Thomas Peitzmann, Johan Alme, Rene Barthel, Aart van Bochove, Vyacheslav Borshchov, Robert Bosley, Anthony van den Brink, Edwin Broeils, Henner Büsching, Viljar Nilsen Eikeland, Ola Slettevoll Grøttvik, Younghoon Han, Naomi van der Kolk, J. H. Kim, Taejun Kim, Youngjoon Kwon, Magnus Mager, Qasim Waheed Malik, Else Okkinga, T. Y. Park, Fabian Pliquett, Maksym Protsenko, Felix Reidt, Sebastiaan van Rijk, Ketil Røed, Tim Sebastian Rogoschinski, Dieter Röhrich, Marcel Rossewij, G. B. Ruis, Emilie Haugland Solheim, Ihor Tymchuk, Kjetil Ullaland, Nigel Keith Watson, Hiroki Yokoyama
- A prototype of a new type of calorimeter has been designed and constructed, based on a silicon-tungsten sampling design using pixel sensors with digital readout. It makes use of the Alpide MAPS sensor developed for the ALICE ITS upgrade. A binary readout is possible due to the pixel size of ≈30×30μm2. This prototype has been successfully tested with cosmic muons and with test beams at DESY and the CERN SPS. We report on performance results obtained at DESY, showing good energy resolution and linearity, and compare to detailed MC simulations. Also shown are preliminary results of the high-energy performance as measured at the SPS. The two-shower separation capabilities are discussed.
