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 10-11 Am2/√Hz.
Original language | English |
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Pages (from-to) | 1110-1113 |
Number of pages | 4 |
Journal | IEEE transactions on magnetics |
Volume | 23 |
Issue number | 2 |
DOIs | |
Publication status | Published - 1 Jan 1987 |