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362 results on '"Bormann, D."'

1. KATRIN: status and prospects for the neutrino mass and beyond

Author

Aker, M, Balzer, M, Batzler, D, Beglarian, A, Behrens, J, Berlev, A, Besserer, U, Biassoni, M, Bieringer, B, Block, F, Bobien, S, Bombelli, L, Bormann, D, Bornschein, B, Bornschein, L, Böttcher, M, Brofferio, C, Bruch, C, Brunst, T, Caldwell, TS, Carminati, M, Carney, RMD, Chilingaryan, S, Choi, W, Cremonesi, O, Debowski, K, Descher, M, Barrero, D Díaz, Doe, PJ, Dragoun, O, Drexlin, G, Edzards, F, Eitel, K, Ellinger, E, Engel, R, Enomoto, S, Felden, A, Fink, D, Fiorini, C, Formaggio, JA, Forstner, C, Fränkle, FM, Franklin, GB, Friedel, F, Fulst, A, Gauda, K, Gavin, AS, Gil, W, Glück, F, Grande, A, Grössle, R, Gugiatti, M, Gumbsheimer, R, Hannen, V, Hartmann, J, Haußmann, N, Helbing, K, Hickford, S, Hiller, R, Hillesheimer, D, Hinz, D, Höhn, T, Houdy, T, Huber, A, Jansen, A, Karl, C, Kellerer, J, King, P, Kleifges, M, Klein, M, Köhler, C, Köllenberger, L, Kopmann, A, Korzeczek, M, Kovalík, A, Krasch, B, Krause, H, Lasserre, T, La Cascio, L, Lebeda, O, Lechner, P, Lehnert, B, Le, TL, Lokhov, A, Machatschek, M, Malcherek, E, Manfrin, D, Mark, M, Marsteller, A, Martin, EL, Mazzola, E, Melzer, C, Mertens, S, Mostafa, J, Müller, K, Nava, A, Neumann, H, Niemes, S, Oelpmann, P, and Onillon, A

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, neutrino, neutrino mass, sterile neutrino, tritium beta decay, krypton, beyond standard model, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Nuclear & Particles Physics, Nuclear and plasma physics, Particle and high energy physics
Abstract

The Karlsruhe Tritium Neutrino (KATRIN) experiment is designed to measure a high-precision integral spectrum of the endpoint region of T2 β decay, with the primary goal of probing the absolute mass scale of the neutrino. After a first tritium commissioning campaign in 2018, the experiment has been regularly running since 2019, and in its first two measurement campaigns has already achieved a sub-eV sensitivity. After 1000 days of data-taking, KATRIN’s design sensitivity is 0.2 eV at the 90% confidence level. In this white paper we describe the current status of KATRIN; explore prospects for measuring the neutrino mass and other physics observables, including sterile neutrinos and other beyond-Standard-Model hypotheses; and discuss research-and-development projects that may further improve the KATRIN sensitivity.

Published
2022

2. KATRIN: Status and Prospects for the Neutrino Mass and Beyond

Author

Aker, M., Balzer, M., Batzler, D., Beglarian, A., Behrens, J., Berlev, A., Besserer, U., Biassoni, M., Bieringer, B., Block, F., Bobien, S., Bombelli, L., Bormann, D., Bornschein, B., Bornschein, L., Böttcher, M., Brofferio, C., Bruch, C., Brunst, T., Caldwell, T. S., Carminati, M., Carney, R. M. D., Chilingaryan, S., Choi, W., Cremonesi, O., Debowski, K., Descher, M., Barrero, D. Díaz, Doe, P. J., Dragoun, O., Drexlin, G., Edzards, F., Eitel, K., Ellinger, E., Engel, R., Enomoto, S., Felden, A., Fink, D., Fiorini, C., Formaggio, J. A., Forstner, C., Fränkle, F. M., Franklin, G. B., Friedel, F., Fulst, A., Gauda, K., Gavin, A. S., Gil, W., Glück, F., Grande, A., Grössle, R., Gugiatti, M., Gumbsheimer, R., Hannen, V., Hartmann, J., Haußmann, N., Helbing, K., Hickford, S., Hiller, R., Hillesheimer, D., Hinz, D., Höhn, T., Houdy, T., Huber, A., Jansen, A., Karl, C., Kellerer, J., King, P., Kleifges, M., Klein, M., Köhler, C., Köllenberger, L., Kopmann, A., Korzeczek, M., Kovalík, A., Krasch, B., Krause, H., Lasserre, T., La Cascio, L., Lebeda, O., Lechner, P., Lehnert, B., Le, T. L., Lokhov, A., Machatschek, M., Malcherek, E., Manfrin, D., Mark, M., Marsteller, A., Martin, E. L., Mazzola, E., Melzer, C., Mertens, S., Mostafa, J., Müller, K., Nava, A., Neumann, H., Niemes, S., Oelpmann, P., Onillon, A., Parno, D. S., Pavan, M., Pigliafreddo, A., Poon, A. W. P., Poyato, J. M. L., Pozzi, S., Priester, F., Puritscher, M., Radford, D. C., Ráliš, J., Ramachandran, S., Robertson, R. G. H., Rodejohann, W., Rodenbeck, C., Röllig, M., Röttele, C., Ryšavý, M., Sack, R., Saenz, A., Salomon, R. W. J., Schäfer, P., Schimpf, L., Schlösser, K., Schlösser, M., Schlüter, L., Schneidewind, S., Schrank, M., Schütz, A. K., Schwemmer, A., Sedlak, A., Šefčík, M., Sibille, V., Siegmann, D., Slezák, M., Spanier, F., Spreng, D., Steidl, M., Sturm, M., Telle, H. H., Thorne, L. A., Thümmler, T., Titov, N., Tkachev, I., Trigilio, P., Urban, K., Valerius, K., Vénos, D., Hernández, A. P. Vizcaya, Voigt, P., Weinheimer, C., Weiss, E., Welte, S., Wendel, J., Wiesinger, C., Wilkerson, J. F., Wolf, J., Wunderl, L., Wüstling, S., Wydra, J., Xu, W., Zadoroghny, S., and Zeller, G.

Subjects
Nuclear Experiment, Astrophysics - Cosmology and Nongalactic Astrophysics, High Energy Physics - Experiment, Physics - Instrumentation and Detectors
Abstract

The Karlsruhe Tritium Neutrino (KATRIN) experiment is designed to measure a high-precision integral spectrum of the endpoint region of T2 beta decay, with the primary goal of probing the absolute mass scale of the neutrino. After a first tritium commissioning campaign in 2018, the experiment has been regularly running since 2019, and in its first two measurement campaigns has already achieved a sub-eV sensitivity. After 1000 days of data-taking, KATRIN's design sensitivity is 0.2 eV at the 90% confidence level. In this white paper we describe the current status of KATRIN; explore prospects for measuring the neutrino mass and other physics observables, including sterile neutrinos and other beyond-Standard-Model hypotheses; and discuss research-and-development projects that may further improve the KATRIN sensitivity., Comment: Contribution to Snowmass 2021. 70 pages excluding references; 35 figures. Author list updated June 2023

Published
2022
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3. Spontaneous ordering as an intrinsic effect at the mesoscopic scale: A vibrational insight in (Zn,Be)Se by Raman scattering and first-principles calculations

Author

Pages, O., Postnikov, A. V., Chafi, A., Bormann, D., Simon, P., Firszt, F., Paszkowicz, W., and Tournie, E.

Subjects
Condensed Matter - Materials Science
Abstract

The recent finding of a 1-bond->2-phonon `percolation'-type behaviour in several random zincblende alloys, supporting an unsuspected 1-bond->2-mode behaviour in the bond length distribution, renews interest for a discussion of CuPt-type spontaneous ordering (CPSO) as a purely intrinsic effect. We investigate this key issue from both experimental (Raman scattering) and theoretical (first-principles bond length and phonon calculations) sides, focusing on Zn[1-x]Be[x]Se (02-phonon behaviour for the Be-Se species. Based on percolation, CPSO finds a previously missing natural explanation, at the mesosocopic scale. Also, the transfer of oscillator strength from the high- to the low-frequency Be-Se mode in the Raman spectra potentially emerges as a sensitive probe of CPSO in ZnBeSe. First-principles calculations indicate that the transfer is completed for the value of the long range order parameter of eta~0.5 in ZnBeSe2 (x~0.5), corresponding to a pure 1-bond->1-mode behaviour. With further ordering the alloy is forced to re-adopt a non-rewarding 1-bond->2-mode behaviour, due to the formation of ZnSe/BeSe micro-domains in the crystal. Therefore eta~0.5 appears as an intrinsic limit to CPSO in ZnBeSe2, and possibly in stoichiometric alloys in general., Comment: revised version on 16 pages; 7 unchanged figures

Published
2006

12. Contributor contact details

Author

Bettles, C.J., primary, Barnett, M.R., additional, Pekguleryuz, M.O., additional, Agnew, S.R., additional, Lapovok, R., additional, Estrin, Y., additional, Kaibyshev, R., additional, Grandfield, J.F., additional, Essadiqi, E., additional, Pung, I.-H., additional, Wells, M.A., additional, Beer, A.G., additional, Sillekens, W.H., additional, Bohlen, J., additional, Kurz, G., additional, Yi, S., additional, Letzig, D., additional, Behrens, B.-A., additional, Pfeiffer, I., additional, Knigge, J., additional, Luo, A.A., additional, Sachdev, A.K., additional, and Bormann, D., additional

Published
2012
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16. Inhomogeneous electric field-induced Raman scattering at ZnSe/GaAs interfaces

Author

Pages, O., Erguig, H., Laurenti, J.P., Certier, M., Bormann, D., Khelifa, B., and Briot, O.

Subjects
Quantum wells -- Research, Semiconductor lasers -- Research, Physics
Abstract

Research was conducted to examine the activation of inhomogeneous electric field-induced Raman scattering (IEFIRS) at ZnSe/GaAs interfaces. The inhomogeneous property of the electric field was taken into consideration which brings additional conditions to the ones predicted by perturbative and microscopic techniques. Results demonstrate that the activation of IEFIRS for electric fields at the interface oriented towards the layer seems to be effective only when the q component is in the direction of the gradient vector of the electric field magnitude.

Published
1999

21. An infrared dielectric function model for amorphous solids

Author

Brendel, R. and Bormann, D.

Subjects
Dielectrics -- Research, Numerical integration -- Usage, Amorphous substances -- Research, Physics
Abstract

Dielectric functions are commonly used to model infrared spectra. However, these functions do not have free parameters to model the shape of absorption lines, therefore resulting in a poor correlation between measured and calculated line shapes. A Gaussian model is suggested to remedy this situation. This dielectric function model is constructed by a convolution of a Gaussian function with the dielectric function of the harmonic oscillator model. It then provides a good description of the spectra of amorphous solids as well as ultrathin silicon oxide films.

Published
1992

29. Raman study of the random ZnTe–BeTe mixed crystal: Percolation model plus multimode decomposition.

Author

Pagès, O., Tite, T., Chafi, A., Bormann, D., Maksimov, O., and Tamargo, M. C.

Subjects
RESEARCH, SOLUTION (Chemistry), PERCOLATION, PHONONS, RAMAN effect, EPITAXY
Abstract

The Verleur and Barker-like multiphonon description proposed for the refined understanding of the two-mode transverse optical (TO) and longitudinal optical (LO) Raman responses from the stiff/short Be–Se bond in the percolation range (0.19<=Be<=0.81) of the random BeSe–ZnSe mixed crystal [O. Pagès et al., Phys. Rev. B 70, 155319 (2004)] is extended to the similar Be–Te bond in the percolation range of the random BeTe–ZnTe mixed crystal. Moreover this description is shown to remain valid just outside the percolation range, in spite of appearances. We deduce that it is not activated by the close intermixing of the stiff and soft continua at the mesoscopic scale but relies directly on the contrast in the bond properties at the microscopic scale. The whole study is supported by extensive ZnBeTe Raman data, and full contour modeling of the TO and LO Raman line shapes by using our phenomenological 1-bond→2-mode percolation model. Care is taken that our ZnBe(Se,Te) epitaxial layers undergo large substrate-induced residual biaxial strains at the two edges of the percolation range. This generates significant phonon shifts, which have to be taken into account. [ABSTRACT FROM AUTHOR]

Published
2006
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30. Be–Se double-phonon behavior in Zn1-x-yMgyBexSe alloy.

Author

Pagès, O., Ajjoun, M., Bormann, D., and Tournié, E.

Subjects
PHONONS, SPHALERITE, RAMAN effect, PERCOLATION theory, CRYSTALS, BERYLLIUM
Abstract

The longitudinal optical (LO) and transverse optical (TO) phonons of zincblende Zn1-x-yMgyBexSe with x,y∼0.15 are identified by Raman scattering. The Be–Se region exhibits a two-mode behavior similar to that observed with the random Zn1-xBex(Se,Te) systems. This indicates that the percolation picture set for the latter mixed crystals with contrasted bond stiffness extends to Be-based multinaries. Accordingly the low- and high-frequency modes refer to Be–Se bonds within the Be-rich hard-like region and the (Zn,Mg)-rich soft-like one, respectively. Besides, we derive the (x,y) values together with the fraction p of Be atoms in the hard-like region from combined contour modeling of the TO and LO Raman line shapes. We find p∼x, as in the ZnBe(Se,Te) references. We deduce that the Be incorporation is random in ZnMgBeSe. © 2004 American Institute of Physics. [ABSTRACT FROM AUTHOR]

Published
2004
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31. Raman study of Zn[sub 1-x]Be[sub x]Se/GaAs systems with low Be content (x≤0.20).

Author

Page`s, O., Ajjoun, M., Bormann, D., Chauvet, C., Tournie´, E., Faurie, J. P., and Gorochov, O.

Subjects
PHONONS, ZINC compounds, RAMAN effect
Abstract

We present an experimental and theoretical investigation of the Raman line shape of long-wavelength phonons with longitudinal optical (LO) symmetry from both sides of Zn[sub 1-x]Be[sub x]Se/GaAs (001) heterojunctions with special emphasis on samples with low Be content (x≤0.20). First the built-in p-type LO phonon-plasmon (LO-P) coupled mode at the near-interfacial substrate is used as a sensitive probe to investigate the interfacial quality. The corresponding hole gas is reinforced when the ZnBeSe layers are nominally p doped by nitrogen. This provides clear evidence for effective hole transfer across the junction, and thereby indicates a minimized density of interfacial defects. In the nitrogen-doped layers hole densities as high as 10[sup 17] cm[sup -3], in accordance with capacitance-voltage measurements, are directly inferred from clear weakening of the ZnSe-like LO mode due to LO-P coupling. Concerning the intrinsic properties of the alloys, we demonstrate that the asymmetric broadening of the ZnSe-like LO mode is determined by topological disorder only, and not by other possible mechanisms such as structural disorder, nonhomogeneity in the alloy composition, a distribution of tensile strain, or a Fano-type interference. This reveals a high structural quality that parallels the high interfacial quality. We also show that a spatial correlation model with Gaussian distribution applies to Zn[sub 1-x]Be[sub x]Se. Most of this study is supported by a quantitative treatment. We extend the phenomenological approach of Hon and Faust to equations of motion and polarization derived from the modified-random-element-isodisplacement model in order to achieve line shape analysis of the alloy-related LO and LO-P modes. [ABSTRACT FROM AUTHOR]

Published
2002

32. Be-Se double-phonon behavior in Zn(sub 1-x-y)Mg(sub y)Be(sub x)Se alloy

Author

Pages, O., Ajjoun, M., Bormann, D., and Tournie, E.

Subjects
Raman effect -- Research, Phonons -- Research, Selenium compounds -- Research, Selenium compounds -- Optical properties, Beryllium -- Research, Beryllium -- Optical properties, Physics
Abstract

The longitudinal optical (LO) and transverse optical (TO) phonos of zincblende Zn(sub 1-x-y)Mg(sub y)Be(sub x)Se with x,y~0.15 are identified by Raman scattering. The Be-Se region exhibits a two-mode behavior similar to that observed with the random Zn(sub 1-x)Be(sub x)(Se,Te) systems.

Published
2004

33. Raman study of Zn(sub 1-x)Be(sub x)Se/GaAs systems with low Be content (x<=0.20)

Author

Pages, O., Ajjoun, M., Bormann, D., Chauvet, C., Tournie, E., Gorochov, O., and Faurie, J.P.

Subjects
Gallium arsenide -- Research, Gallium arsenide -- Optical properties, Gallium arsenide -- Electric properties, Nonferrous metals -- Research, Nonferrous metals -- Optical properties, Nonferrous metals -- Electric properties, Raman spectroscopy -- Usage, Physics
Abstract

Raman spectroscopy is employed as a sensitive probe to investigate in Zn(sub 1-x)Be(sub x)Se/GaAs systems whether or not II-IV lattice strengthening due to low Be incorporation (x

Published
2002

36. Time-Resolved Raman Studies on Al2O3 : Cr3+: Lifetime Measurements of the Excited State Transition Ē→2Ā

Author

Tobon-Correa, Y.A., Bormann, D., Canizares, A., Raimboux, N., Simon, P., Conditions Extrêmes et Matériaux : Haute Température et Irradiation (CEMHTI), Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université d'Orléans (UO), and ANR-07-BLAN-0282,RAMIRIS,RAMan sous IRradiation In-Situ(2007)

Subjects
[CHIM.MATE]Chemical Sciences/Material chemistry, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2011

37. Characterization and Simulation of High-Speed-Deformation-Processes

Author

Bach, F.-W., Bormann, D., Engelhardt, M., Kiliclar, Y., Reese, S., Schwarze, M., Vladimirov, I., and von Senden genannt Haverkamp, H.

Subjects
deep drawing, material properties, simulation
Abstract

The combination of the processes deep drawing and electromagnetic pulse forming is a promising way to cope with the ever higher complexity of new sheet metal designs. A cooperation between the Institute of Materials Science (IW) of the Leibniz Universität Hannover and the Institute of Applied Mechanics (IFAM) of the RWTH Aachen is investigating these processes both experimental and in simulation. Aim is the characterization of the combined process. Therefore the material properties of the investigated aluminum alloy EN AW 6082 T6 have to be determined quasi-static as well as at high speed. These properties are then used as a basic for the simulations. Anisotropic behaviors as well as dynamic hardening effects are investigated in the quasi-static state. Several experiments for analyzing "Bauschinger" respectively "Ratcheting effects" have been conducted resulting in a new measuring set-up for thin sheets. For the determination of high speed forming limit diagrams a novel testing device on the basis of the Nakajima-test has been developed allowing for strain rates of approximately 10^3 s^-1. Both testing methods are described in this paper; the results are then used to adapt the simulation models for the combined processes. The high speed deformation process is simulated by means of finite elements using a material model developed at the IFAM. The finite strain constitutive model combines nonlinear kinematic and isotropic hardening and is derived in a thermodynamic setting. It is based on the multiplicative split of the deformation gradient in the context of hyperelasticity. The kinematic hardening component represents a continuum extension of the classical rheological model of Armstrong-Frederick kinematic hardening which is widely adopted as capable of representing the above metal hardening effects. To prevent locking of the simulated thin sheets a new eight-node solid-shell finite element based on reduced integration with hourglass stabilization developed at IFAM has been used. With these features it was possible to simulate the Bauschinger effect obtained by the previous experiments.

Published
2010
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39. Mutation von GDF-5 steigert seine Fähigkeit zur ektopen Knochenbildung in einem beta-TCP Scaffold

Author

Kasten, P., Beyen, I., Bormann, D., Ploeger, F., and Richter, W.

Subjects
ddc: 610, 610 Medical sciences, Medicine
Abstract

Fragestellung: Für den Wachstumsfaktor GDF-5 werden schwächere osteoinduktive Effekte auf multipotente Vorläuferzellen berichtet als für andere Mitglieder der bone morphogenetic protein (BMP)-Familie wie z. B. BMP-2. Eine Ursache hierfür könnte die bevorzugte Bindung von[for full text, please go to the a.m. URL], Deutscher Kongress für Orthopädie und Unfallchirurgie; 73. Jahrestagung der Deutschen Gesellschaft für Unfallchirurgie, 95. Tagung der Deutschen Gesellschaft für Orthopädie und Orthopädische Chirurgie, 50. Tagung des Berufsverbandes der Fachärzte für Orthopädie

Published
2009

40. Influence of Forming Rate on the Microstructure and Properties of Materials Subjected to Electromagnetic Forming

Author

Bach, F.-W., Bormann, D., and Walden, L.

Subjects
high resolution microscope, strain, x-ray, aluminum, sheet metal forming, residuel stress, texture, structure analysis
Abstract

Electromagnetic high speed forming has been known since the 1960's and is successfully used for frictional connexions. In addition to joining, other applications of the process include coining, stamping and cutting. Regarding product quality and manufacturing costs, the process is superior to other methods and yet its utilisation can still be extended. The synopsis of the material's microstructure and properties owing to electromagnetic forming, which is given by this article, clarifies the processes from a materials science point of view. This will not only represent an academic view point but also provide insight into a potential expansion of the process to other areas of application.

Published
2008

41. [Influence of different surface machining treatments of resorbable implants made from different magnesium-calcium alloys on their degradation--a pilot study in rabbit models]

Author

von der Höh N, Krause A, Hackenbroich C, Bormann D, Lucas A, and Andrea Meyer-Lindenberg

Subjects
Osseointegration, Surface Properties, Alloys, Animals, Calcium, Female, Magnesium, Femur, Prostheses and Implants, Rabbits, Microradiography
Abstract

To examine the influence of different surface machining treatments of resorbable implants 3x5 mm cylinders of magnesium-calcium-alloys with plane, rough or sand blasted surface and different concentrations of calcium (0.4 %, 0.8 %, 1.2 % und 2.0 %) were implanted into the distal femur condylus of 18 New Zealand White Rabbits. They were placed into the spongy-cortical passage. During six weeks the animals were examined daily and x-rayed weekly. After euthanasia the bone was explanted and scanned in a microcomputed tomograph. The implants were well tolerated by the rabbits, neither lameness nor signs of pain occured. Wound healing was mostly without complications. Eight of 36 implants (22 %) showed dehiscence of suture within first ten days, whereby implants made of 1,2 % MgCa were mainly affected (six of 12 cases, 50 %). At the place of insertion all implants induced obvious callus genesis which could be seen in MgCa 1,2-cylinders with plane surface and MgCa 0,8-cylinders with rough and sand blasted surface the most. Influence of different calcium concentrations on degradation behaviour could not be discovered. They showed different stages of resorption. Concerning the different surface machining treatments sand blasted implants showed the highest degree of degradation which could be seen by the totally loss of structure in micro-computed examinations. These implants also showed in six of 36 cases a clinical occurrence of gas production. Rough implants showed an irregular degradation with high degree of resorption of some implants and signs of degradation only in the border area of others. Cylindricity maintained in plane implants. They showed loss of structure only in border areas.

Published
2007

42. Long-wave phonons in ZnSe-BeSe mixed crystals: Raman scattering and percolation model

Author

Pagès, O., Ajjoun, M., Tite, T., Bormann, D., Tournié, E., Rustagi, K. C., Centre d'Electronique et de Micro-optoélectronique de Montpellier (CEM2), and Université Montpellier 2 - Sciences et Techniques (UM2)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Beryllium selenides, Localized modes, Chemical composition, Inorganic compounds, Percolation theory, Ternary compounds, Transition element compounds, Line shape, [SPI.TRON]Engineering Sciences [physics]/Electronics, Semiconductor materials, Zinc selenides, Phonon mode, Spectral line shift, Oscillators, Raman spectra, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2004

44. Atmospheric Monitoring for the Pierre Auger Fluorescence Detector

Author

Mostafa, M. A., Fick, B., Ave, M., Letessier, A., Bertou, X., Deligny, O., Lachaud, C., Altmann, E., Alvarez, P., Bauleo, P., Bonifazi, C., Etchegoyen, A., Eusebi, R., Fazzini, N., Ferrero, A., Filevich, A., Reguera, A., Cillis, A., Dova, M. T., Epele, L. N., Grunfeld, C., Mariazzi, A., Martinez, N., Roulet, E., Sciutto, S. J., Veiga, A., Allekotte, I., Avila, G., Masperi, L., Orsaria, M., Rovero, A., Clay, R. W., Dawson, B. R., Pace, R., Riordan, D., Thornton, G. J., Wild, N. R., Boutonnet, C., Brunet, J. M., Capdevielle, J. N., Cohen, F., Courty, B., Guglielmi, L., Jaeger, J. J., Benoît Revenu, Tristram, G., Waisbard, J., Billoir, P., Boratav, M., Castera, A., Sylvie DAGORET, Genolini, B., Lefebvre, F., Lhenry-Yvon, I., Trung, T. N., Parizot, E., Pouthas, J., Suomijarvi, T., Albert, J. N., Arnault, C., Bilhaut, R., Cordier, A., Cormier, E., Eschstruth, P., Jouniaux, O., Lavigne, B., Oleg Lodygensky, Rypko, J., Martin Urban, Bluemer, H., Bollmann, E., Csabo, T., Grindler, A., Gumbsheimer, R., Heck, D., Hucker, H., Kern, H., Klages, H. O., Kleinfeller, J., Mathes, H. J., Matussek, P., Michel-Piper, I., Risse, M., Schleif, G., Thouw, T., Balzer, M., Berg, R., Bormann, D., Gemmeke, H., Giraud, H., Kleifges, M., Kopmann, A., Kunka, N., Menchikov, A., Osswald, B., Remmel, U., Tscherniakhovski, D., Barenthien, N., Kampert, K. H., Keilhauer, B., Argiro, S., Camin, D. V., Guerard, C., Ambrosio, M., Bernardini, C., Facal, P., Filosofi, R., Fois, M., Matthiae, G., Privitera, P., Salina, G., Borreani, G., Cester, R., Menichetti, E., Pastrone, N., Aramo, C., Cangiano, E., Fonte, R., Insolia, A., Raia, G., Gora, D., Homola, P., Kutschera, M., Ostrowski, M., Wilczynska, B., Wilczynski, H., Arcon, I., Filipcic, A., Zavrtanik, D., Zavrtanik, M., Clark, P., Bruijn, L., Knapp, J., Lloyd-Evans, J., Patel, M., Tunnicliffe, V., Walker, P., Watson, A., Arisaka, K., Bonushkin, Y., Kubic, J., Slater, W., Tripathi, A., Brack, J., Hofman, G., Ristinen, R., Harton, J., Sites, J., Warner, D., Wilson, R., Cronin, J. W., Gibbs, K., Albrow, M., Andrews, R., Berman, E., Hoffer, D., Glass, H., Hojvat, C., Mantsch, P., Mazur, P., Spinka, H., Voyvodic, L., Matthews, J. M., Mcewen, M., Meyhandan, R., Darling, J., Dorofeev, A., Nemiroff, B., Nitz, D., Rafert, B., Ruotsala, S., Szadkowski, Z., Trombley, M., Dieterle, B., Matthews, J., Riley, S., Roberts, M., Allison, P., Beatty, J., Coutu, S., Duvernois, M., Cassiday, G., Sommers, P., Luis. Anchordoqui, Machacek, M., Paul, T., Swain, J., Taylor, L., Akhperjanian, A., Chilingarian, A., Hovsepian, G., Mnatzakanian, E., Sahakian, V., Ter-Antonian, S., Aguirre, C., Bustos, R., Choque, K., Ticona, A., Ticona, R., Velarde, A., Thieu, D. Q., Darriulat, P., Chung, N., Dzung, N. T., Dinh, P. N., Phuong, P. T., Thuan, V. V., Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Kajita T. Asaoka Y. Kawachi A. Matsubara M. Sasaki M., PIERRE AUGER, Lantz, Simone, and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], [PHYS.ASTR.CO] Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Astrophysics (astro-ph), FOS: Physical sciences, Astrophysics, Physics::Atmospheric and Oceanic Physics
Abstract

Major uncertainties in the fluorescence energy measurement come from the precision of various atmospheric transmission, air Cerenkov subtraction, light multiple-scattering and cloud corrections. The Auger program for atmospheric monitoring, designed to measure these corrections and to minimize these uncertainties, is summarized in this paper., Four (4) pages, and three (3) EPS figures. Proceedings of the 28th International Cosmic Ray Conference, Universal Academy Press, Inc. Tokyo, Japan, HE (2003) 465-468

Published
2003

45. Shower Studies at around $10^{18}$ eV with the Surface Detector of the Pierre Auger Observatory

Author

P-L, Ghia, Mostafa, M. A., Fick, B., Ave, M., Letessier, A., Bertou, X., Deligny, O., Lachaud, C., Altmann, E., Alvarez, P., Bauleo, P., Bonifazi, C., Etchegoyen, A., Eusebi, R., Fazzini, N., Ferrero, A., Filevich, A., Reguera, A., Cillis, A., Dova, M. T., Epele, L. N., Grunfeld, C., Mariazzi, A., Martinez, N., Roulet, E., Sciutto, S. J., Veiga, A., Allekotte, I., Avila, G., Masperi, L., Orsaria, M., Rovero, A., Clay, R. W., Dawson, B. R., Pace, R., Riordan, D., Thornton, G. J., Wild, N. R., Boutonnet, C., Brunet, J. M., Capdevielle, J. N., Cohen, F., Courty, B., Guglielmi, L., Jaeger, J. J., Benoît Revenu, Tristram, G., Waisbard, J., Billoir, P., Boratav, M., Castera, A., Sylvie DAGORET, Genolini, B., Lefebvre, F., Lhenry-Yvon, I., Trung, T. N., Parizot, E., Pouthas, J., Suomijarvi, T., Albert, J. N., Arnault, C., Bilhaut, R., Cordier, A., Cormier, E., Eschstruth, P., Jouniaux, O., Lavigne, B., Oleg Lodygensky, Rypko, J., Martin Urban, Bluemer, H., Bollmann, E., Csabo, T., Grindler, A., Gumbsheimer, R., Heck, D., Hucker, H., Kern, H., Klages, H. O., Kleinfeller, J., Mathes, H. J., Matussek, P., Michel-Piper, I., Risse, M., Schleif, G., Thouw, T., Balzer, M., Berg, R., Bormann, D., Gemmeke, H., Giraud, H., Kleifges, M., Kopmann, A., Kunka, N., Menchikov, A., Osswald, B., Remmel, U., Tscherniakhovski, D., Barenthien, N., Kampert, K. H., Keilhauer, B., Argiro, S., Camin, D. V., Guerard, C., Ambrosio, M., Bernardini, C., Facal, P., Filosofi, R., Fois, M., Matthiae, G., Privitera, P., Salina, G., Borreani, G., Cester, R., Menichetti, E., Pastrone, N., Aramo, C., Cangiano, E., Fonte, R., Insolia, A., Raia, G., Gora, D., Homola, P., Kutschera, M., Ostrowski, M., Wilczynska, B., Wilczynski, H., Arcon, I., Filipcic, A., Zavrtanik, D., Zavrtanik, M., Clark, P., Bruijn, L., Knapp, J., Lloyd-Evans, J., Patel, M., Tunnicliffe, V., Walker, P., Watson, A., Arisaka, K., Bonushkin, Y., Kubic, J., Slater, W., Tripathi, A., Brack, J., Hofman, G., Ristinen, R., Harton, J., Sites, J., Warner, D., Wilson, R., Cronin, J. W., Gibbs, K., Albrow, M., Andrews, R., Berman, E., Hoffer, D., Glass, H., Hojvat, C., Mantsch, P., Mazur, P., Spinka, H., Voyvodic, L., Matthews, J. M., Mcewen, M., Meyhandan, R., Darling, J., Dorofeev, A., Nemiroff, B., Nitz, D., Rafert, B., Ruotsala, S., Szadkowski, Z., Trombley, M., Dieterle, B., Matthews, J., Riley, S., Roberts, M., Allison, P., Beatty, J., Coutu, S., Duvernois, M., Cassiday, G., Sommers, P., Luis. Anchordoqui, Machacek, M., Paul, T., Swain, J., Taylor, L., Akhperjanian, A., Chilingarian, A., Hovsepian, G., Mnatzakanian, E., Sahakian, V., Ter-Antonian, S., Aguirre, C., Bustos, R., Choque, K., Ticona, A., Ticona, R., Velarde, A., Thieu, D. Q., Darriulat, P., Chung, N., Dzung, N. T., Dinh, P. N., Phuong, P. T., Thuan, V. V., Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Kajita T. Asaoka Y. Kawachi A. Matsubara M. Sasaki M., PIERRE AUGER, and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)

Subjects
[PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Astrophysics (astro-ph), FOS: Physical sciences, Astrophysics
Abstract

Three months of data taken by the Engineering Array Surface Detector of the Pierre Auger Observatory have been analyzed with the aim of setting a procedure for the study of showers at E_0 ~ 10^18 eV. We present the results, concerning: (i) the selection procedure and the check of its efficiency; (ii) the event rate and its stability; (iii) the characteristics of such events (i.e., angular direction, energy estimator S(1000), rise time vs core distance, correlation with pressure) showing their consistency with the expectations. The performances of the whole Surface Detector of the Auger Observatory are discussed., Comment: Talk given at 28th International Cosmic Ray Conferences (ICRC 2003), Tsukuba, Japan, 31 Jul - 7 Aug 2003

Published
2003

46. The Anisotropy Search Program For the Pierre Auger Observatory

Author

Clay, W., Ave, M., Letessier, A., Bertou, X., Deligny, O., Lachaud, C., Altmann, E., Alvarez, P., Bauleo, P., Bonifazi, C., Etchegoyen, A., Eusebi, R., Fazzini, N., Ferrero, A., Filevich, A., Reguera, A., Cillis, A., Dova, M. T., Epele, L. N., Grunfeld, C., Mariazzi, A., Martinez, N., Roulet, E., Sciutto, S. J., Veiga, A., Allekotte, I., Avila, G., Masperi, L., Orsaria, M., Rovero, A., Dawson, B. R., Pace, R., Riordan, D., Thornton, G. J., Wild, N. R., Boutonnet, C., Brunet, J. M., Capdevielle, J. N., Cohen, F., Courty, B., Guglielmi, L., Jaeger, J. J., Benoît Revenu, Tristram, G., Waisbard, J., Billoir, P., Boratav, M., Castera, A., Sylvie DAGORET, Genolini, B., Lefebvre, F., Lhenry-Yvon, I., Trung, T. N., Parizot, E., Pouthas, J., Suomijarvi, T., Albert, J. N., Arnault, C., Bilhaut, R., Cordier, A., Cormier, E., Eschstruth, P., Jouniaux, O., Lavigne, B., Oleg Lodygensky, Rypko, J., Martin Urban, Bluemer, H., Bollmann, E., Csabo, T., Grindler, A., Gumbsheimer, R., Heck, D., Hucker, H., Kern, H., Klages, H. O., Kleinfeller, J., Mathes, H. J., Matussek, P., Michel-Piper, I., Risse, M., Schleif, G., Thouw, T., Balzer, M., Berg, R., Bormann, D., Gemmeke, H., Giraud, H., Kleifges, M., Kopmann, A., Kunka, N., Menchikov, A., Osswald, B., Remmel, U., Tscherniakhovski, D., Barenthien, N., Kampert, K. H., Keilhauer, B., Argiro, S., Camin, D. V., Guerard, C., Ambrosio, M., Bernardini, C., Facal, P., Filosofi, R., Fois, M., Matthiae, G., Privitera, P., Salina, G., Borreani, G., Cester, R., Menichetti, E., Pastrone, N., Aramo, C., Cangiano, E., Fonte, R., Insolia, A., Raia, G., Gora, D., Homola, P., Kutschera, M., Ostrowski, M., Wilczynska, B., Wilczynski, H., Arcon, I., Filipcic, A., Zavrtanik, D., Zavrtanik, M., Clark, P., Bruijn, L., Knapp, J., Lloyd-Evans, J., Patel, M., Tunnicliffe, V., Walker, P., Watson, A., Arisaka, K., Bonushkin, Y., Kubic, J., Slater, W., Tripathi, A., Brack, J., Hofman, G., Ristinen, R., Harton, J., Sites, J., Warner, D., Wilson, R., Cronin, J. W., Gibbs, K., Albrow, M., Andrews, R., Berman, E., Hoffer, D., Glass, H., Hojvat, C., Mantsch, P., Mazur, P., Spinka, H., Voyvodic, L., Matthews, J. M., Mcewen, M., Meyhandan, R., Darling, J., Dorofeev, A., Nemiroff, B., Nitz, D., Rafert, B., Ruotsala, S., Szadkowski, Z., Trombley, M., Dieterle, B., Matthews, J., Riley, S., Roberts, M., Allison, P., Beatty, J., Coutu, S., Duvernois, M., Cassiday, G., Fick, B., Sommers, P., Luis. Anchordoqui, Machacek, M., Paul, T., Swain, J., Taylor, L., Akhperjanian, A., Chilingarian, A., Hovsepian, G., Mnatzakanian, E., Sahakian, V., Ter-Antonian, S., Aguirre, C., Bustos, R., Choque, K., Ticona, A., Ticona, R., Velarde, A., Thieu, D. Q., Darriulat, P., Chung, N., Dzung, N. T., Dinh, P. N., Phuong, P. T., Thuan, V. V., Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Kajita T. Asaoka Y. Kawachi A. Matsubara M. Sasaki M., PIERRE AUGER, and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Astrophysics (astro-ph), FOS: Physical sciences, Astrophysics
Abstract

The Pierre Auger Southern Observatory in Argentina has begun taking data as it is being developed up to a final enclosed area of 3000 square kilometres. A key aspect of the project is to provide information on the origin of the highest energy cosmic rays through understanding the arrival directions of those particles. To avoid claims of a spurious anisotropy detection because trials have not been properly accounted, the Auger Collaboration has agreed 'a priori' to the analysis prescription presented here. It specifies the following: 1. The accumulation time for the (future) data set to be analyzed. 2. The anisotropy 'targets', each assigned a chance probability level. 3. The analysis procedure for each trial. A positive result will be claimed for any target search only if its chance probability is less than its assigned level. The levels are chosen so that the total chance probability for one or more positive results is 0.001. Exploratory searches beyond this prescription will be encouraged, but the Auger Collaboration will not assign any confidence level to anisotropies that may be discovered that way. Any such discovery would identify a good target for a prescription to be used with a subsequent Auger data set., 4 pages

Published
2003

47. Calibration of the Pierre Auger fluorescence detector

Author

Roberts, M., Ave, M., Letessier, A., Bertou, X., Deligny, O., Lachaud, C., Altmann, E., Alvarez, P., Bauleo, P., Bonifazi, C., Etchegoyen, A., Eusebi, R., Fazzini, N., Ferrero, A., Filevich, A., Reguera, A., Cillis, A., Dova, M. T., Epele, L. N., Grunfeld, C., Mariazzi, A., Martinez, N., Roulet, E., Sciutto, S. J., Veiga, A., Allekotte, I., Avila, G., Masperi, L., Orsaria, M., Rovero, A., Clay, R. W., Dawson, B. R., Pace, R., Riordan, D., Thornton, G. J., Wild, N. R., Boutonnet, C., Brunet, J. M., Capdevielle, J. N., Cohen, F., Courty, B., Guglielmi, L., Jaeger, J. J., Benoît Revenu, Tristram, G., Waisbard, J., Billoir, P., Boratav, M., Castera, A., Sylvie DAGORET, Genolini, B., Lefebvre, F., Lhenry-Yvon, I., Trung, T. N., Parizot, E., Pouthas, J., Suomijarvi, T., Albert, J. N., Arnault, C., Bilhaut, R., Cordier, A., Cormier, E., Eschstruth, P., Jouniaux, O., Lavigne, B., Oleg Lodygensky, Rypko, J., Martin Urban, Bluemer, H., Bollmann, E., Csabo, T., Grindler, A., Gumbsheimer, R., Heck, D., Hucker, H., Kern, H., Klages, H. O., Kleinfeller, J., Mathes, H. J., Matussek, P., Michel-Piper, I., Risse, M., Schleif, G., Thouw, T., Balzer, M., Berg, R., Bormann, D., Gemmeke, H., Giraud, H., Kleifges, M., Kopmann, A., Kunka, N., Menchikov, A., Osswald, B., Remmel, U., Tscherniakhovski, D., Barenthien, N., Kampert, K. H., Keilhauer, B., Argiro, S., Camin, D. V., Guerard, C., Ambrosio, M., Bernardini, C., Facal, P., Filosofi, R., Fois, M., Matthiae, G., Privitera, P., Salina, G., Borreani, G., Cester, R., Menichetti, E., Pastrone, N., Aramo, C., Cangiano, E., Fonte, R., Insolia, A., Raia, G., Gora, D., Homola, P., Kutschera, M., Ostrowski, M., Wilczynska, B., Wilczynski, H., Arcon, I., Filipcic, A., Zavrtanik, D., Zavrtanik, M., Clark, P., Bruijn, L., Knapp, J., Lloyd-Evans, J., Patel, M., Tunnicliffe, V., Walker, P., Watson, A., Arisaka, K., Bonushkin, Y., Kubic, J., Slater, W., Tripathi, A., Brack, J., Hofman, G., Ristinen, R., Harton, J., Sites, J., Warner, D., Wilson, R., Cronin, J. W., Gibbs, K., Albrow, M., Andrews, R., Berman, E., Hoffer, D., Glass, H., Hojvat, C., Mantsch, P., Mazur, P., Spinka, H., Voyvodic, L., Matthews, J. M., Mcewen, M., Meyhandan, R., Darling, J., Dorofeev, A., Nemiroff, B., Nitz, D., Rafert, B., Ruotsala, S., Szadkowski, Z., Trombley, M., Dieterle, B., Matthews, J., Riley, S., Allison, P., Beatty, J., Coutu, S., Duvernois, M., Cassiday, G., Fick, B., Sommers, P., Luis. Anchordoqui, Machacek, M., Paul, T., Swain, J., Taylor, L., Akhperjanian, A., Chilingarian, A., Hovsepian, G., Mnatzakanian, E., Sahakian, V., Ter-Antonian, S., Aguirre, C., Bustos, R., Choque, K., Ticona, A., Ticona, R., Velarde, A., Thieu, D. Q., Darriulat, P., Chung, N., Dzung, N. T., Dinh, P. N., Phuong, P. T., Thuan, V. V., Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Kajita T. Asaoka Y. Kawachi A. Matsubara M. Sasaki M., PIERRE AUGER, and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)

Subjects
[PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Astrophysics::High Energy Astrophysical Phenomena, Astrophysics (astro-ph), Astrophysics::Instrumentation and Methods for Astrophysics, FOS: Physical sciences, Astrophysics
Abstract

The absolute calibration of an air fluorescence detector (FD) is an important element in correctly determining the energy of detected cosmic rays. The absolute calibration relates the flux of photons of a given wavelength at the detector aperture to the electronic signal recorded by the FD data acquisition system. For the Auger FDs, the primary absolute calibration method uses a diffusive surface which is placed in front of a telescope aperture to uniformly illuminate the telescope field of view with a known light signal. This single-wavelength measurement (375 nm) will be made at intervals of several months until the stability of the telescopes is determined. The relative wavelength dependence of the calibration is determined through independent measurements. The error in absolute calibration at a single wavelength is estimated to be less than 10%. Two other absolute calibration methods are used to provide an independent verification of the primary measurement. The stability of the calibration with time is monitored nightly by a relative calibration system. In this paper we will provide descriptions of the absolute and relative calibration methods used by the Auger air fluorescence observatory. Results from the calibration of the Auger Engineering Array telescopes will also be presented., Comment: 4 pages, no figures. Presented at the 28th International Cosmic Ray Conference

Published
2003
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48. Hybrid Performance of the Pierre Auger Observatory and Reconstruction of Hybrid Events

Author

Kick, B., Altmann, E., Alvarez, P., Bauleo, P., Bonifazi, C., Etchegoyen, A., Eusebi, R., Fazzini, N., Ferrero, A., Filevich, A., Reguera, A., Cillis, A., Dova, M. T., Epele, L. N., Grunfeld, C., Mariazzi, A., Martinez, N., Roulet, E., Sciutto, S. J., Veiga, A., Allekotte, I., Avila, G., Masperi, L., Orsaria, M., Rovero, A., Clay, R. W., Dawson, B. R., Pace, R., Riordan, D., Thornton, G. J., Wild, N. R., Boutonnet, C., J-M, Brunet, J-N, Capdevielle, Cohen, F., Courty, B., Guglielmi, L., J-J, Jaeger, Benoît Revenu, Tristram, G., Waisbard, J., Bertou, X., Billoir, P., Boratav, M., Castera, A., Dagoret-Campagne, S., Deligny, O., Lachaud, C., antoine letessier selvon, Genolini, B., Fabrice Lefebvre, Lhenry-Yvon, I., Trung, T. N., Parizot, E., Pouthas, J., Suomijarvi, T., Albert, J. N., Arnault, C., Bilhaut, R., Cordier, A., Cormier, E., Eschstruth, P., Jouniaux, O., Lavigne, B., Oleg Lodygensky, Rypko, J., Martin Urban, Bluemer, H., Bollmann, E., Csabo, T., Grindler, A., Gumbsheimer, R., Heck, D., Hucker, H., Kern, H., Klages, H. O., Kleinfeller, J., Mathes, H. J., Matussek, P., Michel-Piper, I., Risse, M., Schleif, G., Thouw, T., Balzer, M., Berg, R., Bormann, D., Gemmeke, H., Giraud, H., Kleifges, M., Kopmann, A., Kunka, N., Menchikov, A., Osswald, B., Remmel, U., Tscherniakhovski, D., Barenthien, N., Kampert, K. H., Keilhauer, B., Argiro, S., Camin, D. V., Guerard, C., Ambrosio, M., Bernardini, C., Facal, P., Filosofi, R., Fois, M., Matthiae, G., Privitera, P., Salina, G., Borreani, G., Cester, R., Menichetti, E., Pastrone, N., Aramo, C., Cangiano, E., Fonte, R., Insolia, A., Raia, G., Gora, D., Homola, P., Kutschera, M., Ostrowski, M., Wilczynska, B., Wilczynski, H., Arcon, I., Filipcic, A., Zavrtanik, M., Clark, P., Bruijn, L., Knapp, J., Lloyd-Evans, J., Patel, M., Tunnicliffe, V., Walker, P., Watson, A., Arisaka, K., Bonushkin, Y., Kubic, J., Slater, W., Tripathi, A., Brack, J., Hofman, G., Ristinen, R., Harton, J., Sites, J., Warner, D., Wilson, R. P., Cronin, J. W., Gibbs, K., Albrow, M., Andrews, R., Berman, E., Hoffer, D., Glass, H., Hojvat, C., Mantsch, P., Mazur, P., Spinka, H., Voyvodic, L., Matthews, J. M., Mcewen, M., Meyhandan, R., Darling, J., Dorofeev, A., Nemiroff, B., Nitz, D., Rafert, B., Ruotsala, S., Szadkowski, Z., Trombley, M., Dieterle, B., Matthews, J., Riley, S., Roberts, M., Allison, P., Beatty, J., Coutu, S., Duvernois, M., Cassiday, G., Fick, B., Sommers, P., Anchordoqui, L., Machacek, M., Paul, T., Swain, J., Taylor, L., Akhperjanian, A., Chilingarian, A., Hovsepian, G., Mnatzakanian, E., Sahakian, V., Ter-Antonian, S., Aguirre, C., Bustos, R., Choque, K., Ticona, A., Ticona, R., Velarde, A., Thieu, D. Q., Darriulat, P., Chung, N., Dzung, N. T., Dinh, P. N., Phuong, P. T., Thuan, V. V., Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Kajita T. Asaoka Y. Kawachi A. Matsubara Y. Sasaki M., PIERRE AUGER, Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), and Lantz, Simone

Subjects
[PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], [PHYS.ASTR.CO] Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Astrophysics (astro-ph), FOS: Physical sciences, Astrophysics
Abstract

The Pierre Auger Observatory is a``hybrid'' UHECR detector. The surface detector (SD) and air fluorescence detector (FD) of the observatory are designed for observation of cosmic ray showers in coincidence, with a 10% duty cycle. The resulting data are expected to be superior in quality to those of either the SD or FD operating individually. Hybrid operation, triggering, data acquisition, and event reconstruction were successfully demonstrated during the prototype phase of the project. This paper focuses on 75 hybrid events recorded during a four month period of running with the prototype detectors in late 2001 and early 2002. The geometric technique for reconstruction of the hybrid events is described and its advantages over the traditional FD-only method are demonstrated. A lateral distribution for the water Cherenkov signals, derived from these data, is presented., Comment: Talk given at 28th International Cosmic Ray Conferences (ICRC 2003), Tsukuba, Japan, 31 Jul - 7 Aug 2003

Published
2003
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49. Theoretical Investigations of Inclusion Processes of (4-tert.-butylphenyl)(3-sulfonatophenyl)(phenyl) Phosphine in the β-Cyclodextrin

Author

Blidi Boukamel, N., Krallafa, A., Bormann, D., Caron, L., Canipelle, M., Tilloy, S., Monflier, E., Laboratoire de physico-chimie des interfaces et applications (LPCIA), and Centre National de la Recherche Scientifique (CNRS)-Université de Lille, Sciences et Technologies-Université d'Artois (UA)

Subjects
[CHIM.ORGA]Chemical Sciences/Organic chemistry, [CHIM]Chemical Sciences, [CHIM.CATA]Chemical Sciences/Catalysis, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2002

50. Atmospheric Monitoring for the Auger Fluorescence Detector

Author

Matthews, J. A. J., Clay, R., Altmann, E., Alvarez, P., Bauleo, P., Bonifazi, C., Etchegoyen, A., Eusebi, R., Fazzini, N., Ferrero, A., Filevich, A., Reguera, A., Cillis, A., Dova, M. T., Epele, L. N., Grunfeld, C., Mariazzi, A., Martinez, N., Roulet, E., Sciutto, S. J., Veiga, A., Allekotte, I., Avila, G., Masperi, L., Orsaria, M., Rovero, A., Dawson, B. R., Pace, R., Riordan, D., Thornton, G. J., Wild, N. R., Boutonnet, C., Brunet, J. M., Capdevielle, J. N., Cohen, F., Courty, B., Guglielmi, L., Jaeger, J. J., Benoît Revenu, Tristram, G., Waisbard, J., Bertou, X., Billoir, P., Boratav, M., Castera, A., Dagoret-Campagne, S., Deligny, O., Lachaud, C., antoine letessier selvon, Genolini, B., Fabrice Lefebvre, Lhenry-Yvon, I., Trung, T. N., Parizot, E., Pouthas, J., Suomijarvi, T., Albert, J. N., Arnault, C., Bilhaut, R., Cordier, A., Cormier, E., Eschstruth, P., Jouniaux, O., Lavigne, B., Oleg Lodygensky, Rypko, J., Martin Urban, Bluemer, H., Bollmann, E., Csabo, T., Grindler, A., Gumbsheimer, R., Heck, D., Hucker, H., Kern, H., Klages, H. O., Kleinfeller, J., Mathes, H. J., Matussek, P., Michel-Piper, I., Risse, M., Schleif, G., Thouw, T., Balzer, M., Berg, R., Bormann, D., Gemmeke, H., Giraud, H., Kleifges, M., Kopmann, A., Kunka, N., Menchikov, A., Osswald, B., Remmel, U., Tscherniakhovski, D., Barenthien, N., Kampert, K. H., Keilhauer, B., Argiro, S., Camin, D. V., Guerard, C., Ambrosio, M., Bernardini, C., Facal, P., Filosofi, R., Fois, M., Matthiae, G., Privitera, P., Salina, G., Borreani, G., Cester, R., Menichetti, E., Pastrone, N., Aramo, C., Cangiano, E., Fonte, R., Insolia, A., Raia, G., Gora, D., Homola, P., Kutschera, M., Ostrowski, M., Wilczynska, B., Wilczynski, H., Arcon, I., Filipcic, A., Zavrtanik, D., Zavrtanik, M., Clark, P., Bruijn, L., Knapp, J., Lloyd-Evans, J., Patel, M., Tunnicliffe, V., Walker, P., Watson, A., Arisaka, K., Bonushkin, Y., Kubic, J., Slater, W., Tripathi, A., Brack, J., Hofman, G., Ristinen, R., Harton, J., Sites, J., Warner, D., Wilson, R. P., Cronin, J. W., Gibbs, K., Albrow, M., Andrews, R., Berman, E., Hoffer, D., Glass, H., Hojvat, C., Mantsch, P., Mazur, P., Spinka, H., Voyvodic, L., Mcewen, M., Meyhandan, R., Darling, J., Dorofeev, A., Nemiroff, B., Nitz, D., Rafert, B., Ruotsala, S., Szadkowski, Z., Trombley, M., Dieterle, B., Matthews, J., Riley, S., Roberts, M., Allison, P., Beatty, J., Coutu, S., Duvernois, M., Cassiday, G., Fick, B., Sommers, P., Luis. Anchordoqui, Machacek, M., Paul, T., Swain, J., Taylor, L., Akhperjanian, A., Chilingarian, A., Hovsepian, G., Mnatzakanian, E., Sahakian, V., Ter-Antonian, S. Aguirre C., Bustos, R., Choque, K., Ticona, A., Ticona, R., Velarde, A., Thieu, D. Q., Darriulat, P., Chung, N., Dzung, N. T., Dinh, P. N., Phuong, P. T., Thuan, V. V., Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire de l'Accélérateur Linéaire (LAL), Kampert K.H. Heinzelmann G. Spiering C., PIERRE AUGER, Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Lantz, Simone

Subjects
[PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], [PHYS.ASTR.CO] Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO]
Published
2001

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