Journal article
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A high-sensitivity laser-pumped Mx magnetometer
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Groeger, Stephan
Physics Department, Université de Fribourg, Switzerland - Paul Scherrer Institute, Villigen, Switzerland
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Bison, Georg
Physics Department, Université de Fribourg, Switzerland
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Schenker, Jean-Luc
Physics Department, Université de Fribourg, Switzerland
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Wynands, Robert
Physics Department, Université de Fribourg, Switzerland
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Weis, Antoine
Physics Department, Université de Fribourg, Switzerland
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Published in:
- The European Physical Journal D. - 2006, vol. 38, no. 2, p. 239-247
English
We discuss the design and performance of a laser-pumped cesium vapor magnetometer in the Mx configuration. The device will be employed in the control and stabilization of fluctuating magnetic fields and gradients in a new experiment searching for a permanent electric dipole moment of the neutron. We have determined the intrinsic sensitivity of the device to be 15 fT in a 1 Hz bandwidth, limited by technical laser noise. In the shot noise limit the magnetometer can reach a sensitivity of 10 fT in a 1 Hz bandwidth. We have used the device to study the fluctuations of a stable magnetic field in a multi-layer magnetic shield for integration times in the range of 2–100 seconds. The residual fluctuations for times up to a few minutes are traced back to the instability of the power supply used to generate the field.
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Faculty
- Faculté des sciences et de médecine
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Department
- Département de Physique
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Language
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Classification
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Physics
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License
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License undefined
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Identifiers
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Persistent URL
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https://folia.unifr.ch/unifr/documents/299996
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