• DocumentCode
    1023200
  • Title

    SQUID-based rock magnetometer with open-ended horizontal room-temperature access

  • Author

    Brake, H. J M ter ; la Court, P.d. ; Lenferink, A.T.M. ; Ulfman, J.A. ; Flokstra, J.

  • Author_Institution
    University of Twente, The Netherlands
  • Volume
    23
  • Issue
    2
  • fYear
    1987
  • fDate
    3/1/1987 12:00:00 AM
  • Firstpage
    1110
  • Lastpage
    1113
  • Abstract
    We constructed a 3-channel SQUID-based rock magnetometer with an open-ended horizontal room-temperature access having an inner diameter of 38 mm. A refrigerator is incorporated for cooling two radiation shields so that an operating time can be realized of about 10 weeks with a reservoir volume of 26.7 litres. The temperature variation along the access is about 9 K. The rock magnetometer is equipped with a special sensing-coil set of which the signal uniformity with respect to magnetic dipoles is about a factor of two better than that of conventional vertical-access systems. The intrinsic noise level of the system is 10-11Am2/ \\sqrt {Hz} .
  • Keywords
    Geomagnetism; Magnetometers, superconducting; Cryogenics; Helium; Magnetic field measurement; Noise level; Refrigeration; Reservoirs; SQUID magnetometers; Superconducting magnets; Temperature sensors; Thermal conductivity;
  • fLanguage
    English
  • Journal_Title
    Magnetics, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9464
  • Type

    jour

  • DOI
    10.1109/TMAG.1987.1064928
  • Filename
    1064928
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1023200