A history of the CSIRO’s development of high temperature superconducting rf SQUIDs for TEM prospecting.

Catherine P. Foley; Keith E. Leslie; Rex A. Binks

doi:10.1071/ASEG2006ab094

ISSN: 2202-0586
E-ISSN:

oa A history of the CSIRO’s development of high temperature superconducting rf SQUIDs for TEM prospecting.
Authors Catherine P. Foley^a, Keith E. Leslie^b and Rex A. Binks^c
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^a CSIRO Industrial Physics, , P.O. Box 218, Lindfield, , NSW, 2070, Australia, [email protected] ^b CSIRO Industrial Physics, , P.O. Box 218, Lindfield, , NSW, 2070, Australia, [email protected] ^c CSIRO Industrial Physics, , P.O. Box 218, Lindfield, , NSW, 2070, Australia, [email protected]
Publisher: Australian Society of Exploration Geophysicists
Source: ASEG Extended Abstracts, Volume 2006, Issue ASEG2006 - 18th Geophysical Conference, Dec 2006, p. 1 - 5
DOI: https://doi.org/10.1071/ASEG2006ab094
- Published online: 01 Dec 2006

Abstract

Over the past 14 years, CSIRO Industrial Physics has developed High Temperature Superconducting (HTS) SQUID (Superconducting Quantum Interference Device) sensor systems for TEM prospecting. Initially this work was done in collaboration with BHP P/L, now BHP Billiton, and some early successes were achieved. Collaboration with BHP ceased in 1998 after completion of a series of airborne trials. Interest in the rf SQUID sensor was revived in 2000, when it was successfully used to delineate targets at Falconbridge Ltd.’s Raglan, Quebec, mine site. As a result, CSIRO entered into a contract to build a ruggedised version of the SQUID sensor system for Falconbridge’s use under a rental agreement. Since September 2001, a number of CSIRO SQUID systems have been built and deployed over three continents. A local Australian firm, Outer-Rim Developments, has been licensed by CSIRO to manufacture the rf SQUID systems now called LANDTEM™. Technology transfer from CSIRO to Outer-Rim Developments was facilitated by Outer-Rim having a sub-contractor work within CSIRO for a number of months.

In this paper, the results from some of the seminal SQUID surveys are presented and discussed. Finally a direct comparison between the noise performance of CSIRO’s HTS SQUID sensors and a Bartington flux-gate sensor is presented.

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References

Braginski A., 2003, ISEC 2003 Reflections on the conference, Supercond. Sci. Technol., 16, 1315-1319.
Collins S., 2001, Tritton Copper Deposit, Girilambone NSW. A Geophysical Discovery, Exploration Geophysics, 32, 147-151.
Foley C.P., Leslie K.E., Binks R., Lewis C., Murray W., Sloggett G.J., Lam S., Sankrityan B., Savvides N., Katzaros A., Muller K.-H., Mitchell E.E., Pollock J., Lee J., Dart D.L., Asten M., Maddever A., Panjkovic G., Downey M., Hoffman C., and Turner R., 1999, Field trials using HTS SQUID magnetometers for ground-based and airborne geophysical applications, IEEE Transactions on Applied Superconductivity, 9, 3786-3792.
Lee J.B., Turner R.J., Downey M.A., Maddever A., Dart D.L., Foley C.P., Binks R., Lewis C., Murray W., Panjkovic G., and Asten M., 2001, Experience with SQUID magnetometers in airborne TEM surveying, 32, 009-013.
Lee J.B., Dart D.L., Turner R.J., Downey M.A., Maddever A., Panjkovic G., Foley C.P., Leslie K.E., Binks R., Lewis C., and Murray W., 2002, Airborne TEM Surveying with a SQUID Magnetometer Sensor, Geophysics, 67, 468-477.
Le Roux, 2005, The Development of Low Temperature SQUID Systems for Geosciences, SAGA Monthly talk, 1 July 2005, http://www.sagaonline.co.za/monthly_talks.htm
Leslie K.E., Binks R.A., Foley C.P., Thorn R.G., Roberts M.J., Du J., Mitchell E.E., Lam S.K.H., Lewis C.J., Millar C., and Osmond R.T., 2003, Operation of a Geophysical HTS SQUID System in Sub-Arctic Environments, IEEE Transactions on Applied Superconductivity, 13, 2, 759-762.
McCracken K.G., Oristaglio M.L., and Hohmann G.W., 1986, Minimisation of noise in electromagnetic exploration, Geophysics, 51, 810-8.
Osmond R.T., Watts A.H., Ravenhurst W.R., Foley C.P., and Leslie K. E., 2002, Finding nickel from the B-field at Raglan- “To B or not to B”, CSEG Recorder, 27, 9, 45-18.
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Spies B.R., Depth of investigation in electromagnetic sounding methods, Geophysics, 54, 872-888.

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Article Type: Research Article

Keyword(s): Geophysics; Nickel Sulphide; SQUIDs; TEM

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oa A history of the CSIRO’s development of high temperature superconducting rf SQUIDs for TEM prospecting.

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