William S. Goree, Inc. -  superconducting geophysical instruments lkeaton@wsgi.us WSGI Superconducting Geophysical Instruments
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MODEL 755 & 760-4K
SUPERCONDUCTING ROCK MAGNETOMETER

STANDARD FEATURES


PULSE TUBE CRYOCOOLER:
Competely liquid helium free, virtually noiseless

4k Superconducting Rock MagnetometerFAST COOL DOWN: From room temperature to operating in less than 36 hours

SAMPLE ACCESS: Vertical or horizontal orientation

STANDARD PASS THROUGH ACCESS: Diameterof 4.2 or 7.6cm

COMPACT: Outside diameter = 32cm, overall length = 82cm for 755 and 130cm for 760

DC SQUIDS: Magnetic dipole moment noise of less than 1x10-12Am2 (1x10-9EMU) RMS per root Hz

DYNAMIC RANGE:1x10-12 to 2x10-4Am2 analog in 4 ranges, 1x10-12 to 2x10-3Am2 digital flux

FIELD ATTENUATION: 106 for transverse fields, 1011 for axial fields

HEAT SWITCH ON SUPERCONDUCTING SHIELD