Experimental beam test demonstrates robust signal response and shower modeling in forward calorimeter prototypes, indicating feasibility for future electron-positron colliders.
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.
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Abramowicz et al. (2015) studied this question.
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