Résumé du preprint DAPNIA-07-35

Study in a beam test of the resolution of a Micromegas TPC with standard readout pads
D. C. Arogancia, A.M. Bacala, K. Boudjemline, D. R. Burke, P. Colas, M. Dixit, K. Fujii, H. Fujishima, A. Giganon, I. Giomataris, H. C. Gooc, M. Habu, T. Higashi, Y. Kato, M. Kobayashi, H. Kuroiwa, V. Lepeltier, T. Matsuda, S. Matsushita, K. Nakamura, O. Nitoh, R. L. Reserva, Ph. Rosier, K. Sachs, R. Settles, A. Sugiyama, T. Takahashi, T. Watanabe, A. Yamaguchi, H. Yamaoka, Th. Zerguerras
The results of a beam test performed at the KEK PS in June 2005 are presented. Drift properties of an Argon-Isobutane 
mixture have been accurately measured and compared to predictions at magnetic fields between 0 and 1 Tesla. 
The r.m.s. point resolution of a padrow is compared to simulation and to an analytical calculation.
The fundamental limitations due to detector geometry and gas properties are reviewed and the measured 
performances of the detector are found to be close to this limit. A numerical application to the case of a 
Linear Collider TPC is presented.


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