München 2019 – wissenschaftliches Programm
HK 54.55: Poster
Donnerstag, 21. März 2019, 16:30–19:00, Foyer Theresanium
Front-end signal path of the P2 experiment at MESA — •Rahima Krini1, Sebastian Baunack1, Dominik Becker1, Michael Gericke2, Frank Maas1,3,4, and David Rodriguez Pineiro3 for the P2 collaboration — 1Institute for Nuclear Physics, Mainz, Germany — 2University of Manitoba, Canada — 3Helmholtz Institute Mainz, Germany — 4PRISMA Cluster of Excellence, Mainz
The MESA accelerator is planned to be built in the next years in the Institute for Nuclear Physics in Mainz. In this research area, the parity-violating asymmetry in the elastic electron-proton scattering was never measured with the precision that the P2 experiment is aiming for. Therefore, many technical challenges have to be solved.
For measuring asymmetries in the order of O(10−9) the front-end signal path at the P2 experiment has to be well thought out. The helicity of the polarized electron beam will be flipped with a reversal rate of f=2 kHz. The bandwidth of the signal path and the sampling rate of the ADC need to be adjusted accordingly. A joint read-out electronics for the P2 experiment in Mainz and for the Moeller experiment at the Jefferson Laboratory is under development by collaborators of the University of Manitoba. The I-U preamplifier prototype with a bandwidth of 1 MHz is already designed and first tests can be performed.