The AMS-RICH velocity and charge reconstruction
Abstract
The AMS detector, to be installed on the International Space Station, includes a Ring Imaging Cerenkov detector with two different radiators, silica aerogel (n=1.05) and sodium fluoride (n=1.334). This detector is designed to provide very precise measurements of velocity and electric charge in a wide range of cosmic nuclei energies and atomic numbers. The detector geometry, in particular the presence of a reflector for acceptance purposes, leads to complex Cerenkov patterns detected in a pixelized photomultiplier matrix. The results of different reconstruction methods applied to test beam data as well as to simulated samples are presented. To ensure nominal performances throughout the flight, several detector parameters have to be carefully monitored. The algorithms developed to fulfill these requirements are presented. The velocity and charge measurements provided by the RICH detector endow the AMS spectrometer with precise particle identification capabilities in a wide energy range. The expected performances on light isotope separation are discussed.
Keywords
Cite
@article{arxiv.0709.2154,
title = {The AMS-RICH velocity and charge reconstruction},
author = {F. Barao and M. Aguilar-Benitez and L. Arruda and B. Baret and A. Barrau and G. Barreira and E. Belmont and J. Berdugo and J. Borges and M. Buenerd and D. Casadei and J. Casaus and E. Cortina and M. Costado and D. Crespo and C. Delgado and C. Diaz and L. Derome and P. Goncalves and R. Garcia-Lopez and C. de la Guia and A. Herrero and E. Lanciotti and G. Laurenti and A. Malinin and C. Mana and J. Marin and M. Mangin-Brinet and G. Martinez and A. Menchaca-Rocha and C. Palomares and R. Pereira and M. Pimenta and A. Putze and Y. Sallaz-Damaz and E. S. Seo and I. Sevilla and A. Torrento and M. Vargas-Trevino and O. Veziant},
journal= {arXiv preprint arXiv:0709.2154},
year = {2007}
}
Comments
Contribution to the ICRC07, Merida, Mexico (2007); Presenter: F. Barao