Optically pumped Cs magnetometers enabling a high-sensitivity search for the neutron electric dipole moment

被引：25

作者：

Abel, C. ^{[1
]}

Afach, S. ^{[2
,3
]}

Ayres, N. J. ^{[1
,3
]}

Ban, G. ^{[4
]}

Bison, G. ^{[2
]}

Bodek, K. ^{[5
]}

Bondar, V ^{[2
,3
,6
]}

Chanel, E. ^{[7
]}

Chiu, P-J ^{[2
,3
]}

Crawford, C. B. ^{[8
]}

Chowdhuri, Z. ^{[2
]}

Daum, M. ^{[2
]}

Emmenegger, S. ^{[3
]}

Ferraris-Bouchez, L. ^{[9
]}

Fertl, M. ^{[2
,3
,10
]}

Franke, B. ^{[2
,3
,19
]}

Griffith, W. C. ^{[1
]}

Grujic, Z. D. ^{[11
,12
]}

Hayen, L. ^{[6
]}

Helaine, V ^{[2
,4
]}

Hild, N. ^{[2
,3
]}

Kasprzak, M. ^{[2
,6
,11
]}

Kermaidic, Y. ^{[9
,20
]}

Kirch, K. ^{[2
,3
]}

Knowles, P. ^{[11
,21
]}

Koch, H-C ^{[2
,10
,11
]}

Komposch, S. ^{[2
,3
]}

Koss, P. A. ^{[6
]}

Kozela, A. ^{[13
]}

Krempel, J. ^{[3
]}

Lauss, B. ^{[2
]}

Lefort, T. ^{[4
]}

Lemiere, Y. ^{[4
]}

Leredde, A. ^{[9
]}

Mtchedlishvili, A. ^{[2
]}

Mohanmurthy, P. ^{[2
,3
]}

Musgrave, M. ^{[1
,22
]}

Naviliat-Cuncic, O. ^{[4
]}

Pais, D. ^{[2
,3
]}

Pazgalev, A. ^{[14
]}

Piegsa, F. M. ^{[7
]}

Pierre, E. ^{[2
,4
]}

Pignol, G. ^{[9
]}

Prashanth, P. N. ^{[2
,6
]}

Quemener, G. ^{[4
]}

Rawlik, M. ^{[3
]}

Rebreyend, D. ^{[9
]}

Ries, D. ^{[15
]}

Roccia, S. ^{[16
,17
]}

Rozpedzik, D. ^{[5
]}

机构：

[1] Univ Sussex, Dept Phys & Astron, Brighton BN1 9QH, E Sussex, England

[2] Paul Scherrer Inst, Villigen 5232, Switzerland

[3] Eidgenoss Tech Hsch Zurich, Inst Particle Phys & Astrophys, Zurich 8093, Switzerland

[4] Normandie Univ, ENSICAEN, UNICAEN, CNRS,IN2P3,LPC Caen, Caen, France

[5] Jagiellonian Univ, Marian Smoluchowski Inst Phys, Krakow 30348, Poland

[6] Katholieke Univ Leuven, Inst Kern & Stralingsfys, Leuven 3001, Belgium

[7] Univ Bern, Albert Einstein Ctr Fundamental Phys, Lab High Energy Phys, Bern 3012, Switzerland

[8] Univ Kentucky, Lexington, KY 40506 USA

[9] Univ Grenoble Alpes, CNRS, Grenoble INP, LPSC,IN2P3, Grenoble, France

[10] Johannes Gutenberg Univ Mainz, Inst Phys, Mainz 55128, Germany

[11] Univ Fribourg, Phys Dept, Fribourg 1700, Switzerland

[12] Univ Belgrade, Inst Phys Belgrade, Belgrade 11080, Serbia

[13] Polish Acad Sci, Henryk Niewodniczanski Inst Nucl Phys, Krakow 31342, Poland

[14] Ioffe Phys Tech Inst, St Petersburg 194021, Russia

[15] Johannes Gutenberg Univ Mainz, Inst Kernchem, Mainz 55128, Germany

[16] Univ Paris Saclay, CNRS, IN2P3, CSNSM,Univ Paris Sud, Orsay, France

[17] Inst Laue Langevin, Grenoble 38042, France

[18] Phys Tech Bundesanstalt, D-10587 Berlin, Germany

[19] TRIUMF, Vancouver, BC, Canada

[20] Max Planck Inst Kernphys, Heidelberg, Germany

[21] LogrusData, Toronto, ON, Canada

[22] MIT, 77 Massachusetts Ave, Cambridge, MA 02139 USA

[23] CERN, Geneva, Switzerland

来源：

PHYSICAL REVIEW A | 2020年 / 101卷 / 05期

基金：

英国科学技术设施理事会; 瑞士国家科学基金会; 芬兰科学院;

关键词：

EXPERIMENTAL LIMIT;

D O I：

10.1103/PhysRevA.101.053419

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

An array of 16 laser-pumped scalar Cs magnetometers was part of the neutron electric dipole moment (nEDM) experiment taking data at the Paul Scherrer Institute in 2015 and 2016. It was deployed to measure the gradients of the experiment's magnetic field and to monitor their temporal evolution. The originality of the array lies in its compact design, in which a single near-infrared diode laser drives all magnetometers that are located in a high-vacuum chamber, with a selection of the sensors mounted on a high-voltage electrode. We describe details of the Cs sensors' construction and modes of operation, emphasizing the accuracy and sensitivity of the magnetic-field readout. We present two applications of the magnetometer array directly beneficial to the nEDM experiment: (i) the implementation of a strategy to correct for the drift of the vertical magnetic-field gradient and (ii) a procedure to homogenize the magnetic field. The first reduces the uncertainty of the nEDM result. The second enables transverse neutron spin relaxation times exceeding 1500 s, improving the statistical sensitivity of the nEDM experiment by about 35% and effectively increasing the rate of nEDM data taking by a factor of 1.8.

引用

页数：17

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