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Digital high-tc squid sensors for non destructive evaluation in unshielded environment

Digital high-tc squid sensors for non destructive evaluation in unshielded environment

Objective

Superconducting Quantum Devices (SQUIDs) can sense magnetic fields in ambient environment with a resolution of better than 1 pT/vHz. Such sensitivity allows, e.g., for the development of new and better Non Destructive Testing techniques. The current analogue operation of SQUIDs in quite simple cryogenic systems is not adequate for such industrial applications. Radically new ways have to be followed in the designs of the sensors, their electronic readout, the cooling and the overall system aspects. Digital HTS-SQUIDs will be applied with active digital feedback circuits incorporating advanced digital real-time filtering and pre-knowledge based active compensation of strong noise signals. We intend to reach a sensitivity of better than 1pT/sqrt(Hz) in an ambient background field of up to 50 µT and a slew rate of more than 106 flux quanta per second in a push-button system approach.

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Coordinator

THALES CRYOGENICS BV

Address

Hooge Zijde 14
5626 Hc Eindhoven

Netherlands

Administrative Contact

Antonius BENSHOP

Participants (6)

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Italian Institute for the Physics of Matter

Italy

TECHNICAL UNIVERSITY OF ILMENAU

Germany

THALES S.A.

France

TWENTE SOLID STATE TECHNOLOGY B.V.

Netherlands

UNIVERSITY OF TWENTE

Netherlands

University of Cambridge

United Kingdom

Project information

Grant agreement ID: G6RD-CT-2002-00790

  • Start date

    1 October 2002

  • End date

    31 December 2006

Funded under:

FP5-GROWTH

  • Overall budget:

    € 2 415 923

  • EU contribution

    € 1 561 646

Coordinated by:

THALES CRYOGENICS BV

Netherlands