Author/Authors :
Killenberg، نويسنده , , M. and Lotze، نويسنده , , S. and Mnich، نويسنده , , J. and Roth، نويسنده , , S. and Schulte، نويسنده , , R. and Sobloher، نويسنده , , B. and Struczinski، نويسنده , , W. and Tonutti، نويسنده , , M.، نويسنده ,
Abstract :
Measurements and numerical simulations on the charge transfer in Gas Electron Multiplier (GEM) foils are presented and their implications for the usage of GEM foils in Time Projection Chambers are discussed. A small test chamber has been constructed and operated with up to three GEM foils. The charge transfer parameters derived from the electrical currents monitored during the irradiation with an 55Fe source are compared with numerical simulations. The performance in magnetic fields up to 2 T is also investigated.
