Superconducting magnet and method for adjusting the same
AssigneeMitsubishi Electric Corporation
InventorHajime Tamura
Life of this patent
Estimating the term…
Abstract
A superconducting magnet includes a pair of superconducting coils, two heat shields surrounding the pair of superconducting coils, respectively, two vacuum chambers accommodating the two heat shields, respectively, and facing each other with a predetermined space sandwiched therebetween, a magnetic shield covering at least a portion of the two vacuum chambers, and two position adjustment mechanisms supporting the two vacuum chambers, respectively, in a position-adjustable manner. The two position adjustment mechanisms change distribution of a static magnetic field formed in the predetermined space by the pair of superconducting coils, by adjusting relative positional relation between the two vacuum chambers.
Claims8
A superconducting magnet, comprising:
- a pair of superconducting coils;
- two heat shields surrounding said pair of superconducting coils, respectively;
- two vacuum chambers accommodating said two heat shields, respectively, and facing each other with a predetermined space sandwiched therebetween;
- a magnetic shield covering at least a portion of said two vacuum chambers;
- and
- two position adjustment mechanisms supporting said two vacuum chambers, respectively, in a position-adjustable manner,
- said two position adjustment mechanisms changing distribution of a static magnetic field formed in said predetermined space by said pair of superconducting coils, by adjusting relative positional relation between said two vacuum chambers,
- said magnetic shield having two through holes as position references for adjustment of positions of said two vacuum chambers by said two position adjustment mechanisms.
A method for adjusting a superconducting magnet, the superconducting magnet including a pair of superconducting coils, two heat shields surrounding said pair of superconducting coils, respectively, two vacuum chambers accommodating said two heat shields, respectively, and facing each other with a predetermined space sandwiched therebetween, a magnetic shield covering at least a portion of said two vacuum chambers, and two position adjustment mechanisms supporting said two vacuum chambers, respectively, in a position-adjustable manner, the method comprising the steps of:
- measuring distribution of a static magnetic field formed in said predetermined space by said pair of superconducting coils, with a magnetic sensor;
- and
- adjusting relative positional relation between said two vacuum chambers by said two position adjustment mechanisms, based on a result of measurement with said magnetic sensor in the step of measuring the distribution of said static magnetic field,
- in the step of measuring the distribution of said static magnetic field, said magnetic sensor being arranged within said predetermined space by attaching a jig for said magnetic sensor to a through hole in said magnetic shield, said through hole being a position reference as a basis for adjusting the relative positional relation between said two vacuum chambers.
Dependencies are inferred from the claim text.