Method for enlarging dynamic range of superconducting SQUID system for measuring magnetic flows and magnetic fields

摘要

The method is carried out so that when the output signal of a conventional SQUID read out electronic unit (flow regulating loop) approaches a specifiable voltage, the value of a counter is increased or reduced by one, so that a direct current is increased or decreased in steps by an additional compensation coil at the place of the SQUID by a specifiable value. The output voltage of the conventional unit is reset at about zero. The method is carried out so that when the output signal of a conventional SQUID read out electronic unit (flow regulating loop) approaches a specifiable voltage, the value of a counter is increased or reduced by one, so that a direct current is increased or decreased in steps by an additional compensation coil at the place of the SQUID by a specifiable value. The output voltage of the SQUID conventional read out electronic unit is reset at about zero, so that this also stays in tuned in condition for large magnetic field alterations.