Design of three-axis square Helmholtz coils for compact atomic magnetometer

Kittipong Panthinuan; Chalermchai Pilapong; Waronont Anukool; Sumet Sakulsermsuk

doi:10.1117/12.2552928

11 March 2020 Design of three-axis square Helmholtz coils for compact atomic magnetometer

Kittipong Panthinuan, Chalermchai Pilapong, Waronont Anukool, Sumet Sakulsermsuk

Proceedings Volume 11331, Fourth International Conference on Photonics Solutions (ICPS2019); 113310P (2020) https://doi.org/10.1117/12.2552928
Event: Fourth International Conference on Photonic Solutions (ICPS 2019), 2019, Chiang Mai, Thailand

Abstract

Compact atomic magnetometer (AM) has potential applications in biomedical devices to measure magnetic signals from human organs, e.g. magnetocardiography and magnetoencephalography. Reducing the size of Helmholtz coils is an essential step for a design of compact AM, which also leads to lower cost in manufacturing processes. However, the homogeneity and magnitude of the magnetic fields and the size of a rubidium vapor cell must be considered for the decrease of the coil size. Here, we report a design of compact AM with square Helmholtz coils of 24×24×24 cm³ housing a rubidium vapor cell of 7.5 cm in length. The coils were calculated to induce a constant magnetic field of 0.5 gauss covering the length of 10 cm along the axis of symmetry of the coils. The field gradient was measured to be less than 4% of the magnitude over the distance of 6 cm. For zero-field condition, the field gradient was no more than 1 mgauss in all axes. Further developments of square Helmholtz coils for improving the field gradients are still needed before implementing in the compact AM.

Citation Download Citation

Kittipong Panthinuan, Chalermchai Pilapong, Waronont Anukool, and Sumet Sakulsermsuk "Design of three-axis square Helmholtz coils for compact atomic magnetometer", Proc. SPIE 11331, Fourth International Conference on Photonics Solutions (ICPS2019), 113310P (11 March 2020); https://doi.org/10.1117/12.2552928

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available