AMS-02 Track reconstruction and rigidity measurement

G. Ambrosi, P. Azzarello, R. Battiston, J. Bazo, B. Bertucci, A. Chikanian, E. Choumilov, V. Choutko, C. Delgado-Mendez, M. Duranti, D. D’Urso, E. Fiandrini, M. Graziani, M. Habiby, S. Haino, M. Ionica, I. Mereu, S. Natale, F. Nozzoli, A. OlivaM. Paniccia, C. Pizzolotto, M. Pohl, D. Rapin, P. Saouter, N. Tomassetti, K. Wu, Z. Zhang, P. Zuccon

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations


The Alpha Magnetic Spectrometer 02 is a particle detector taking data on the International Space Station since May 19th 2011. A key element of AMS-02 is the Silicon Tracker that allows to determine the trajectory of the charged cosmic rays passing through the AMS-02 magnetic field. In this contribution, we discuss the procedures that from the tracker raw signals allow to reconstruct a full particle trajectory. We discuss how different fitting procedures achieve the best rigidity measurement accuracy in different intervals and we present the overall performance in the rigidity measurement for protons and helium nuclei. Finally we present a technique to reduce the charge confusion.

Original languageEnglish
Title of host publicationProceedings of the 33rd International Cosmic Rays Conference, ICRC 2013
PublisherSociedade Brasileira de Fisica
ISBN (Electronic)9788589064293
StatePublished - 2013
Externally publishedYes
Event33rd International Cosmic Rays Conference, ICRC 2013 - Rio de Janeiro, Brazil
Duration: 2 Jul 20139 Jul 2013

Publication series

NameProceedings of the 33rd International Cosmic Rays Conference, ICRC 2013


Conference33rd International Cosmic Rays Conference, ICRC 2013
CityRio de Janeiro


  • AMS
  • Resolution
  • Silicon tracker


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