Performance of the AMS-02 Transition Radiation Detector

Details Performance of the AMS-02 Transition Radiation Detector Performance of the AMS-02 Transition Radiation Detector

2006-08-29

arxiv.org/abs/astro-ph/0608641v1

Nucl.Instrum.Meth.A558:526-535,2006

Astronomy and Astrophysics

Astrophysics

11 pages, 25 figures, espcrc2.sty (elsevier 2-column)

Scientific paper

10.1016/J.NIMA.2005.12.187

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.

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