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Measurement of antiproton annihilation on Cu, Ag and Au with emulsion films

The characteristics of low energy antiproton annihilations on nuclei (e.g. hadronization and product multiplicities) are not well known, and Monte Carlo simulation packages that use different models provide different descriptions of the annihilation events. In this study, we measured the particle mu...

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Bibliographic Details
Main Authors: Aghion, Stefano (Author) , Bräunig, Philippe (Author) , Demetrio, Andrea (Author) , Müller, Simon R. (Author) , Oberthaler, Markus K. (Author) , Zimmer, Christoph (Author)
Format: Article (Journal)
Language:English
Published: April 19, 2017
In: Journal of Instrumentation
Year: 2017, Volume: 12, Issue: 04
ISSN:1748-0221
DOI:10.1088/1748-0221/12/04/P04021
Online Access:Verlag, Volltext: http://dx.doi.org/10.1088/1748-0221/12/04/P04021
Verlag, Volltext: http://stacks.iop.org/1748-0221/12/i=04/a=P04021
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Author Notes:the AEgIS Collaboration: S. Aghion, C. Amsler, A. Ariga, T. Ariga, G. Bonomi, P. Bräunig, R.S. Brusa, L. Cabaret, M. Caccia, R. Caravita, F. Castelli, G. Cerchiari, D. Comparat, G. Consolati, A. Demetrio, L. Di Noto, M. Doser, A. Ereditato, C. Evans, R. Ferragut, J. Fesel, A. Fontana, S. Gerber, M. Giammarchi, A. Gligorova, F. Guatieri, S. Haider, A. Hinterberger, H. Holmestad, T. Huse, J. Kawada, A. Kellerbauer, M. Kimura, D. Krasnický, V. Lagomarsino, P. Lansonneur, P. Lebrun, C. Malbrunot, S. Mariazzi, V. Matveev, Z. Mazzotta, S.R. Müller, G. Nebbia, P. Nedelec, M. Oberthaler, N. Pacifico, D. Pagano, L. Penasa, V. Petracek, C. Pistillo, F. Prelz, M. Prevedelli, L. Ravelli, B. Rienaecker, O.M. Røhne, A. Rotondi, M. Sacerdoti, H. Sandaker, R. Santoro, P. Scampoli, M. Simon, L. Smestad, F. Sorrentino, G. Testera, I.C. Tietje, S. Vamosi, M. Vladymyrov, E. Widmann, P. Yzombard, C. Zimmer, J. Zmeskal and N. Zurlo
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Summary:The characteristics of low energy antiproton annihilations on nuclei (e.g. hadronization and product multiplicities) are not well known, and Monte Carlo simulation packages that use different models provide different descriptions of the annihilation events. In this study, we measured the particle multiplicities resulting from antiproton annihilations on nuclei. The results were compared with predictions obtained using different models in the simulation tools GEANT4 and FLUKA. For this study, we exposed thin targets (Cu, Ag and Au) to a very low energy antiproton beam from CERN's Antiproton Decelerator, exploiting the secondary beamline available in the AEgIS experimental zone. The antiproton annihilation products were detected using emulsion films developed at the Laboratory of High Energy Physics in Bern, where they were analysed at the automatic microscope facility. The fragment multiplicity measured in this study is in good agreement with results obtained with FLUKA simulations for both minimally and heavily ionizing particles.
Item Description:Gesehen am 14.12.2018
Physical Description:Online Resource
ISSN:1748-0221
DOI:10.1088/1748-0221/12/04/P04021

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