SQUID-based rock magnetometer with open-ended horizontal roomtemperature access

Brake ter, H.J.M. and Court de la, P. and Lenferink, A.T.M. and Ulfman, J.A. and Flokstra, J. (1987) SQUID-based rock magnetometer with open-ended horizontal roomtemperature access. IEEE Transactions on Magnetics, 1987 (23). pp. 1110-1113. ISSN 0018-9464

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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 ${Hz}$ .
Item Type:	Article
Copyright:	© 1987 IEEE
Faculty:	Science and Technology (TNW)
Research Group:	Energy, Materials and Systems (EMS)
Link to this item:	http://purl.utwente.nl/publications/24327
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