Bochum 2018 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 55: Hadron Structure and Spectroscopy IX
HK 55.2: Vortrag
Freitag, 2. März 2018, 14:30–14:45, HZO 50
Feasability Studies for a FAIR Phase-0 Project at MAMI — S. Ahmed1,2, L. Capozza1, A. Dbeyssi1, P. Grasemann1,2, F. Maas1,2,3, O. Noll1,2, D. Rodriguez Pineiro1, •S. Wolff1,2, M. Zambrana1,2, and I. Zimmermann1,2 — 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 2020, three years before its foreseen installation. Therefore, possible experiments at the MAMI electron beam facility making use of the BWEC are under consideration.
One candidate is the measurement of the π0 electromagnetic transition form factor via the electroproduction on a nuclear Coulomb field. To select this channel, the momentum distribution of the π0 needs to be measured by detecting the decay γ particles in an EMC.
Since the relevant γs are emitted at forward angles, where high particle fluxes are expected, the affordable luminosity is limited by the maximum event rate of the detector. Therefore, the total event rate at different scattering angles with various targets need to be determined.
Monte Carlo simulations are ongoing and a beam test with a prototype calorimeter was scheduled for January 2018 in order to address these questions. The status of these feasibility studies will be presented.