DEWAR FOR BIOLOGICAL MAGNETISM MEASUREMENT APPARATUS, BIOLOGICAL MAGNETISM MEASUREMENT APPARATUS INCLUDING THE SAME AND MANUFACTURING METHOD THEREOF

摘要

PURPOSE: A dewar for measuring biological magnetism, a biological magnetism measuring device including the same, and a manufacturing method thereof are provided to improve the sensitivity of a squid magnetic sensor by decreasing a measurement distance with a biological area. CONSTITUTION: An internal container(110) accepts a low temperature refrigerant(112) and a plurality of first grooves(116). An external container(120) has a plurality of grooves(124) corresponding to the first grooves. A vacuum unit(130) is formed between the internal container and the external container. A squid magnetic sensor(140) is mounted in the first groove and senses a biological magnetic field. The low temperature refrigerant is made of liquid helium or liquid nitrogen phosphorus.