Magnetic sensor

Abstract

According to this invention, a magnetic sensor (1) for measuring a magnetic field distribution of an object (40) by using a SQUID (7), includes an inner container (3) forming a substantially cup-like shape to store therein a coolant (8) for cooling the SQUID, an outer container (2) which stores the inner container and has a window (23) at a position opposing a bottom of the inner container (3), and a heat conductor (6) located such that one side thereof is attached to a heat conductor attaching portion (3b) of the bottom of the inner container and the other side thereof opposes the window of the outer container, the other side being attached with the SQUID, wherein a space (4) between the inner container (3) and the outer container (2) is held in substantial vacuum, the inner container (3) is made of a metal material, and the outer container (2) is made of a nonmetallic material.

Dependencies are inferred from the claim text.