%0 Journal Article
%A Faley, Michael
%A Gerasimov, I. A.
%A Faley, O. M.
%A Chocholacs, H.
%A Dammers, J.
%A Eich, E.
%A Boers, F.
%A Shah, N. J.
%A Sobolev, A. S.
%A Slobodchikov, V. Yu.
%A Maslennikov, Yu. V.
%A Koshelets, V. P.
%A Dunin-Borkowski, Rafal
%T Integration Issues of Graphoepitaxial High-Tc SQUIDs Into Multichannel MEG Systems
%J IEEE transactions on applied superconductivity
%V 25
%N 3
%@ 1051-8223
%C New York, NY
%I IEEE
%M FZJ-2015-01091
%P 1601605
%D 2015
%X 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.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000216431900001
%R 10.1109/TASC.2014.2365098
%U https://juser.fz-juelich.de/record/187426