Velocity and Charge Reconstruction with the AMS/RICH Detector

Details Velocity and Charge Reconstruction with the AMS/RICH Detector Velocity and Charge Reconstruction with the AMS/RICH Detector

Feb 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006nwap.conf..134a&link_type=abstract

NEW WORLDS IN ASTROPARTICLE PHYSICS. Proceedings of the Fifth International Workshop. Held 8-10 January 2005 in Faro, Portugal.

Physics

Scientific paper

The Alpha Magnetic Spectrometer (AMS), to be installed on the International Space Station (ISS) in 2008, will be equipped with a proximity focusing Ring Imaging Čerenkov detector (RICH). This detector will be equipped with a dual radiator (aerogel+NaF), a lateral conical mirror and a detection plane made of 680 photomultipliers and light-guides, enabling measurements of particle electric charge and velocity. A likelihood method for the Čerenkov angle reconstruction was applied leading to a velocity determination for protons with a resolution around 0.1%. The electric charge reconstruction is based on the counting of the number of photoelectrons and on an overall efficiency estimation on an event-by-event basis. Results from the application of both methods are presented.

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