6533b857fe1ef96bd12b46ec
RESEARCH PRODUCT
Demonstration of sensitivity increase in mercury free-spin-precession magnetometers due to laser-based readout for neutron electric dipole moment searches
Geza ZsigmondM. DaumJacek ZejmaNathal SeverijnsM. RawlikM. RawlikY. KermaidicA. KozelaP. PrashanthP. PrashanthP. PrashanthA. MtchedlishviliPhilipp Schmidt-wellenburgBernhard LaussGeorg BisonFlorian M. PiegsaFlorian M. PiegsaG. QuéménerGrzegorz WyszyńskiGrzegorz WyszyńskiD. RiesD. RiesAntoine WeisH.-c. KochH.-c. KochD. RozpedzikJ. KrempelS. RocciaMartin FertlMartin FertlMalgorzata KasprzakB. FrankeB. FrankeWerner HeilZoran D. GrujićM. HorrasG. BanD. RebreyendS. KomposchS. KomposchKazimierz BodekKlaus KirchKlaus KirchGuillaume PignolT. Lefortsubject
Nuclear and High Energy PhysicsPhysics - Instrumentation and DetectorsNeutron electric dipole momentAtomic Physics (physics.atom-ph)Magnetometeratomic spectroscopyFOS: Physical sciencesAtomic spectroscopyNeutronelectric dipole moment[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]01 natural scienceslaw.inventionHigh Energy Physics - ExperimentPhysics - Atomic PhysicsHigh Energy Physics - Experiment (hep-ex)symbols.namesakeneutronlaw0103 physical sciencesNeutron[PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det][ PHYS.NEXP ] Physics [physics]/Nuclear Experiment [nucl-ex]Nuclear Experiment (nucl-ex)010306 general physicsZeeman effect; Atomic spectroscopy; Mercury; Electric dipole moment; Neutron[ PHYS.PHYS.PHYS-INS-DET ] Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det]InstrumentationNuclear ExperimentPhysicsZeeman effectElectric dipole moment010308 nuclear & particles physicsInstrumentation and Detectors (physics.ins-det)Zeeman effectMercuryLaserComputational physicsMagnetic fieldElectric dipole momentAtomic spectroscopysymbolsdescription
International audience; We report on a laser based $^{199}$Hg co-magnetometer deployed in an experiment searching for a permanent electric dipole moment of the neutron. We demonstrate a more than five times increased signal to-noise-ratio in a direct comparison measurement with its $^{204}$Hg discharge bulb-based predecessor. An improved data model for the extraction of important system parameters such as the degrees of absorption and polarization is derived. Laser- and lamp-based data-sets can be consistently described by the improved model which permits to compare measurements using the two different light sources and to explain the increase in magnetometer performance. The laser-based magnetometer satisfies the magnetic field sensitivity requirements for the next generation nEDM experiments.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2018-01-01 |