Abstract
Time Projection Chambers (TPCs) with a micro pattern gas amplification stage are best suited for high precision tracking at a future linear collider. Among the major advantages of this technology are the vanishingly small distortions due to EtimesB effects. In order to prove the functionality of this concept, and to study the behavior of such TPCs in high magnetic fields, a small cylindrical TPC prototype has been equipped with two Gas Electron Multipliers (GEMs) and a micro pad readout plane. We discuss results of a test of this setup in high magnetic fields at DESY, where the prototype was placed into a solenoidal magnet with a field of up to 5.5 T. The studies include measurements of transverse and longitudinal spatial resolution using cosmic rays. Special interest is given to dependencies on drift distance, pad geometry, sampling rate, and on various cuts on angles and chi2. We also briefly describe a new method of data analysis and show that the spatial resolution can be improved by taking only a smaller fraction of all data points. With the used gas mixture of Ar:CH4:CO2-93:5:2, transverse spatial resolutions down to 100mum can be achieved
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.