Design of three-axis square Helmholtz coils for compact atomic magnetometer
© 2020 SPIE. 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...
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th-cmuir.6653943832-704432020-10-14T08:40:15Z Design of three-axis square Helmholtz coils for compact atomic magnetometer Kittipong Panthinuan Chalermchai Pilapong Waronont Anukool Sumet Sakulsermsuk Computer Science Engineering Materials Science Mathematics © 2020 SPIE. 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. 2020-10-14T08:30:59Z 2020-10-14T08:30:59Z 2020-01-01 Conference Proceeding 1996756X 0277786X 2-s2.0-85082650663 10.1117/12.2552928 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85082650663&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/70443 |
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Computer Science Engineering Materials Science Mathematics Kittipong Panthinuan Chalermchai Pilapong Waronont Anukool Sumet Sakulsermsuk Design of three-axis square Helmholtz coils for compact atomic magnetometer |
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© 2020 SPIE. 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. |
format |
Conference Proceeding |
author |
Kittipong Panthinuan Chalermchai Pilapong Waronont Anukool Sumet Sakulsermsuk |
author_facet |
Kittipong Panthinuan Chalermchai Pilapong Waronont Anukool Sumet Sakulsermsuk |
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Kittipong Panthinuan |
title |
Design of three-axis square Helmholtz coils for compact atomic magnetometer |
title_short |
Design of three-axis square Helmholtz coils for compact atomic magnetometer |
title_full |
Design of three-axis square Helmholtz coils for compact atomic magnetometer |
title_fullStr |
Design of three-axis square Helmholtz coils for compact atomic magnetometer |
title_full_unstemmed |
Design of three-axis square Helmholtz coils for compact atomic magnetometer |
title_sort |
design of three-axis square helmholtz coils for compact atomic magnetometer |
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2020 |
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https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85082650663&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/70443 |
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