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RESEARCH PRODUCT

Beam parameter stabilization for the P2 experiment at MESA

Frank FichtnerJ. DiefenbachK. AulenbacherRuth Kempf

subject

PhysicsNuclear and High Energy Physicsmedia_common.quotation_subjectParity (physics)ElectronHelicityAsymmetryMesaNuclear physicsControl systemProton scatteringPhysics::Accelerator PhysicsNuclear ExperimentInstrumentationcomputerMicrotroncomputer.programming_languagemedia_common

description

Abstract The P2 Experiment at MESA (Mainz Energy-recovering Superconducting Accelerator) will measure the weak mixing angle via electron proton scattering at 155 MeV. The expected measured parity violation asymmetry will be about 40 ppb. This requires a high precision beam diagnostic and control system in order to minimize asymmetries that derive from helicity correlated fluctuations of the beam parameters. A control system for position and angle has been installed and tested at MAMI (Mainz Microtron) and the P2 precision requirements for determining the asymmetry and controlling the transverse beam parameters have been met.

yearjournalcountryeditionlanguage
2020-12-01Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
https://doi.org/10.1016/j.nima.2020.164554