Author/Authors :
Alpat، نويسنده , , B. and Ambrosi، نويسنده , , G. and Azzarello، نويسنده , , Ph. and Battiston، نويسنده , , M. R. Del Bene، نويسنده , , P. and Bertucci، نويسنده , , B. and Bizzaglia، نويسنده , , S. and Bizzarri، نويسنده , , M. and Blasko، نويسنده , , S. and Bourquin، نويسنده , , M. and Bouvier، نويسنده , , Ph. and Burger، نويسنده , , W.J. and Capell، نويسنده , , M. Morandi Cecchi، نويسنده , , C. and Chang، نويسنده , , Y.H. and Cortina، نويسنده , , E.، نويسنده ,
Abstract :
The silicon tracker of the AMS-02 detector measures the trajectory in three dimensions of electrons, protons and nuclei to high precision in a dipole magnetic field and thus measures their rigidity (momentum over charge) and the sign of their charge. In addition, it measures the specific energy loss of charged particles to determine the charge magnitude. Ladders from the AMS-02 tracker have been exposed to ion beams at CERN and GSI to study their response to nuclei from helium up to the iron group. The longest ladder, 72 × 496 mm 2 , verified in the tests contains 12 sensors. Good charge resolution is observed up to iron.
Keywords :
AMS-02 , Silicon tracker , Charge of nuclei , energy loss
