Integration issues of graphoepitaxial high-Tc SQUIDs into multichannel MEG systems

M. I. Faley; I. A. Gerasimov; O. M. Faley; H. Chocholacs; J. Dammers; E. Eich; F. Boers; N. J. Shah; A. S. Sobolev; V. Yu Slobodchikov; Yu V. Maslennikov; V. P. Koshelets; R. E. Dunin-Borkowski

doi:10.1109/TASC.2014.2365098

Integration issues of graphoepitaxial high-T_c SQUIDs into multichannel MEG systems

M. I. Faley, I. A. Gerasimov, O. M. Faley, H. Chocholacs, J. Dammers, E. Eich, F. Boers, N. J. Shah, A. S. Sobolev, V. Yu Slobodchikov, Yu V. Maslennikov, V. P. Koshelets, R. E. Dunin-Borkowski

Research output: Contribution to journal › Article › Research › peer-review

6 Citations (Scopus)

Abstract

We have analyzed the possibility to construct multichannel magnetoencephalography (MEG) systems based on high-T_c direct current superconducting quantum interference devices (DC SQUIDs) with graphoepitaxial step edge Josephson junctions. A new layout of multilayer high-T_c superconducting flux transformers was tested and a new type of high-T_c DC SQUID magnetometer intended for MEG systems was realized. These magnetometers have a vacuum-tight capsule of outer diameter 24 mm and a magnetic field resolution of ∼ fT/Hz at 77 K. Crosstalk between adjacent sensors was estimated and measured for in-plane and axial configurations. The vibration-free cooling of sensors, minimization of the sensor-to-object distance and optimization of the sensor positions as well as the gantry design are discussed. Our findings may have implications for the next generation of non-invasive imaging techniques that will be used to understand human brain function.

Original language	English
Number of pages	5
Journal	IEEE Transactions on Applied Superconductivity
Volume	25
Issue number	3
DOIs	https://doi.org/10.1109/TASC.2014.2365098
Publication status	Published - 1 Jun 2015
Externally published	Yes

Keywords

Josephson junctions
magnetoencephalography
magnetometers
SQUIDs

Access to Document

10.1109/TASC.2014.2365098

Link to publication in Scopus

Cite this

Faley, M. I., Gerasimov, I. A., Faley, O. M., Chocholacs, H., Dammers, J., Eich, E., Boers, F., Shah, N. J., Sobolev, A. S., Slobodchikov, V. Y., Maslennikov, Y. V., Koshelets, V. P., & Dunin-Borkowski, R. E. (2015). Integration issues of graphoepitaxial high-T_c SQUIDs into multichannel MEG systems. IEEE Transactions on Applied Superconductivity, 25(3). https://doi.org/10.1109/TASC.2014.2365098

Faley, M. I. ; Gerasimov, I. A. ; Faley, O. M. ; Chocholacs, H. ; Dammers, J. ; Eich, E. ; Boers, F. ; Shah, N. J. ; Sobolev, A. S. ; Slobodchikov, V. Yu ; Maslennikov, Yu V. ; Koshelets, V. P. ; Dunin-Borkowski, R. E. / Integration issues of graphoepitaxial high-T_c SQUIDs into multichannel MEG systems. In: IEEE Transactions on Applied Superconductivity. 2015 ; Vol. 25, No. 3.

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abstract = "We have analyzed the possibility to construct multichannel magnetoencephalography (MEG) systems based on high-Tc direct current superconducting quantum interference devices (DC SQUIDs) with graphoepitaxial step edge Josephson junctions. A new layout of multilayer high-Tc superconducting flux transformers was tested and a new type of high-Tc DC SQUID magnetometer intended for MEG systems was realized. These magnetometers have a vacuum-tight capsule of outer diameter 24 mm and a magnetic field resolution of ∼ fT/Hz at 77 K. Crosstalk between adjacent sensors was estimated and measured for in-plane and axial configurations. The vibration-free cooling of sensors, minimization of the sensor-to-object distance and optimization of the sensor positions as well as the gantry design are discussed. Our findings may have implications for the next generation of non-invasive imaging techniques that will be used to understand human brain function.",

keywords = "Josephson junctions, magnetoencephalography, magnetometers, SQUIDs",

author = "Faley, {M. I.} and Gerasimov, {I. A.} and Faley, {O. M.} and H. Chocholacs and J. Dammers and E. Eich and F. Boers and Shah, {N. J.} and Sobolev, {A. S.} and Slobodchikov, {V. Yu} and Maslennikov, {Yu V.} and Koshelets, {V. P.} and Dunin-Borkowski, {R. E.}",

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doi = "10.1109/TASC.2014.2365098",

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Faley, MI, Gerasimov, IA, Faley, OM, Chocholacs, H, Dammers, J, Eich, E, Boers, F, Shah, NJ, Sobolev, AS, Slobodchikov, VY, Maslennikov, YV, Koshelets, VP & Dunin-Borkowski, RE 2015, 'Integration issues of graphoepitaxial high-T_c SQUIDs into multichannel MEG systems', IEEE Transactions on Applied Superconductivity, vol. 25, no. 3. https://doi.org/10.1109/TASC.2014.2365098

Integration issues of graphoepitaxial high-T_c SQUIDs into multichannel MEG systems. / Faley, M. I.; Gerasimov, I. A.; Faley, O. M.; Chocholacs, H.; Dammers, J.; Eich, E.; Boers, F.; Shah, N. J.; Sobolev, A. S.; Slobodchikov, V. Yu; Maslennikov, Yu V.; Koshelets, V. P.; Dunin-Borkowski, R. E.

In: IEEE Transactions on Applied Superconductivity, Vol. 25, No. 3, 01.06.2015.

Research output: Contribution to journal › Article › Research › peer-review

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AU - Dammers, J.

AU - Eich, E.

AU - Boers, F.

AU - Shah, N. J.

AU - Sobolev, A. S.

AU - Slobodchikov, V. Yu

AU - Maslennikov, Yu V.

AU - Koshelets, V. P.

AU - Dunin-Borkowski, R. E.

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AB - We have analyzed the possibility to construct multichannel magnetoencephalography (MEG) systems based on high-Tc direct current superconducting quantum interference devices (DC SQUIDs) with graphoepitaxial step edge Josephson junctions. A new layout of multilayer high-Tc superconducting flux transformers was tested and a new type of high-Tc DC SQUID magnetometer intended for MEG systems was realized. These magnetometers have a vacuum-tight capsule of outer diameter 24 mm and a magnetic field resolution of ∼ fT/Hz at 77 K. Crosstalk between adjacent sensors was estimated and measured for in-plane and axial configurations. The vibration-free cooling of sensors, minimization of the sensor-to-object distance and optimization of the sensor positions as well as the gantry design are discussed. Our findings may have implications for the next generation of non-invasive imaging techniques that will be used to understand human brain function.

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