Forgot your password?
Measurements of Diffusion and Resolution for a Large-Area Micromegas Time Projection Chamber
Michael Ronan (LBNL (Berkeley))
Email address: ronan@lbl.gov
Session: detector/tracking
Requested time: 20 min.
Abstract submission date: 08 Jun 2004
Session: detector/tracking
Requested time: 20 min.
Abstract submission date: 08 Jun 2004
Abstract:
We present precision measurements of diffusion for relatively long drift lengths of 50 cm in gas mixtures of Ar-CF4:3%, Ar-CH4:10% (P10) and Ar-Isobutane:5%. The large-area, 50 cm diameter, Micromegas TPC, operating with low gas gains of order 1000-3000 and low electronic noise of less than 1000 electrons, is instrumented with 1024 channels of highly-integrated STAR front-end electronics. Single point resolution measurements made from reconstructed cosmic ray tracks in magnetic fields varying up to 2 Tesla will be compared to both the expected precision and requirements for a future Linear Collider TPC.
