Author/Authors :
Margato، نويسنده , , L.M.S. and Fraga، نويسنده , , F.A.F and Fetal، نويسنده , , S.T.G and Fraga، نويسنده , , M.M.F.R and Balau، نويسنده , , E.F.S. and Blanco، نويسنده , , A. and Marques، نويسنده , , R. Ferreira and Policarpo، نويسنده , , A.J.P.L، نويسنده ,
Abstract :
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.
Keywords :
GEM detectors , Scintillation , Time projection chamber , Optical readout , Neutron spectrometry , CCD
