Details

Autor(en) / Beteiligte

• Ban, G.
• Bison, G.
• Bodek, K.
• Daum, M.
• Fertl, M.
• Franke, B.
• Grujić, Z.D.
• Heil, W.
• Horras, M.
• Kasprzak, M.
• Kermaidic, Y.
• Kirch, K.
• Koch, H.-C.
• Komposch, S.
• Kozela, A.
• Krempel, J.
• Lauss, B.
• Lefort, T.
• Mtchedlishvili, A.
• Pignol, G.
• Piegsa, F.M.
• Prashanth, P.
• Quéméner, G.
• Rawlik, M.
• Rebreyend, D.
• Ries, D.
• Roccia, S.
• Rozpedzik, D.
• Schmidt-Wellenburg, P.
• Severijns, N.
• Weis, A.
• Wyszynski, G.
• Zejma, J.
• Zsigmond, G.

Titel

Demonstration of sensitivity increase in mercury free-spin-precession magnetometers due to laser-based readout for neutron electric dipole moment searches

Ist Teil von

• Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 2018-07, Vol.896, p.129-138

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2018

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• We report on a laser based 199Hg 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 204Hg 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.