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

被引：8

作者：

Ban, G. ^{[1
]}

Bison, G. ^{[2
]}

Bodek, K. ^{[3
]}

Daum, M. ^{[2
]}

Fertl, M. ^{[2
,4
,12
]}

Franke, B. ^{[2
,4
,13
]}

Grujic, Z. D. ^{[5
]}

Heil, W. ^{[7
]}

Horras, M. ^{[2
]}

Kasprzak, M. ^{[2
,5
]}

Kermaidic, Y. ^{[6
,14
]}

Kirch, K. ^{[2
,4
]}

Koch, H-C ^{[2
,5
,7
]}

Komposch, S. ^{[2
,4
]}

Kozela, A. ^{[8
]}

Krempel, J. ^{[4
]}

Lauss, B. ^{[2
]}

Lefort, T. ^{[1
]}

Mtchedlishvili, A. ^{[2
]}

Pignol, G. ^{[6
]}

Piegsa, F. M. ^{[4
,9
]}

Prashanth, P. ^{[2
,4
,10
,12
]}

Quemener, G. ^{[1
]}

Rawlik, M. ^{[3
,4
]}

Rebreyend, D. ^{[6
]}

Ries, D. ^{[2
,4
,15
]}

Roccia, S. ^{[11
]}

Rozpedzik, D. ^{[3
]}

Schmidt-Wellenburg, P. ^{[2
]}

Severijns, N. ^{[10
]}

Weis, A. ^{[5
]}

Wyszynski, G. ^{[3
,4
]}

Zejma, J. ^{[3
]}

Zsigmond, G. ^{[2
]}

机构：

[1] Lab Phys Corpusculaire, Caen, France

[2] Paul Scherrer Inst, Villigen, Switzerland

[3] Jagiellonian Univ, M Smoluchowski Inst Phys, Krakow, Poland

[4] ETH, Inst Particle Phys & Astrophys, Zurich, Switzerland

[5] Univ Fribourg, Fribourg, Switzerland

[6] Lab Phys Subatom & Cosmol, Grenoble, France

[7] Johannes Gutenberg Univ Mainz, Inst Phys, Mainz, Germany

[8] Henryk Niedwodniczanski Inst Nucl Phys, Krakow, Poland

[9] Univ Bern, Albert Einstein Ctr Fundamental Phys, Lab High Energy Phys, Bern, Switzerland

[10] Katholieke Univ Leuven, Leuven, Belgium

[11] Ctr Sci Nucl & Sci Matiere, Orsay, France

[12] Univ Washington, Seattle, WA 98195 USA

[13] TRIUMF, Vancouver, BC, Canada

[14] Max Planck Inst Kernphys, Heidelberg, Germany

[15] Johannes Gutenberg Univ Mainz, Inst Nucl Chem, Mainz, Germany

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2018年 / 896卷

基金：

瑞士国家科学基金会;

关键词：

Zeeman effect; Atomic spectroscopy; Mercury; Electric dipole moment; Neutron; ULTRACOLD; PHYSICS;

D O I：

10.1016/j.nima.2018.04.025

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

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

引用

页码：129 / 138

页数：10