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The PAMELA Calorimeter Identification Capabilities
KTH, School of Engineering Sciences (SCI), Physics.
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2005 (English)In: Proceedings of the 29th International Cosmic Ray Conference, vol 3:OG1, 2005, Vol. 3, 305-308 p.Conference paper (Refereed)
Abstract [en]

A silicon-tungsten imaging calorimeter has been designed, built and successfully integrated in the PAMELA satellite-bome apparatus. The main physics task of the experiment is the measurement of the flux of antiprotons, positrons and light nuclei in the cosmic radiation. The purpose of the calorimeter is to separate antiprotons and positrons from the vast background of cosmic-ray electrons and protons, respectively. In this work we present the identification capabilities of the calorimeter obtained using both Monte Carlo and test beam data. We show that the calorimeter can provide a proton rejection factor of about 105 while keeping a similar to 90% efficiency in selecting electrons and positrons. The PAMELA calorimeter is therefore able to provide the identification power needed to reach the primary scientific objectives of PAMELA.

Place, publisher, year, edition, pages
2005. Vol. 3, 305-308 p.
National Category
Astronomy, Astrophysics and Cosmology
URN: urn:nbn:se:kth:diva-80179ISI: 000243522100077ScopusID: 2-s2.0-84898974646OAI: diva2:496057
29th International Cosmic Ray Conference Location: Pune, INDIA Date: AUG 03-10, 2005
QC 20120228Available from: 2012-02-09 Created: 2012-02-09 Last updated: 2012-02-28Bibliographically approved

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