Performance of an optical readout GEM-based TPC

• Author(s): Margato, L. M. S. ; Fraga, F. A. F. ; Fetal, S. T. G. ; Fraga, M. M. F. R. ; Balau, E. F. S. ; Blanco, A. ; Marques, R. Ferreira ; Policarpo, A. J. P. L
• Date: 2004
• Persistent ID: http://hdl.handle.net/10316/4428
• Origin: Estudo Geral - Universidade de Coimbra
• Subject(s): GEM detectors; Scintillation; Optical readout; Time projection chamber; Neutron spectrometry
• Document Type: Article
• Language: English

Description

We report on the operation of a GEM-based small TPC using an optical readout. The detector was operated with a mixture of Ar+CF4 using 5.48 MeV alpha particles obtained from a 241Am source and the GEM scintillation was concurrently read by a CCD camera and a photomultiplier. Precision collimators were used to define the track orientation. Qualitative results on the accuracy of the track angle, length and charge deposition measurements are presented. http://www.sciencedirect.com/science/article/B6TJM-4D2WJ6F-D/1/8a84de455ac5776cb3d1993dd607e10b