Author/Authors :
Doetinchem، نويسنده , , Ph.v. and Fopp، نويسنده , , S. and Karpinski، نويسنده , , W. and Kirn، نويسنده , , Th. and Lübelsmeyer، نويسنده , , K. and Orboeck، نويسنده , , J. and Schael، نويسنده , , S. and Schultz von Dratzig، نويسنده , , A. and Schwering، نويسنده , , G. and Siedenburg، نويسنده , , Th. and Siedling، نويسنده , , R. and Wallraff، نويسنده , , W. and Becker، نويسنده , , U. and Burger، نويسنده , , J. and Henning، نويسنده , , R. and Kounine، نويسنده , , A. and Koutsenko، نويسنده , , V. and Wyatt، نويسنده , , J.، نويسنده ,
Abstract :
For cosmic particle spectroscopy on the International Space Station the AMS experiment will be equipped with a Transition Radiation Detector (TRD) to improve particle identification. The TRD has 20 layers of fleece radiator with Xe/CO2 proportional-mode straw-tube chambers. They are supported in a conically shaped octagon structure made of CFC-Al-honeycomb. For low power consumption VA analog multiplexers are used as front-end readout. A 20 layer prototype built from final design components has achieved proton rejections from 100 to 2000 at 90% electron efficiency for proton beam energies up to 250 GeV with cluster counting, likelihood and neural net selection algorithms.
Keywords :
Transition radiation detector , Particle identification , AMS , Straw tubes
