The Pierre Auger CollaborationAab, A.A.AabAbreu, P.P.AbreuAGLIETTA, MARCOMARCOAGLIETTAAhn, E. J.E. J.AhnSamarai, I. AlI. AlSamaraiAlbuquerque, I. F. M.I. F. M.AlbuquerqueAllekotte, I.I.AllekotteAllison, P.P.AllisonAlmela, A.A.AlmelaAlvarez Castillo, J.J.Alvarez CastilloAlvarez-Muñiz, J.J.Alvarez-MuñizAlves Batista, R.R.Alves BatistaAmbrosio, M.M.AmbrosioAminaei, A.A.AminaeiAnchordoqui, L.L.AnchordoquiAndringa, S.S.AndringaAramo, C.C.AramoArqueros, F.F.ArquerosArsene, N.N.ArseneAsorey, H.H.AsoreyAssis, P.P.AssisAublin, J.J.AublinAve, M.M.AveAvenier, M.M.AvenierAvila, G.G.AvilaAwal, N.N.AwalBadescu, A. M.A. M.BadescuBarber, K. B.K. B.BarberBäuml, J.J.BäumlBaus, C.C.BausBeatty, J. J.J. J.BeattyBecker, K. H.K. H.BeckerBellido, J. A.J. A.BellidoBerat, C.C.BeratBertaina, M. E.M. E.BertainaBertou, X.X.BertouBiermann, P. L.P. L.BiermannBilloir, P.P.BilloirBlaess, S. G.S. G.BlaessBlanco, A.A.BlancoBlanco, M.M.BlancoBlazek, J.J.BlazekBleve, C.C.BleveBlümer, H.H.BlümerBoháčová, M.M.BoháčováBoncioli, D.D.BoncioliBonifazi, C.C.BonifaziBorodai, N.N.BorodaiBrack, J.J.BrackBrancus, I.I.BrancusBridgeman, A.A.BridgemanBrogueira, P.P.BrogueiraBrown, W. C.W. C.BrownBuchholz, P.P.BuchholzBueno, A.A.BuenoBuitink, S.S.BuitinkBuscemi, M.M.BuscemiCaballero-Mora, K. S.K. S.Caballero-MoraCaccianiga, B.B.CaccianigaCaccianiga, L.L.CaccianigaCandusso, M.M.CandussoCaramete, L.L.CarameteCaruso, R.R.CarusoCASTELLINA, ANTONELLAANTONELLACASTELLINACataldi, G.G.CataldiCazon, L.L.CazonCester, R.R.CesterChavez, A. G.A. G.ChavezChiavassa, A.A.ChiavassaChinellato, J. A.J. A.ChinellatoChudoba, J.J.ChudobaCilmo, M.M.CilmoClay, R. W.R. W.ClayCocciolo, G.G.CoccioloColalillo, R.R.ColalilloColeman, A.A.ColemanCollica, L.L.CollicaColuccia, M. R.M. R.ColucciaConceição, R.R.ConceiçãoContreras, F.F.ContrerasCooper, M. J.M. J.CooperCordier, A.A.CordierCoutu, S.S.CoutuCovault, C. E.C. E.CovaultCronin, J.J.CroninDallier, R.R.DallierDaniel, B.B.DanielDasso, S.S.DassoDaumiller, K.K.DaumillerDawson, B. R.B. R.Dawsonde Almeida, R. M.R. M.de Almeidade Jong, S. J.S. J.de JongDe Mauro, G.G.De Maurode Mello Neto, J. R. T.J. R. T.de Mello NetoDe Mitri, I.I.De Mitride Oliveira, J.J.de Oliveirade Souza, V.V.de Souzadel Peral, L.L.del PeralDeligny, O.O.DelignyDembinski, H.H.DembinskiDhital, N.N.DhitalDi Giulio, C.C.Di GiulioDi Matteo, A.A.Di MatteoDiaz, J. C.J. C.DiazDíaz Castro, M. L.M. L.Díaz CastroDiogo, F.F.DiogoDobrigkeit, C.C.DobrigkeitDocters, W.W.DoctersD'Olivo, J. C.J. C.D'OlivoDorofeev, A.A.DorofeevDorosti Hasankiadeh, Q.Q.Dorosti HasankiadehDova, M. T.M. T.DovaEbr, J.J.EbrEngel, R.R.EngelErdmann, M.M.ErdmannErfani, M.M.ErfaniEscobar, C. O.C. O.EscobarEspadanal, J.J.EspadanalEtchegoyen, A.A.EtchegoyenFalcke, H.H.FalckeFang, K.K.FangFarrar, G.G.FarrarFauth, A. C.A. C.FauthFazzini, N.N.FazziniFerguson, A. P.A. P.FergusonFernandes, M.M.FernandesFick, B.B.FickFigueira, J. M.J. M.FigueiraFilevich, A.A.FilevichFilipčič, A.A.FilipčičFox, B. D.B. D.FoxFratu, O.O.FratuFreire, M. M.M. M.FreireFuchs, B.B.FuchsFujii, T.T.FujiiGarcía, B.B.GarcíaGarcia-Pinto, D.D.Garcia-PintoGate, F.F.GateGemmeke, H.H.GemmekeGherghel-Lascu, A.A.Gherghel-LascuGhia, P. L.P. L.GhiaGiaccari, U.U.GiaccariGiammarchi, M.M.GiammarchiGiller, M.M.GillerGłas, D.D.GłasGlaser, C.C.GlaserGlass, H.H.GlassGolup, G.G.GolupGómez Berisso, M.M.Gómez BerissoGómez Vitale, P. F.P. F.Gómez VitaleGonzález, N.N.GonzálezGookin, B.B.GookinGordon, J.J.GordonGORGI, AlessioAlessioGORGIGorham, P.P.GorhamGouffon, P.P.GouffonGriffith, N.N.GriffithGrillo, A. F.A. F.GrilloGrubb, T. D.T. D.GrubbGuarino, F.F.GuarinoGuedes, G. P.G. P.GuedesHampel, M. R.M. R.HampelHansen, P.P.HansenHarari, D.D.HarariHarrison, T. A.T. A.HarrisonHartmann, S.S.HartmannHarton, J. L.J. L.HartonHaungs, A.A.HaungsHebbeker, T.T.HebbekerHeck, D.D.HeckHeimann, P.P.HeimannHemery, N.N.HemeryHerve, A. E.A. E.HerveHill, G. C.G. C.HillHojvat, C.C.HojvatHollon, N.N.HollonHolt, E.E.HoltHomola, P.P.HomolaHörandel, J. R.J. R.HörandelHorvath, P.P.HorvathHrabovský, M.M.HrabovskýHuber, D.D.HuberHuege, T.T.HuegeInsolia, A.A.InsoliaIsar, P. G.P. G.IsarJandt, I.I.JandtJansen, S.S.JansenJarne, C.C.JarneJohnsen, J. A.J. A.JohnsenJosebachuili, M.M.JosebachuiliKääpä, A.A.KääpäKambeitz, O.O.KambeitzKampert, K. H.K. H.KampertKasper, P.P.KasperKatkov, I.I.KatkovKégl, B.B.KéglKeilhauer, B.B.KeilhauerKeivani, A.A.KeivaniKemp, E.E.KempKieckhafer, R. M.R. M.KieckhaferKlages, H. O.H. O.KlagesKleifges, M.M.KleifgesKleinfeller, J.J.KleinfellerKrause, R.R.KrauseKrohm, N.N.KrohmKrömer, O.O.KrömerKuempel, D.D.KuempelKukec Mezek, G.G.Kukec MezekKunka, N.N.KunkaLaHurd, D.D.LaHurdLatronico, L.L.LatronicoLauer, R.R.LauerLauscher, M.M.LauscherLautridou, P.P.LautridouLe Coz, S.S.Le CozLebrun, D.D.LebrunLebrun, P.P.LebrunLeigui de Oliveira, M. A.M. A.Leigui de OliveiraLetessier-Selvon, A.A.Letessier-SelvonLhenry-Yvon, I.I.Lhenry-YvonLink, K.K.LinkLopes, L.L.LopesLópez, R.R.LópezLópez Casado, A.A.López CasadoLouedec, K.K.LouedecLu, L.L.LuLucero, A.A.LuceroMalacari, M.M.MalacariMaldera, S.S.MalderaMallamaci, M.M.MallamaciMaller, J.J.MallerMandat, D.D.MandatMantsch, P.P.MantschMariazzi, A. G.A. G.MariazziMarin, V.V.MarinMariș, I. C.I. C.MarișMarsella, G.G.MarsellaMartello, D.D.MartelloMartin, L.L.MartinMartinez, H.H.MartinezMartínez Bravo, O.O.Martínez BravoMartraire, D.D.MartraireMasías Meza, J. J.J. J.Masías MezaMathes, H. J.H. J.MathesMathys, S.S.MathysMatthews, J.J.MatthewsMatthews, J. A. J.J. A. J.MatthewsMatthiae, G.G.MatthiaeMaurizio, D.D.MaurizioMayotte, E.E.MayotteMazur, P. O.P. O.MazurMedina, C.C.MedinaMedina-Tanco, G.G.Medina-TancoMeissner, R.R.MeissnerMello, V. B. B.V. B. B.MelloMelo, D.D.MeloMenshikov, A.A.MenshikovMESSINA, SergioSergioMESSINAMeyhandan, R.R.MeyhandanMicheletti, M. I.M. I.MichelettiMiddendorf, L.L.MiddendorfMinaya, I. A.I. A.MinayaMiramonti, L.L.MiramontiMitrica, B.B.MitricaMolina-Bueno, L.L.Molina-BuenoMollerach, S.S.MollerachMontanet, F.F.MontanetMorello, C.C.MorelloMostafá, M.M.MostafáMoura, C. A.C. A.MouraMuller, M. A.M. A.MullerMüller, G.G.MüllerMüller, S.S.MüllerMussa, R.R.MussaNavarra, G.G.NavarraNavas, S.S.NavasNecesal, P.P.NecesalNellen, L.L.NellenNelles, A.A.NellesNeuser, J.J.NeuserNguyen, P. H.P. H.NguyenNiculescu-Oglinzanu, M.M.Niculescu-OglinzanuNiechciol, M.M.NiechciolNiemietz, L.L.NiemietzNiggemann, T.T.NiggemannNitz, D.D.NitzNosek, D.D.NosekNovotny, V.V.NovotnyNožka, L.L.NožkaOchilo, L.L.OchiloOikonomou, F.F.OikonomouOlinto, A.A.OlintoPacheco, N.N.PachecoPakk Selmi-Dei, D.D.Pakk Selmi-DeiPalatka, M.M.PalatkaPallotta, J.J.PallottaPapenbreer, P.P.PapenbreerParente, G.G.ParenteParra, A.A.ParraPaul, T.T.PaulPech, M.M.PechPȩkala, J.J.PȩkalaPelayo, R.R.PelayoPepe, I. M.I. M.PepePerrone, L.L.PerronePetermann, E.E.PetermannPeters, C.C.PetersPetrera, S.S.PetreraPetrov, Y.Y.PetrovPhuntsok, J.J.PhuntsokPiegaia, R.R.PiegaiaPierog, T.T.PierogPieroni, P.P.PieroniPimenta, M.M.PimentaPirronello, V.V.PirronelloPlatino, M.M.PlatinoPlum, M.M.PlumPorcelli, A.A.PorcelliPorowski, C.C.PorowskiPrado, R. R.R. R.PradoPrivitera, P.P.PriviteraProuza, M.M.ProuzaPurrello, V.V.PurrelloQuel, E. J.E. J.QuelQuerchfeld, S.S.QuerchfeldQuinn, S.S.QuinnRautenberg, J.J.RautenbergRavel, O.O.RavelRavignani, D.D.RavignaniReinert, D.D.ReinertRevenu, B.B.RevenuRidky, J.J.RidkyRIGGI, SimoneSimoneRIGGIRisse, M.M.RisseRistori, P.P.RistoriRizi, V.V.RiziRodrigues de Carvalho, W.W.Rodrigues de CarvalhoRodriguez Fernandez, G.G.Rodriguez FernandezRodriguez Rojo, J.J.Rodriguez RojoRodríguez-Frías, M. D.M. D.Rodríguez-FríasRogozin, D.D.RogozinRosado, J.J.RosadoRoth, M.M.RothRoulet, E.E.RouletRovero, A. C.A. C.RoveroSaffi, S. J.S. J.SaffiSaftoiu, A.A.SaftoiuSalamida, F.F.SalamidaSalazar, H.H.SalazarSaleh, A.A.SalehSalesa Greus, F.F.Salesa GreusSalina, G.G.SalinaSánchez, F.F.SánchezSanchez-Lucas, P.P.Sanchez-LucasSantos, E.E.SantosSantos, E. M.E. M.SantosSarazin, F.F.SarazinSarkar, B.B.SarkarSarmento, R.R.SarmentoSato, R.R.SatoScarso, C.C.ScarsoSchauer, M.M.SchauerScherini, V.V.ScheriniSchieler, H.H.SchielerSchmidt, D.D.SchmidtScholten, O.O.ScholtenSchoorlemmer, H.H.SchoorlemmerSchovánek, P.P.SchovánekSchröder, F. G.F. G.SchröderSchulz, A.A.SchulzSchulz, J.J.SchulzSchumacher, J.J.SchumacherSciutto, S. J.S. J.SciuttoSEGRETO, ALBERTOALBERTOSEGRETOSettimo, M.M.SettimoShadkam, A.A.ShadkamShellard, R. C.R. C.ShellardSidelnik, I.I.SidelnikSigl, G.G.SiglSima, O.O.SimaŚmiałkowski, A.A.ŚmiałkowskiŠmída, R.R.ŠmídaSnow, G. R.G. R.SnowSommers, P.P.SommersSorokin, J.J.SorokinSquartini, R.R.SquartiniSrivastava, Y. N.Y. N.SrivastavaStanca, D.D.StancaStanič, S.S.StaničStapleton, J.J.StapletonStasielak, J.J.StasielakStephan, M.M.StephanStutz, A.A.StutzSuarez, F.F.SuarezSuomijärvi, T.T.SuomijärviSupanitsky, A. D.A. D.SupanitskySutherland, M. S.M. S.SutherlandSwain, J.J.SwainSzadkowski, Z.Z.SzadkowskiTaborda, O. A.O. A.TabordaTapia, A.A.TapiaTepe, A.A.TepeTheodoro, V. M.V. M.TheodoroTimmermans, C.C.TimmermansTodero Peixoto, C. J.C. J.Todero PeixotoToma, G.G.TomaTomankova, L.L.TomankovaTomé, B.B.ToméTonachini, A.A.TonachiniTorralba Elipe, G.G.Torralba ElipeTorres Machado, D.D.Torres MachadoTravnicek, P.P.TravnicekTrini, M.M.TriniUlrich, R.R.UlrichUnger, M.M.UngerUrban, M.M.UrbanValdés Galicia, J. F.J. F.Valdés GaliciaValiño, I.I.ValiñoValore, L.L.Valorevan Aar, G.G.van Aarvan Bodegom, P.P.van Bodegomvan den Berg, A. M.A. M.van den Bergvan Velzen, S.S.van Velzenvan Vliet, A.A.van VlietVarela, E.E.VarelaVargas Cárdenas, B.B.Vargas CárdenasVarner, G.G.VarnerVasquez, R.R.VasquezVázquez, J. R.J. R.VázquezVázquez, R. A.R. A.VázquezVeberič, D.D.VeberičVerzi, V.V.VerziVicha, J.J.VichaVidela, M.M.VidelaVillaseñor, L.L.VillaseñorVlcek, B.B.VlcekVorobiov, S.S.VorobiovWahlberg, H.H.WahlbergWainberg, O.O.WainbergWalz, D.D.WalzWatson, A. A.A. A.WatsonWeber, M.M.WeberWeidenhaupt, K.K.WeidenhauptWeindl, A.A.WeindlWerner, F.F.WernerWidom, A.A.WidomWiencke, L.L.WienckeWilczyński, H.H.WilczyńskiWinchen, T.T.WinchenWittkowski, D.D.WittkowskiWundheiler, B.B.WundheilerWykes, S.S.WykesYang, L.L.YangYapici, T.T.YapiciYushkov, A.A.YushkovZas, E.E.ZasZavrtanik, D.D.ZavrtanikZavrtanik, M.M.ZavrtanikZepeda, A.A.ZepedaZhu, Y.Y.ZhuZimmermann, B.B.ZimmermannZiolkowski, M.M.ZiolkowskiZong, Z.Z.ZongZuccarello, FrancescaFrancescaZuccarello2020-07-212020-07-212016http://hdl.handle.net/20.500.12386/26540The Pierre Auger Observatory has begun a major Upgrade of its already impressive capabilities, with an emphasis on improved mass composition determination using the surface detectors of the Observatory. Known as AugerPrime, the upgrade will include new 4 m$^2$ plastic scintillator detectors on top of all 1660 water-Cherenkov detectors, updated and more flexible surface detector electronics, a large array of buried muon detectors, and an extended duty cycle for operations of the fluorescence detectors. This Preliminary Design Report was produced by the Collaboration in April 2015 as an internal document and information for funding agencies. It outlines the scientific and technical case for AugerPrime. We now release it to the public via the arXiv server. We invite you to review the large number of fundamental results already achieved by the Observatory and our plans for the future. <P />ELETTRONICOenResearch reporthttps://arxiv.org/abs/1604.036372016arXiv160403637TFIS/01 - FISICA SPERIMENTALE