OSTI]

    Schmidhuber, Guillermo

    1985-04-01T23:59:59.000Z

    SPRING 1985 23 El teatro mexicano y la provincia Guillermo Schmidhuber de la Mora La provincia mexicana es geografía vista desde una gran ciudad, es una división territorial que sigue viviendo la moral y las costumbres pertenecientes a los... mexicano en 1938 cuando el mismo Rodolfo Usigli por primera vez crea un microcosmos llamado "Allende,"2 {Hum inde, de la parte de allá, un buen sinónimo de provincia). Nunca antes un dramaturgo había recreado con tanta vero similitud y vitalidad un...

  3. The Cuban revolution of Fidel Castro viewed from abroad; an annotated bibliography

    E-Print Network [OSTI]

    Fort, Gilberto V.

    1969-01-01T23:59:59.000Z

    of Castro's forces. 9 Giménez, Armando Sierra Maestra; la revolución de Fidel Castro. Traducción directa del Portugués por Carmen Alfaya. Buenos Aires, Editorial Lautaro, 1959. 191p. illus. This is a history of the Cuban revolution which begins... the world to believe. 44 Márquez Sterling, Carlos Historia de Cuba, desde Colón hasta Castro. New York, Las Americas, 1963. 496p. bibliog. A comprehensive general history of Cuba including the Batista and Castro regimes. 45 Suárez Nunez, José El gran...

  4. A inevitabilidade de um sismo em Lisboa, s no se sabendo

    E-Print Network [OSTI]

    Instituto de Sistemas e Robotica

    ALTO RISCO SÍSMICO EM LISBOA · A inevitabilidade de um sismo em Lisboa, só não se sabendo a data.balasteiro@sol.pt O SOL fez uma ronda pela capital, acompanhado por especialistas: em caso de sismo, muitos hospitais prô- i ximo sismo de gran- I des dimensões em I Lisboa - uma certe- z a científica, segun- do os

  5. The Usual and Some Better Shows: Peruvian Theatre in 1981

    E-Print Network [OSTI]

    Luchting, Wolfgang A.

    1982-04-01T23:59:59.000Z

    of certain theaters traditionally devoted to the 'classical' genre" (El observador [inter alia], Lima, 12/29/81). The AFP-survey men tions as the most interesting productions Ultimo round by Venezuelan Rodolfo Santana, La señorita de Tacna by Peruvian... of the group and the playwright J. Rivera Saavedra; (4) celebrating the International Year of the Physically Handicapped, Osvaldo Cattone gave us Mark Medoffs Hijos de un Dios menor [Teatro Marsano]; (5) El gran des chave [Teatro Larco; cf. supra]." When...

  6. Combining ability of yield components and agronomic characteristics among selected Sorghum bicolor (L.) Moench inbreds

    E-Print Network [OSTI]

    Smith, Leslie Kay

    1986-01-01T23:59:59.000Z

    parent which produces large seeded hybr ds According to the analysis of variance, gra'n yield did not appear to be significantly affe ted by female general con hiring ability (GCA i or spec' fic combining ab' 1' ty (SCA) . Female az'o male GCA... effects and SCA effects were significant for 300-seed weight, seeds per panicle, days to anthesis, plant height, panicle lencth, exsertion, and threshing percentage. In most cases the interact or. witl years was also important. GCA effects for yield...

  7. Trpljenje nedolžnih in iskanje besede (od)rešitve v dramatiki Stanka Majcna

    E-Print Network [OSTI]

    Gržan, Karel

    2009-02-01T23:59:59.000Z

    —??114??— Trpljenje nedolžnih in iskanje besede (od)rešitve v dramatiki Stanka Majcna karel gržan Sladka Gora 11, SI – 3240 Šmarje pri Jelšah, grzank@gmail.com Prispevek je prikaz soo?anja Stanka Majcna s trpe?imi, ob katerih se ?uti osebno... besede (od)rešitve v dramatiki Stanka Majcna napredek: iz leta v leto je posameznik dobival nove pravice, beda množic se ni zdela ve? nepremagljiva. Sociologi in znanstveniki so tekmovali, da bi po- magali proletariatu do ?im bolj zdravega in sre?nejšega...

  8. Uranium in the Oatman Creek granite of Central Texas and its economic potential 

    E-Print Network [OSTI]

    Conrad, Curtis Paul

    1982-01-01T23:59:59.000Z

    potential uranium source. Th1s study focuses on an 80 acre outcrop of the Oatman Creek granite known as Bear Mountain, in Gillespie County, Texas. The gran1te is a medium-grained, gray to pink rock. Nodal analysis indicates the composit1on 1s 35. 5... economically feasible because of the relatively low concentration of uranium in most igneous rocks. Recent studies ot uranium have been confined largely to the origin and development of uranium deposits in sedimentary rocks, namely sandstones. In the futur e...

  9. César Rengifo y el teatro venezolano

    E-Print Network [OSTI]

    Paternina Rí os, Zoila

    1999-04-01T23:59:59.000Z

    local, con un marcado afán por encontrar una forma expresiva que lo identifique con lo nacional. VI. Teatro criollo Descendiente directo del teatro costumbrista, se ubica en las primeras cuatro décadas del presente siglo. Recibe la influencia de los... muralismo" (T. VI. p. 450). Llegó al país con la intención de sacar el arte del museo y dirigirlo al pueblo, esto es, de la pintura de salón pasar al mural. Pero las condiciones no se dieron hasta 1954-1955, cuando realizó su gran mural-mosaico Amalivaca...

  10. Theatre Seasons and Festivals

    E-Print Network [OSTI]

    1969-10-01T23:59:59.000Z

    clásicos. Como se ve el año, en estos trimestres, tiene una gran proporción de autores peruanos representados, lo cual, en cierto modo, es un buen indicio de pre ocupación por lo nacional. Fuera de los festivales citados destaca la puesta al aire libre.... La otra noticia es la obtención de una bolsa de viaje de $500 otorgada al Centro Peruano de Teatro por el Instituto Internacional de Teatro que recae por concurso en el joven actor y director Homero Rivera del Carpió, del grupo de Homero Teatro de...

  11. Clearing Debris from Land (Spanish)

    E-Print Network [OSTI]

    McFarland, Mark L.

    2007-10-08T23:59:59.000Z

    ?an determinarse las prioridades para la remoci?n de escombros de la tierra seg?n las siguientes pautas: ? Uso y valor del terreno: Despejar las calles y veredas para permitir que los veh?culos de emergencia circulen libremente. En pasturas, retire cualquier... posible, ate un rastrillo en el frente de una buld?zer. Esto deja pasar gran parte del suelo a trav?s de los dientes, eliminando as? mont?culos de tierra no deseados ? Quite los tocones. Si utiliza una m?quina excavadora, deje tocones de 6 a 10 pies de...

  12. Determination of Free Acid by Standard Addition with Potassium Thiocyanate as Complexant

    SciTech Connect (OSTI)

    Baumann, E.W.

    2001-05-29T23:59:59.000Z

    A method is described for determination of free acid in solutions containing the hydrolyzable ions Al (III), Cr(III), Fe(III), Hg(II), Ni(II), Th(IV), and U(VI). The concentration of the sample is calculated either by solving three simultaneous Nernst equations, by the Gran plot procedure, or by means of a microprocessor pH meter. Molar concentrations of metal ion up to 2.5 times that of the acid can be tolerated. The method has been applied to analysis of nuclear processing solutions that contain Pu(III), in addition to the ions listed above.

  13. Economic analysis of the Stiles Farm: a linear programming approach

    E-Print Network [OSTI]

    Barreyro, Hector Ramon

    1971-01-01T23:59:59.000Z

    cotton allotrent; 1, 033. 5 ac. & X (ll) For feed crain base; 1, 498 ac. & X In the case of' objective function two' the acreace restriction equations are: (12) . -. 'or effecti. v cottcn allotment; 1, 033. 5 ac. & X + X 7 (13) 7 :"or dc:. stic... cotton alloi~~t; 671. 77 ac. & X (14) =or cotton diverted acres; 310. 00 ac. & X + X (15) (16) :-or feed gra'n base; 1, 498. 00 ac. & X3 + X4 + X5 . or dom-. stic feed crain base; 749. 00 ac. & X3 (17) For paic crain sorghum diversion. 499. 00 ac...

  14. Measurement of cosmic muon charge ratio with the Large Volume Detector

    E-Print Network [OSTI]

    N. Yu. Agafonova; M. Aglietta; P. Antonioli; G. Bari; R. Bertoni; V. V. Boyarkin; E. Bressan; G. Bruno; V. L. Dadykin; E. A. Dobrynina; R. I. Enikeev; W. Fulgione; P. Galeotti; M. Garbini; P. L. Ghia; P. Giusti; E. Kemp; A. S. Malgin; B. Miguez; A. Molinario; R. Persiani; I. A. Pless; V. G. Ryasny; O. G. Ryazhskaya; O. Saavedra; G. Sartorelli; M. Selvi; G. C. Trinchero; C. Vigorito; V. F. Yakushev; A. Zichichi

    2015-02-14T23:59:59.000Z

    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.). To reach this depth muons should have the energy at the sea level greater than 1.3 TeV. The muon charge ratio was defined using the number of the decays of stopping positive muons in the LVD iron structure and the decays of positive and negative muons in scintillator. We have obtained the value of the muon charge ratio ${k}$ ${= 1.26 \\pm 0.04(stat) \\pm 0.11(sys)}$.

  15. Double beta decay of ^{64,70}Zn and ^{180,186}W isotopes

    E-Print Network [OSTI]

    D. V. Poda

    2011-12-05T23:59:59.000Z

    The results of the experimental investigations of double beta processes in Zinc and Tungsten isotopes with the help of middle volume (117 g, 168 g and 699 g) low-background ZnWO_4 crystal scintillators are presented. The experiment was carried out in the low-background "DAMA/R&D" set-up at the Gran Sasso National Laboratories of the INFN (Italy) at a depth of \\approx3600 m w.e. The total measurement time exceeds ten thousand hours. New improved half-life limits on double electron capture and electron capture with positron emission in ^{64}Zn have been set: T^{2\

  16. Measurement of low radioactivity background in a high voltage cable by high resolution inductively coupled plasma mass spectrometry

    SciTech Connect (OSTI)

    Vacri, M. L. di; Nisi, S.; Balata, M. [Gran Sasso National Laboratory, Chemistry Service, SS 17bis km 18.910, 67100 Assergi (Aq) (Italy)] [Gran Sasso National Laboratory, Chemistry Service, SS 17bis km 18.910, 67100 Assergi (Aq) (Italy)

    2013-08-08T23:59:59.000Z

    The measurement of naturally occurring low level radioactivity background in a high voltage (HV) cable by high resolution inductively coupled plasma mass spectrometry (HR ICP MS) is presented in this work. The measurements were performed at the Chemistry Service of the Gran Sasso National Laboratory. The contributions to the radioactive background coming from the different components of the heterogeneous material were separated. Based on the mass fraction of the cable, the whole contamination was calculated. The HR ICP MS results were cross-checked by gamma ray spectroscopy analysis that was performed at the low background facility STELLA (Sub Terranean Low Level Assay) of the LNGS underground lab using HPGe detectors.

  17. ICARUS and Status of Liquid Argon Technology

    E-Print Network [OSTI]

    Dorota Stefan

    2011-10-07T23:59:59.000Z

    ICARUS is the largest liquid argon TPC detector ever built (~600 ton LAr mass). It operates underground at the LNGS laboratory in Gran Sasso. It has been smoothly running since summer 2010, collecting data with the CNGS beam and with cosmics. Liquid argon TPCs are really "electronic bubble chamber" providing a completely uniform imaging and calorimetry with unprecedented accuracy on massive volumes. ICARUS is internationally considered as a milestone towards the realization of the next generation of massive detectors (~tens of ktons) for neutrino and rare event physics. Results will be presented on the data collected during 2010 with the detector at LNGS.

  18. Physics Potential and Prospects for CUORE and CUORICINO experiments

    E-Print Network [OSTI]

    I. G. Irastorza; A. Morales; S. Scopel; S. Cebrian

    2002-06-17T23:59:59.000Z

    The CUORE (Cryogenic Underground Observatory for Rare Events) experiment projects to construct and operate an array of 1000 cryogenic thermal detectors of a mass of 760 g each to investigate rare events physics, in particular, double beta decay and non baryonic particle dark matter. A first step towards CUORE is CUORICINO, an array of 56 of such bolometers, currently being installed in the Gran Sasso. In this paper we report the physics potential of both stages of the experiment regarding neutrinoless double beta decay of 130Te, WIMP searches and solar axions.

  19. Roberto J. Payró y el teatro argentino de principios de siglo: Bibliografía general puesta al día

    E-Print Network [OSTI]

    Szmetan, Ricardo

    2000-04-01T23:59:59.000Z

    él, lo cual, sin embargo, no sucede muy a menudo; y cuando se lo hace, a menudo parece ser como al pasar y sin dársele el crédito que su obra y ejemplar conducta merecen. Nace en 1867 en Mercedes, Provincia de Buenos Aires, y se dedica desde joven... que ya una gran ciudad como Buenos Aires tenía, entre los que se destacan los habitacionales y las pobres condiciones de trabajo en general. No es coincidencia que las primeras décadas crearan representantes políticos con ideas socialistas y mismo...

  20. Search for neutrinoless double-beta decay of Ge-76 with GERDA

    E-Print Network [OSTI]

    Karl-Tasso Knoepfle

    2008-10-17T23:59:59.000Z

    GERDA, the GERmanium Detector Array experiment, is a new double beta-decay experiment which is currently under construction in the INFN National Gran Sasso Laboratory (LNGS), Italy. It is implementing a new shielding concept by operating bare Ge diodes - enriched in Ge-76 - in high purity liquid argon supplemented by a water shield. The aim of GERDA is to verify or refute the recent claim of discovery, and, in a second phase, to achieve a two orders of magnitude lower background index than recent experiments. The paper discusses motivation, physics reach, design and status of construction of GERDA, and presents some R&D results.

  1. A nutritional evaluation of sterile and fertile lines of seven sorghum varieties

    E-Print Network [OSTI]

    Hart, Steven P

    1977-01-01T23:59:59.000Z

    sorghum varie- ties were grown: CK 60, Martin, Redlan (grain varieties); Texioca 63wx, CK 60wx (waxy endosperm varieties); Atlas and Neb. 4692 (for- age sorghums). They were harvested at the following five stages of maturity: boot stage, midbloom... & . 05) green matter (GM) and DM than grain or waxy varieties due to greater stem yield and greater leaf yield (P - . 05). Forage varieties were lower in DM due to in- creased proportion of stems and decreased proportion of gra~n. Atlas yielded...

  2. The bipolar diatoms Thalassiosira antarctica Comber and Porosira glacialis (Grun) J2rg.: morphology and autecology of disjunct populations

    E-Print Network [OSTI]

    Villareal, Tracy Alan

    1981-01-01T23:59:59.000Z

    antarctica Karsten Frenguellip 1960 Amh~ ~k'll '' . t' lt (G . )Cl. ~GA E *I d' Ot p Pd ' h d . El I G'' Thalassiosira heshing (Grun. ) Gran A~t*hl hk''Eh Triceratium arcticum Brightwell Rhizosolenia alata f, inermis (Castr. ) Rust. Hasle, 1976... Thalassiosira antarctica Comber P ' El ' I' (G . ) Jd E. If't* h' ~ uf' d d(G . ) E I 10 Expedition (Table 1). Neither author speculated on the origin of the disjunct populations. Hasle and Heimdal (1968) added Thalassiosira antarctica Comber to the list...

  3. Why Range Forage Quality Changes (Spanish) 

    E-Print Network [OSTI]

    Lyons, Robert K.; Machen, Richard V.; Forbes, T. D. A.

    2001-09-10T23:59:59.000Z

    El ganado en pastoreo y la fauna silvestre tienen acceso a una gran diversidad de plantas forrajeras, las cuales var?an en calidad nutri- cional. Los animales obtienen de estas plantas los nutrientes (prote?na, energ?a, vitaminas y min- erales) que... requieren para su crecimiento, pro- ducci?n y reproducci?n. La calidad nutricional depende del tipo de planta, parte de la planta, edad, ?poca de crecimiento, clima, suelo, sitio, carga animal y compuestos antinutricionales. El tipo de animales (bovinos...

  4. LUNA and the Sun

    SciTech Connect (OSTI)

    Broggini, Carlo [INFN, via Marzolo 8, I-35131 Padova (Italy); Collaboration: LUNA Collaboration

    2014-05-09T23:59:59.000Z

    One of the main ingredients of nuclear astrophysics is the knowledge of the thermonu-clear reactions responsible for the stellar luminosity and for the synthesis of the chemical elements. Deep underground in the Gran Sasso Laboratory the cross section of the key reactions of the proton-proton chain and of the Carbon-Nitrogen-Oxygen (CNO) cycle have been measured right down to the energies of astrophysical interest. The main results obtained in the past 20 years are reviewed and their influence on our understanding of the properties of the neutrino and the Sun is discussed.

  5. Why Range Forage Quality Changes (Spanish)

    E-Print Network [OSTI]

    Lyons, Robert K.; Machen, Richard V.; Forbes, T. D. A.

    2001-09-10T23:59:59.000Z

    ?n Experimental Agr?cola de Texas, El Sistema Universitario Texas A&M. E-99S 7-01 animales seleccionan ciertas partes de las plantas, el an?lisis de las plantas completas en general no es un buen indicador de la calidad de la dieta de los animales. Edad de las...El ganado en pastoreo y la fauna silvestre tienen acceso a una gran diversidad de plantas forrajeras, las cuales var?an en calidad nutri- cional. Los animales obtienen de estas plantas los nutrientes (prote?na, energ?a, vitaminas y min- erales) que...

  6. Teatro en Buenos Aires, julio del 2000

    E-Print Network [OSTI]

    Persino, Marí a Silvina

    2001-10-01T23:59:59.000Z

    sostenidas por el gobierno cobran una admisión cuyo valor ronda el de una entrada de cine, y muchas veces con la opción de un día a mitad de precio. Claro que la contrapartida es un sistema que apenas se sostiene: durante el mes de julio, los actores de... representar han logrado con El amateur un espectáculo de gran calidad. El escenario vacío del comienzo se irá poblando con el transcurso de la obra pero no más que de una bicicleta profesional y un soporte fijo sobre el que el ciclista creará la ilusión de...

  7. The Baroque, the grotesque, and social criticism in the Buscon and La Hora de Todos of Quevedo: El Barroco, lo grotesco, y la critica social en el Buscon y La Hora de Todos de Quevedo

    E-Print Network [OSTI]

    Carrero, Norma I.

    1993-01-01T23:59:59.000Z

    un inmenso numero de obras de una calidad excelente en su gran mayoria. Es un perfodo en el que han tenido magni'fica expresi6n todos los gdneros dramkticos: comedia y tragedia, sainete y drama, teatro filos6fico y teo16gico; y denuo de la comedia... cultura de Quevedo rebasa el nivel de sus contemporkneos. "En sus obras, don Francisco aborda los temas y los gdneros mls diversos y, a veces, mks contradictorios hasta el fin de sus dias. Por el voluxnen y calidad, los escritos de Quevedo ocupan una de...

  8. The Coldest Cubic Meter in the Known Universe

    E-Print Network [OSTI]

    Ouellet, Jonathan

    2014-01-01T23:59:59.000Z

    CUORE is a 741 kg array of TeO2 bolometers that will search for the neutrinoless double beta decay of 130Te. The detector is being constructed at the Laboratori Nazionali del Gran Sasso in Italy, where it will begin taking data in 2015. The CUORE cryostat will cool several metric tonnes of material to below 1 K and the CUORE detector itself will operate at a typical temperature of 10 mK. At this temperature, the CUORE detector will be the coldest contiguous cubic meter in the known Universe.

  9. A simulation-based study of the neutron backgrounds for NaI dark matter experiments

    E-Print Network [OSTI]

    Jeon, Eunju

    2015-01-01T23:59:59.000Z

    Among the direct search experiments for weakly interacting massive particle (WIMP) dark matter, the DAMA experiment observed an annual modulation signal interpreted as WIMP interactions with a significance of 9.2$\\sigma$. Recently, Jonathan Davis claimed that the DAMA modulation may be interpreted on the basis of the neutron scattering events induced by the muons and neutrinos together. We tried to simulate the neutron backgrounds at the Gran Sasso and Yangyang laboratory with and without the polyethylene shielding to quantify the effects of the ambient neutrons on the direct detection experiments based on the crystals.

  10. The bipolar diatoms Thalassiosira antarctica Comber and Porosira glacialis (Grun) J2rg.: morphology and autecology of disjunct populations 

    E-Print Network [OSTI]

    Villareal, Tracy Alan

    1981-01-01T23:59:59.000Z

    antarctica Karsten Frenguellip 1960 Amh~ ~k'll '' . t' lt (G . )Cl. ~GA E *I d' Ot p Pd ' h d . El I G'' Thalassiosira heshing (Grun. ) Gran A~t*hl hk''Eh Triceratium arcticum Brightwell Rhizosolenia alata f, inermis (Castr. ) Rust. Hasle, 1976... Thalassiosira antarctica Comber P ' El ' I' (G . ) Jd E. If't* h' ~ uf' d d(G . ) E I 10 Expedition (Table 1). Neither author speculated on the origin of the disjunct populations. Hasle and Heimdal (1968) added Thalassiosira antarctica Comber to the list...

  11. Detection of a small shift in a broad distribution

    E-Print Network [OSTI]

    Bernd A. Berg

    2014-09-05T23:59:59.000Z

    Statistical methods for the extraction of a small shift in broad data distributions are examined by means of Monte Carlo simulations. This work was originally motivated by the CERN neutrino beam to Gran Sasso (CNGS) experiment for which the OPERA detector collaboration reported a time shift in a broad distribution with an accuracy of $\\pm 7.8\\,$ns, while the fluctuation of the average time turns with $\\pm 23.8\\,$ns out to be much larger. Although the physical result of a big shift has been withdrawn, statistical methods that make an identification in a broad distribution with such a small error possible remain of interest.

  12. Sic et non en el Libro de buen amor

    E-Print Network [OSTI]

    Hinton, Melvin

    1999-01-01T23:59:59.000Z

    . Si durante gran parte de la Edad Media, a pesar de cualquier dureza que se acostumbra asociar con lo medieval, el hombre humilde vivia en armonia con su medio ambiente (Bishop 266-67), cuando llegamos al siglo catorce, e incluso antes, encontramos...). La prosperidad economica aumento el numero de personas que disponian del tiempo libre para especular acerca de su suerte dentro del cosmos y de los medios materiales para disfrutar el ocio (Bishop 279-80). Puesto que las capas superiores de la...

  13. México: Lope, transa y dramaturgia

    E-Print Network [OSTI]

    Pé rez Quitt, Ricardo

    1998-10-01T23:59:59.000Z

    mexicanos ha rebasado cualquier expectativa de ficción, en un sólo día podemos experimentar en México, un sismo de 6.7 grados Richter, o el desalojo en nuestro lugar de trabajo para salvar la integridad por una supuesta bomba terrorista del ejército... sismo que desapareció gran parte del centro de la ciudad de México. Al respecto de esta obra, Gonzalo Valdês Medellín apunta: El pivote, el núcleo que genera la voluntad expositiva de Pérez Quitt sin duda lo da ese tono rebelde e iconoclasta que...

  14. Grand Rapids Public Util Comm | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluating AGeothermal/Exploration <GlacialGolden SpreadGomtiofGraham CountyGranGrand

  15. Search for Neutrinoless Double Beta Decay with the CUORE experiment

    SciTech Connect (OSTI)

    Gorla, P. [Laboratori Nazionali del Gran Sasso-INFN, S.S. 17 bis, km 18-910 67010 Assergi (Italy)

    2009-12-17T23:59:59.000Z

    CUORE is a next generation experiment aimed at the detection of neutrinoless Double Beta Decay of the nuclide {sup 130}Te. The experiment, which will take place in the Gran Sasso National Laboratory (Italy), will look for this rare decay using the macrobolometric technique with a prospected array of 988 detectors. Each bolometer will be constituted by a 5x5x5 cm{sup 3} TeO{sub 2} crystal, for a total mass of about 200 kg of {sup 130}Te, and will be maintained at a temperature of 10 mK. CUORE will probe the effective mass of the neutrino with a sensitivity of a few tens of meV. If an excess of counts are observed above background at the 2.5 MeV corresponding to the Q-value of the decay, CUORE will answer several questions that are still open in the field of neutrino physics, such as the determination of the particle's Majorana nature and of the absolute mass scale. A prototype for CUORE in Gran Sasso, named CUORICINO, has just closed after five years proving its importance as a stand-alone experiment.

  16. CUORE: An Experiment to Investigate for Neutrinoless Double Beta Decay by Cooling 750 kg of TeO2 Crystals at 10mK

    SciTech Connect (OSTI)

    Beeman, J.; Dolinski, M.; Gutierrez, T. D.; Maruyama, R.; Smith, A. R.; Xu, N. [Lawrence Berkeley National Laboratory, Berkeley, CA 94720 (United States); Haller, E. E. [Lawrence Berkeley National Laboratory, Berkeley, CA 94720 (United States); Dep. of Material Science and Engineering, University of California, Berkeley CA 94720 (United States); Giuliani, A.; Pedretti, M.; Sangiorgio, S. [Dipartimento di Scienze Chi., Fis. e Mat. dell'Universita dell'Insubria, Sez. INFN di Milano, 22100 Como (Italy); Barucci, M.; Olivieri, E.; Risegari, L.; Ventura, G. [Dipartimento di Fisica dell'Universita di Firenze, sez. INFN di Firenze, 50125 Florence (Italy); Balata, M.; Bucci, C.; Nisi, S. [Laboratori Nazionali del Gran Sasso, INFN, 67010 Assergi (L'Aquila) (Italy); Palmieri, V. [Laboratori Nazionali di Legnaro INFN, Via Romea 4, 35020 Legnaro (Padova) (Italy); Waard, A. de [Kamerlingh Onnes Laboratory, Leiden University, 2300 RA Leiden (Netherlands); Norman, E. B. [Lawrence Livermore National Laboratory, Livermore, California, CA 94550 (United States)] (and others)

    2006-09-07T23:59:59.000Z

    CUORE (Cryogenic Underground Observatory for Rare Events) is an experiment proposed to infer the effective Majorana mass of the electron neutrino from measurements on neutrinoless double beta decay (0{nu}DBD). The goal of CUORE is to achieve a background rate in the range 0.001 to 0.01 counts/keV/kg/y at the 0{nu}DBD transition energy of 130Te (2528 keV). The proposed experiment, to be mounted in the underground Gran Sasso INFN National Laboratory, Italy, is realized by cooling about 1000 TeO2 bolometers, of 750 g each, at a temperature of 10mK. We will describe the experiment, to be cooled by an extremely powerful dilution refrigerator, operating with no liquid helium, and the main experimental features designed to assure the predicted sensitivity. We present moreover the last results of a small scale (40.7 kg) 0{nu}DBD experiment carried on in the Gran Sasso Laboratory (CUORICINO)

  17. Myth and catastrophic reality: using cosmogonic mythology to identify cosmic impacts and massive plinian eruptions in holocene South America.

    SciTech Connect (OSTI)

    Masse, W. B. (William Bruce)

    2004-01-01T23:59:59.000Z

    Major natural catastrophes (e.g., 'universal' floods, fire, darkness, and sky falling down) are prominently reflected in traditional South American creation myths, cosmology, religion, and worldview. We are now beginning to recognize that cosmogonic myths represent a rich and largely untapped data set concerning the most dramatic natural events and processes experienced by each cultural group during the past several thousand years. Observational details regarding specific catastrophes are encoded in myth storylines, typically cast in terms of supernatural characters and actions. Not only are the myths amenable to scientific analysis, but also some sets of myths encode multiple catastrophes in meaningful relative chronological order. The present study considers more than 4200 myths, including more than 260 'universal' catastrophe myths from cultural groups throughout South America. These myths are examined in light of available geological, paleoenvironmental, archeological, and documentary evidence. Our analysis reveals three possible ultra-plinian volcanic eruptions, two in Columbia and the other in the Gran Chaco, the latter likely associated with a poorly dated late Holocene eruption of Nuevo Mundo in central Bolivia. Our analysis also identifies a set of traditions likely linked with the well-known Campo del Cielo iron meteorite impact in northern Argentina originally hypothesized to have occurred around 4000 years ago. Intriguingly, these traditions strongly suggest that the Campo del Cielo impact triggered widespread mass fires in the Gran Chaco region and possibly in the Brazilian Highlands. Several other potential cosmic impacts, distinct from Campo del Cielo, are hinted at in the mythology of other locations in South America. The numerous catastrophe myths in the Gran Chaco region exhibit the most coherent chronological sequence of any South American region. The sequence begins with a 'Great Flood,' by far the most widespread catastrophe myth in South America, typically represented as the beginning of our modern world. The great flood is followed 'many generations' later by the 'Great Fire' (hypothesized as the Campo del Cielo impact) with the 'Great Darkness' and 'sky falling down' (hypothesized as the Nuevo Mundo eruption) being the most recent catastrophe, occurring 'many generations' after the great fire. We draw upon the physical record to suggest rough calendrical dates for these witnessed catastrophic events.

  18. Radioactive contamination of BaF2 crystal scintillator

    E-Print Network [OSTI]

    Polischuk, O G; Bernabei, R; Cappella, F; Caracciolo, V; Cerulli, R; Di Marco, A; Danevich, F A; Incicchitti, A; Poda, D V; Tretyak, V I

    2013-01-01T23:59:59.000Z

    Barium fluoride (BaF$_2$) crystal scintillators are promising detectors to search for double beta decay processes in $^{130}$Ba ($Q_{2{\\beta}}$ = 2619(3) keV) and $^{132}$Ba ($Q_{2{\\beta}}$ = 844(1) keV). The $^{130}$Ba isotope is of particular interest because of the indications on 2${\\beta}$ decay found in two geochemical experiments. The radioactive contamination of BaF$_2$ scintillation crystal with mass of 1.714 kg was measured over 113.4 hours in a low-background DAMA/R&D set-up deep underground (3600 m w.e.) at the Gran Sasso National Laboratories of INFN (LNGS, Italy). The half-life of $^{212}$Po (present in the crystal scintillator due to contamination by radium) was estimated as $T_{1/2}$ = 298.8 $\\pm$ 0.8(stat.) $\\pm$ 1.4(syst.) ns by analysis of the events pulse profiles.

  19. First results of the experiment to search for double beta decay of 106Cd with 106CdWO4 crystal scintillator in coincidence with four crystals HPGe detector

    E-Print Network [OSTI]

    Tretyak, V I; Bernabei, R; Brudanin, V B; Cappella, F; Caracciolo, V; Cerulli, R; Chernyak, D M; Danevich, F A; d'Angelo, S; Incicchitti, A; Laubenstein, M; Mokina, V M; Poda, D V; Polischuk, O G; Podviyanuk, R B; Tupitsyna, I A

    2013-01-01T23:59:59.000Z

    An experiment to search for double beta processes in 106Cd by using cadmium tungstate crystal scintillator enriched in 106Cd (106CdWO4) in coincidence with the four crystals HPGe detector GeMulti is in progress at the STELLA facility of the Gran Sasso underground laboratory of INFN (Italy). The 106CdWO4 scintillator is viewed by a low-background photomultiplier tube through a lead tungstate crystal light-guide produced from deeply purified archaeological lead to suppress gamma quanta from the photomultiplier tube. Here we report the first results of the experiment after 3233 hours of the data taking. A few new improved limits on double beta processes in 106Cd are obtained, in particular T1/2(2nuECb+) > 8.4e20 yr at 90% C.L.

  20. Nuclear Processes at Solar Energy

    E-Print Network [OSTI]

    Carlo Broggini

    2003-08-29T23:59:59.000Z

    LUNA, Laboratory for Underground Nuclear Astrophysics at Gran Sasso, is measuring fusion cross sections down to the energy of the nucleosynthesis inside stars. Outstanding results obtained up to now are the cross-section measurements within the Gamow peak of the Sun of $^{3}He(^{3}He,2p)^{4}He$ and the $D(p,\\gamma)^{3}He$. The former plays a big role in the proton-proton chain, largely affecting the calculated solar neutrino luminosity, whereas the latter is the reaction that rules the proto-star life during the pre-main sequence phase. The implications of such measurements will be discussed. Preliminary results obtained last year on the study of $^{14}N(p,\\gamma)^{15}O$, the slowest reaction of the CNO cycle, will also be shown.

  1. Recent Borexino results and prospects for the near future

    E-Print Network [OSTI]

    D. D'Angelo; G. Bellini; J. Benziger; D. Bick; G. Bonfini; M. Buizza Avanzini; B. Caccianiga; L. Cadonati; F. Calaprice; P. Cavalcante; A. Chavarria; A. Chepurnov; S. Davini; A. Derbin; A. Empl; A. Etenko; F. von Feilitzsch; K. Fomenko; D. Franco; C. Galbiati; S. Gazzana; C. Ghiano; M. Giammarchi; M. Goeger-Neff; A. Goretti; L. Grandi; C. Hagner; E. Hungerford; Aldo Ianni; Andrea Ianni; V. Kobychev; D. Korablev; G. Korga; D. Kryn; M. Laubenstein; B. Lehnert; T. Lewke; E. Litvinovich; F. Lombardi; P. Lombardi; L. Ludhova; G. Lukyanchenko; I. Machulin; S. Manecki; W. Maneschg; G. Manuzio; Q. Meindl; E. Meroni; L. Miramonti; M. Misiaszek; P. Mosteiro; V. Muratova; L. Oberauer; M. Obolensky; F. Ortica; K. Otis; M. Pallavicini; L. Papp; L. Perasso; S. Perasso; A. Pocar; G. Ranucci; A. Razeto; A. Re; A. Romani; N. Rossi; R. Saldanha; C. Salvo; S. Schoenert; H. Simgen; M. Skorokhvatov; O. Smirnov; A. Sotnikov; S. Sukhotin; Y. Suvorov; R. Tartaglia; G. Testera; D. Vignaud; R. B. Vogelaar; J. Winter; M. Wojcik; A. Wright; M. Wurm; J. Xu; O. Zaimidoroga; S. Zavatarelli; K. Zuber; G. Zuzel

    2014-05-30T23:59:59.000Z

    The Borexino experiment, located in the Gran Sasso National Laboratory, is an organic liquid scintillator detector conceived for the real time spectroscopy of low energy solar neutrinos. The data taking campaign phase I (2007 - 2010) has allowed the first independent measurements of 7Be, 8B and pep fluxes as well as the first measurement of anti-neutrinos from the earth. After a purification of the scintillator, Borexino is now in phase II since 2011. We review here the recent results achieved during 2013, concerning the seasonal modulation in the 7Be signal, the study of cosmogenic backgrounds and the updated measurement of geo-neutrinos. We also review the upcoming measurements from phase II data (pp, pep, CNO) and the project SOX devoted to the study of sterile neutrinos via the use of a 51Cr neutrino source and a 144Ce-144Pr antineutrino source placed in close proximity of the active material.

  2. Preparation and characterisation of isotopically enriched Ta$_2$O$_5$ targets for nuclear astrophysics studies

    E-Print Network [OSTI]

    A. Caciolli; D. A. Scott; A. Di Leva; A. Formicola; M. Aliotta; M. Anders; A. Bellini; D. Bemmerer; C. Broggini; M. Campeggio; P. Corvisiero; R. Depalo; Z. Elekes; Zs. Fülöp; G. Gervino; A. Guglielmetti; C. Gustavino; Gy. Gyürky; G. Imbriani; M. Junker; M. Marta; R. Menegazzo; E. Napolitani; P. Prati; V. Rigato; V. Roca; C. Rolfs; C. Rossi Alvarez; E. Somorjai; C. Salvo; O. Straniero; F. Strieder; T. Szücs; F. Terrasi; H. P. Trautvetter; D. Trezzi

    2012-10-01T23:59:59.000Z

    The direct measurement of reaction cross sections at astrophysical energies often requires the use of solid targets of known thickness, isotopic composition, and stoichiometry that are able to withstand high beam currents for extended periods of time. Here, we report on the production and characterisation of isotopically enriched Ta$_2$O$_5$ targets for the study of proton-induced reactions at the Laboratory for Underground Nuclear Astrophysics facility of the Laboratori Nazionali del Gran Sasso. The targets were prepared by anodisation of tantalum backings in enriched water (up to 66% in $^{17}$O and up to 96% in $^{18}$O). Special care was devoted to minimising the presence of any contaminants that could induce unwanted background reactions with the beam in the energy region of astrophysical interest. Results from target characterisation measurements are reported, and the conclusions for proton capture measurements with these targets are drawn.

  3. Preparation and characterisation of isotopically enriched Ta$_2$O$_5$ targets for nuclear astrophysics studies

    E-Print Network [OSTI]

    Caciolli, A; Di Leva, A; Formicola, A; Aliotta, M; Anders, M; Bellini, A; Bemmerer, D; Broggini, C; Campeggio, M; Corvisiero, P; Depalo, R; Elekes, Z; Fülöp, Zs; Gervino, G; Guglielmetti, A; Gustavino, C; Gyürky, Gy; Imbriani, G; Junker, M; Marta, M; Menegazzo, R; Napolitani, E; Prati, P; Rigato, V; Roca, V; Rolfs, C; Alvarez, C Rossi; Somorjai, E; Salvo, C; Straniero, O; Strieder, F; Szücs, T; Terrasi, F; Trautvetter, H P; Trezzi, D

    2012-01-01T23:59:59.000Z

    The direct measurement of reaction cross sections at astrophysical energies often requires the use of solid targets of known thickness, isotopic composition, and stoichiometry that are able to withstand high beam currents for extended periods of time. Here, we report on the production and characterisation of isotopically enriched Ta$_2$O$_5$ targets for the study of proton-induced reactions at the Laboratory for Underground Nuclear Astrophysics facility of the Laboratori Nazionali del Gran Sasso. The targets were prepared by anodisation of tantalum backings in enriched water (up to 66% in $^{17}$O and up to 96% in $^{18}$O). Special care was devoted to minimising the presence of any contaminants that could induce unwanted background reactions with the beam in the energy region of astrophysical interest. Results from target characterisation measurements are reported, and the conclusions for proton capture measurements with these targets are drawn.

  4. The 3He(alpha,gamma)7Be S-factor at solar energies: the prompt gamma experiment at LUNA

    E-Print Network [OSTI]

    H. Costantini; D. Bemmerer; F. Confortola; A. Formicola; Gy. Gyürky; P. Bezzon; R. Bonetti; C. Broggini; P. Corvisiero; Z. Elekes; Zs. Fülöp; G. Gervino; A. Guglielmetti; C. Gustavino; G. Imbriani; M. Junker; M. Laubenstein; A. Lemut; B. Limata; V. Lozza; M. Marta; R. Menegazzo; P. Prati; V. Roca; C. Rolfs; C. Rossi Alvarez; E. Somorjai; O. Straniero; F. Strieder; F. Terrasi; H. P. Trautvetter

    2008-09-30T23:59:59.000Z

    The 3He(alpha,gamma)7Be process is a key reaction in both Big-Bang nucleosynthesis and p-p chain of Hydrogen Burning in Stars. A new measurement of the 3He(alpha,gamma)7Be cross section has been performed at the INFN Gran Sasso underground laboratory by both the activation and the prompt gamma detection methods. The present work reports full details of the prompt gamma detection experiment, focusing on the determination of the systematic uncertainty. The final data, including activation measurements at LUNA, are compared with the results of the last generation experiments and two different theoretical models are used to obtain the S-factor at solar energies.

  5. The Cross Section of 3He(3He,2p)4He measured at Solar Energies

    E-Print Network [OSTI]

    The LUNA Collaboration; M. Junker; A. D'Alessandro; S. Zavatarelli; C. Arpesella; E. Bellotti; C. Broggini; P. Corvisiero; G. Fiorentini; A. Fubini; G. Gervino; U. Greife; C. Gustavino; J. Lambert; P. Prati; W. S. Rodney; C. Rolfs; F. Strieder; H. P. Trautvetter; D. Zahnow

    1998-02-06T23:59:59.000Z

    We report on the results of the \\hethet\\ experiment at the underground accelerator facility LUNA (Gran Sasso). For the first time the lowest projectile energies utilized for the cross section measurement correspond to energies below the center of the solar Gamow peak ($E_{\\rm 0}$=22 keV). The data provide no evidence for the existence of a hypothetical resonance in the energy range investigated. Although no extrapolation is needed anymore (except for energies at the low-energy tail of the Gamow peak), the data must be corrected for the effects of electron screening, clearly observed the first time for the \\hethet\\ reaction. The effects are however larger than expected and not understood, leading presently to the largest uncertainty on the quoted $S_{\\rm b}(E_{\\rm 0})$ value for bare nuclides (=5.40 MeV b).

  6. Science and Technology of BOREXINO: A Real Time Detector for Low Energy Solar Neutrinos SOLAR NEUTRINOS

    E-Print Network [OSTI]

    Borexino Collaboration; G. Alimonti

    2000-12-11T23:59:59.000Z

    BOREXINO, a real-time device for low energy neutrino spectroscopy is nearing completion of construction in the underground laboratories at Gran Sasso, Italy (LNGS). The experiment's goal is the direct measurement of the flux of 7Be solar neutrinos of all flavors via neutrino-electron scattering in an ultra-pure scintillation liquid. Seeded by a series of innovations which were brought to fruition by large scale operation of a 4-ton test detector at LNGS, a new technology has been developed for BOREXINO. It enables sub-MeV solar neutrino spectroscopy for the first time. This paper describes the design of BOREXINO, the various facilities essential to its operation, its spectroscopic and background suppression capabilities and a prognosis of the impact of its results towards resolving the solar neutrino problem. BOREXINO will also address several other frontier questions in particle physics, astrophysics and geophysics.

  7. Borexino: A real time liquid scintillator detector for low energy solar neutrino study

    E-Print Network [OSTI]

    Lino Miramonti

    2002-06-25T23:59:59.000Z

    Borexino is a large unsegmented calorimeter featuring 300 tons of liquid scintillator, contained in a 8.5 meter nylon vessel, viewed by 2200 PMTs. The main goal of Borexino is the study, in real time, of low energy solar neutrinos, and in particular, the monoenergetic neutrinos coming from $^7Be$, which is one of the missing links on the solar neutrino problem. The achievement of high radiopurity level, in the order of $10^{-16} g/g$ of U/Th equivalent, necessary to the detection of the low energy component of the solar neutrino flux, was proved in the Borexino prototype: the Counting Test Facility. The detector is located underground in the Laboratori Nazionali del Gran Sasso in the center of Italy at 3500 meter water equivalent depth. In this paper the science and technology of Borexino are reviewed and its main capabilities are presented.

  8. Preliminary study of feasibility of an experiment looking for excited state double beta transitions in Tin

    E-Print Network [OSTI]

    Das, Soumik; Raina, P K; Singh, A K; Rath, P K; Cappella, F; Cerulli, R; Laubenstein, M; Belli, P; Bernabei, R

    2015-01-01T23:59:59.000Z

    A first attempt to study the feasibility of an experiment to search for double beta decay in $^{124}$Sn and $^{112}$Sn was carried out by using ultra-low background HPGe detector (244 cm$^{3}$) inside the Gran Sasso National Laboratory (LNGS) of the INFN (Italy). A small sample of natural Sn was examined for 2367.5 h. The radioactive contamination of the sample has been estimated. The data has also been considered to calculate the present sensitivity for the proposed search; half-life limits $\\sim$ $10^{17} - 10^{18}$ years for $\\beta^{+}$EC and EC-EC processes in $^{112}$Sn and $\\sim$ $10^{18}$ years for $\\beta^{-}\\beta^{-}$ transition in $^{124}$Sn were measured. In the last section of the paper the enhancement of the sensitivity for a proposed experiment with larger mass to reach theoretically estimated values of half-lives is discussed.

  9. First search for double beta decay of platinum by ultra-low background HP Ge gamma spectrometry

    E-Print Network [OSTI]

    P. Belli; R. Bernabei; F. Cappella; R. Cerulli; F. A. Danevich; A. Di Marco; A. Incicchitti; M. Laubenstein; S. S. Nagorny; S. Nisi; O. G. Polischuk; V. I. Tretyak

    2011-04-29T23:59:59.000Z

    A search for double beta processes in 190Pt and 198Pt was realized with the help of ultra-low background HP Ge 468 cm^3 gamma spectrometer in the underground Gran Sasso National Laboratories of the INFN (Italy). After 1815 h of data taking with 42.5 g platinum sample, T_{1/2} limits on 2beta processes in 190Pt (\\epsilon\\beta^+ and 2\\epsilon) have been established on the level of 10^{14}-10^{16} yr, 3 to 4 orders of magnitude higher than those known previously. In particular, a possible resonant double electron capture in 190Pt was restricted on the level of 2.9 \\times 10^{16} yr at 90% C.L. In addition, T_{1/2} limit on 2 beta^- decay of 198Pt (2\

  10. Search for 2? decays of 96Ru and 104Ru by ultra-low background HPGe gamma spectrometry at LNGS: final results

    E-Print Network [OSTI]

    P. Belli; R. Bernabei; F. Cappella; R. Cerulli; F. A. Danevich; S. d'Angelo; A. Incicchitti; G. P. Kovtun; N. G. Kovtun; M. Laubenstein; D. V. Poda; O. G. Polischuk; A. P. Shcherban; D. A. Solopikhin; J. Suhonen; V. I. Tretyak

    2013-02-28T23:59:59.000Z

    An experiment to search for double beta decay processes in 96Ru and 104Ru, which are accompanied by gamma rays, has been realized in the underground Gran Sasso National Laboratories of the I.N.F.N. (Italy). Ruthenium samples with masses of about (0.5-0.7) kg were measured with the help of ultra-low background high purity Ge gamma ray spectrometry. After 2162 h of data taking the samples were deeply purified to reduce the internal contamination of 40K. The last part of the data has been accumulated over 5479 h. New improved half life limits on 2\\beta+/\\epsilon \\beta+/2\\epsilon\\ processes in 96Ru have been established on the level of 10^{20} yr, in particular for decays to the ground state of 96Mo: T1/2(2\

  11. Final results of an experiment to search for 2beta processes in zinc and tungsten with the help of radiopure ZnWO4 crystal scintillators

    E-Print Network [OSTI]

    P. Belli; R. Bernabei; F. Cappella; R. Cerulli; F. A. Danevich; S. d'Angelo; A. Incicchitti; V. V. Kobychev; D. V. Poda; V. I. Tretyak

    2011-10-18T23:59:59.000Z

    A search for the double beta decay of zinc and tungsten isotopes has been performed with the help of radiopure ZnWO4 crystal scintillators (0.1-0.7 kg) at the Gran Sasso National Laboratories of the INFN. The total exposure of the low background measurements is 0.529 kg yr. New improved half-life limits on the double beta decay modes of 64Zn, 70Zn, 180W, and 186W have been established at the level of 10^{18}-10^{21} yr. In particular, limits on double electron capture and electron capture with positron emission in 64Zn have been set: T_{1/2}(2\

  12. Search for double beta decay of Zinc and Tungsten with the help of low-background ZnWO4 crystal scintillators

    E-Print Network [OSTI]

    P. Belli; R. Bernabei; F. Cappella; R. Cerulli; F. A. Danevich; B. V. Grinyov; A. Incicchitti; V. V. Kobychev; V. M. Mokina; S. S. Nagorny; L. L. Nagornaya; S. Nisi; F. Nozzoli; D. V. Poda; D. Prosperi; V. I. Tretyak; S. S. Yurchenko

    2008-11-14T23:59:59.000Z

    Double beta processes in 64-Zn, 70-Zn, 180-W, and 186-W have been searched for with the help of large volume (0.1-0.7 kg) low background ZnWO4 crystal scintillators at the Gran Sasso National Laboratories of the INFN. Total time of measurements exceeds 10 thousands hours. New improved half-life limits on double electron capture and electron capture with positron emission in 64-Zn have been set, in particular (all the limits are at 90% C.L.): T1/2(0nu2EC)> 1.1e20 yr, T1/2(2nuECbeta+)>7.0e20 yr, and T1/2(0nuECbeta+)>4.3e20 yr. The different modes of double beta processes in 70-Zn, 180-W, and 186-W have been restricted at the level of 1e17-1e20 yr.

  13. Spectroscopy of Solar Neutrinos

    E-Print Network [OSTI]

    Michael Wurm; Franz von Feilitzsch; Marianne Goeger-Neff; Tobias Lachenmaier; Timo Lewke; Quirin Meindl; Randoplh Moellenberg; Lothar Oberauer; Walter Potzel; Marc Tippmann; Christoph Traunsteiner; Juergen Winter

    2010-04-06T23:59:59.000Z

    In the last years, liquid-scintillator detectors have opened a new window for the observation of low-energetic astrophysical neutrino sources. In 2007, the solar neutrino experiment Borexino began its data-taking in the Gran Sasso underground laboratory. High energy resolution and excellent radioactive background conditions in the detector allow the first-time spectroscopic measurement of solar neutrinos in the sub-MeV energy regime. The experimental results of the Beryllium-7 neutrino flux measurements as well as the prospects for the detection of solar Boron-8, pep and CNO neutrinos are presented in the context of the currently discussed ambiguities in solar metallicity. In addition, the potential of the future SNO+ and LENA experiments for high-precision solar neutrino spectroscopy will be outlined.

  14. Limits on spin-dependent WIMP-nucleon cross-sections from the XENON10 experiment

    E-Print Network [OSTI]

    J. Angle; E. Aprile; F. Arneodo; L. Baudis; A. Bernstein; A. Bolozdynya; P. Brusov; L. C. C. Coelho; C. E. Dahl; L. DeViveiros; A. D. Ferella; L. M. P. Fernandes; S. Fiorucci; R. J. Gaitskell; K. L. Giboni; R. Gomez; R. Hasty; L. Kastens; J. Kwong; J. A. M. Lopes; N. Madden; A. Manalaysay; A. Manzur; D. N. McKinsey; M. E. Monzani; K. Ni; U. Oberlack; J. Orboeck; G. Plante; R. Santorelli; J. M. F. dos Santos; P. Shagin; T. Shutt; P. Sorensen; S. Schulte; C. Winant; M. Yamashita; for the XENON10 Collaboration

    2008-09-10T23:59:59.000Z

    XENON10 is an experiment to directly detect weakly interacting massive particle (WIMPs), which may comprise the bulk of the non-baryonic dark matter in our Universe. We report new results for spin-dependent WIMP-nucleon interactions with 129-Xe and 131-Xe from 58.6 live-days of operation at the Laboratori Nazionali del Gran Sasso (LNGS). Based on the non-observation of a WIMP signal in 5.4 kg of fiducial liquid xenon mass, we exclude previously unexplored regions in the theoretically allowed parameter space for neutralinos. We also exclude a heavy Majorana neutrino with a mass in the range of 10 GeV -2 TeV as a dark matter candidate under standard assumptions for its density and distribution in the galactic halo.

  15. Measurement of 25Mg(p; gamma)26Al resonance strengths via gamma spectrometry

    E-Print Network [OSTI]

    A. Formicola; A. Best; G. Imbriani; M. Junker; D. Bemmerer; R. Bonetti; C. Broggini; A. Caciolli; F. Confortola; P. Corvisiero; H. Costantini; Z. Elekes; Zs Fulop; G. Gervino; A. Guglielmetti; Gy Gyurky; C. Gustavino; A. Lemut; B. Limata; M. Marta; C. Mazzocchi; R. Menegazzo; P. Prati; V. Roca; C. Rolfs; C. Rossi Alvarez; E. Somorjai; O. Straniero; F. Strieder; F. Terrasi; H. P. Trautvetter

    2007-10-23T23:59:59.000Z

    The COMPTEL instrument performed the first mapping of the 1.809 MeV photons in the Galaxy, triggering considerable interest in determing the sources of interstellar 26Al. The predicted 26Al is too low compared to the observation, for a better understanding more accurate rates for the 25Mg(p; gamma)26Al reaction are required. The 25Mg(p;gamma)26Al reaction has been investigated at the resonances at Er= 745; 418; 374; 304 keV at Ruhr-Universitat-Bochum using a Tandem accelerator and a 4piNaI detector. In addition the resonance at Er = 189 keV has been measured deep underground laboratory at Laboratori Nazionali del Gran Sasso, exploiting the strong suppression of cosmic background. This low resonance has been studied with the 400 kV LUNA accelerator and a HPGe detector. The preliminary results of the resonance strengths will be reported.

  16. Search for 2\\beta\\ decays of 96Ru and 104Ru by ultra-low background HPGe gamma spectrometry at LNGS: final results

    E-Print Network [OSTI]

    Belli, P; Cappella, F; Cerulli, R; Danevich, F A; d'Angelo, S; Incicchitti, A; Kovtun, G P; Kovtun, N G; Laubenstein, M; Poda, D V; Polischuk, O G; Shcherban, A P; Solopikhin, D A; Suhonen, J; Tretyak, V I

    2013-01-01T23:59:59.000Z

    An experiment to search for double beta decay processes in 96Ru and 104Ru, which are accompanied by gamma rays, has been realized in the underground Gran Sasso National Laboratories of the I.N.F.N. (Italy). Ruthenium samples with masses of about (0.5-0.7) kg were measured with the help of ultra-low background high purity Ge gamma ray spectrometry. After 2162 h of data taking the samples were deeply purified to reduce the internal contamination of 40K. The last part of the data has been accumulated over 5479 h. New improved half life limits on 2\\beta+/\\epsilon \\beta+/2\\epsilon\\ processes in 96Ru have been established on the level of 10^{20} yr, in particular for decays to the ground state of 96Mo: T1/2(2\

  17. Measurement of 25Mg(p; gamma)26Al resonance strengths via gamma spectrometry

    E-Print Network [OSTI]

    Formicola, A; Imbriani, G; Junker, M; Bemmerer, D; Bonetti, R; Broggini, C; Caciolli, A; Confortola, F; Corvisiero, P; Costantini, H; Elekes, Z; Fülöp, Z; Gervino, G; Guglielmetti, A; Gyurky, Gy; Gustavino, C; Lemut, A; Limata, B; Marta, M; Mazzocchi, C; Menegazzo, R; Prati, P; Roca, V; Rolfs, C; Alvarez, C Rossi; Somorjai, E; Straniero, O; Strieder, F; Terrasi, F; Trautvetter, H P

    2007-01-01T23:59:59.000Z

    The COMPTEL instrument performed the first mapping of the 1.809 MeV photons in the Galaxy, triggering considerable interest in determing the sources of interstellar 26Al. The predicted 26Al is too low compared to the observation, for a better understanding more accurate rates for the 25Mg(p; gamma)26Al reaction are required. The 25Mg(p;gamma)26Al reaction has been investigated at the resonances at Er= 745; 418; 374; 304 keV at Ruhr-Universitat-Bochum using a Tandem accelerator and a 4piNaI detector. In addition the resonance at Er = 189 keV has been measured deep underground laboratory at Laboratori Nazionali del Gran Sasso, exploiting the strong suppression of cosmic background. This low resonance has been studied with the 400 kV LUNA accelerator and a HPGe detector. The preliminary results of the resonance strengths will be reported.

  18. First search for double beta decay of platinum by ultra-low background HP Ge gamma spectrometry

    E-Print Network [OSTI]

    Belli, P; Cappella, F; Cerulli, R; Danevich, F A; Di Marco, A; Incicchitti, A; Laubenstein, M; Nagorny, S S; Nisi, S; Polischuk, O G; Tretyak, V I

    2011-01-01T23:59:59.000Z

    A search for double beta processes in 190Pt and 198Pt was realized with the help of ultra-low background HP Ge 468 cm^3 gamma spectrometer in the underground Gran Sasso National Laboratories of the INFN (Italy). After 1815 h of data taking with 42.5 g platinum sample, T_{1/2} limits on 2beta processes in 190Pt (\\epsilon\\beta^+ and 2\\epsilon) have been established on the level of 10^{14}-10^{16} yr, 3 to 4 orders of magnitude higher than those known previously. In particular, a possible resonant double electron capture in 190Pt was restricted on the level of 2.9 \\times 10^{16} yr at 90% C.L. In addition, T_{1/2} limit on 2 beta^- decay of 198Pt (2\

  19. The influence of Earth rotation in neutrino speed measurements between CERN and the OPERA detector

    E-Print Network [OSTI]

    Markus G. Kuhn

    2011-10-20T23:59:59.000Z

    The OPERA neutrino experiment at the underground Gran Sasso Laboratory recently reported, in arXiv:1109.4897v1, high-accuracy velocity measurements of neutrinos from the CERN CNGS beam over the 730 km distance between the two laboratories. This raised significant interest, as the observed neutrinos appeared to arrive at the OPERA detector about 60 ns (or equivalently 18 m) earlier than would have been expected if they had traveled at the speed of light, with high statistical significance. As the authors did not indicate whether and how they took into account the Coriolis or Sagnac effect that Earth's rotation has on the (southeastwards traveling) neutrinos, this brief note quantifies this effect. It would explain a 2.2 ns later arrival time.

  20. Measurements of extremely low radioactivity levels in BOREXINO

    E-Print Network [OSTI]

    Arpesella, C

    2001-01-01T23:59:59.000Z

    The techniques researched, developed and applied towards the measurement of radioisotope concentrations at ultra-low levels in the real-time solar neutrino experiment BOREXINO at Gran Sasso are presented and illustrated with specific results of widespread interest. We report the use of low-level germanium gamma spectrometry, low-level miniaturized gas proportional counters and low background scintillation detectors developed in solar neutrino research. Each now sets records in its field. We additionally describe our techniques of radiochemical ultra-pure, few atom manipulations and extractions. Forefront measurements also result from the powerful combination of neutron activation and low-level counting. Finally, with our techniques and commercially available mass spectrometry and atomic absorption spectroscopy, new low-level detection limits for isotopes of interest are obtained.

  1. Low background detector with enriched 116CdWO4 crystal scintillators to search for double beta decay of 116Cd

    E-Print Network [OSTI]

    Barabash, A S; Bernabei, R; Boiko, R S; Cappella, F; Caracciolo, V; Chernyak, D M; Cerulli, R; Danevich, F A; Di Vacri, M L; Dossovitskiy, A E; Galashov, E N; Incicchitti, A; Kobychev, V V; Konovalov, S I; Kovtun, G P; Kudovbenko, V M; Laubenstein, M; Mikhlin, A L; Nisi, S; Poda, D V; Podviyanuk, R B; Polischuk, O G; Shcherban, A P; Shlegel, V N; Solopikhin, D A; Stenin, Yu G; Tretyak, V I; Umatov, V I; Vasiliev, Ya V; Virich, V D

    2011-01-01T23:59:59.000Z

    A cadmium tungstate crystal boule enriched in $^{116}$Cd to 82% with mass of 1868 g was grown by the low-thermal-gradient Czochralski technique. The isotopic composition of cadmium and the trace contamination of the crystal were estimated by High Resolution Inductively Coupled Plasma Mass-Spectrometry. The crystal scintillators produced from the boule were subjected to characterization that included measurements of transmittance and energy resolution. A low background scintillation detector with two $^{116}$CdWO$_4$ crystal scintillators (586 g and 589 g) was developed. The detector was running over 1727 h deep underground at the Gran Sasso National Laboratories of the INFN (Italy), which allowed to estimate the radioactive contamination of the enriched crystal scintillators. The radiopurity of a third $^{116}$CdWO$_4$ sample (326 g) was tested with the help of ultra-low background high purity germanium $\\gamma$ detector. Monte Carlo simulations of double $\\beta$ processes in $^{116}$Cd were used to estimate ...

  2. Measurements of extremely low radioactivity levels in BOREXINO

    E-Print Network [OSTI]

    Borexino Collaboration; C. Arpesella

    2001-09-20T23:59:59.000Z

    The techniques researched, developed and applied towards the measurement of radioisotope concentrations at ultra-low levels in the real-time solar neutrino experiment BOREXINO at Gran Sasso are presented and illustrated with specific results of widespread interest. We report the use of low-level germanium gamma spectrometry, low-level miniaturized gas proportional counters and low background scintillation detectors developed in solar neutrino research. Each now sets records in its field. We additionally describe our techniques of radiochemical ultra-pure, few atom manipulations and extractions. Forefront measurements also result from the powerful combination of neutron activation and low-level counting. Finally, with our techniques and commercially available mass spectrometry and atomic absorption spectroscopy, new low-level detection limits for isotopes of interest are obtained.

  3. Preliminary study of feasibility of an experiment looking for excited state double beta transitions in Tin

    E-Print Network [OSTI]

    Soumik Das; S. K. Ghorui; P. K. Raina; A. K. Singh; P. K. Rath; F. Cappella; R. Cerulli; M. Laubenstein; P. Belli; R. Bernabei

    2015-02-09T23:59:59.000Z

    A first attempt to study the feasibility of an experiment to search for double beta decay in $^{124}$Sn and $^{112}$Sn was carried out by using ultra-low background HPGe detector (244 cm$^{3}$) inside the Gran Sasso National Laboratory (LNGS) of the INFN (Italy). A small sample of natural Sn was examined for 2367.5 h. The radioactive contamination of the sample has been estimated. The data has also been considered to calculate the present sensitivity for the proposed search; half-life limits $\\sim$ $10^{17} - 10^{18}$ years for $\\beta^{+}$EC and EC-EC processes in $^{112}$Sn and $\\sim$ $10^{18}$ years for $\\beta^{-}\\beta^{-}$ transition in $^{124}$Sn were measured. In the last section of the paper the enhancement of the sensitivity for a proposed experiment with larger mass to reach theoretically estimated values of half-lives is discussed.

  4. Status of the CUORE and results from the CUORE-0 neutrinoless double beta decay experiments

    E-Print Network [OSTI]

    Sisti, M; Avignone, F T; Azzolini, O; Balata, M; Banks, T I; Bari, G; Beeman, J; Bellini, F; Bersani, A; Biassoni, M; Brofferio, C; Bucci, C; Cai, X Z; Camacho, A; Caminata, A; Canonica, L; Cao, X G; Capelli, S; Cappelli, L; Carbone, L; Cardani, L; Casali, N; Cassina, L; Chiesa, D; Chott, N; Clemenza, M; Copello, S; Cosmelli, C; Cremonesi, O; Creswick, R J; Cushman, J S; Dafinei, I; Dally, A; Datskov, V; Dell'Oro, S; Deninno, M; Di Domizio, S; di Vacri, M L; Drobizhev, A; Ejzak, L; Fang, D Q; Farach, H A; Faverzani, M; Fernandes, G; Ferri, E; Ferroni, F; Fiorini, E; Franceschi, M A; Freedman, S J; Fujikawa, B K; Giachero, A; Gironi, L; Giuliani, A; Gorla, P; Gotti, C; Gutierrez, T D; Haller, E E; Han, K; Heeger, K M; Hennings-Yeomans, R; Hickerson, K P; Huang, H Z; Kadel, R; Keppel, G; Kolomensky, Yu G; Li, Y L; Ligi, C; Lim, K E; Liu, X; Ma, Y G; Maiano, C; Maino, M; Martinez, M; Maruyama, R H; Mei, Y; Moggi, N; Morganti, S; Napolitano, T; Nastasi, M; Nisi, S; Nones, C; Norman, E B; Nucciotti, A; O'Donnell, T; Orio, F; Orlandi, D; Ouellet, J L; Pagliarone, C E; Pallavicini, M; Palmieri, V; Pattavina, L; Pavan, M; Pedretti, M; Pessina, G; Pettinacci, V; Piperno, G; Pira, C; Pirro, S; Pozzi, S; Previtali, E; Rosenfeld, C; Rusconi, C; Sala, E; Sangiorgio, S; Scielzo, N D; Smith, A R; Taffarello, L; Tenconi, M; Terranova, F; Tian, W D; Tomei, C; Trentalange, S; Ventura, G; Vignati, M; Wang, B S; Wang, H W; Wielgus, L; Wilson, J; Winslow, L A; Wise, T; Woodcraft, A; Zanotti, L; Zarra, C; Zhang, G Q; Zhu, B X; Zucchelli, S

    2015-01-01T23:59:59.000Z

    CUORE is a 741 kg array of TeO2 bolometers for the search of neutrinoless double beta decay of 130Te. The detector is being constructed at the Laboratori Nazionali del Gran Sasso, Italy, where it will start taking data in 2015. If the target background of 0.01 counts/keV/kg/y will be reached, in five years of data taking CUORE will have a 1 sigma half life sensitivity of 10E26 y. CUORE-0 is a smaller experiment constructed to test and demonstrate the performances expected for CUORE. The detector is a single tower of 52 CUORE-like bolometers that started taking data in spring 2013. The status and perspectives of CUORE will be discussed, and the first CUORE-0 data will be presented.

  5. GERDA, a GERmanium Detector Array for the search for neutrinoless {beta}{beta} decay in 76Ge

    SciTech Connect (OSTI)

    Pandola, L.; Tomei, C. [INFN, Laboratori Nazionali del Gran Sasso, S.S. 17 bis km 18.910, 67010 Assergi (AQ) (Italy)

    2006-07-11T23:59:59.000Z

    The GERDA project, searching for neutrinoless double beta-decay of 76Ge with enriched germanium detectors submerged in a cryogenic bath, has been approved for installation at the Gran Sasso National Laboratory (LNGS), Italy. The GERDA technique is aiming at a dramatic reduction of the background due to radioactive contaminations of the materials surrounding the detectors. This will lead to a sensitivity of about 1026 years on the half-life of neutrinoless double beta decay. Already in the first phase of the experiment, GERDA will be able to investigate with high statistical significance the claimed evidence for neutrinoless double beta decay of 76Ge based on the data of the Heidelberg-Moscow experiment.

  6. Performance of a large TeO2 crystal as a cryogenic bolometer in searching for neutrinoless double beta decay

    E-Print Network [OSTI]

    L. Cardani; L. Gironi; J. W. Beeman; I. Dafinei; Z. Ge; G. Pessina; S. Pirro; Y. Zhu

    2011-06-03T23:59:59.000Z

    Bolometers are ideal devices in the search for neutrinoless Double Beta Decay. Enlarging the mass of individual detectors would simplify the construction of a large experiment, but would also decrease the background per unit mass induced by alpha-emitters located close to the surfaces and background arising from external and internal gamma's. We present the very promising results obtained with a 2.13 kg TeO2 crystal. This bolometer, cooled down to a temperature of 10.5 mK in a dilution refrigerator located deep underground in the Gran Sasso National Laboratories, represents the largest thermal detector ever operated. The detector exhibited an energy resolution spanning a range from 3.9 keV (at 145 keV) to 7.8 keV (at the 2615 gamma-line of 208Tl) FWHM. We discuss the decrease in the background per unit mass that can be achieved increasing the mass of a bolometer.

  7. The Search for Neutrinoless Double Beta Decay in CUORE

    E-Print Network [OSTI]

    L. M. Ejzak; for the CUORE Collaboration

    2009-10-15T23:59:59.000Z

    Understanding the nature of neutrino masses will require physics beyond the long-standing Standard Model of particle physics. Neutrinoless double beta decay experiments like the Cryogenic Underground Observatory for Rare Events (CUORE) are uniquely suited for probing the remaining mysteries of neutrino mass, particularly the question of the neutrino's Majorana nature. CUORE will be a next-generation experiment at the Laboratori Nazionali del Gran Sasso in Italy; it will consist of an array of 988 TeO2 detector crystals operated at ~10 mK, following the bolometric technique established by the Cuoricino experiment. It will look for the energy signal produced by the theoretically-predicted neutrinoless double beta decay in Te-130, and therefore reliable energy calibration of the detector is crucial to the experiment's success. We will present the most recent results from Cuoricino and discuss the current status of the CUORE project, with a particular emphasis on the development of the calibration system.

  8. Direct Dark Matter Search with the CRESST-II Experiment

    E-Print Network [OSTI]

    ,

    2015-01-01T23:59:59.000Z

    The quest for the particle nature of dark matter is one of the big open questions of modern physics. The CRESST-II experiment, located at the Gran Sasso laboratory in Italy, is optimised for the detection of the elastic scattering of dark matter particles with ordinary matter. We present the result obtained with an improved detector setup with increased radiopurity and enhanced background rejection. The limit obtained in the so-called low mass region between one and three GeV/c2 is at the present among the best limits obtained for direct dark matter experiments. In addition we give an outlook of the future potential for direct dark matter detection using further improved CRESST CaWO4 cryogenic detectors.

  9. A Semi-automatic Search for Giant Radio Galaxy Candidates and their Radio-Optical Follow-up

    E-Print Network [OSTI]

    Santiago-Bautista, I del C; Andernach, H; Coziol, R; Torres-Papaqui, J P; Andrade, E F Jimenez; Plauchu-Frayn, I; Momjian, E

    2015-01-01T23:59:59.000Z

    We present results of a search for giant radio galaxies (GRGs) with a projected largest linear size in excess of 1 Mpc. We designed a computational algorithm to identify contiguous emission regions, large and elongated enough to serve as GRG candidates, and applied it to the entire 1.4-GHz NRAO VLA Sky survey (NVSS). In a subsequent visual inspection of 1000 such regions we discovered 15 new GRGs, as well as many other candidate GRGs, some of them previously reported, for which no redshift was known. Our follow-up spectroscopy of 25 of the brighter hosts using two 2.1-m telescopes in Mexico, and four fainter hosts with the 10.4-m Gran Telescopio Canarias (GTC), yielded another 24 GRGs. We also obtained higher-resolution radio images with the Karl G. Jansky Very Large Array for GRG candidates with inconclusive radio structures in NVSS.

  10. Agujeros de Gusano en Gravedad (2+1)

    E-Print Network [OSTI]

    Rubio, Eduard Alexis Larranaga

    2007-01-01T23:59:59.000Z

    Traversable wormholes are objects that present a lot of interest in the last years because of their geometric features and their relation with exotic matter. In this paper we presnt a review of the principal characteristics of traversable Morris-Thorne wormholes, their construction proccess and some aspects about the exotic matter that is needed in order to mantain them. Then, we use a junction proccess to obatin two specific wormhole solutions in the (2+1) gravity formalism with negative cosmological constant. The obtained solutions represent wormholes with an external spacetime correspondient to the BTZ black hole solution. We also show that exotic matter is needed to mantain these wormholes. ----- Los agujeros de gusano atravesables son objetos que presentan un gran interes en la actualidad debido a sus caracteristicas geometricas y a su relacion con la materia exotica. En el presente trabajo se muestra una revision de las caracteristicas de los agujeros de gusano atravesables al estilo de Morris y Thorne,...

  11. Ann bay lodyans 13 / Se Bryant Freeman ("Tonton Liben") ki pare ti liv sa a

    E-Print Network [OSTI]

    Freeman, Bryant C.

    2000-01-01T23:59:59.000Z

    apral fe le sa a, papa? Papa: Le sa a, se Pari, se manje nan gran restoran, se bwe chanpay, se bel fanm! Pitit: Men, si boul la pa tonbe, papa? Papa: Le sa a, pitit mwen, se lakay, se kasav, se kleren, se manman ou. 8 PAPIYON AK DEMWAZEL Se te... li pre yon fie jon. Tet li foure nan ke fie a, li t ap bwe lawouze ladann, li t ap souse ti poud jon lan. Ti papiyon an te leje, le a te pi leje pase I. Ti papiyon an t ap bat zel li. L6 li fin bwe jouk tan tet li vire ak tout like I te bwe nan...

  12. High sensitivity tests of the Pauli Exclusion Principle with VIP2

    E-Print Network [OSTI]

    Marton, J; Bertolucci, S; Berucci, C; Bragadireanu, M; Cargnelli, M; Curceanu, C; Clozza, A; Di Matteo, S; Egger, J -P; Guaraldo, C; Iliescu, M; Ishiwatari, T; Laubenstein, M; Milotti, E; Pichler, A; Pietreanu, D; Piscicchia, K; Ponta, T; Scordo, A; Shi, H; Sirghi, D L; Sirghi, F; Sperandio, L; Doce, O Vazquez; Widmann, E; Zmeskal, J

    2015-01-01T23:59:59.000Z

    The Pauli Exclusion Principle is one of the most fundamental rules of nature and represents a pillar of modern physics. According to many observations the Pauli Exclusion Principle must be extremely well fulfilled. Nevertheless, numerous experimental investigations were performed to search for a small violation of this principle. The VIP experiment at the Gran Sasso underground laboratory searched for Pauli-forbidden X-ray transitions in copper atoms using the Ramberg-Snow method and obtained the best limit so far. The follow-up experiment VIP2 is designed to reach even higher sensitivity. It aims to improve the limit by VIP by orders of magnitude. The experimental method, comparison of different PEP tests based on different assumptions and the developments for VIP2 are presented.

  13. Status of the CUORE and results from the CUORE-0 neutrinoless double beta decay experiments

    E-Print Network [OSTI]

    CUORE Collaboration; M. Sisti; D. R. Artusa; F. T. Avignone III; O. Azzolini; M. Balata; T. I. Banks; G. Bari; J. Beeman; F. Bellini; A. Bersani; M. Biassoni; C. Brofferio; C. Bucci; X. Z. Cai; A. Camacho; A. Caminata; L. Canonica; X. G. Cao; S. Capelli; L. Cappelli; L. Carbone; L. Cardani; N. Casali; L. Cassina; D. Chiesa; N. Chott; M. Clemenza; S. Copello; C. Cosmelli; O. Cremonesi; R. J. Creswick; J. S. Cushman; I. Dafinei; A. Dally; V. Datskov; S. Dell'Oro; M. Deninno; S. Di Domizio; M. L. di Vacri; A. Drobizhev; L. Ejzak; D. Q. Fang; H. A. Farach; M. Faverzani; G. Fernandes; E. Ferri; F. Ferroni; E. Fiorini; M. A. Franceschi; S. J. Freedman; B. K. Fujikawa; A. Giachero; L. Gironi; A. Giuliani; P. Gorla; C. Gotti; T. D. Gutierrez; E. E. Haller; K. Han; K. M. Heeger; R. Hennings-Yeomans; K. P. Hickerson; H. Z. Huang; R. Kadel; G. Keppel; Yu. G. Kolomensky; Y. L. Li; C. Ligi; K. E. Lim; X. Liu; Y. G. Ma; C. Maiano; M. Maino; M. Martinez; R. H. Maruyama; Y. Mei; N. Moggi; S. Morganti; T. Napolitano; M. Nastasi; S. Nisi; C. Nones; E. B. Norman; A. Nucciotti; T. O'Donnell; F. Orio; D. Orlandi; J. L. Ouellet; C. E. Pagliarone; M. Pallavicini; V. Palmieri; L. Pattavina; M. Pavan; M. Pedretti; G. Pessina; V. Pettinacci; G. Piperno; C. Pira; S. Pirro; S. Pozzi; E. Previtali; C. Rosenfeld; C. Rusconi; E. Sala; S. Sangiorgio; N. D. Scielzo; A. R. Smith; L. Taffarello; M. Tenconi; F. Terranova; W. D. Tian; C. Tomei; S. Trentalange; G. Ventura; M. Vignati; B. S. Wang; H. W. Wang; L. Wielgus; J. Wilson; L. A. Winslow; T. Wise; A. Woodcraft; L. Zanotti; C. Zarra; G. Q. Zhang; B. X. Zhu; S. Zucchelli

    2015-02-12T23:59:59.000Z

    CUORE is a 741 kg array of TeO2 bolometers for the search of neutrinoless double beta decay of 130Te. The detector is being constructed at the Laboratori Nazionali del Gran Sasso, Italy, where it will start taking data in 2015. If the target background of 0.01 counts/keV/kg/y will be reached, in five years of data taking CUORE will have a 1 sigma half life sensitivity of 10E26 y. CUORE-0 is a smaller experiment constructed to test and demonstrate the performances expected for CUORE. The detector is a single tower of 52 CUORE-like bolometers that started taking data in spring 2013. The status and perspectives of CUORE will be discussed, and the first CUORE-0 data will be presented.

  14. "OPERA superluminal neutrinos explained by spontaneous emission and stimulated absorption"

    E-Print Network [OSTI]

    Rafael Torrealba

    2011-12-05T23:59:59.000Z

    In this work it is shown, that for short 3ns neutrino pulses reported by OPERA, a relativistic shape deforming effect of the neutrino distribution function due to spontaneous emission, produces an earlier arrival of 65.8ns in agreement with the reported 62.1ns\\pm 3.7ns, with a RMS of 16.4ns explaining the apparent superluminal effect. It is also shown, that early arrival of long 10500ns neutrinos pulse to Gran Sasso, by 57.8ns with respect to the speed of light, could be explained by a shape deforming effect due to a combination of stimulated absorption and spontaneous emission, while traveling by the decay tunnel that acts as a LASER tube.

  15. A long baseline RICH with a 27-kiloton water target and radiator for detection of neutrino oscillations

    SciTech Connect (OSTI)

    Ypsilantis, T.; Seguinot, J.; Zichichi, A.

    1997-01-01T23:59:59.000Z

    A 27 kt water volume is investigated as a target for a long baseline neutrino beam from CERN to Gran Sasso. Charged secondaries from the neutrino interactions produce Cherenkov photons in water which are imaged as rings by a spherical mirror. The photon detector elements are 14 400 photomultipliers (PM`s) of 127 mm diameter or 3600 HPD`s of 250 mm diameter with single photon sensitivity. A coincidence signal of about 300 pixel elements in time with the SPS beam starts readout in bins of 1 ns over a period of 128 ns. Momentum, direction, and velocity of hadrons and mucons are determined from the width, center, and radius of the rings, respectively. Momentum is measured if multiple scattering dominates the ring width, as is the case for most of the particles of interest. Momentum, direction, and velocity of hadrons and muons are determined from the width, center, and radius of the rings, respectively. Momentum is measured if multiple scattering dominates the ring width, as is the case for most of the particles of interest. Momentum resolutions of 1-10%, mass resolutions of 5-50 MeV, and direction resolutions of < 1 mrad are achievable. Thresholds in water for muons, pions, kaons, and protons are 0.12, 0.16, 0.55, and 1.05 GeV/c, respectively. Electrons and gammas can be measured with energy resolution {sigma}{sub E}/E{approx}8.5%/{radical}E(GeV) and with direction resolution {approx} 1 mrad. The detector can be sited either inside a Gran Sasso tunnel or above ground because it is directional and the SPS beam is pulsed; thus the rejection of cosmic ray background is excellent.

  16. A search for lithium in metal-poor L dwarfs

    E-Print Network [OSTI]

    Lodieu, N; Pavlenko, Y; Rebolo, R

    2015-01-01T23:59:59.000Z

    The aim of the project is to search for lithium in absorption at 6707.8 Angstroms to constrain the nature and the mass of the brightest low-metallicity L-type dwarfs (refered to as L subdwarfs) identified in large-scale surveys. We obtained low- to intermediate-resolution (R~2500-9000) optical (~560-770 nm) spectra of two mid-L subdwarfs, SDSSJ125637.13-022452.4 (SDSS1256; sdL3.5) and 2MASSJ162620.14+392519.5 (2MASS1626; sdL4) with spectrographs on the European Southern Observatory Very Large Telescope and the Gran Telescopio de Canarias. We report the presence of a feature at the nominal position of the lithium absorption doublet at 6707.8 Angstroms in the spectrum of SDSS1256, with an equivalent width of 66+/-27 Angstroms at 2.4 sigma, which we identify as arising from a CaH molecular transition based on atmosphere models. We do not see any feature at the position of the lithium feature in the spectrum of 2MASS1626. The existence of overlapping molecular absorption sets a confusion detection limit of [Li/H]...

  17. The background in the neutrinoless double beta decay experiment GERDA

    E-Print Network [OSTI]

    Agostini, M; Andreotti, E; Bakalyarov, A M; Balata, M; Barabanov, I; Heider, M Barnabe; Barros, N; Baudis, L; Bauer, C; Becerici-Schmidt, N; Bellotti, E; Belogurov, S; Belyaev, S T; Benato, G; Bettini, A; Bezrukov, L; Bode, T; Brudanin, V; Brugnera, R; Budjas, D; Caldwell, A; Cattadori, C; Chernogorov, A; Cossavella, F; Demidova, E V; Domula, A; Egorov, V; Falkenstein, R; Ferella, A; Freund, K; Frodyma, N; Gangapshev, A; Garfagnini, A; Gotti, C; Grabmayr, P; Gurentsov, V; Gusev, K; Guthikonda, K K; Hampel, W; Hegai, A; Heisel, M; Hemmer, S; Heusser, G; Hofmann, W; Hult, M; Inzhechik, L V; Ioannucci, L; Csathy, J Janicsko; Jochum, J; Junker, M; Kihm, T; Kirpichnikov, I V; Kirsch, A; Klimenko, A; Knoepfle, K T; Kochetov, O; Kornoukhov, V N; Kuzminov, V V; Laubenstein, M; Lazzaro, A; Lebedev, V I; Lehnert, B; Liao, H Y; Lindner, M; Lippi, I; Liu, X; Lubashevskiy, A; Lubsandorzhiev, B; Lutter, G; Macolino, C; Machado, A A; Majorovits, B; Maneschg, W; Nemchenok, I; Nisi, S; O'Shaughnessy, C; Palioselitis, D; Pandola, L; Pelczar, K; Pessina, G; Pullia, A; Riboldi, S; Sada, C; Salathe, M; Schmitt, C; Schreiner, J; Schulz, O; Schwingenheuer, B; Schoenert, S; Shevchik, E; Shirchenko, M; Simgen, H; Smolnikov, A; Stanco, L; Strecker, H; Tarka, M; Ur, C A; Vasenko, A A; Volynets, O; von Sturm, K; Wagner, V; Walter, M; Wegmann, A; Wester, T; Wojcik, M; Yanovich, E; Zavarise, P; Zhitnikov, I; Zhukov, S V; Zinatulina, D; Zuber, K; Zuzel, G

    2014-01-01T23:59:59.000Z

    The GERmanium Detector Array (GERDA) experiment at the Gran Sasso underground laboratory (LNGS) of INFN is searching for neutrinoless double beta decay of 76Ge. The signature of the signal is a monoenergetic peak at 2039 keV, the Q-value of the decay, Q_bb. To avoid bias in the signal search, the present analysis does not consider all those events, that fall in a 40 keV wide region centered around Q_bb. The main parameters needed for the neutrinoless double beta decay analysis are described. A background model was developed to describe the observed energy spectrum. The model contains several contributions, that are expected on the basis of material screening or that are established by the observation of characteristic structures in the energy spectrum. The model predicts a flat energy spectrum for the blinding window around Q_bb with a background index ranging from 17.6 to 23.8*10^{-3} counts/(keV kg yr). A part of the data not considered before has been used to test if the predictions of the background model...

  18. The nuclear and extended infrared emission of the Seyfert galaxy NGC 2992 and the interacting system Arp 245

    E-Print Network [OSTI]

    García-Bernete, I; Acosta-Pulido, J A; Alonso-Herrero, A; Sánchez-Portal, M; Castillo, M; Pereira-Santaella, M; Esquej, P; González-Martín, O; Díaz-Santos, T; Roche, P; Fisher, S; Povi?, M; García, A M Pérez; Valtchanov, I; Packham, C; Levenson, N A

    2015-01-01T23:59:59.000Z

    We present subarcsecond resolution infrared (IR) imaging and mid-IR spectroscopic observations of the Seyfert 1.9 galaxy NGC 2992, obtained with the Gemini North Telescope and the Gran Telescopio CANARIAS (GTC). The N-band image reveals faint extended emission out to ~3 kpc, and the PAH features detected in the GTC/CanariCam 7.5-13 micron spectrum indicate that the bulk of this extended emission is dust heated by star formation. We also report arcsecond resolution MIR and far-IR imaging of the interacting system Arp 245, taken with the Spitzer Space Telescope and the Herschel Space Observatory. Using these data, we obtain nuclear fluxes using different methods and find that we can only recover the nuclear fluxes obtained from the subarcsecond data at 20-25 micron, where the AGN emission dominates. We fitted the nuclear IR spectral energy distribution of NGC 2992, including the GTC/CanariCam nuclear spectrum (~50 pc), with clumpy torus models. We then used the best-fitting torus model to decompose the Spitzer/...

  19. Constraints on the evolutionary mechanisms of massive galaxies since z~1 from their velocity dispersions

    E-Print Network [OSTI]

    de Arriba, L Peralta; Trujillo, I; Falcón-Barroso, J; Tapia, T; Cardiel, N; Gallego, J; Guzmán, R; Hempel, A; Martín-Navarro, I; Pérez-González, P G; Sánchez-Bláquez, P

    2015-01-01T23:59:59.000Z

    Several authors have reported that the dynamical masses of massive compact galaxies (M_star > 10^11 M_sun, r_e ~ 1 kpc), computed as M_dyn = 5.0 sigma_e^2 r_e / G, are lower than their stellar masses M_star. In a previous study from our group, the discrepancy is interpreted as a breakdown of the assumptions of virial equilibrium and homology that underlie the M_dyn determinations. Here we present new spectroscopy of six redshift z~1.0 massive compact ellipticals from the Extended Groth Strip, obtained with the 10.4-m Gran Telescopio Canarias. We obtain velocity dispersions in the range 161 to 340 km s^-1. As found by previous studies of massive compact galaxies, our velocity dispersions are lower than the virial expectation, and all of our galaxies show M_dyn < M_star. Adding data from the literature, we build a sample covering a range of stellar masses and compactness in a narrow redshift range z~1.0. This allows us to exclude systematic effects on the data and evolutionary effects on the galaxy populatio...

  20. Spontaneous Muon Emission during Fission, a New Nuclear Radioactivity

    E-Print Network [OSTI]

    D. B. Ion; M. L. D. Ion; Reveica Ion-Mihai

    2011-01-24T23:59:59.000Z

    In this paper the essential theoretical predictions for the nuclear muonic radioactivity are presented by using a special fission-like model similar with that used in description of the pionic emission during fission. Hence, a fission-like model for the muonic radioactivity takes into account the essential degree of freedom of the system: muon-fissility, muon-fission barrier height, etc. Using this model it was shown that most of the SHE-nuclei lie in the region where the muonic fissility parameters attain their limiting value X=1. Hence, the SHE-region is characterized by the absence of a classical barrier toward spontaneous muon and pion emissions. Numerical estimations on the yields for the natural muonic radioactivities of the transuranium elements as well numerical values for barrier heights are given only for even-even parent nuclei. Some experimental results from LCP-identification emission spectrum are reviewed. Also, the experimental results obtained by Khryachkov et al, using new spectrometer for investigation of ternary nuclear fission, are presented. The OPERA-experiment proposed to perform search for muonic radioactivity from lead nuclei, in the low background conditions offered by the Gran Sasso underground Laboratory (LNGS), is discussed.

  1. Effects of Nitrogen contamination in liquid Argon

    E-Print Network [OSTI]

    R. Acciarri; M. Antonello; B. Baibussinov; M. Baldo-Ceolin; P. Benetti; F. Calaprice; E. Calligarich; M. Cambiaghi; N. Canci; F. Carbonara; F. Cavanna; S. Centro; A. G. Cocco; F. Di Pompeo; G. Fiorillo; C. Galbiati; V. Gallo; L. Grandi; G. Meng; I. Modena; C. Montanari; O. Palamara; L. Pandola; F. Pietropaolo; G. L. Raselli; M. Roncadelli; M. Rossella; C. Rubbia; E. Segreto; A. M. Szelc; S. Ventura; C. Vignoli

    2008-04-08T23:59:59.000Z

    A dedicated test of the effects of Nitrogen contamination in liquid Argon has been performed at the INFN-Gran Sasso Laboratory (LNGS, Italy) within the WArP R&D program. A detector has been designed and assembled for this specific task and connected to a system for the injection of controlled amounts of gaseous Nitrogen into the liquid Argon. Purpose of the test is to detect the reduction of the Ar scintillation light emission as a function of the amount of the Nitrogen contaminant injected in the Argon volume. A wide concentration range, spanning from about 10^-1 ppm up to about 10^3 ppm, has been explored. Measurements have been done with electrons in the energy range of minimum ionizing particles (gamma-conversion from radioactive sources). Source spectra at different Nitrogen contaminations are analyzed, showing sensitive reduction of the scintillation yield at increasing concentrations. The rate constant of the light quenching process induced by Nitrogen in liquid Ar has been found to be k(N2)=0.11 micros^-1 ppm^-1. Direct PMT signals acquisition at high time resolution by fast Waveform recording allowed to extract with high precision the main characteristics of the scintillation light emission in pure and contaminated LAr. In particular, the decreasing behavior in lifetime and relative amplitude of the slow component is found to be appreciable from O(1 ppm) of Nitrogen concentrations.

  2. Environment of the submillimeter-bright massive starburst HFLS3 at $z$$\\sim$6.34

    E-Print Network [OSTI]

    Laporte, N; Calanog, J A; Cooray, A; Wardlow, J L; Bock, J; Bridge, C; Burgarella, D; Bussmann, R S; Cabrera-Lavers, A; Casey, C M; Clements, D L; Conley, A; Farrah, D; Fu, H; Gavazzi, R; González-Solares, E A; Ivison, R J; Faro, B Lo; Ma, B; Magdis, G; Marques-Chaves, R; Martínez-Navajas, P; Oliver, S J; Osage, W A; Riechers, D; Rigopoulou, D; Scott, D; Streblyanska, A; Vieira, J D

    2015-01-01T23:59:59.000Z

    We describe the search for Lyman-break galaxies (LBGs) near the sub-millimeter bright starburst galaxy HFLS3 at $z$$=$6.34 and a study on the environment of this massive galaxy during the end of reionization. We performed two independent selections of LBGs on images obtained with the Gran Telescopio Canarias (GTC) and the Hubble Space Telescope (HST) by combining non-detections in bands blueward of the Lyman-break and color selection. A total of 10 objects fulfilling the LBG selection criteria at $z$$>$5.5 were selected over the 4.54 and 55.5 arcmin$^2$ covered by our HST and GTC images, respectively. The photometric redshift, UV luminosity, and the star-formation rate of these sources were estimated with models of their spectral energy distribution. These $z$$\\sim$6 candidates have physical properties and number densities in agreement with previous results. The UV luminosity function of this field at $z$$\\sim$6 shows no strong evidence for an overdensity of relatively bright objects (m$_{F105W}$$<$25.9) a...

  3. The low-temperature energy calibration system for the CUORE bolometer array

    E-Print Network [OSTI]

    S. Sangiorgio; L. M. Ejzak; K. M. Heeger; R. H. Maruyama; A. Nucciotti; M. Olcese; T. S. Wise; A. L. Woodcraft

    2009-08-03T23:59:59.000Z

    The CUORE experiment will search for neutrinoless double beta decay (0nDBD) of 130Te using an array of 988 TeO_2 bolometers operated at 10 mK in the Laboratori Nazionali del Gran Sasso (Italy). The detector is housed in a large cryogen-free cryostat cooled by pulse tubes and a high-power dilution refrigerator. The TeO_2 bolometers measure the event energies, and a precise and reliable energy calibration is critical for the successful identification of candidate 0nDBD and background events. The detector calibration system under development is based on the insertion of 12 gamma-sources that are able to move under their own weight through a set of guide tubes that route them from deployment boxes on the 300K flange down into position in the detector region inside the cryostat. The CUORE experiment poses stringent requirements on the maximum heat load on the cryostat, material radiopurity, contamination risk and the ability to fully retract the sources during normal data taking. Together with the integration into a unique cryostat, this requires careful design and unconventional solutions. We present the design, challenges, and expected performance of this low-temperature energy calibration system.

  4. Commissioning Run of the CRESST-II Dark Matter Search

    E-Print Network [OSTI]

    G. Angloher; M. Bauer; I. Bavykina; A. Bento; A. Brown; C. Bucci; C. Ciemniak; C. Coppi; G. Deuter; F. von Feilitzsch; D. Hauff; S. Henry; P. Huff; J. Imber; S. Ingleby; C. Isaila; J. Jochum; M. Kiefer; M. Kimmerle; H. Kraus; J. -C. Lanfranchi; R. F. Lang; B. Majorovits; M. Malek; R. McGowan; V. B. Mikhailik; E. Pantic; F. Petricca; S. Pfister; W. Potzel; F. Proebst; W. Rau; S. Roth; K. Rottler; C. Sailer; K. Schaeffner; J. Schmaler; S. Scholl; W. Seidel; L. Stodolsky; A. J. B. Tolhurst; I. Usherov; W. Westphal

    2009-02-16T23:59:59.000Z

    The CRESST cryogenic direct dark matter search at Gran Sasso, searching for WIMPs via nuclear recoil, has been upgraded to CRESST-II by several changes and improvements.We present the results of a commissioning run carried out in 2007. The basic element of CRESST-II is a detector module consisting of a large (~ 300 g) CaWO_4 crystal and a very sensitive smaller (~ 2 g) light detector to detect the scintillation light from the CaWO_4.Information from light-quenching factor studies allows the definition of a region of the energy-light yield plane which corresponds to tungsten recoils. A neutron test is reported which supports the principle of using the light yield to identify the recoiling nucleus. Data obtained with two detector modules for a total exposure of 48 kg-days are presented. Judging by the rate of events in the "all nuclear recoils" acceptance region the apparatus shows a factor ~ten improvement with respect to previous results, which we attribute principally to the presence of the neutron shield. In the "tungsten recoils" acceptance region three events are found, corresponding to a rate of 0.063 per kg-day. Standard assumptions on the dark matter flux, coherent or spin independent interactions,then yield a limit for WIMP-nucleon scattering of 4.8 \\times 10^{-7}pb, at M{WIMP} ~50 GeV.

  5. Experimental and theoretical high energy physics research. [UCLA

    SciTech Connect (OSTI)

    Not Available

    1992-01-01T23:59:59.000Z

    Progress in the various components of the UCLA High-Energy Physics Research program is summarized, including some representative figures and lists of resulting presentations and published papers. Principal efforts were directed at the following: (I) UCLA hadronization model, PEP4/9 e{sup +}e{sup {minus}} analysis, {bar P} decay; (II) ICARUS and astroparticle physics (physics goals, technical progress on electronics, data acquisition, and detector performance, long baseline neutrino beam from CERN to the Gran Sasso and ICARUS, future ICARUS program, and WIMP experiment with xenon), B physics with hadron beams and colliders, high-energy collider physics, and the {phi} factory project; (III) theoretical high-energy physics; (IV) H dibaryon search, search for K{sub L}{sup 0} {yields} {pi}{sup 0}{gamma}{gamma} and {pi}{sup 0}{nu}{bar {nu}}, and detector design and construction for the FNAL-KTeV project; (V) UCLA participation in the experiment CDF at Fermilab; and (VI) VLPC/scintillating fiber R D.

  6. Experimental and theoretical high energy physics research. Annual progress report, September 1, 1991--September 31, 1992

    SciTech Connect (OSTI)

    Not Available

    1992-10-01T23:59:59.000Z

    Progress in the various components of the UCLA High-Energy Physics Research program is summarized, including some representative figures and lists of resulting presentations and published papers. Principal efforts were directed at the following: (I) UCLA hadronization model, PEP4/9 e{sup +}e{sup {minus}} analysis, {bar P} decay; (II) ICARUS and astroparticle physics (physics goals, technical progress on electronics, data acquisition, and detector performance, long baseline neutrino beam from CERN to the Gran Sasso and ICARUS, future ICARUS program, and WIMP experiment with xenon), B physics with hadron beams and colliders, high-energy collider physics, and the {phi} factory project; (III) theoretical high-energy physics; (IV) H dibaryon search, search for K{sub L}{sup 0} {yields} {pi}{sup 0}{gamma}{gamma} and {pi}{sup 0}{nu}{bar {nu}}, and detector design and construction for the FNAL-KTeV project; (V) UCLA participation in the experiment CDF at Fermilab; and (VI) VLPC/scintillating fiber R & D.

  7. CALDER - Neutrinoless double-beta decay identification in TeO$_2$ bolometers with kinetic inductance detectors

    E-Print Network [OSTI]

    E. S. Battistelli; F. Bellini; C. Bucci; M. Calvo; L. Cardani; N. Casali; M. G. Castellano; I. Colantoni; A Coppolecchia; C. Cosmelli; A. Cruciani; P. de Bernardis; S. Di Domizio; A. D'Addabbo; M. Martinez; S. Masi; L. Pagnanini; C. Tomei; M. Vignati

    2015-05-19T23:59:59.000Z

    Next-generation experiments searching for neutrinoless double-beta decay must be sensitive to a Majorana neutrino mass as low as 10 meV. CUORE, an array of 988 TeO$_2$ bolometers being commissioned at Laboratori Nazionali del Gran Sasso in Italy, features an expected sensitivity of 50-130 meV at 90% C.L, that can be improved by removing the background from $\\alpha$ radioactivity. This is possible if, in coincidence with the heat release in a bolometer, the Cherenkov light emitted by the $\\beta$ signal is detected. The amount of light detected is so far limited to only 100 eV, requiring low-noise cryogenic light detectors. The CALDER project (Cryogenic wide-Area Light Detectors with Excellent Resolution) aims at developing a small prototype experiment consisting of TeO$_2$ bolometers coupled to new light detectors based on kinetic inductance detectors. The R&D is focused on the light detectors that could be implemented in a next-generation neutrinoless double-beta decay experiment.

  8. CALDER - Neutrinoless double-beta decay identification in TeO$_2$ bolometers with kinetic inductance detectors

    E-Print Network [OSTI]

    E. S. Battistelli; F. Bellini; M. Calvo; L. Cardani; N. Casali; M. G. Castellano; I. Colantoni; A Coppolecchia; C. Cosmelli; A. Cruciani; P. de Bernardis; S. Di Domizio; A. D'Addabbo; M. Martinez; S. Masi; L. Pagnanini; C. Tomei; M. Vignati

    2015-05-06T23:59:59.000Z

    Next-generation experiments searching for neutrinoless double-beta decay must be sensitive to a Majorana neutrino mass as low as 10 meV. CUORE, an array of 988 TeO$_2$ bolometers being commissioned at Laboratori Nazionali del Gran Sasso in Italy, features an expected sensitivity of 50-130 meV at 90% C.L, that can be improved by removing the background from $\\alpha$ radioactivity. This is possible if, in coincidence with the heat release in a bolometer, the Cherenkov light emitted by the $\\beta$ signal is detected. The amount of light detected is so far limited to only 100 eV, requiring low-noise cryogenic light detectors. The CALDER project (Cryogenic wide-Area Light Detectors with Excellent Resolution) aims at developing a small prototype experiment consisting of TeO$_2$ bolometers coupled to new light detectors based on kinetic inductance detectors. The R&D is focused on the light detectors that could be implemented in a next-generation neutrinoless double-beta decay experiment.

  9. Operation of a GERDA Phase I prototype detector in liquid argon and nitrogen

    E-Print Network [OSTI]

    M. Barnabé Heider; A. Bakalyarov; L. Bezrukov; C. Cattadori; O. Chkvorets; K. Gusev; M. Hult; I. Kirpichnikov; V. Lebedev; G. Marissens; P. Peiffer; S. Schönert; M. Shirchenko; A. Smolnikov; A. Vasenko; S. Vasiliev; S. Zhukov

    2008-12-20T23:59:59.000Z

    The GERDA (GERmanium Detector Array) experiment aiming to search for the neutrinoless double beta decay of 76Ge at the Laboratori Nazionali Del Gran Sasso (LNGS), Italy, will operate bare enriched high-purity germanium (HPGe) detectors in liquid argon. GERDA Phase I will use the enriched diodes from the previous Heidelberg-Moscow (HdM) and IGEX experiments. With the HPGe detectors mounted in a low-mass holder, GERDA aims at an excellent energy resolution and extremely low background. The goal is to check the claim for the neutrinoless double beta decay evidence in the HdM 76Ge experiment within one year of data taking. Before dismounting the enriched diodes from their cryostat, the performance parameters of the HdM and the IGEX detectors have been measured. The diodes have been removed from their cryostats, their dimensions measured and they have been put under va-cuum in a transportation container. They are now being refurbished for GERDA Phase I at Canberra Semiconductor NV. Before operating the enriched diodes, a non-enriched HPGe p-type detector mounted in a low-mass holder is operated in the liquid argon test facility of the GERDA Detector Laboratory (GDL) at LNGS. Since January 2006, the testing of the prototype detector is being carried out in the GDL as well as at the site of the detector manufacturer.

  10. A distributed acquisition system using the VME KAV30 single board computer in a VAXELN environment

    SciTech Connect (OSTI)

    D'Antone, I.; Mandrioli, G.; Matteuzzi, P.; Pavesi, B.; Sanzani, G. (Univ. of Bologna (Italy)); Marini, A.; Ronga, F. (INFN Lab. Nazionali di Frascati (Italy)); Mancarella, G.; Surdo, A. (Univ. of Lecce (Italy))

    1994-02-01T23:59:59.000Z

    MACRO is a large area detector designed to search for rare phenomena in the cosmic radiation (GUT monopoles or supermassive charged penetrating particles), to study the penetrating cosmic ray muons, to detect neutrino bursts originated by gravitational stellar collapses in the galaxy and to perform a survey of cosmic point sources of high energy neutrinos. The detector, located at a depth of about 3,600 meters of water equivalent in the INFN Gran Sasso Laboratory (LNGS), has an acceptance of about 10,000 m[sup 2]sr for an isotropic flux of particles. It consists of plastic streamer tubes, liquid scintillation counters and track-etch detectors arranged in a modular structure, the basic element called ''supermodule'' having dimensions 12 x 12 x 5 m[sup 3]. Presently 6 supermodules are operative and have been taking data since June 1991. Here an acquisition system based on a network (Ethernet/DECNET) of KAV30 VAX processors is described. KAV30 is a VME single board computer based around rt-Vax 300 and running in VAXELN, a Digital Equipment software product for the development of dedicated, real time systems for VAX processors. A central VAX running under the VAX/VMS operating system is used as file server and as an interface of the acquisition system with respect to the user's world.

  11. Search for 14.4 keV solar axions from M1 transition of Fe-57 with CUORE crystals

    E-Print Network [OSTI]

    The Cuore Collaboration; F. Alessandria; R. Ardito; D. R. Artusa; F. T. Avignone III; O. Azzolini; M. Balata; T. I. Banks; G. Bari; J. Beeman; F. Bellini; A. Bersani; M. Biassoni; T. Bloxham; C. Brofferio; C. Bucci; X. Z. Cai; L. Canonica; S. Capelli; L. Carbone; L. Cardani; M. Carrettoni; N. Casali; N. Chott; M. Clemenza; C. Cosmelli; O. Cremonesi; R. J. Creswick; I. Dafinei; A. Dally; V. Datskov; A. De Biasi; M. P. Decowski; M. M. Deninno; S. Di Domizio; M. L. di Vacri; L. Ejzak; R. Faccini; D. Q. Fang; H. A. Farach; E. Ferri; F. Ferroni; E. Fiorini; M. A. Franceschi; S. J. Freedman; B. K. Fujikawa; A. Giachero; L. Gironi; A. Giuliani; J. Goett; P. Gorla; C. Gotti; E. Guardincerri; T. D. Gutierrez; E. E. Haller; K. Han; K. M. Heeger; H. Z. Huang; R. Kadel; K. Kazkaz; G. Keppel; L. Kogler; Yu. G. Kolomensky; D. Lenz; Y. L. Li; C. Ligi; X. Liu; Y. G. Ma; C. Maiano; M. Maino; M. Martinez; R. H. Maruyama; N. Moggi; S. Morganti; T. Napolitano; S. Newman; S. Nisi; C. Nones; E. B. Norman; A. Nucciotti; F. Orio; D. Orlandi; J. L. Ouellet; M. Pallavicini; V. Palmieri; L. Pattavina; M. Pavan; M. Pedretti; G. Pessina; S. Pirro; E. Previtali; V. Rampazzo; F. Rimondi; C. Rosenfeld; C. Rusconi; S. Sangiorgio; N. D. Scielzo; M. Sisti; A. R. Smith; L. Taffarello; M. Tenconi; W. D. Tian; C. Tomei; S. Trentalange; G. Ventura; M. Vignati; B. S. Wang; H. W. Wang; C. A. Whitten Jr.; T. Wise; A. Woodcraft; L. Zanotti; C. Zarra; B. X. Zhu; S. Zucchelli

    2013-04-26T23:59:59.000Z

    We report the results of a search for axions from the 14.4 keV M1 transition from Fe-57 in the core of the sun using the axio-electric e?ect in TeO2 bolometers. The detectors are 5x5x5 cm3 crystals operated at about 10 mK in a facility used to test bolometers for the CUORE experiment at the Laboratori Nazionali del Gran Sasso in Italy. An analysis of 43.65 kg d of data was made using a newly developed low energy trigger which was optimized to reduce the detectors energy threshold. An upper limit of 0.63 c kg-1 d-1 was established at 95% C.L.. From this value, a lower bound at 95% C.L. was placed on the Peccei-Quinn energy scale of fa >= 0.76 10**6 GeV for a value of S=0.55 for the flavor-singlet axial vector matrix element. Bounds are given for the interval 0.15 < S < 0.55.

  12. Sensitivity and Discovery Potential of CUORE to Neutrinoless Double-Beta Decay

    E-Print Network [OSTI]

    F. Alessandria; R. Ardito; D. R. Artusa; F. T. Avignone III; O. Azzolini; M. Balata; T. I. Banks; G. Bari; J. Beeman; F. Bellini; A. Bersani; M. Biassoni; T. Bloxham; C. Brofferio; C. Bucci; X. Z. Cai; L. Canonica; X. Cao; S. Capelli; L. Carbone; L. Cardani; M. Carrettoni; N. Casali; D. Chiesa; N. Chott; M. Clemenza; C. Cosmelli; O. Cremonesi; R. J. Creswick; I. Dafinei; A. Dally; V. Datskov; A. De Biasi; M. M. Deninno; S. Di Domizio; M. L. di Vacri; L. Ejzak; R. Faccini; D. Q. Fang; H. A. Farach; M. Faverzani; G. Fernandes; E. Ferri; F. Ferroni; E. Fiorini; M. A. Franceschi; S. J. Freedman; B. K. Fujikawa; A. Giachero; L. Gironi; A. Giuliani; J. Goett; P. Gorla; C. Gotti; E. Guardincerri; T. D. Gutierrez; E. E. Haller; K. Han; K. M. Heeger; H. Z. Huang; R. Kadel; K. Kazkaz; G. Keppel; L. Kogler; Yu. G. Kolomensky; D. Lenz; Y. L. Li; C. Ligi; X. Liu; Y. G. Ma; C. Maiano; M. Maino; M. Martinez; R. H. Maruyama; Y. Mei; N. Moggi; S. Morganti; T. Napolitano; S. Newman; S. Nisi; C. Nones; E. B. Norman; A. Nucciotti; T. O'Donnell; F. Orio; D. Orlandi; J. L. Ouellet; M. Pallavicini; V. Palmieri; L. Pattavina; M. Pavan; M. Pedretti; G. Pessina; G. Piperno; S. Pirro; E. Previtali; V. Rampazzo; F. Rimondi; C. Rosenfeld; C. Rusconi; E. Sala; S. Sangiorgio; N. D. Scielzo; M. Sisti; A. R. Smith; F. Stivanello; L. Taffarello; M. Tenconi; W. D. Tian; C. Tomei; S. Trentalange; G. Ventura; M. Vignati; B. S. Wang; H. W. Wang; T. Wise; A. Woodcraft; L. Zanotti; C. Zarra; B. X. Zhu; S. Zucchelli

    2013-03-20T23:59:59.000Z

    We present a study of the sensitivity and discovery potential of CUORE, a bolometric double-beta decay experiment under construction at the Laboratori Nazionali del Gran Sasso in Italy. Two approaches to the computation of experimental sensitivity for various background scenarios are presented, and an extension of the sensitivity formulation to the discovery potential case is also discussed. Assuming a background rate of 10^-2 cts/(keV kg y), we find that, after 5 years of live time, CUORE has a 1 sigma sensitivity to the neutrinoless double-beta decay half-life of T_1/2(1 sigma) = 1.6 \\times 10^26 y and thus a potential to probe the effective Majorana neutrino mass down to 40-100 meV; the sensitivity at 1.64 sigma, which corresponds to 90% C.L., will be T_1/2(1.64 sigma) = 9.5 \\times 10^25 y. This range is compared with the claim of observation of neutrinoless double-beta decay in 76Ge and the preferred range of the neutrino mass parameter space from oscillation results.

  13. Feasibility study of the observation of the neutrino accompanied double beta-decay of Ge-76 to the 0+(1) excited state of Se-76 using segmented germanium detectors

    E-Print Network [OSTI]

    K. Kroeninger; L. Pandola; V. Tretyak

    2007-02-13T23:59:59.000Z

    Neutrino accompanied double beta-decay of Ge-76 can populate the ground state and the excited states of Se-76. While the decay to the ground state has been observed with a half-life of 1.74 +0.18 -0.16 10^21 years, decays to the excited states have not yet been observed. Nuclear matrix elements depend on details of the nuclear transitions. A measurement of the half-life of the transition considered here could help to reduce the uncertainties of the calculations of the nuclear matrix element for the neutrinoless double beta decay of Ge-76. This parameter relates the half-life of the process to the effective Majorana neutrino mass. The results of a feasibility study to detect the neutrino accompanied double beta-decay of Ge-76 to the excited states of Se-76 are presented in this paper. Segmented germanium detectors were assumed in this study. Such detectors, enriched in Ge-76 to a level of about 86%, will be deployed in the GERDA experiment located at the INFN Gran Sasso National Laboratory, Italy. It is shown that the decay of Ge-76 to the 1122 keV 0+ level of Se-76 can be observed in GERDA provided that the half-life of the process is in the range favoured by the present calculations which is 7.5 10^21 y to 3.1 10^23 y.

  14. Purification of lanthanides for double beta decay experiments

    SciTech Connect (OSTI)

    Polischuk, O. G. [Institute for Nuclear Research, MSP 03680 Kyiv, Ukraine and INFN, Section of Rome, La Sapienza, I-00185 Rome (Italy)] [Institute for Nuclear Research, MSP 03680 Kyiv, Ukraine and INFN, Section of Rome, La Sapienza, I-00185 Rome (Italy); Barabash, A. S. [Institute of Theoretical and Experimental Physics, 117259 Moscow (Russian Federation)] [Institute of Theoretical and Experimental Physics, 117259 Moscow (Russian Federation); Belli, P. [INFN, Section of Rome Tor Vergata, I-00133 Rome (Italy)] [INFN, Section of Rome Tor Vergata, I-00133 Rome (Italy); Bernabei, R. [INFN, Section of Rome Tor Vergata, I-00133 Rome, Italy and Department of Physics, University of Rome Tor Vergata, I-00133 Rome (Italy)] [INFN, Section of Rome Tor Vergata, I-00133 Rome, Italy and Department of Physics, University of Rome Tor Vergata, I-00133 Rome (Italy); Boiko, R. S.; Danevich, F. A.; Mokina, V. M.; Poda, D. V.; Tretyak, V. I. [Institute for Nuclear Research, MSP 03680 Kyiv (Ukraine)] [Institute for Nuclear Research, MSP 03680 Kyiv (Ukraine); Cappella, F.; Incicchitti, A. [INFN, Section of Rome La Sapienza, I-00185 Rome, Italy and Department of Physics, University of Rome La Sapienza, I-00185 Rome (Italy)] [INFN, Section of Rome La Sapienza, I-00185 Rome, Italy and Department of Physics, University of Rome La Sapienza, I-00185 Rome (Italy); Cerulli, R.; Laubenstein, M.; Nisi, S. [INFN, Gran Sasso National Laboratories, I-67100 Assergi (Aq) (Italy)] [INFN, Gran Sasso National Laboratories, I-67100 Assergi (Aq) (Italy)

    2013-08-08T23:59:59.000Z

    There are several potentially double beta active isotopes among the lanthanide elements. However, even high purity grade lanthanide compounds contain {sup 238}U, {sup 226}Ra and {sup 232,228}Th typically on the level of ? (0.1 - 1) Bq/kg. The liquid-liquid extraction technique was used to remove traces of U, Ra and Th from CeO{sub 2}, Nd{sub 2}O{sub 3} and Gd{sub 2}O{sub 3}. The radioactive contamination of the samples before and after the purification was tested by using ultra-low-background HPGe ? spectrometry at the underground Gran Sasso National Laboratories of the INFN (Italy). After the purification the radioactive contamination of gadolinium oxide by Ra and Th was decreased at least one order of magnitude. The efficiency of the approach to purify cerium oxide from Ra was on same level, while the radioactive contamination of neodymium sample before and after the purification is below the sensitivity of analytical methods. The purification method is much less efficient for chemically very similar radioactive elements like lanthanum, lutetium and actinium. R and D of the methods to remove the pollutions with improved efficiency is in progress.

  15. Radioactive contamination of ZnWO4 crystal scintillators

    E-Print Network [OSTI]

    P. Belli; R. Bernabei; F. Cappella; R. Cerulli; F. A. Danevich; A. M. Dubovik; S. d'Angelo; E. N. Galashov; B. V. Grinyov; A. Incicchitti; V. V. Kobychev; M. Laubenstein; L. L. Nagornaya; F. Nozzoli; D. V. Poda; R. B. Podviyanuk; O. G. Polischuk; D. Prosperi; V. N. Shlegel; V. I. Tretyak; I. A. Tupitsyna; Ya. V. Vasiliev; Yu. Ya. Vostretsov

    2010-09-05T23:59:59.000Z

    The radioactive contamination of ZnWO4 crystal scintillators has been measured deep underground at the Gran Sasso National Laboratory (LNGS) of the INFN in Italy with a total exposure 3197 kg x h. Monte Carlo simulation, time-amplitude and pulse-shape analyses of the data have been applied to estimate the radioactive contamination of the ZnWO4 samples. One of the ZnWO4 crystals has also been tested by ultra-low background gamma spectrometry. The radioactive contaminations of the ZnWO4 samples do not exceed 0.002 -- 0.8 mBq/kg (depending on the radionuclide), the total alpha activity is in the range: 0.2 - 2 mBq/kg. Particular radioactivity, beta active 65Zn and alpha active 180W, has been detected. The effect of the re-crystallization on the radiopurity of the ZnWO4 crystal has been studied. The radioactive contamination of samples of the ceramic details of the set-ups used in the crystals growth has been checked by low background gamma spectrometry. A project scheme on further improvement of the radiopurity level of the ZnWO4 crystal scintillators is briefly addressed.

  16. Radioactive contamination of ZnWO4 crystal scintillators

    E-Print Network [OSTI]

    Belli, P; Cappella, F; Cerulli, R; Danevich, F A; Dubovik, A M; d'Angelo, S; Galashov, E N; Grinyov, B V; Incicchitti, A; Kobychev, V V; Laubenstein, M; Nagornaya, L L; Nozzoli, F; Poda, D V; Podviyanuk, R B; Polischuk, O G; Prosperi, D; Shlegel, V N; Tretyak, V I; Tupitsyna, I A; Vasiliev, Ya V; Vostretsov, Yu Ya

    2010-01-01T23:59:59.000Z

    The radioactive contamination of ZnWO4 crystal scintillators has been measured deep underground at the Gran Sasso National Laboratory (LNGS) of the INFN in Italy with a total exposure 3197 kg x h. Monte Carlo simulation, time-amplitude and pulse-shape analyses of the data have been applied to estimate the radioactive contamination of the ZnWO4 samples. One of the ZnWO4 crystals has also been tested by ultra-low background gamma spectrometry. The radioactive contaminations of the ZnWO4 samples do not exceed 0.002 â?? 0.8 mBq/kg (depending on the radionuclide), the total alpha activity is in the range: 0.2 - 2 mBq/kg. Particular radioactivity, beta active 65Zn and alpha active 180W, has been detected. The effect of the re-crystallization on the radiopurity of the ZnWO4 crystal has been studied. The radioactive contamination of samples of the ceramic details of the set-ups used in the crystals growth has been checked by low background gamma spectrometry. A project scheme on further improvement of the radiopur...

  17. Low background detector with enriched 116CdWO4 crystal scintillators to search for double beta decay of 116Cd

    E-Print Network [OSTI]

    A. S. Barabash; P. Belli; R. Bernabei; R. S. Boiko; F. Cappella; V. Caracciolo; D. M. Chernyak; R. Cerulli; F. A. Danevich; M. L. Di Vacri; A. E. Dossovitskiy; E. N. Galashov; A. Incicchitti; V. V. Kobychev; S. I. Konovalov; G. P. Kovtun; V. M. Kudovbenko; M. Laubenstein; A. L. Mikhlin; S. Nisi; D. V. Poda; R. B. Podviyanuk; O. G. Polischuk; A. P. Shcherban; V. N. Shlegel; D. A. Solopikhin; Yu. G. Stenin; V. I. Tretyak; V. I. Umatov; Ya. V. Vasiliev; V. D. Virich

    2011-08-13T23:59:59.000Z

    A cadmium tungstate crystal boule enriched in $^{116}$Cd to 82% with mass of 1868 g was grown by the low-thermal-gradient Czochralski technique. The isotopic composition of cadmium and the trace contamination of the crystal were estimated by High Resolution Inductively Coupled Plasma Mass-Spectrometry. The crystal scintillators produced from the boule were subjected to characterization that included measurements of transmittance and energy resolution. A low background scintillation detector with two $^{116}$CdWO$_4$ crystal scintillators (586 g and 589 g) was developed. The detector was running over 1727 h deep underground at the Gran Sasso National Laboratories of the INFN (Italy), which allowed to estimate the radioactive contamination of the enriched crystal scintillators. The radiopurity of a third $^{116}$CdWO$_4$ sample (326 g) was tested with the help of ultra-low background high purity germanium $\\gamma$ detector. Monte Carlo simulations of double $\\beta$ processes in $^{116}$Cd were used to estimate the sensitivity of an experiment to search for double $\\beta$ decay of $^{116}$Cd.

  18. Radiopurity of CaWO$_4$ Crystals for Direct Dark Matter Search with CRESST and EURECA

    E-Print Network [OSTI]

    Münster, A; Angloher, G; Bento, A; Bucci, C; Canonica, L; Erb, A; Feilitzsch, F v; Gorla, P; Gütlein, A; Hauff, D; Jochum, J; Kraus, H; Lanfranchi, J -C; Laubenstein, M; Loebell, J; Ortigoza, Y; Petricca, F; Potzel, W; Pröbst, F; Puimedon, J; Reindl, F; Roth, S; Rottler, K; Sailer, C; Schäffner, K; Schieck, J; Scholl, S; Schönert, S; Seidel, W; Stodolsky, L; Strandhagen, C; Strauss, R; Tanzke, A; Uffinger, M; Ulrich, A; Usherov, I; Wawoczny, S; Willers, M; Wüstrich, M; Zöller, A

    2014-01-01T23:59:59.000Z

    The direct dark matter search experiment CRESST uses scintillating CaWO$_4$ single crystals as targets for possible WIMP scatterings. An intrinsic radioactive contamination of the crystals as low as possible is crucial for the sensitivity of the detectors. In the past CaWO$_4$ crystals operated in CRESST were produced by institutes in Russia and the Ukraine. Since 2011 CaWO$_4$ crystals have also been grown at the crystal laboratory of the Technische Universit\\"at M\\"unchen (TUM) to better meet the requirements of CRESST and of the future tonne-scale multi-material experiment EURECA. The radiopurity of the raw materials and of first TUM-grown crystals was measured by ultra-low background $\\gamma$-spectrometry. Two TUM-grown crystals were also operated as low-temperature detectors at a test setup in the Gran Sasso underground laboratory. These measurements were used to determine the crystals' intrinsic $\\alpha$-activities which were compared to those of crystals produced at other institutes. The total $\\alpha$...

  19. Oxygen contamination in liquid Argon: combined effects on ionization electron charge and scintillation light

    E-Print Network [OSTI]

    R. Acciarri; M. Antonello; B. Baibussinov; M. Baldo-Ceolin; P. Benetti; F. Calaprice; E. Calligarich; M. Cambiaghi; N. Canci; F. Carbonara; F. Cavanna; S. Centro; A. G. Cocco; F. Di Pompeo; G. Fiorillo; C. Galbiati; V. Gallo; L. Grandi; G. Meng; I. Modena; C. Montanari; O. Palamara; L. Pandola; F. Pietropaolo; G. L. Raselli; M. Roncadelli; M. Rossella; C. Rubbia; E. Segreto; A. M. Szelc; F. Tortorici; S. Ventura; C. Vignoli

    2008-04-08T23:59:59.000Z

    A dedicated test of the effects of Oxygen contamination in liquid Argon has been performed at the INFN-Gran Sasso Laboratory (LNGS, Italy) within the WArP R&D program. Two detectors have been used: the WArP 2.3 lt prototype and a small (0.7 lt) dedicated detector, coupled with a system for the injection of controlled amounts of gaseous Oxygen. Purpose of the test with the 0.7 lt detector is to detect the reduction of the long-lived component lifetime of the Argon scintillation light emission at increasing O2 concentration. Data from the WArP prototype are used for determining the behavior of both the ionization electron lifetime and the scintillation long-lived component lifetime during the O2-purification process activated in closed loop during the acquisition run. The electron lifetime measurements allow to infer the O2 content of the Argon and correlate it with the long-lived scintillation lifetime data. The effect of Oxygen contamination on the scintillation light has been thus measured over a wide range of O2 concentration, spanning from about 10^-3 ppm up to about 10 ppm. The rate constant of the light quenching process induced by Oxygen in LAr has been found to be k'(O2)=0.54+-0.03 micros^-1 ppm^-1.

  20. Possible Origin Of The Neutrino Speed Anomaly Reported By OPERA

    E-Print Network [OSTI]

    Dado, Shlomo

    2011-01-01T23:59:59.000Z

    Recently the OPERA collaboration reported a measurement of a superluminal speed of muon neutrinos travelling through the Earth's crust between their production site at CERN and their detection site under Gran Sasso, ~730 km away. The measurement was based on the assumption that the pulse shape of the neutrinos from the decay of parent mesons produced in proton-target collisions is the same as that of the incident protons. Here we argue that the effective column density of the target along the beam direction decreases with time during the 10.5 microseconds duration of the proton pulse. This is because of the thermal expansion and expulsion of target material along the beam by the energy-momentum deposition during the 10.5 microseconds pulse. The progresive reduction in the effective column density during the pulse decreases the neutrino production rate per incident proton. It could have advanced the mean production time of the detected neutrinos relative to that calculated from the proton pulse-shape, by an am...

  1. Possible Origin Of The Neutrino Speed Anomaly Reported By OPERA

    E-Print Network [OSTI]

    Shlomo Dado; Arnon Dar

    2011-10-28T23:59:59.000Z

    Recently the OPERA collaboration reported a measurement of a superluminal speed of muon neutrinos travelling through the Earth's crust between their production site at CERN and their detection site under Gran Sasso, ~730 km away. The measurement was based on the assumption that the pulse shape of the neutrinos from the decay of parent mesons produced in proton-target collisions is the same as that of the incident protons. Here we argue that the effective column density of the target along the beam direction decreases with time during the 10.5 microseconds duration of the proton pulse. This is because of the thermal expansion and expulsion of target material along the beam by the energy-momentum deposition during the 10.5 microseconds pulse. The progresive reduction in the effective column density during the pulse decreases the neutrino production rate per incident proton. It could have advanced the mean production time of the detected neutrinos relative to that calculated from the proton pulse-shape, by an amount comparable to the measured neutrino lead time (60.7+/-6.9(stat) +/-7.4(sys) ns. This explanation implies that the planned measurements by OPERA of the speed of neutrinos produced in much shorter (a few ns) pulses, should yield a speed consistent with the speed of light in free space.

  2. Neutron Scattering Facility for Characterization of CRESST and EURECA Detectors at mK Temperatures

    E-Print Network [OSTI]

    J. -C. Lanfranchi; C. Ciemniak; C. Coppi; F. von Feilitzsch; A. Gütlein; H. Hagn; C. Isaila; J. Jochum; M. Kimmerle; S. Pfister; W. Potzel; W. Rau; S. Roth; K. Rottler; C. Sailer; S. Scholl; I. Usherov; W. Westphal

    2008-10-01T23:59:59.000Z

    CRESST (Cryogenic Rare Event Search with Superconducting Thermometers) is an experiment located at the Gran Sasso underground laboratory and aimed at the direct detection of dark matter in the form of WIMPs. The setup has just completed a one year commissioning run in 2007 and is presently starting a physics run with an increased target mass. Scintillating $\\mathrm{CaWO_4}$ single crystals, operated at temperatures of a few millikelvin, are used as target to detect the tiny nuclear recoil induced by a WIMP. The powerful background identification and rejection of $\\alpha$, e$^{-}$ and $\\gamma$ events is realized via the simultaneous measurement of a phonon and a scintillation signal generated in the $\\mathrm{CaWO_4}$ crystal. However, neutrons could still be misidentified as a WIMP signature. Therefore, a detailed understanding of the individual recoil behaviour in terms of phonon generation and scintillation light emission due to scattering on Ca, O or W nuclei, respectively, is mandatory. The only setup which allows to perform such measurements at the operating temperature of the CRESST detectors has been installed at the Maier-Leibnitz-Accelerator Laboratory in Garching and is presently being commissioned. The design of this neutron scattering facility is such that it can also be used for other target materials, e.g. $\\mathrm{ZnWO_4}$, $\\mathrm{PbWO_4}$ and others as foreseen in the framework of the future multitarget tonne-scale experiment EURECA (European Underground Rare Event Calorimeter Array).

  3. Prompt Gamma Rays in {sup 77}Ge after Neutron Capture on {sup 76}Ge

    SciTech Connect (OSTI)

    Meierhofer, Georg; Grabmayr, Peter; Jochum, Josef [Physikalisches Institut, Eberhard Karls Universitaet Tuebingen, Auf der Morgenstelle 14, 72076 Tuebingen (Germany); Canella, Lea [Institut fuer Radiochemie, Technische Universitaet Muenchen, Walther-Meissner-Str. 3, 85748 Garching (Germany); Jolie, Jan; Kudejova, Petra; Warr, Nigel [Institut fuer Kernphysik, Universitaet zu Koeln, Zuelpicher Str. 77, 50937 Cologne (Germany)

    2009-01-28T23:59:59.000Z

    The observation of neutrinoless double beta decay would be proof of the Majorana nature of the neutrino. Half-lives for these decays are very long (for {sup 76}Ge:>10{sup 25} y), so background reduction and rejection is the major task for double beta experiments. The GERDA (GERmanium Detector Array) experiment at the Gran Sasso Laboratory of the INFN (LNGS) searches for neutrinoless double beta decay of {sup 76}Ge. The isotope {sup 76}Ge is an ideal candidate because it can be used as source and detector at the same time. A large remaining contribution to the background arises from the prompt gamma cascade after neutron capture by {sup 76}Ge followed by {beta}{sup -}-decay of {sup 77}Ge. Since the prompt gamma decay scheme is poorly known, measurements with isotopically enriched Germanium samples were carried out at the PGAA facility at the research reactor FRM II (Munich). With the known prompt gamma spectrum it will be possible to improve the overall veto efficiency of the GERDA experiment.

  4. A measurement of the 2 neutrino double beta decay rate of Te-130 in the CUORICINO experiment

    SciTech Connect (OSTI)

    Kogler, Laura

    2011-11-03T23:59:59.000Z

    CUORICINO was a cryogenic bolometer experiment designed to search for neutrinoless double beta decay and other rare processes, including double beta decay with two neutrinos (2{nu}{beta}{beta}). The experiment was located at Laboratori Nazionali del Gran Sasso and ran for a period of about 5 years, from 2003 to 2008. The detector consisted of an array of 62 TeO{sub 2} crystals arranged in a tower and operated at a temperature of #24;10 mK. Events depositing energy in the detectors, such as radioactive decays or impinging particles, produced thermal pulses in the crystals which were read out using sensitive thermistors. The experiment included 4 enriched crystals, 2 enriched with {sup 130}Te and 2 with {sup 128}Te, in order to aid in the measurement of the 2{nu}{beta}{beta} rate. The enriched crystals contained a total of #24;350 g {sup 130}Te. The 128-enriched (130-depleted) crystals were used as background monitors, so that the shared backgrounds could be subtracted from the energy spectrum of the 130- enriched crystals. Residual backgrounds in the subtracted spectrum were fit using spectra generated by Monte-Carlo simulations of natural radioactive contaminants located in and on the crystals. The 2{nu}{beta}{beta} half-life was measured to be T{sup 2{nu}}{sub 1/2} = [9.81{+-} #6;0.96(stat){+-} 0.49(syst)]#2;x10{sup 20} y.

  5. GERDA phase II detectors: Behind the production and characterisation at low background conditions

    SciTech Connect (OSTI)

    Maneschg, Werner [Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg (Germany)] [Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg (Germany); Collaboration: GERDA Collaboration; and others

    2013-08-08T23:59:59.000Z

    The low background GERmanium Detector Array (GERDA) at Laboratori Nazionali del Gran Sasso (LNGS) is designed to search for the rare neutrinoless double beta decay (0???) in {sup 76}Ge. Bare germanium diodes are operated in liquid argon which is used as coolant, as passive and soon active as well shield against external radiation. Currently, Phase I of the experiment is running using ?15 kg of co-axial High Purity Germanium diodes. In order to increase the sensitivity of the experiment 30 Broad Energy Germanium (BEGe) diodes will be added within 2013. This presentation reviews the production chain of the new BEGe detectors from isotopic enrichment to diode production and testing. As demonstrated all steps were carefully planned in order to minimize the exposure of the enriched germanium to cosmic radiation. Following this premise, acceptance and characterisation measurement of the newly produced diodes have been performed within the HEROICA project in the Belgian underground laboratory HADES close to the diode manufacturer. The test program and the results from a subset of the recently terminated GERDA Phase II BEGe survey will be presented.

  6. Sensitivity of CUORE to Neutrinoless Double-Beta Decay

    SciTech Connect (OSTI)

    CUORE; Alessandria, F.; Andreotti, E.; Ardito, R.; Arnaboldi, C.; Avignone III, F. T.; Balata, M.; Bandac, I.; Banks, T. I.; Bari, G.; Beeman, J.; Bellini, F.; Bersani, A.; Biassoni, M.; Bloxham, T.; Brofferio, C.; Bryant, A.; Bucci, C.; Cai, X. Z.; Canonica, L.; Capelli, S.; Carbone, L.; Cardani, L.; Carrettoni, M.; Casali, N.; Chott, N.; Clemenza, M.; Cosmelli, C.; Cremonesi, O.; Creswick, R. J.; Dafinei, I.; Dally, A.; Biasi, A. De; Decowski, M. P.; Deninno, M. M.; Waard, A. de; Domizio, S. Di; Ejzak, L.; Faccini, R.; Fang, D. Q.; Farach, H. A.; Ferri, E.; Ferroni, F.; Fiorini, E.; Foggetta, L.; Franceschi, M. A.; Freedman, S. J.; Frossati, G.; Fujikawa, B. K.; Giachero, A.; Gironi, L.; Giuliani, A.; Gorla, P.; Gotti, C.; Guardincerri, E.; Gutierrez, T. D.; Haller, E. E.; Han, K.; Heeger, K. M.; Huang, H. Z.; Ichimura, K.; Kadel, R.; Kazkaz, K.; Keppel, G.; Kogler, L.; Kolomensky, Yu. G.; Kraft, S.; Lenz, D.; Li, Y. L.; Liu, X.; Longo, E.; Ma, Y. G.; Maiano, C.; Maier, G.; Maino, M.; Mancini, C.; Martinez, C.; Martinez, M.; Maruyama, R. H.; Moggi, N.; Morganti, S.; Napolitano, T.; Newman, S.; Nisi, S.; Nones, C.; Norman, E. B.; Nucciotti, A.; Orio, F.; Orlandi, D.; Ouellet, J. L.; Pallavicini, M.; Palmieri, V.; Pattavina, L.; Pavan, M.; Pedretti, M.; Pessina, G.; Pirro, S.; Previtali, E.; Rampazzo, V.; Rimondi, F.; Rosenfeld, C.; Rusconi, C.; Salvioni, C.; Sangiorgio, S.; Schaeffer, D.; Scielzo, N. D.; Sisti, M.; Smith, A. R.; Stivanello, F.; Taffarello, L.; Terenziani, G.; Tian, W. D.; Tomei, C.; Trentalange, S.; Ventura, G.; Vignati, M.; Wang, B. S.; Wang, H. W.; Whitten Jr., C. A.; Wise, T.; Woodcraft, A.; Xu, N.; Zanotti, L.; Zarra, C.; Zhu, B. X.; Zucchelli, S.

    2011-11-23T23:59:59.000Z

    In this paper, we study the sensitivity of CUORE, a bolometric double-beta decay experiment under construction at the Laboratori Nazionali del Gran Sasso in Italy. Two approaches to the computation of experimental sensitivity are discussed and compared, and the formulas and parameters used in the sensitivity estimates are provided. Assuming a background rate of 10{sup -2} cts/(keV kg y), we find that, after 5 years of live time, CUORE will have a 1#27;{sigma} sensitivity to the neutrinoless double-beta decay half-life of {caret T{sup 0{nu}}{sub 1/2}}(1{sigma}#27;) = 1.6x#2;10{sup 26} y and thus a potential to probe the effective Majorana neutrino mass down to 41-95 meV; the sensitivity at 1.64{sigma}#27;, which corresponds to 90% C.L., will be {caret T{sup 0{nu}}{sub 1/2}(1.64{sigma}#27;}) = 9.5x10{sup 25} y. This range is compared with the claim of observation of neutrinoless double-beta decay in {sup 76}Ge and the preferred range in the neutrino mass parameter space from oscillation results.

  7. Determination of free acid by standard addition method in potassium thiocyanate

    SciTech Connect (OSTI)

    Baumann, E W

    1982-06-01T23:59:59.000Z

    The free acid content of solutions containing hydrolyzable ions has been determined potentiometrically by a standard addition method. Two increments of acid are added to the sample in 1M potassium thiocyanate solution. The sample concentration is calculated by solution of three simultaneous Nernst equations. The method has been demonstrated for solutions containing Al/sup 3 +/, Cr/sup 3 +/, Fe/sup 3 +/, Hg/sup 2 +/, Ni/sup 2 +/, Th/sup 4 +/, or UO/sub 2//sup 2 +/ with a metal-to-acid ratio of < 2.5. The method is suitable for determination of 10 ..mu..moles acid in 10 mL total volume. The accuracy can be judged from the agreement of the Nernst slopes found in the presence and absence of hydrolyzable ions. The relative standard deviation is < 2.5%. The report includes a survey of experiments with thermometric, pH, and Gran plot titrations in a variety of complexants, from which the method was evolved. Also included is a literature survey of sixty references, a discussion of the basic measurements, and a complete analytical procedure.

  8. Precise measurement of the 222Rn half-life: a probe to monitor the stability of radioactivity

    E-Print Network [OSTI]

    Bellotti, E; Di Carlo, G; Laubenstein, M; Menegazzo, R

    2015-01-01T23:59:59.000Z

    We give the results of a study on the 222Rn decay we performed in the Gran Sasso Laboratory (LNGS) by detecting the gamma rays from the radon progeny. The motivation was to monitor the stability of radioactivity measuring several times per year the half-life of a short lifetime (days) source instead of measuring over a long period the activity of a long lifetime (tens or hundreds of years) source. In particular, we give the reason of the large periodical fluctuations in the count rate of the gamma rays due to radon inside a closed canister which has been described in literature and which has been attributed to a possible influence of a component in the solar irradiation affecting the nuclear decay rates. We then provide the result of four half-life measurements we performed underground at LNGS in the period from May 2014 to January 2015 with radon diffused into olive oil. Briefly, we did not measure any change of the 222Rn half-life with a 8*10^-5 precision. Finally, we provide the most precise value for the ...

  9. Precise measurement of the 222Rn half-life: a probe to monitor the stability of radioactivity

    E-Print Network [OSTI]

    E. Bellotti; C. Broggini; G. Di Carlo; M. Laubenstein; R. Menegazzo

    2015-01-30T23:59:59.000Z

    We give the results of a study on the 222Rn decay we performed in the Gran Sasso Laboratory (LNGS) by detecting the gamma rays from the radon progeny. The motivation was to monitor the stability of radioactivity measuring several times per year the half-life of a short lifetime (days) source instead of measuring over a long period the activity of a long lifetime (tens or hundreds of years) source. In particular, we give the reason of the large periodical fluctuations in the count rate of the gamma rays due to radon inside a closed canister which has been described in literature and which has been attributed to a possible influence of a component in the solar irradiation affecting the nuclear decay rates. We then provide the result of four half-life measurements we performed underground at LNGS in the period from May 2014 to January 2015 with radon diffused into olive oil. Briefly, we did not measure any change of the 222Rn half-life with a 8*10^-5 precision. Finally, we provide the most precise value for the 222Rn half-life: 3.82146(16){stat}(4){syst} days.

  10. On the dust environment of Main-Belt Comet 313P/Gibbs

    E-Print Network [OSTI]

    Pozuelos, F J; Licandro, J; Moreno, F

    2015-01-01T23:59:59.000Z

    We present observations carried out using the 10.4 m Gran Telescopio Canarias and an interpretative model of the dust environment of activated asteroid 313P/Gibbs. We discuss three different models relating to different values of the dust parameters, i.e, dust loss rate, maximum and minimum sizes of particles, power index of the size distribution, and emission pattern. The best model corresponds with an isotropic emission of particles which started on August 1st. The size of grains were in the range of $0.1-2000$ $\\mu$m, with velocities for 100 $\\mu$m particles between $0.4-1.9$ m$~$s$^{-1}$, with a dust production rate in the range of $0.2-0.8$ kg$~$s$^{-1}$. The dust tails' brightness and morphology are best interpreted in terms of a model of sustained and low dust emission driven by water-ice sublimation, spanning since 2014 August 1st, and triggered by a short impulsive event. This event produced an emission of small particles of about 0.1 $\\mu$m with velocities of $\\sim$4 m$~$s$^{-1}$. From our model we ...

  11. Results from the Cuoricino (Zero-Neutrino Double Beta) Decay Experiment

    SciTech Connect (OSTI)

    Arnaboldi, C; Artusa, D R; Avignone, F T; Balata, M; Bandac, I; Barucci, M; Beeman, J W; Bellini, F; Brofferio, C; Bucci, C; Capelli, S; Carbone, L; Cebrian, S; Clemenza, M; Cremonesi, O; Creswick, R J; de Ward, A; Didomizio, S D; Dolinski, M J; Farach, H A; Fiorini, E; Frossati, G; Giachero, A; Giuliani, A; Gorla, P; Guardincerri, E; Gutierrez, T D; Haller, E E; Maruyama, R H; McDonald, R J; Nisi, S; Nones, C; Norman, E B; Nucciotti, A; Olivieri, E; Pallavicini, M; Palmieri, E; Pasca, E; Pavan, M; Pedretti, M; Pessina, G; Pirro, S; Previtali, E; Risegari, L; Rosenfeld, C; Sangiorgio, S; Sisti, M; Smith, A R; Torres, L; Ventura, G; Vignati, M

    2007-12-20T23:59:59.000Z

    Recent results from the CUORICINO {sup 130}Te zero-neutrino double-beta (0v{beta}{beta}) decay experiment are reported. CUORICINO is an array of 62 tellurium oxide (TeO{sub 2}) bolometers with an active mass of 40.7 kg. It is cooled to {approx}8 mK by a dilution refrigerator shielded from environmental radioactivity and energetic neutrons. It is running in the Laboratori Nazionali del Gran Sasso (LNGS) in Assergi, Italy. These data represent 11.83 kg y or 90.77 mole-years of {sup 130}Te. No evidence for 0v{beta}{beta}-decay was observed and a limit of T{sub 1/2}{sup 0v} ({sup 130}Te) {ge} 3.0 x 10{sup 24} y (90% C.L.) is set. This corresponds to upper limits on the effective mass, , between 0.19 and 0.68eV when analyzed with the many published nuclear structure calculations. In the context of these nuclear models, the values fall within the range corresponding to the claim of evidence of 0v{beta}{beta}-decay by H.V. Klapdor-Kleingrothaus and his co-workers. The experiment continues to acquire data.

  12. Some conclusive considerations on the comparison of the ICARUS nu_mu to nu_e oscillation search with the MiniBooNE low-energy event excess

    E-Print Network [OSTI]

    M. Antonello; B. Baibussinov; P. Benetti; F. Boffelli; A. Bubak; E. Calligarich; S. Centro; A. Cesana; K. Cieslik; D. B. Cline; A. G. Cocco; A. Dabrowska; A. Dermenev; A. Falcone; C. Farnese; A. Fava; A. Ferrari; D. Gibin; S. Gninenko; A. Guglielmi; M. Haranczyk; J. Holeczek; M. Kirsanov; J. Kisiel; I. Kochanek; J. Lagoda; S. Mania; A. Menegolli; G. Meng; C. Montanari; S. Otwinowski; P. Picchi; F. Pietropaolo; P. Plonski; A. Rappoldi; G. L. Raselli; M. Rossella; C. Rubbia; P. Sala; A. Scaramelli; F. Sergiampietri; D. Stefan; R. Sulej; M. Szarska; M. Terrani; M. Torti; F. Varanini; S. Ventura; C. Vignoli; H. Wang; X. Yang; A. Zalewska; A. Zani; K. Zaremba

    2015-02-17T23:59:59.000Z

    A sensitive search for anomalous LSND-like nu_mu to nu_e oscillations has been performed by the ICARUS Collaboration exposing the T600 LAr-TPC to the CERN to Gran Sasso (CNGS) neutrino beam. The result is compatible with the absence of additional anomalous contributions giving a limit to oscillation probability of 3.4E-3 and 7.6E-3 at 90% and 99% confidence levels respectively showing a tension between these new limits and the low-energy event excess (200 < E_nu QE < 475 MeV) reported by MiniBooNE Collaboration. A more detailed comparison of the ICARUS data with the MiniBooNE low-energy excess has been performed, including the energy resolution as obtained from the official MiniBooNE data release. As a result the previously reported tension is confirmed at 90% C.L., suggesting an unexplained nature or an otherwise instrumental effect for the MiniBooNE low energy event excess

  13. Nesting biology, morphological remarks, and description of the mature larva of Mellinus arvensis obscurus (Hymenoptera: Crabronidae) in Nepal

    SciTech Connect (OSTI)

    Boesi, R.; Polidori, C.; Andrietti, F. [Dipartimento di Biologia, Sezione di Zoologia e Citologia, Universita degli Studi di Milano-Via Celoria, 26, 20133, Milan (Italy); Gayubo, S.F.; Tormos, J.; Asis, J.D. [Unidad de Zoologia, Facultad de Biologia, Universidad de Salamanca-37071, Salamanca (Spain)

    2007-03-15T23:59:59.000Z

    Recently re-named as a sub-species of Mellinus arvensis, Mellinus arvensis obscurus Handlirsch 1888 was investigated ecologically and morphologically in Nepal, in order to underline the most important differences with the well known M. arvensis arvensis. Mellinus arvensis obscurus females nested in clumped aggregations on inclined plains at high altitudes, both on sunny bare soil and on a shaded grassy one. Beginning of monsoon season probably interfered with wasp activity, and females performed few provisioning flights during the day. Prey consisted of a broad range of Diptera, except for one case of a spider. Many females were observed not provisioning a nest but floating on the nesting site, and many intraspecific interactions suggested a high degree of usurpation attempts. At least one species of flies and two of ants probably acted as natural enemies of the wasp. Morphological observations on females showed that the Nepal population shares more similarities (shape of tergite I, body punctation) with the European populations than with the closer Japanese population; melanization is strong, according to west-east and altitudinal cline. The mature larva of M. arvensis obscurus Handlirsch is described, illustrated, and compared with the other mature larva of the genus. The differences between both larvae mainly lie in the presence/absence, and number or differentiation of integumental structures. We conclude that morphological traits are more important than ecological and behavioral ones in distinguishing M. arvensis obscurus from M. arvensis arvensis. (author) [Spanish] En el presente articulo se aportan los resultados y conclusiones de un estudio, llevado a cabo en Nepal, en el que se abordaron aspectos ecologicos, comportamentales y morfologicos (tanto del ultimo estado de la fase larvaria como del adulto) de Mellinus arvensis obscurus Handlirsch 1888. El principal objetivo del estudio radicaba en mostrar las principales diferencias que separan a esta subespecie de la bien estudiada subespecie nominal. Mellinus arvensis obscurus nidifica a gran altitud, en terreno inclinado, con y sin vegetacion, expuesto en mayor o menor medida al sol y en agregaciones muy compactas. Durante la estacion lluviosa la hembras llevan a cabo pocos vuelos de aprovisonamiento. Las presas pertenecen al orden de los dipteros, aunque, en una ocasion se observo el aporte de una arana. Gran numero de las interacciones intraespecificas observadas sugieren un alto grado de intentos de usurpacion de nidos. Los enemigos naturales mas sobresalientes pertenecen al orden de los dipteros y a la familia de los formicidos. Del estudio morfologico del adulto, mencionaremos que la foma del terguito 1 y la escultura del cuerpo, en las hembras de las poblaciones del Nepal, son mas semejantes a los de las hembras de las poblaciones europeas que no a los de las japonesas. De la fase larvaria se describe el ultimo estado larvario, a la vez que se compara con la otra larva madura ya descrita del genero. Las diferencias entre ambas larvas maduras radican en la presencia/ausencia, numero o diferenciacion de las estructuras tegumentarias. El estudio finaliza concluyendo que los rasgos morfologicos son mas importantes, que los aspectos ecologicos y comportamentales, a la hora de establecer una separacion entre las dos subespecies (author)

  14. OPTICAL PHOTOMETRIC GTC/OSIRIS OBSERVATIONS OF THE YOUNG MASSIVE ASSOCIATION CYGNUS OB2

    SciTech Connect (OSTI)

    Guarcello, M. G.; Wright, N. J.; Drake, J. J.; Aldcroft, T.; Kashyap, V. L. [Smithsonian Astrophysical Observatory, MS-67, 60 Garden Street, Cambridge, MA 02138 (United States); Garcia-Alvarez, D. [Instituto de Astrofisica de Canarias, E-38205 La Laguna, Tenerife (Spain); Drew, J. E. [CAR/STRI, University of Hertfordshire, College Lane, Hatfield, AL10 9AB (United Kingdom)

    2012-10-15T23:59:59.000Z

    In order to fully understand the gravitational collapse of molecular clouds, the star formation process, and the evolution of circumstellar disks, these phenomena must be studied in different Galactic environments with a range of stellar contents and positions in the Galaxy. The young massive association Cygnus OB2, in the Cygnus-X region, is a unique target to study how star formation and the evolution of circumstellar disks proceed in the presence of a large number of massive stars. We present a catalog obtained with recent optical observations in the r, i, z filters with OSIRIS, mounted on the 10.4 m Gran Telescopio CANARIAS telescope, which is the deepest optical catalog of Cyg OB2 to date. The catalog consists of 64,157 sources down to M = 0.15 M{sub Sun} at the adopted distance and age of Cyg OB2. A total of 38,300 sources have good photometry in all three bands. We combined the optical catalog with existing X-ray data of this region, in order to define the cluster locus in the optical diagrams. The cluster locus in the r - i versus i - z diagram is compatible with an extinction of the optically selected cluster members in the 2.64{sup m} < A{sub V} < 5.57{sup m} range. We derive an extinction map of the region, finding a median value of A{sub V} = 4.33{sup m} in the center of the association, decreasing toward the northwest. In the color-magnitude diagrams, the shape of the distribution of main-sequence stars is compatible with the presence of an obscuring cloud in the foreground {approx}850 {+-} 25 pc from the Sun.

  15. Search for 14.4 keV solar axions from M1 transition of {sup 57}Fe with CUORE crystals

    SciTech Connect (OSTI)

    NONE

    2013-05-01T23:59:59.000Z

    We report the results of a search for axions from the 14.4 keV M1 transition from {sup 57}Fe in the core of the sun using the axio-electric effect in TeO{sub 2} bolometers. The detectors are 5 × 5 × 5 cm{sup 3} crystals operated at about 10 mK in a facility used to test bolometers for the CUORE experiment at the Laboratori Nazionali del Gran Sasso in Italy. An analysis of 43.65 kg?d of data was made using a newly developed low energy trigger which was optimized to reduce the energy threshold of the detector. An upper limit of 0.58 c?kg{sup ?1}?d{sup ?1} is established at 95% C.L., which translates into lower bounds f{sub A} ? 3.12 × 10{sup 5} GeV 95% C.L. (DFSZ model) and f{sub A} ? 2.41 × 10{sup 4} GeV 95% C.L. (KSVZ model) on the Peccei-Quinn symmetry-breaking scale, for a value of S = 0.5 of the flavor-singlet axial vector matrix element. These bounds can be expressed in terms of axion masses as m{sub A} ? 19.2 eV and m{sub A} ? 250 eV at 95% C.L. in the DFSZ and KSVZ models respectively. Bounds are given also for the interval 0.35 ? S ? 0.55.

  16. Agujeros de Gusano en Gravedad (2+1)

    E-Print Network [OSTI]

    Alexis Larranaga

    2007-07-16T23:59:59.000Z

    Traversable wormholes are objects that present a lot of interest in the last years because of their geometric features and their relation with exotic matter. In this paper we presnt a review of the principal characteristics of traversable Morris-Thorne wormholes, their construction proccess and some aspects about the exotic matter that is needed in order to mantain them. Then, we use a junction proccess to obatin two specific wormhole solutions in the (2+1) gravity formalism with negative cosmological constant. The obtained solutions represent wormholes with an external spacetime correspondient to the BTZ black hole solution. We also show that exotic matter is needed to mantain these wormholes. ----- Los agujeros de gusano atravesables son objetos que presentan un gran interes en la actualidad debido a sus caracteristicas geometricas y a su relacion con la materia exotica. En el presente trabajo se muestra una revision de las caracteristicas de los agujeros de gusano atravesables al estilo de Morris y Thorne, al igual que el proceso de construccion y aspectos de la materia exotica necesaria para mantenerlos. Luego, se utiliza un proceso de juntura para construir dos soluciones especificas tipo agujero de gusano en el formalismo de la gravedad (2+1) con constante cosmologica negativa. Con esta construccion, se obtienen agujeros atravesables que se encuentran unidos a un espacio-tiempo externo correspondiente al agujero negro BTZ sin momento angular y sin carga electrica. Ademas de esto, se muestra que para mantener este tipo de solucion es necesaria la existencia de materia exotica, es decir, materia que viole las condiciones de energia.

  17. Neutron Interactions in the CUORE Neutrinoless Double Beta Decay Experiment

    SciTech Connect (OSTI)

    Dolinski, M J

    2008-09-24T23:59:59.000Z

    Neutrinoless double beta decay (0{nu}DBD) is a lepton-number violating process that can occur only for a massive Majorana neutrino. The search for 0{nu}DBD is currently the only practical experimental way to determine whether neutrinos are identical to their own antiparticles (Majorana neutrinos) or have distinct particle and anti-particle states (Dirac neutrinos). In addition, the observation of 0{nu}DBD can provide information about the absolute mass scale of the neutrino. The Cuoricino experiment was a sensitive search for 0{nu}DBD, as well as a proof of principle for the next generation experiment, CUORE. CUORE will search for 0{nu}DBD of {sup 130}Te with a ton-scale array of unenriched TeO{sub 2} bolometers. By increasing mass and decreasing the background for 0{nu}DBD, the half-life sensitivity of CUORE will be a factor of twenty better than that of Cuoricino. The site for both of these experiments is the Laboratori Nazionali del Gran Sasso, an underground laboratory with 3300 meters water equivalent rock overburden and a cosmic ray muon attenuation factor of 10{sup -6}. Because of the extreme low background requirements for CUORE, it is important that all potential sources of background in the 0{nu}DBD peak region at 2530 keV are well understood. One potential source of background for CUORE comes from neutrons, which can be produced underground both by ({alpha},n) reactions and by fast cosmic ray muon interactions. Preliminary simulations by the CUORE collaboration indicate that these backgrounds will be negligible for CUORE. However, in order to accurately simulate the expected neutron background, it is important to understand the cross sections for neutron interactions with detector materials. In order to help refine these simulations, I have measured the gamma-ray production cross sections for interactions of neutrons on the abundant stable isotopes of Te using the GEANIE detector array at the Los Alamos Neutron Science Center. In addition, I have used the GEANIE data to set an upper limit for the production of a 2529 keV gamma-ray from the {sup 126}Te(n,n{prime}{gamma}) reaction. This gamma-ray is a potential source of interference for the 0{nu}DBD peak. Based on this measurement, the contribution of this line to the background is expected to be negligible.