SUPERCONDUCTING MAGNETIC FIELD GENERATING DEVICE AND SUPERCONDUCTING DETECTOR,申请号JP19990165981-传众专利搜索

SUPERCONDUCTING MAGNETIC FIELD GENERATING DEVICE AND SUPERCONDUCTING DETECTOR

申请公布号：JP2000356681(A)

申请号：JP19990165981

申请日期：1999.06.11

申请公布日期：2000.12.26

申请人：

AGENCY OF IND SCIENCE & TECHNOL

发明人：NAKAGAWA HIROSHI;AOYANAGI MASAHIRO;AKAHO HIROSHI

分类号：G01T1/24;G01T1/00;H01L39/22;(IPC1-7):G01T1/24

主分类号：G01T1/24

摘要：PROBLEM TO BE SOLVED: To provide a superconducting magnetic field generating device capable of generating a large magnetic field inside by giving a weak initial current from the outside, capable of generating finally a magnetic field by a superconducting permanent current in the separated state from the outside with no electric power supplied, and capable of generating a magnetic field by utilizing the superconducting permanent current with no loss, and a superconducting detector. SOLUTION: A superconducting tunnel junction element 5 is, for example, a radiation detector with a micro-strip coil, and is arranged inside a very low temperature environment 8. A direct current is applied on a primary coil 21 of a superconducting transformer 2 from a direct-current power source 1 to send the current into a first superconducting loop 6, and a control signal is given to a first superconducting gate 3 to set a circulating current in the first and a second superconducting loop circuits 6, 7, and the direct current in the primary coil 21 of the superconducting transformer 2 is reduced, and a superconducting permanent circulating current is generated in the second superconducting loop circuit 7. And besides, when the superconducting permanent circulating current flows in the second superconducting loop circuit 7, the superconducting permanent circulating current is cut off by switching the first and a second superconducting gates 3, 4 simultaneously.