A transition radiation detector for AMS

作者：Siedenburg T^*; Chung CH; Fopp S; Garcia MF; Karpinski W; Kirn T; Lubelsmeyer K; Orboeck J; Schael S; von Dratzig AS; Schwering G; Siedling R; Wallraff W; Becker U; Berges P; Burger J; Fischer P; Henning R; Kounine A; Koutsenko V; Scholberg K; de Boer W; Hauler F; Jungermann L

来源：Nuclear Physics B - Proceedings Supplements, 2002, 113(1-3): 154-158.

DOI：10.1016/S0920-5632(02)01835-2

For cosmic particle spectroscopy on the International Space Station the AMS experiment will be equipped with a Transition Radiation Detector to improve proton background supression up to 300 GeV. 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 has achieved proton rejections above 100 at 90% electron efficiency for beam energies up to 250 GeV. The detector is under construction at RWTH Aachen, the gas system will be built at MIT, slow-control and DAQ at TH Karlsruhe.

• 出版日期2002-12