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Mo/Au x-ray microcalorimeters were fabricated as candidates for the high resolution spectrometers for the Constellation-X mission.

Localized high temperature superconducting quantum interference devices were used for reducing ambient magnetic fields. Results were quantified in terms of signal-to-noise ration for source fields and shielding factors for ambient noise. The approach has potential applications in the magnetocardiography and nondestructive testing of materials in a nondestructive environment.

The performance of high temperature image surface magnetometers is evaluated under the influence of electromagnetic shielding, background noise and biomagnetic current sources. The finite difference method is used to simulate the impact of these parameters on the operating characteristics of the magnetometers. Results suggest that the use of superconducting shields reduces the ambient noise field by about four orders of magnitude without disturbing the cardiomagnetic signals.