Results from the EPICAL-2 ultra-high granularity electromagnetic calorimeter prototype

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 $\approx...

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Detalles Bibliográficos
Autores principales: Peitzmann, T., Alme, J., Barthel, R., van Bochove, A., Borshchov, V., Bosley, R., Brink, A. van den, Broeils, E., Büsching, H., Eikeland, V.N., Groettvik, O.S., Han, Y.H., van der Kolk, N., Kim, J.H., Kim, T.J., Kwon, Y., Mager, M., Malik, Q.W., Okkinga, E., Park, T.Y., Pliquett, F., Protsenko, M., Reidt, F., van Rijk, S., Røed, K., Rogoschinski, T.S., Röhrich, D., Rossewij, M.J., Ruis, G.B., Solheim, E.H., Tymchuk, I., Ullaland, K., Watson, N.K., Yokoyama, H.
Lenguaje:eng
Publicado: 2022
Materias:
physics.ins-det
hep-ex
Detectors and Experimental Techniques
Particle Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1016/j.nima.2022.167539
http://cds.cern.ch/record/2842867
Descripción
Sumario: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 $\approx 30 \times 30 \, \mu \mathrm{m}^2$. 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.

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