Cosmic ray tests of a GEM-based TPC prototype operated in Ar-CF4-isobutane gas mixtures

Abstract

Argon with an admixture of CF4 is expected to be a good candidate for the gas mixture to be used for a time projection chamber (TPC) in the future linear collider experiment because of its small transverse diffusion of drift electrons especially under a strong magnetic field. In order to confirm the superiority of this gas mixture over conventional TPC gases we carried out cosmic ray tests using a GEM-based TPC operated mostly in Ar-CF4-isobutane mixtures under 0 - 1 T axial magnetic fields. The measured gas properties such as gas gain and transverse diffusion constant as well as the observed spatial resolution are presented.

A supplemental material (Addendum to be published in Nucl. Instrum. Methods Phys. Res. A) was added at the end of the manuscript to help readers understand the formulas in Appendix B. No changes in the conclusion. 24 pages, including 21 figures

References in corpus (5)

• Study in a beam test of the resolution of a Micromegas TPC with standard readout pads
• An Estimation of the Effective Number of Electrons Contributing to the Coordinate Measurement with a TPC
• Development of a Time Projection Chamber Using Gas Electron Multipliers (GEM-TPC)
• A DAQ System for Linear Collider TPC Prototypes based on the ALEPH TPC Electronics
• A Beam Test of Prototype TPCs using Micro-Pattern Gas Detectors at KEK

Cited by in corpus (7)

• An estimation of the effective number of electrons contributing to the coordinate measurement with a TPC II
• Cosmic ray tests of a GEM-based TPC prototype operated in Ar-CF4-isobutane gas mixtures: II
• A novel technique for the measurement of the avalanche fluctuation of gaseous detectors
• Measurement of the electron transmission rate of the gating foil for the TPC of the ILC experiment
• A novel technique for the measurement of the avalanche fluctuations of a GEM stack using a gating foil
• Calibration of a Micromegas-based Gaseous Time Projection Chamber Using Cosmic Ray Muons
• Performance of a large aperture GEM-like gating device for the International Linear Collider