6533b86dfe1ef96bd12c9fee

RESEARCH PRODUCT

Mapping of the magnetic field to correct systematic effects in a neutron electric dipole moment experiment

C. AbelN.j. AyresG. BanG. BisonK. BodekV. BondarE. ChanelP.-j. ChiuB. ClémentC.b. CrawfordM. DaumS. EmmeneggerL. Ferraris-bouchezM. FertlP. FlauxA. FratangeloW.c. GriffithZ.d. GrujićP.g. HarrisL. HayenN. HildM. KasprzakK. KirchP. KnowlesH.-c. KochS. KomposchP.a. KossA. KozelaJ. KrempelB. LaussT. LefortY. LemièreP. MohanmurthyO. Naviliat-cuncicD. PaisF.m. PiegsaG. PignolP.n. PrashanthG. QuéménerM. RawlikD. RiesD. RebreyendS. RocciaD. RozpedzikP. Schmidt-wellenburgA. SchnabelN. SeverijnsJ.a. ThorneR. VirotA. WeisE. WurstenG. WyszynskiJ. ZejmaG. Zsigmond

subject

magnetic field: spatial distributionn: electric momentmercuryPhysics - Instrumentation and Detectorsmeasurement methodsFOS: Physical sciencesInstrumentation and Detectors (physics.ins-det)[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]High Energy Physics - ExperimentHigh Energy Physics - Experiment (hep-ex)[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex][PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det]Physics::Atomic PhysicsNuclear Experiment (nucl-ex)Nuclear Experiment

description

Experiments dedicated to the measurement of the electric dipole moment of the neutron require outstanding control of the magnetic-field uniformity. The neutron electric dipole moment (nEDM) experiment at the Paul Scherrer Institute uses a Hg199 co-magnetometer to precisely monitor temporal magnetic-field variations. This co-magnetometer, in the presence of field nonuniformity, is, however, responsible for the largest systematic effect of this measurement. To evaluate and correct that effect, offline measurements of the field nonuniformity were performed during mapping campaigns in 2013, 2014, and 2017. We present the results of these campaigns, and the improvement the correction of this effect brings to the neutron electric dipole moment measurement. ISSN:1094-1622 ISSN:0556-2791 ISSN:1050-2947

10.1103/physreva.106.032808http://arxiv.org/abs/2103.09039