Accession Number : AD0737834

Title :   Cryogenic Gravity Meter.

Descriptive Note : Final rept. Apr 68-Jul 71,

Corporate Author : STANISLAUS STATE COLL TURLOCK CALIF

Personal Author(s) : Tuman,Vladimir S. ; Waleh,Ahmad

Report Date : AUG 1971

Pagination or Media Count : 70

Abstract : The report describes a cryogenic gravity meter which has a theoretical sensitivity of about 25 millimicrogal. The instrument consists of two parts--a suspension unit and a detection module. There are nine other units of power supplies, amplifiers, and other circuits as accessories for the operation of the instrument. The suspension unit is a cylindrically symmetric superconducting magnet with a large magnetic field and a small magnetic field gradient at the center of the instrument. The detection module is a double Josephson's junction magnetometer, also known as SQUID, which detects the magnetic flux change due to the motion of the hollow sphere. (Author)

Descriptors :   (*GRAVITY, MEASURING INSTRUMENTS), MAGNETOMETERS, CRYOGENICS, SUPERCONDUCTORS, POWER SUPPLIES, TUNNELING(ELECTRONICS), EQUATIONS OF MOTION, CALIBRATION

Subject Categories : Geodesy
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE