The Time of Flight System of the AMS-02 Space Experiment

Details The Time of Flight System of the AMS-02 Space Experiment The Time of Flight System of the AMS-02 Space Experiment

2001-11-30

arxiv.org/abs/hep-ex/0111096v1

Physics

High Energy Physics

High Energy Physics - Experiment

5 pages, 4 figures. Proc. of 7th Int. Conf. on Adv. Tech. and Part. Phys., 15-19 October 2001,Como (Italy)

Scientific paper

The Time-of-Flight (TOF) system of the AMS detector gives the fast trigger to the read out electronics and measures velocity, direction and charge of the crossing particles. The new version of the detector (called AMS-02) will be installed on the International Space Station on March 2004. The fringing field of the AMS-02 superconducting magnet is $1.0\div2.5$ kG where the photomultiplers (PM) are installed. In order to be able to operate with this residual field, a new type of PM was chosen and the mechanical design was constrained by requiring to minimize the angle between the magnetic field vector and the PM axis. Due to strong field and to the curved light guides, the time resolution will be $150\div180$ ps, while the new electronics will allow for a better charge measurement.

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