Speaker
Summary
The electromagnetic calorimeter of the PANDA experiment at FAIR.
P. Rosier, IPN Orsay, for the PANDA collaboration.
The PANDA electromagnetic calorimeter will be installed on the HESR ring of the
FAIR accelerator. Based on the CMS experiment, this calorimeter comprises
19040 lead-tungstate crystals on a nearly 4π coverage. The large dynamic
range from several GeV down to a detection threshold of some MeV for EM
radiation and the expected high background rate of neutrons and ions will
impose severe requirements on crystals and light sensors. This paper presents
the status of the R&D studies performed on different aspects: behaviour of
PWO-II crystals and photo sensors especially on the radiation hardness,
electronics development, particle rate simulations, mechanical design and
integration of the cooling at -25°C stabilized at +/-0.1°C. All these informations
rely on the construction and tests of a real-size prototype of 60 crystals. The
writing of the EMC Technical Design Report is almost performed and presents
the advanced level of the definition. The crystals production and quality control
are in preparation and are foreseen to be in the continuity of the CMS
production.
