Patent ID: 7881760

Claim:
A measuring structure for a magneto encephalographic equipment in a superconducting magnetic-shield comprising: an vacuum-tight structure comprising: an outer enclosure wall; a first inner enclosure wall inserted in the outer enclosure wall to define an upper closed space; and a second inner enclosure wall to define a lower open space, the first and second inner enclosure walls being arranged with the bottom of the first inner enclosure wall facing the ceiling of the second inner enclosure wall, thereby forming the vacuum-tight space by the first inner enclosure wall, the second inner enclosure wall and the outer enclosure wall; a first enclosure of high critical temperature superconductor; a second enclosure of high permeability material, the first and second enclosures being arranged in the annular vacuum space defined between the first and second inner enclosure walls and the outer enclosure wall; and a plurality of SQUID sensors arranged in the upper closed space, encircling the head-accommodating area, which is delimited by the hollow partition between the bottom of the first inner enclosure wall and the ceiling of the second inner enclosure wall; the SQUID sensors being adapted to be cooled by the coolant in the upper closed space whereas the first inner enclosure of high critical temperature superconductor being adapted to be cooled by the coolant in the annular vacuum space.