Straw chamber prototype for COMPASS tracker system
The construction principals for straw tube chambers with size 3×2 m2 for Large Area Tracker (LAT) of COMPASS experiment are presented. A prototype with 2 m straw tubes has been made assembled. See possibility mechanical deformation and his dimension. Laborotory tests of the prototype were perfored. A good mechanical tolerance and stability of gas gain in longitudinal 2 m straw tubes was demonstrated. Also studying dependence of the tube lengthen with change of humidity and temperature. Bring results test of chamber prototype with size 600×800 mm make in CERN.
KeywordsStraw Drift Tube External Support Tube Operation Wire Position
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