6533b857fe1ef96bd12b4717

RESEARCH PRODUCT

Design of the Magnet System of the Neutron Decay Facility PERC

Christoph RoickChristoph RoickH. FillungerNataliya RebrovaUlrich SchmidtChristine KlauserChristine KlauserR.k. MaixR.k. MaixR.k. MaixMax LamparthMax LamparthOliver ZimmerTorsten SoldnerD. DubbersXiangzun WangXiangzun WangAlexander HolleringJaqueline ErhartJens KlenkeWerner HeilBastian MärkischBastian MärkischLukas RaffeltLukas RaffeltE. JerichaT. LauerWilfried MachAlexander PethoukovHolger MestHeiko SaulHeiko SaulGertrud KonradRomain VirotHartmut AbeleCarmen ZienerDaniel MoserStefan BodmaierMichael Klopf

subject

Physics - Instrumentation and Detectorsmagnet: designProtonQC1-999FOS: Physical sciencesSuperconducting magnetElectron[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]01 natural sciences7. Clean energyelectron: particle sourcep: particle sourceNuclear physics0103 physical sciencesResearch reactorNeutron[PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det]Nuclear Experiment (nucl-ex)010306 general physicsNuclear ExperimentPhysicsn: semileptonic decay010308 nuclear & particles physicsPhysicsInstrumentation and Detectors (physics.ins-det)magnet: superconductivityMagnetic fieldbeam opticsMagnetPhase spaceHigh Energy Physics::Experiment

description

The PERC (Proton and Electron Radiation Channel) facility is currently under construction at the research reactor FRM II, Garching. It will serve as an intense and clean source of electrons and protons from neutron beta decay for precision studies. It aims to contribute to the determination of the Cabibbo-Kobayashi-Maskawa quark-mixing element $V_{ud}$ from neutron decay data and to search for new physics via new effective couplings. PERC's central component is a 12m long superconducting magnet system. It hosts an 8m long decay region in a uniform field. An additional high-field region selects the phase space of electrons and protons which can reach the detectors and largely improves systematic uncertainties. We discuss the design of the magnet system and the resulting properties of the magnetic field.

https://dx.doi.org/10.48550/arxiv.1905.10249