Performance of fully instrumented detector planes of the forward   calorimeter of a Linear Collider detector
  Detector-plane prototypes of the very forward calorimetry of a future detector at an e+e- collider have been built and their performance was measured in an electron beam. The detector plane comprises silicon or GaAs pad sensors, dedicated front-end and ADC ASICs, and an FPGA for data concentration. Measurements of the signal-to-noise ratio and the response as a function of the position of the sensor are presented. A deconvolution method is successfully applied, and a comparison of the measured shower shape as a function of the absorber depth with a Monte-Carlo simulation is given. 
The FCAL Collaboration: H. Abramowicz, A. Abusleme, K. Afanaciev, J.   Aguilar, E. Alvarez, D. Avila, Y. Benhammou, L. Bortk...
physics.ins-det