Bonn 2020 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 23: Hadron Structure and Spectroscopy VI

HK 23.3: Talk

Wednesday, April 1, 2020, 15:00–15:15, J-HS M

A FAIR Phase-0 Project at MAMI — L. Capozza¹, A. Dbeyssi¹, A. Greiner¹, S. Katilmis¹, F. Maas^1,2,3, J. Moik¹, O. Noll^1,2, D. Rodriguez Pineiro¹, P. Schöner¹, and •S. Wolff¹ — ¹Helmholtz-Institut Mainz, Mainz, Germany — ²Institute of Nuclear Physics, Mainz, Germany — ³PRISMA Cluster of Excellence, Mainz, Germany

Within the FAIR phase-0 project, the use of FAIR equipment at other facilities before the completion of the civil construction is envisaged. The PANDA EMC is a good candidate for FAIR Phase-0, due to the advanced state of its development. In particular, the backward endcap (BWEC) of the PANDA EMC, which is developed and built at HIM in Mainz, could be ready by 2021, three years before its foreseen installation. Therefore, an experiment at the MAMI electron beam facility making use of the BWEC is envisaged.
The π₀ electromagnetic transition form factor via the electroproduction on a nuclear Coulomb field will be quantified. To select this channel, the momentum distribution of the π₀ needs to be measured by detecting the decay γ particles and the scattered electron in the EMC.
Monte Carlo simulations on the detection efficiency are ongoing. These will help to set the final geometry of the calorimeter for the FAIR Phase-0 project. Furtheremore, an event generator with realistic signal and background events will be implemented. The talk will address the current status of the simulation for FAIR Phase-0 at MAMI.