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Production of antihydrogen atoms by 6 keV antiprotons through a positronium cloud
/ Adrich, P. (NCBJ, Swierk) ; Blumer, P. (Zurich, ETH) ; Caratsch, G. (Zurich, ETH) ; Chung, M. (UNIST, Ulsan) ; Cladé, P. (Paris, Lab. Kastler Brossel) ; Comini, P. (IRFU, Saclay) ; Crivelli, P. (Zurich, ETH) ; Dalkarov, O. (Unlisted) ; Debu, P. (IRFU, Saclay) ; Douillet, A. (Paris, Lab. Kastler Brossel ; U. Evry) et al.
We report on the first production of an antihydrogen beam by charge exchange of 6.1 keV antiprotons with a cloud of positronium in the GBAR experiment at CERN. The antiproton beam was delivered by the AD/ELENA facility. [...]
arXiv:2306.15801.-
2023-11-06 - 18 p.
- Published in : Eur. Phys. J. C
Fulltext: 2306.15801 - PDF; Publication - PDF; Erratum - PDF;
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Positron production using a 9 MeV electron linac for the GBAR experiment
/ Charlton, M. (Swansea U.) ; Choi, J.J. (Seoul Natl. U., Dept. Phys. Astron.) ; Chung, M. (UNIST, Ulsan) ; Cladé, P. (Paris, Lab. Kastler Brossel) ; Comini, P. (IRFU, Saclay) ; Crépin, P.P. (Paris, Lab. Kastler Brossel) ; Crivelli, P. (Zurich, ETH) ; Dalkarov, O. (Lebedev Inst.) ; Debu, P. (IRFU, Saclay) ; Dodd, L. (Swansea U.) et al.
For the GBAR (Gravitational Behaviour of Antihydrogen at Rest) experiment at CERN's Antiproton Decelerator (AD) facility we have constructed a source of slow positrons, which uses a low-energy electron linear accelerator (linac). The driver linac produces electrons of 9 MeV kinetic energy that create positrons from bremsstrahlung-induced pair production. [...]
arXiv:2006.05966.-
2021-01-01 - 33 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 985 (2021) 164657
Fulltext: PDF;
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Near-Earth Supernova Explosions: Evidence, Implications, and Opportunities
/ Fields, Brian D. (Illinois U., Urbana) ; Ellis, John R. (King's Coll. London) ; Binns, Walter R. (Washington U., St. Louis) ; Breitschwerdt, Dieter (Helmholtz-Zentrum, Berlin) ; deNolfo, Georgia A. (NASA, Goddard) ; Diehl, Roland (Garching, Max Planck Inst., MPE) ; Dwarkadas, Vikram V. (Chicago U.) ; Ertel, Adrienne (Illinois U., Urbana) ; Faestermann, Thomas (Tech. U., Munich (main)) ; Feige, Jenny (Helmholtz-Zentrum, Berlin) et al.
There is now solid experimental evidence of at least one supernova explosion within 100 pc of Earth within the last few million years, from measurements of the short-lived isotope 60Fe in widespread deep-ocean samples, as well as in the lunar regolith and cosmic rays. [...]
arXiv:1903.04589.
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11 p.
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Update of the HL-LHC operational scenarios for proton operation
/ Metral, Elias (CERN) ; Antipov, Sergey (CERN) ; Antoniou, Fanouria (CERN) ; Appleby, Robert Barrie (University of Manchester (GB)) ; Arduini, Gianluigi (CERN) ; Barranco Garcia, Javier (EPFL - Ecole Polytechnique Federale Lausanne (CH)) ; Baudrenghien, Philippe (CERN) ; Biancacci, Nicolo (CERN) ; Bracco, Chiara (CERN) ; Bruce, Roderik (CERN) et al.
The main aim of this document is to have a clearly identified set of beam and machine parameters to be used for numerical simulations and performance assessment [...]
CERN-ACC-NOTE-2018-0002.
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2018. - 42 p.
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Production, separation and target preparation of 171Tm an 147Pm for neutron cross section measurements
/ Heinitz, S (Paul Scherrer Institute, 5232 Villigen PSI, Switzerland) ; Maugeri, E A (Paul Scherrer Institute, 5232 Villigen PSI, Switzerland) ; Schumann, D (Paul Scherrer Institute, 5232 Villigen PSI, Switzerland) ; Dressler, R (Paul Scherrer Institute, 5232 Villigen PSI, Switzerland) ; Kivel, N (Paul Scherrer Institute, 5232 Villigen PSI, Switzerland) ; Guerrero, C (Universidad de Sevilla, av. Reina Mercedes, 41012 Sevilla, Spain) ; Köster, U (Institut Laue-Langevin, 71 av. de Martyrs, 38042 Grenoble, France) ; Tessler, M (The Hebrew University of Jerusalem, 91904 Jerusalem, Israel) ; Paul, M (The Hebrew University of Jerusalem, 91904 Jerusalem, Israel) ; Halfon, S (Soreq Nuclear Research Center, 81800 Yavne, Israel)
/n_TOF Collaboration
The knowledge of the neutron capture cross sections of s-process branching point isotopes represents a basic requirement for the understanding of star evolution. Since such branching point isotopes are by definition radioactive, the measurement of their cross sections from thermal to stellar energies becomes a challenging task. [...]
Villigen : Paul Scherrer Institut, 2015 - 11 p.
- Published in : Radiochimica Acta 105 (2017) 801-811
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MD 1856 - Landau Damping: Beam Transfer Functions and diffusion mechanisms
/ Tambasco, Claudia (Ecole Polytechnique Federale de Lausanne (CH)) ; Barranco Garcia, Javier (Ecole Polytechnique Federale de Lausanne (CH)) ; Boccardi, Andrea (CERN) ; Buffat, Xavier (CERN) ; Gasior, Marek (CERN) ; Lefevre, Thibaut (CERN) ; Levens, Tom (University of Glasgow (GB)) ; Pojer, Mirko (CERN) ; Salvachua Ferrando, Belen Maria (CERN) ; Solfaroli Camillocci, Matteo (CERN) et al.
In the 2012, 2015 and 2016 several instabilities were developing during the betatron squeeze where beam-beam interactions become stronger modifying the tune spread provided by the octupoles magnets. [...]
CERN-ACC-NOTE-2017-0027.
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2017.
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