Yu Sakamoto

General Solution of the Hollow Cylinder and Concentric DC Surface Current

We provide a general solution to the problem of an infinitely long, hollow cylinder of uniform, linear permeability in the presence of any continuous dc current distribution residing on a concentric cylindrical surface. The solution is expressed in terms of the spatial Fourier components of the applied surface current. Applications of this study include the design of dc magnetic shields and shield-coupled coils, as well as a benchmark for finite-element analysis. Examples involving canonical current structures-loops, solenoids, and saddle-shaped coils-are presented.

Development of co-located 129 Xe and 131 Xe nuclear spin masers with external feedback scheme

We report on the operation of co-located Xe and Xe nuclear spin masers with an external feedback scheme, and discuss the use of Xe as a comagnetometer in measurements of the Xe spin precession frequency. By applying a correction based on the observed change in the Xe frequency, the frequency instability due to magnetic field and cell temperature drifts are eliminated by two orders of magnitude. The frequency precision of 6.2 μHz is obtained for a 10 s averaging time, suggesting the possibility of future improvement to ≈ 1 nHz by improving the signal-to-noise ratio of the observation.

Development Of 131Xe Co-magnetometry For Xe Atomic EDM Search

Co-magnetometry enables the elimination of systematic errors arising from the long-term drift in the magnetic field, and is essential for a precision measurement of spin precession frequency in experiments searching for electric dipole moment (EDM).

Development of high-homogeneity magnetic field coil for 129Xe EDM experiment

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Active nuclear spin maser oscillation with double cell

Xe nuclear spin maser shows great promise as a co-magnetometer in a Xe EDM experiment, because the systematic error originating from the Xe-Rb interaction, which virtually limits the sensitivity in a case of a

Search for electric dipole moment in 129Xe atom using active nuclear spin maser

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Double-Cell Geometry for 129Xe/3He Co-Magnetometry

He co-magnetometer, will be cancelled out. The performance of a cell which contains both

EDM measurement in 129Xe atom using dual active feedback nuclear spin maser

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Development of a high intensity laser for efficient spin exchange optical pumping in a spin maser measurement of the 129Xe EDM

Xe and

129 Xe EDM Search Experiment Using Active Nuclear Spin Maser

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