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Influence of cold working on mechanical properties of Al-SiC composites 25th

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Influence of cold working on mechanical properties of Al-SiC...

25th conference on New Developments in Wire Production and Processing, MEFORM 2017

作者： Szczepanik, Stefan Nikiel, Piotr Bednarczyk, Piotr AGH University of Science and Technology Faculty of Metals Engineering and Computer Industrial Science al. Mickiewicza Krakow30-059 Poland

ISBN: (纸本)9783035711332

The main objective of this research was a study on the simultaneous influence of cold working and particle reinforcement on the mechanical properties of aluminum. The model composites were fabricated by cold pressing of RAl-1 aluminum and 5 % and 10 % SiC powders and hot extrusion with extrusion ratio 3.8 in isothermal conditions at 480°C with 90° die angle to 18 mm diameter. Some specimens were then cold drawn with a linear velocity of 1 m/min to 16 % area reduction, and one specimen in 3 passes to 51 % reduction in area. Mechanical properties of the near fully dense composites were determined by axial compression, bending tests and hardness measurement and their microstructure examined, showing near homogenous distribution of SiC particles in the aluminium matrix. The increase in Young’s modulus (E) was from 67 to 74 GPa and to 82 GPa for 5 % and 10 % reinforcement, respectively. Drawing increased average yield strength from 70 to 100 MPa for Al, and from 74 to 110 MPa and from 80 to 115 MPa, for 5 and 10 % reinforcement, respectively. The results indicate that there is a significant increase in E, in accordance with the law of mixtures, through incorporation of SiC and a synergistic effect of SiC and plastic deformation during drawing on strength. An attempt is made to identify the various contributions to overall strengthening of Al by considering also Al-8.8Cu-6.3%Si-0.7Mg alloy. It appears that alloying and age-hardening have the greatest effect, but that contributions from hot, warm and cold working are not significant. As powder metallurgy processing is an important fabrication method, their incorporation into the processing schedule merits consideration. © 2017 Trans Tech Publications, Switzerland.

关键词： Silicon carbide

Status and prospects of discrete symmetries tests in positronium decays with the J-PET detector

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arXiv 2018年

作者： Silarski, M. Faculty of Physics Astronomy and Applied Computer Science Jagiellonian University S. Lojasiewicza 11 Kraków30-348 Poland

Positronium is a unique laboratory to study fundamental symmetries in the Standard Model, reflection in space (P), reversal in time (T), charge conjugation (C) and their combinations. The experimental limits on the C, CP and CPT symmetries violation in the decays of positronium are still several orders of magnitude higher than the expectations. The newly constructed Jagiellonian Positron Emission Tomograph (J-PET) was optimized for the registration of photons from the electron-positron annihilations. It enables tests of discrete symmetries in decays of positronium atoms via the determination of the expectation values of the discrete-symmetries-odd operators. In this article we present the capabilities of the J-PET detector in improving the current precision of discrete symmetries tests and report on the progress of analysis data from the first data-taking runs. Copyright © 2018, The Authors. All rights reserved.

关键词： Positrons

Overview of KAGRA: KAGRA science

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arXiv 2020年

作者： Akutsu, T. Ando, M. Arai, K. Arai, Y. Araki, S. Araya, A. Aritomi, N. Asada, H. Aso, Y. Bae, S. Bae, Y. Baiotti, L. Bajpai, R. Barton, M.A. Cannon, K. Cao, Z. Capocasa, E. Chan, M. Chen, C. Chen, K. Chen, Y. Chiang, C.-Y. Chu, H. Chu, Y.-K. Eguchi, S. Enomoto, Y. Flaminio, R. Fujii, Y. Fujikawa, F. Fukunaga, M. Fukushima, M. Gao, D. Ge, G. Ha, S. Hagiwara, A. Haino, S. Han, W.-B. Hasegawa, K. Hattori, K. Hayakawa, H. Hayama, K. Himemoto, Y. Hiranuma, Y. Hirata, N. Hirose, E. Hong, Z. Hsieh, B.H. Huang, C.-Z. Huang, H.-Y. Huang, P. Huang, Y.-C. Huang, Y. Hui, D.C.Y. Ide, S. Ikenoue, B. Imam, S. Inayoshi, K. Inoue, Y. Ioka, K. Ito, K. Itoh, Y. Izumi, K. Jeon, C. Jin, H.-B. Jung, K. Jung, P. Kaihotsu, K. Kajita, T. Kakizaki, M. Kamiizumi, M. Kanda, N. Kang, G. Kashiyama, K. Kawaguchi, K. Kawai, N. Kawasaki, T. Kim, C. Kim, J. Kim, J.C. Kim, W.S. Kim, Y.-M. Kimura, N. Kita, N. Kitazawa, H. Kojima, Y. Kokeyama, K. Komori, K. Kong, A.K.H. Kotake, K. Kozakai, C. Kozu, R. Kumar, R. Kume, J. Kuo, C. Kuo, H.-S. Kuromiya, Y. Kuroyanagi, S. Kusayanagi, K. Kwak, K. Lee, H.K. Lee, H.W. Lee, R. Leonardi, M. Li, T.G.F. Li, K.L. Lin, L.C.-C. Lin, C.-Y. Lin, F.-K. Lin, F.-L. Lin, H.L. Liu, G.C. Luo, L.-W. Majorana, E. Marchio, M. Michimura, Y. Mio, N. Miyakawa, O. Miyamoto, A. Miyazaki, Y. Miyo, K. Miyoki, S. Mori, Y. Morisaki, S. Moriwaki, Y. Nagano, K. Nagano, S. Nakamura, K. Nakano, H. Nakano, M. Nakashima, R. Nakayama, Y. Narikawa, T. Naticchioni, L. Negishi, R. Nguyen Quynh, L. Ni, W.-T. Nishizawa, Atsushi Nozaki, S. Obuchi, Y. Ogaki, W. Oh, J.J. Oh, K. Oh, S.H. Ohashi, M. Ohishi, N. Ohkawa, M. Ohta, H. Okutani, Y. Okutomi, K. Oohara, K. Ooi, C.P. Oshino, S. Otabe, S. Pan, K. Pang, H. Parisi, A. Park, J. Peña Arellano, F.E. Pinto, I. Sago, N. Saito, S. Saito, Y. Sakai, K. Sakai, Y. Sakuno, Y. Sato, S. Sato, T. Sawada, T. Mitaka City Tokyo181-8588 Japan Mitaka City Tokyo181-8588 Japan Department of Physics University of Tokyo Bunkyo-ku Tokyo113-0033 Japan University of Tokyo Bunkyo-ku Tokyo113-0033 Japan KAGRA Observatory University of Tokyo Kashiwa City Chiba277-8582 Japan Tsukuba City Ibaraki305-0801 Japan Earthquake Research Institute University of Tokyo Bunkyo-ku Tokyo113-0032 Japan Department of Mathematics and Physics Hirosaki University Hirosaki City Aomori036-8561 Japan Kamioka-cho Hida City Gifu506-1205 Japan Mitaka City Tokyo181-8588 Japan Yuseong-gu Daejeon34141 Korea Republic of National Institute for Mathematical Sciences Daejeon34047 Korea Republic of International College Osaka University Toyonaka City Osaka560-0043 Japan Tsukuba City Ibaraki305-0801 Japan Department of Astronomy Beijing Normal University Beijing100875 China Department of Applied Physics Fukuoka University Jonan Fukuoka City Fukuoka814-0180 Japan Department of Physics Tamkang University Danshui Dist. New Taipei City25137 Taiwan Department of Physics and Institute of Astronomy National Tsing Hua University Hsinchu30013 Taiwan Department of Physics Center for High Energy and High Field Physics National Central University Zhongli District Taoyuan City32001 Taiwan Institute of Physics Academia Sinica Nankang Taipei11529 Taiwan Université Savoie Mont Blanc CNRS/IN2P3 AnnecyF-74941 France Department of Astronomy University of Tokyo Mitaka City Tokyo181-8588 Japan Faculty of Engineering Niigata University Nishi-ku Niigata City Niigata950-2181 Japan State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics China Chinese Academy of Sciences Xiao Hong Shan Wuhan430071 China Ulsan44919 Korea Republic of Tsukuba City Ibaraki305-0801 Japan Chinese Academy of Sciences Shanghai Astronomical Observatory Shanghai200030 China Faculty of Science University of Toyama Toyama City Toyama930-8555 Japan KAGRA

KAGRA is a newly build GW observatory, a laser interferometer with 3 km arm length, located in Kamioka, Gifu, Japan. In this paper in the series of KAGRA-featured articles, we discuss the science targets of KAGRA projects, considering not only the baseline KAGRA (current design) but also its future upgrade candidates (KAGRA+) for the near to middle term (∼5 years). Copyright © 2020, The Authors. All rights reserved.

关键词： Interferometers

Adjusting Neutrino Interaction Models and Evaluating Uncertainties using NOvA Near Detector Data

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arXiv 2020年

作者： Acero, M.A. Adamson, P. Agam, G. Aliaga, L. Alion, T. Allakhverdian, V. Anfimov, N. Antoshkin, A. Asquith, L. Aurisano, A. Back, A. Backhouse, C. Baird, M. Balashov, N. Baldi, P. Bambah, B.A. Bashar, S. Bays, K. Bending, S. Bernstein, R. Bhatnagar, V. Bhuyan, B. Bian, J. Blair, J. Booth, A.C. Bour, P. Bowles, R. Bromberg, C. Buchanan, N. Butkevich, A. Calvez, S. Carroll, T.J. Catano-Mur, E. Childress, S. Choudhary, B.C. Coan, T.E. Colo, M. Corwin, L. Cremonesi, L. Davies, G.S. Derwent, P.F. Ding, P. Djurcic, Z. Doyle, D. Dukes, E.C. Dung, P. Duyang, H. Edayath, S. Ehrlich, R. Elkins, M. Feldman, G.J. Filip, P. Flanagan, W. Franc, J. Frank, M.J. Gallagher, H.R. Gandrajula, R. Gao, F. Germani, S. Giri, A. Gomes, R.A. Goodman, M.C. Grichine, V. Groh, M. Group, R. Guo, B. Habig, A. Hakl, F. Hartnell, J. Hatcher, R. Hatzikoutelis, A. Heller, K. Hewes, V. Himmel, A. Holin, A. Howard, B. Huang, J. Hylen, J. Jediny, F. Johnson, C. Judah, M. Kakorin, I. Kalra, D. Kaplan, D.M. Keloth, R. Klimov, O. Koerner, L.W. Kolupaeva, L. Kotelnikov, S. Kullenberg, Ch. Kumar, A. Kuruppu, C.D. Kus, V. Lackey, T. Lang, K. Li, L. Lin, S. Lokajicek, M. Luchuk, S. Maan, K. Magill, S. Mann, W.A. Marshak, M.L. Martinez-Casales, M. Matveev, V. Mayes, B. Méndez, D.P. Messier, M.D. Meyer, H. Miao, T. Miller, W.H. Mishra, S.R. Mislivec, A. Mohanta, R. Moren, A. Morozova, A. Mualem, L. Muether, M. Mufson, S. Mulder, K. Murphy, R. Musser, J. Naples, D. Nayak, N. Nelson, J.K. Nichol, R. Nikseresht, G. Niner, E. Norman, A. Norrick, A. Nosek, T. Olshevskiy, A. Olson, T. Paley, J. Patterson, R.B. Pawloski, G. Petrova, O. Petti, R. Plunkett, R.K. Rafique, A. Psihas, F. Radovic, A. Raj, V. Ramson, B. Rebel, B. Rojas, P. Ryabov, V. Samoylov, O. Sanchez, M.C. Sánchez Falero, S. Seong, I.S. Shanahan, P. Sheshukov, A. Singh, P. Singh, V. Smith, E. Smolik, J. Snopok, P. Solomey, N. Sousa, A. Soustruznik, K. Strait, M. Argonne National Laboratory ArgonneIL60439 United States Universidad del Atlantico Carrera 30 No. 8-49 Atlantico Puerto Colombia Colombia Department of Physics Institute of Science Banaras Hindu University Varanasi221 005 India California Institute of Technology PasadenaCA91125 United States Charles University Faculty of Mathematics and Physics Institute of Particle and Nuclear Physics Prague Czech Republic Department of Physics University of Cincinnati CincinnatiOH45221 United States Department of Physics Cochin University of Science and Technology Kochi682 022 India Department of Physics Colorado State University Fort CollinsCO80523-1875 United States Czech Technical University in Prague Brehova 7 Prague 1115 19 Czech Republic University of Dallas 1845 E Northgate Drive IrvingTX75062 United States Department of Physics and Astrophysics University of Delhi Delhi110007 India Fermi National Accelerator Laboratory BataviaIL60510 United States Instituto de Física Universidade Federal de Goiás Goiás Goiânia74690-900 Brazil Department of Physics IIT Guwahati Guwahati781 039 India Department of Physics Harvard University CambridgeMA02138 United States Department of Physics University of Houston HoustonTX77204 United States School of Physics University of Hyderabad Hyderabad500 046 India Department of Physics IIT Hyderabad Hyderabad502 205 India Illinois Institute of Technology ChicagoIL60616 United States Indiana University BloomingtonIN47405 United States Institute of Computer Science The Czech Academy of Sciences Prague182 07 Czech Republic Institute for Nuclear Research of Russia Academy of Sciences 7a 60th October Anniversary prospect Moscow117312 Russia Institute of Physics The Czech Academy of Sciences Prague182 21 Czech Republic Department of Physics and Astronomy Iowa State University AmesIA50011 United States Department of Physics and Astronomy University of California at Irvine IrvineCA92697 United St

The two-detector design of the NOvA neutrino oscillation experiment, in which two functionally identical detectors are exposed to an intense neutrino beam, aids in canceling leading order effects of cross-section uncertainties. However, limited knowledge of neutrino interaction cross sections still gives rise to some of the largest systematic uncertainties in current oscillation measurements. We show contemporary models of neutrino interactions to be discrepant with data from NOvA, consistent with discrepancies seen in other experiments. Adjustments to neutrino interaction models in GENIE are presented, creating an effective model that improves agreement with our data. We also describe systematic uncertainties on these models, including uncertainties on multi-nucleon interactions from a newly developed procedure using NOvA near detector data. Copyright © 2020, The Authors. All rights reserved.

关键词： Neutrons

Recent results in CDT quantum gravity 14

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Recent results in CDT quantum gravity

14th Marcel Grossman Meeting On Recent Developments in Theoretical and Experimental General Relativity, Astrophysics and Relativistic Field Theories

作者： Ambjorn, Jan Coumbe, Daniel Gizbert-Studnicki, Jakub Jurkiewicz, Jerzy Niels Bohr Institute Copenhagen University Blegdamsvej 17 CopenhagenDK-2100 Denmark IMAPP Radboud University PO Box 9010 Nijmegen Netherlands Faculty of Physics Astronomy and Applied Computer Science Jagiellonian University ul. prof. Stanislawa Lojasiewicza 11 KrakowPL 30-048 Poland

ISBN: (纸本)9789813226593

We review some recent results from the causal dynamical triangulation (CDT) approach to quantum gravity. We review recent observations of dimensional reduction at a number of previously undetermined points in the parameter space of CDT, and discuss their possible relevance to the asymptotic safety scenario. We also present an updated phase diagram of CDT, discussing properties of a newly discovered phase and its possible relation to a signature change of the metric. Copyright © 2018 by the *** rights reserved.

关键词： Triangulation

Fabrication of omnidirectional anti-reflection and super hydrophilicity SiO 2 nanorods by oblique angle deposition

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Materials Today: Proceedings 2018年第6期5卷 14140-14144页

作者： T. Plirdpring M. Horprathum C. Sangsawang T. Boonpichayapha B. Samransuksamer T. Jutarosaga C. Chananonnawathorn S. Limwichean N. Nuntawong P. Eiamchai Thermoelectric and Nanotechnology Research Center Faculty of Science and Technology Rajamangala University of Technology Suvarnabhumi HuntraPhranakhon Si Ayutthaya 13000 Thailand National Electronics and Computer Technology Center National Science and Technology Development Agency PathumThani 12120 Thailand Department of Physics Faculty of Science King Mongkut’s University of Technology Thonburi Bangkok 10140 Thailand

Growth of silicon dioxide (SiO 2 ) nanorods were fabricated via electron beam evaporation with oblique angle deposition technique approach at different film thickness. The morphologies, optical and wettability properties were characterized by field-emission scanning electron microscopy, spectrophotometry with angle dependence technique and contact angle measurement, respectively. Compared with that on the SiO 2 thin films, the transmission on the SiO 2 nanorods is significantly improved. The transmission is decreased with the height of the SiO 2 nanorods. In addition, the result indicated that the SiO 2 nanorods provide enhancement wettability which can function as the super-hydrophilicity surface. The experiment analysis of the thickness dependence omnidirectional anti-reflection and super-hydrophilic characteristics will benefit the design of self-cleaning glass application.

关键词： SiO 2 Nanorods Oblique angle deposition Omidirectional anti-reflection Super-hydrophilic

Monte Carlo N-Particle simulations of an underwater chemical threats detection system using neutron activation analysis

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arXiv 2019年

作者： Sibczyński, P. Silarski, M. Bezshyyko, O. Ivanyan, V. Kubicz, E. Niedźwiecki, Sz. Moskal, P. Raj, J. Sharma, S. Trofimiuk, O. National Centre for Nuclear Research Electronics and Detection Systems Division A. Soltana 7 Otwock05-400 Poland Jagiellonian University Faculty of Physics Astronomy and Applied Computer Science S. Lojasiewicza 11 Kraków30-348 Poland Taras Shevchenko National University of Kyiv Volodymyrska 60 Kyiv01033 Ukraine

In this paper we present Monte Carlo N-Particle (MCNP) simulations of the system for underwater threat detection using neutron activation analysis developed in the SABAT project. The simulated system is based on a D-T neutron generator emitting 14 MeV neutrons without associated α particle detection and equipped with a LaBr3:Ce scintillation detector offering superior energy resolution and allowing for precise identification of activation γ quanta. The performed simulations show that using the neutron activation analysis method with the designed geometry we are able to identify γ-rays from hydrogen, carbon, sulphur and chlorine originating from mustard gas in a sea water environment. Our results show that the most efficient way of mustard gas detection is to compare the integral peak ratio for Cl and H. Copyright © 2019, The Authors. All rights reserved.

关键词： Monte Carlo methods

Dark Energy Survey Year 1 Results: Cosmological Constraints from Cluster Abundances, Weak Lensing, and Galaxy Correlations

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Physical Review Letters 2021年第14期126卷 141301-141301页

作者： C. To E. Krause E. Rozo H. Wu D. Gruen R. H. Wechsler T. F. Eifler E. S. Rykoff M. Costanzi M. R. Becker G. M. Bernstein J. Blazek S. Bocquet S. L. Bridle R. Cawthon A. Choi M. Crocce C. Davis J. DeRose A. Drlica-Wagner J. Elvin-Poole X. Fang A. Farahi O. Friedrich M. Gatti E. Gaztanaga T. Giannantonio W. G. Hartley B. Hoyle M. Jarvis N. MacCrann T. McClintock V. Miranda M. E. S. Pereira Y. Park A. Porredon J. Prat M. M. Rau A. J. Ross S. Samuroff C. Sánchez I. Sevilla-Noarbe E. Sheldon M. A. Troxel T. N. Varga P. Vielzeuf Y. Zhang J. Zuntz T. M. C. Abbott M. Aguena A. Amon J. Annis S. Avila E. Bertin S. Bhargava D. Brooks D. L. Burke A. Carnero Rosell M. Carrasco Kind J. Carretero C. Chang C. Conselice L. N. da Costa T. M. Davis S. Desai H. T. Diehl J. P. Dietrich S. Everett A. E. Evrard I. Ferrero B. Flaugher P. Fosalba J. Frieman J. García-Bellido R. A. Gruendl G. Gutierrez S. R. Hinton D. L. Hollowood K. Honscheid D. Huterer D. J. James T. Jeltema R. Kron K. Kuehn N. Kuropatkin M. Lima M. A. G. Maia J. L. Marshall F. Menanteau R. Miquel R. Morgan J. Muir J. Myles A. Palmese F. Paz-Chinchón A. A. Plazas A. K. Romer A. Roodman E. Sanchez B. Santiago V. Scarpine S. Serrano M. Smith E. Suchyta M. E. C. Swanson G. Tarle D. Thomas D. L. Tucker J. Weller W. Wester R. D. Wilkinson Department of Physics Stanford University 382 Via Pueblo Mall Stanford California 94305 USA Kavli Institute for Particle Astrophysics & Cosmology P. O. Box 2450 Stanford University Stanford California 94305 USA SLAC National Accelerator Laboratory Menlo Park California 94025 USA Department of Astronomy/Steward Observatory University of Arizona 933 North Cherry Avenue Tucson Arizona 85721-0065 USA Department of Physics University of Arizona Tucson Arizona 85721 USA Center for Cosmology and Astro-Particle Physics The Ohio State University Columbus Ohio 43210 USA Department of Physics Boise State University Boise Idaho 83725 USA INAF-Osservatorio Astronomico di Trieste via G. B. Tiepolo 11 I-34143 Trieste Italy Institute for Fundamental Physics of the Universe Via Beirut 2 34014 Trieste Italy Argonne National Laboratory 9700 South Cass Avenue Lemont Illinois 60439 USA Department of Physics and Astronomy University of Pennsylvania Philadelphia Pennsylvania 19104 USA Institute of Physics Laboratory of Astrophysics École Polytechnique Fédérale de Lausanne (EPFL) Observatoire de Sauverny 1290 Versoix Switzerland Faculty of Physics Ludwig-Maximilians-Universität Scheinerstr. 1 81679 Munich Germany Jodrell Bank Center for Astrophysics School of Physics and Astronomy University of Manchester Oxford Road Manchester M13 9PL United Kingdom Physics Department 2320 Chamberlin Hall University of Wisconsin-Madison 1150 University Avenue Madison Wisconsin 53706-1390 Institut d’Estudis Espacials de Catalunya (IEEC) 08034 Barcelona Spain Institute of Space Sciences (ICE CSIC) Campus UAB Carrer de Can Magrans s/n 08193 Barcelona Spain Department of Astronomy University of California Berkeley 501 Campbell Hall Berkeley California 94720 USA Santa Cruz Institute for Particle Physics Santa Cruz California 95064 USA Department of Astronomy and Astrophysics University of Chicago Chicago Illinois 60637 USA Fermi National Accelerator Laboratory P. O. Box 500

We present the first joint analysis of cluster abundances and auto or cross-correlations of three cosmic tracer fields: galaxy density, weak gravitational lensing shear, and cluster density split by optical richness. From a joint analysis (4×2pt+N) of cluster abundances, three cluster cross-correlations, and the auto correlations of the galaxy density measured from the first year data of the Dark Energy Survey, we obtain Ωm=0.305−0.038+0.055 and σ8=0.783−0.054+0.064. This result is consistent with constraints from the DES-Y1 galaxy clustering and weak lensing two-point correlation functions for the flat νΛCDM model. Consequently, we combine cluster abundances and all two-point correlations from across all three cosmic tracer fields (6×2pt+N) and find improved constraints on cosmological parameters as well as on the cluster observable-mass scaling relation. This analysis is an important advance in both optical cluster cosmology and multiprobe analyses of upcoming wide imaging surveys.

关键词： Cosmological parameters Cosmology Dark energy Dark matter

High-energy reconstruction for single and double cascades using the KM3NeT detector 37

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High-energy reconstruction for single and double cascades us...

37th International Cosmic Ray Conference, ICRC 2021

作者： van Eeden, Thijs Seneca, Jordan Heijboer, Aart Ageron, M. Aiello, S. Albert, A. Alshamsi, M. Alves Garre, S. Aly, Z. Ambrosone, A. Ameli, F. Andre, M. Androulakis, G. Anghinolfi, M. Anguita, M. Anton, G. Ardid, M. Ardid, S. Assal, W. Aublin, J. Bagatelas, C. Baret, B. du Pree, S. Basegmez Bendahman, M. Benfenati, F. Berbee, E. van den Berg, A.M. Bertin, V. Beurthey, S. van Beveren, V. Biagi, S. Billault, M. Bissinger, M. Boettcher, M. Bou Cabo, M. Boumaaza, J. Bouta, M. Boutonnet, C. Bouvet, G. Bouwhuis, M. Bozza, C. Brânzaş, H. Bruijn, R. Brunner, J. Bruno, R. Buis, E. Buompane, R. Busto, J. Caiffi, B. Caillat, L. Calvo, D. Campion, S. Capone, A. Carduner, H. Carretero, V. Castaldi, P. Celli, S. Cereseto, R. Chabab, M. Champion, C. Chau, N. Chen, A. Cherubini, S. Chiarella, V. Chiarusi, T. Circella, M. Cocimano, R. Coelho, J.A.B. Coleiro, A. Colomer Molla, M. Colonges, S. Coniglione, R. Cosquer, A. Coyle, P. Cresta, M. Creusot, A. Cruz, A. Cuttone, G. D’Amico, A. Dallier, R. De Martino, B. De Palma, M. Di Palma, I. Díaz, A.F. Diego-Tortosa, D. Distefano, C. Domi, A. Donzaud, C. Dornic, D. Dörr, M. Drouhin, D. Eberl, T. Eddyamoui, A. van Eeden, T. van Eijk, D. El Bojaddaini, I. Eljarrari, H. Elsaesser, D. Enzenhöfer, A. Espinosa, V. Fermani, P. Ferrara, G. Filipović, M.D. Filippini, F. Fransen, J. Fusco, L.A. Gajanana, D. Gal, T. García Méndez, J. Garcia Soto, A. Garçon, E. Garufi, F. Gatius, C. Geißelbrecht, N. Gialanella, L. Giorgio, E. Gozzini, S.R. Gracia, R. Graf, K. Grella, G. Guderian, D. Guidi, C. Guillon, B. Gutiérrez, M. Haefner, J. Hallmann, S. Hamdaoui, H. van Haren, H. Heijboer, A. Hekalo, A. Hennig, L. Henry, S. Hernández-Rey, J.J. Hofestädt, J. Huang, F. Idrissi Ibnsalih, W. Ilioni, A. Illuminati, G. James, C.W. Janezashvili, D. Jansweijer, P. de Jong, M. de Jong, P. Jung, B.J. Kadler, M. Kalaczyński, P. Kalekin, O. Katz, U.F. Kayzel, F. Keller, P. Khan Chowdhury, N.R. Nikhef Science Park 105 Amsterdam1098 XG Netherlands Aix Marseille Univ CNRS IN2P3 CPPM Marseille France INFN Sezione di Catania Via Santa Sofia 64 Catania95123 Italy Université de Strasbourg CNRS IPHC UMR 7178 StrasbourgF-67000 France Université de Paris CNRS Astroparticule et Cosmologie ParisF-75013 France IFIC - Instituto de Física Corpuscular CSIC - Universitat de València c/Catedrático José Beltrán 2 Paterna Valencia46980 Spain INFN Sezione di Napoli Complesso Universitario di Monte S. Angelo Via Cintia ed. G Napoli80126 Italy Università di Napoli "Federico II" Dip. Scienze Fisiche "E. Pancini" Complesso Universitario di Monte S. Angelo Via Cintia ed. G Napoli80126 Italy INFN Sezione di Roma Piazzale Aldo Moro 2 Roma00185 Italy Universitat Politècnica de Catalunya Laboratori d’Aplicacions Bioacústiques Centre Tecnològic de Vilanova i la Geltrú Avda. Rambla Exposició s/n Vilanova i la Geltrú08800 Spain NCSR Demokritos Institute of Nuclear and Particle Physics Ag. Paraskevi Attikis Athens15310 Greece INFN Sezione di Genova Via Dodecaneso 33 Genova16146 Italy University of Granada Dept. of Computer Architecture and Technology CITIC Granada18071 Spain Friedrich-Alexander-Universität Erlangen-Nürnberg Erlangen Centre for Astroparticle Physics Erwin-Rommel-Straße 1 Erlangen91058 Germany Universitat Politècnica de València Instituto de Investigación para la Gestión Integrada de las Zonas Costeras C/Paranimf 1 Gandia46730 Spain Nikhef National Institute for Subatomic Physics PO Box 41882 Amsterdam1009 DB Netherlands University Mohammed V in Rabat Faculty of Sciences 4 av. Ibn Battouta B.P. 1014 RabatR.P. 10000 Morocco INFN Sezione di Bologna v.le C. Berti-Pichat 6/2 Bologna40127 Italy Dipartimento di Fisica INFN Sezione di Padova Università di Padova PadovaI-35131 Italy Università di Bologna Dipartimento di Fisica e Astronomia v.le C. Berti-Pichat 6/2 Bologna40127 Italy KVI-CART University of Groningen Gro

The discovery of a high-energy cosmic neutrino flux has paved the way for the field of neutrino astronomy. For a large part of the flux, the sources remain unidentified. The KM3NeT detector, which is under construction in the Mediterranean sea, is designed to determine their origin. KM3NeT will instrument a cubic kilometre of seawater with photomultiplier tubes that detect Cherenkov radiation from neutrino interaction products with nanosecond precision. For single cascade event signatures, KM3NeT already showed that it can reach degree-level resolutions, greatly increasing the use of these neutrinos for astronomy. In this contribution, we further refine the cascade reconstruction by making a more detailed model of the neutrinos events and including additional information on the hit times. The arrival time of light can be used to improve the identification of double cascade signatures from tau neutrinos, and the angular resolution of both single and double cascade signatures. Sub-degree resolution is achieved in both cases. © Copyright owned by the author(s).

关键词： Photomultipliers