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Brown Bag Instrumentation Seminar
Calibration of straws for Mu2e using pixel cosmic ray telescope
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US/Pacific
50A-5132
50A-5132
Description
Abstract:
The Mu2e experiment will look for coherent muon to electron conversion with a sensitivity four orders of magnitude better than current limits. A straw tube tracker will be used to measure electron momentum with a precision of a fraction of a percent. Achieving this resolution requires measuring the distance from the wire to within 200 um. LBL has developed and constructed an eight straw prototype tracker in order to test and measure the timing and position resolution of the straws and associated electronics. A pair of two chip ATLAS FEI4 pixel modules were adapted for use as a cosmic ray telescope that allowed us to precisely determine the actual track position relative to the straw wire. We have measured position and time resolution and drift velocities for several running scenarios, confirming that the electronics can achieve the resolution required for the track reconstruction.
The Mu2e experiment will look for coherent muon to electron conversion with a sensitivity four orders of magnitude better than current limits. A straw tube tracker will be used to measure electron momentum with a precision of a fraction of a percent. Achieving this resolution requires measuring the distance from the wire to within 200 um. LBL has developed and constructed an eight straw prototype tracker in order to test and measure the timing and position resolution of the straws and associated electronics. A pair of two chip ATLAS FEI4 pixel modules were adapted for use as a cosmic ray telescope that allowed us to precisely determine the actual track position relative to the straw wire. We have measured position and time resolution and drift velocities for several running scenarios, confirming that the electronics can achieve the resolution required for the track reconstruction.
