Title:
DC-SQUID FLUXMETER
Document Type and Number:
Japanese Patent JP3206198
Kind Code:
B2
Abstract:
PURPOSE: To provide a DC-SQUID fluxmeter which dispenses with superconductive magnetic shield over a SQUID element, and does not cause an interference among pickup coils even in the case where the fluxmeter is multichanneled.
CONSTITUTION: Input coils 2a, 2b are severally coupled with the each superconductive loop of a differential type DC-SQUID ring 1 having even numbers of superconductive loops 11a, 11b and two spots of Josephson junction parts 12a, 12b, and one superconductive closed loop is formed of each input coil and one pickup coil 3, and a feedback signal fed from a magnetic flux locking circuit 5 is supplied in a differential mode through even numbers of feedback coils 4a, 4b coupled with the superconductive closed loop.
Inventors:
Yasuharu Yamada
Megumi Shinada
Megumi Shinada
Application Number:
JP7373793A
Publication Date:
September 04, 2001
Filing Date:
March 31, 1993
Export Citation:
Assignee:
SHIMADZU CORPORATION
International Classes:
G01R33/025; G01R33/035; H01L39/22; (IPC1-7): G01R33/035
Domestic Patent References:
| JP4204069A | ||||
| JP6370089U |
Attorney, Agent or Firm:
Yoshiro Kurauchi
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