Author/Authors :
Bindi، نويسنده , , V. and Casadei، نويسنده , , D. and Castellini، نويسنده , , G. and Cindolo، نويسنده , , F. and Contin، نويسنده , , A. and Giovacchini، نويسنده , , F. and Guandalini، نويسنده , , C. and Laurenti، نويسنده , , G. and Levi، نويسنده , , G. and Lolli، نويسنده , , M. and Quadrani، نويسنده , , L. and Palmonari، نويسنده , , F. and Sbarra، نويسنده , , C. and Zichichi، نويسنده , , A.، نويسنده ,
Abstract :
The “Time-Of-Flight” (TOF) system of the AMS-02 superconducting spectrometer, to be installed in the ISS International Space Station, consists of four layers of plastic scintillation counters. During the precursor mission AMS-01 (June 1998), a similar system successfully operated in space for 10 days. However, the AMS-02 TOF had to be redesigned taking into account the more stringent mass and power constraints of the AMS-02 detector. The main characteristics of the new TOF system are (a) capability to stand the high fringing field of AMS-02 superconducting magnet; (b) high redundancy of electronic components for unmanned operation of at least three years in the space station; (c) capability to operate in the space environment on the ISS. Counters and electronics have been extensively tested before the installation in the spectrometer.
Keywords :
Plastic scintillator , Time-of-flight , Cosmic rays , AMS experiment
