Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1829879 | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment | 2007 | 4 Pages |
Abstract
We report the first results on the operation of an optical double GEM TPC, read out by four photomultipliers in a square array. The detector, operated with Ar+5%CF4Ar+5%CF4 at atmospheric pressure, was tested with 241Am alpha particles emitted in various orientations. We obtained a typical track angle resolution of 2∘2∘(σ)(σ) at 45∘45∘ and achieved a point position resolution of better than 1 mm (FWHM) for the X- and Y-directions in the GEM plane.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Instrumentation
Authors
S.T.G. Fetal, F.A.F. Fraga, L.M.S. Margato, M.M.F.R. Fraga, S.R. Pereira, R. Ferreira Marques, A.J.P.L. Policarpo,