This title appears in the Scientific Report :
2015
Please use the identifier:
http://dx.doi.org/10.1109/TASC.2014.2365098 in citations.
Integration Issues of Graphoepitaxial High-Tc SQUIDs Into Multichannel MEG Systems
Integration Issues of Graphoepitaxial High-Tc SQUIDs Into Multichannel MEG Systems
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 transfo...
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Personal Name(s): | Faley, Michael (Corresponding Author) |
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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, Rafal | |
Contributing Institute: |
Physik der Medizinischen Bildgebung; INM-4 Mikrostrukturforschung; PGI-5 |
Published in: | IEEE transactions on applied superconductivity, 25 (2015) 3, S. 1601605 |
Imprint: |
New York, NY
IEEE
2015
|
DOI: |
10.1109/TASC.2014.2365098 |
Document Type: |
Journal Article |
Research Program: |
Controlling Collective States |
Subject (ZB): | |
Publikationsportal JuSER |
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 ∼4 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. |