Speaker
Description
Electromagnetic calorimetry in high-radiation environments is particularly challenging with more pronounced requirements for the forward regions of collider detectors. The most viable choice is to construct a sampling calorimeter with radiation-hard active media at the expense of high energy resolution. In order to provide a solution for such implementations, we developed a radiation-hard, fast, robust and cost effective technique: secondary emission calorimetry. In a secondary emission detector module, secondary emission electrons are generated from a cathode when charged hadron or electromagnetic shower particles penetrate the secondary emission sampling module. The generated secondary emission electrons are then multiplied in a similar way as the photoelectrons in photomultiplier tubes. We constructed prototype secondary emission sensors and tested them in test beams. Here we report on the principles of secondary emission calorimetry and the results from beam tests as well as the Monte Carlo simulations with projections to large-scale secondary emission electromagnetic calorimeters at FCC.
