Köln 2004 – scientific programme
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HK: Physik der Hadronen und Kerne
HK 31: Instrumentation and Applications IV
HK 31.4: Talk
Wednesday, March 10, 2004, 15:00–15:15, C
RESULTS OF COSMIC-RAY TRACKING WITH A NEW STRAW DETECTOR — •Aziz Ucar1, Kurt Kilian1, Peter Wintz1, Robert Nellen1, Thomas Sefzick1, Vlademir Kozlov2,1, Sergey Orfanitskiy2,1, and Eduard Roderburg1 — 1Institute of Nucleer Physics, Research Center Juelich, Germany — 2Moskow State University
A new straw tube tracking detector is under construction. It will be used inside the vacuum tank of the COSY time of flight (TOF) detector system.
As the mechanical stability is provided by gas overpressure, there is no need of massive fixing or clamping inside the surrounding frame which has very low mass. The detector will consist of more than 3000 straws with 1cm diameter and 30 micron Mylar wall thickness. The active volume and area of the tracker are 0.3 m3 and 1 m2. The final tracker has a total weight less than 15 kg including surrounding frames.
Using straws arranged in double plane for tests, cosmic-ray tracks are reconstructed. First spatial resolution and efficiency of the straws are determined.