TY  - JOUR
AU  - Faley, Michael
AU  - Gerasimov, I. A.
AU  - Faley, O. M.
AU  - Chocholacs, H.
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, Rafal
TI  - Integration Issues of Graphoepitaxial High-Tc SQUIDs Into Multichannel MEG Systems
JO  - IEEE transactions on applied superconductivity
VL  - 25
IS  - 3
SN  - 1051-8223
CY  - New York, NY
PB  - IEEE
M1  - FZJ-2015-01091
SP  - 1601605
PY  - 2015
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 ∼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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000216431900001
DO  - DOI:10.1109/TASC.2014.2365098
UR  - https://juser.fz-juelich.de/record/187426
ER  -