The Micro-G module uses a multi-filter vibration attenuation system to reduce relative motion on the sample plate to less than 1 micro-g/rtHz.
The Micro-G is a Cryogenic Vibration Attenuation System designed based on the LIGO/KAGRA Seismic Attenuation System (SAS) of gravitational wave detectors. The system can be incorporated into a cryostat which includes:
The Micro-G vibration attenuation module may be applied equally well to room temperature systems. It attenuates mechanical noise by a factor of 1,000-10,000 for important frequencies over 5 Hz.
The graph above shows the system transmissibility of a single filter versus frequency. Attenuations are greater than 1000:1 for frequencies over 5 Hz. When multiple filters are used, their performance is superimposed.
Entire assembly without outer vacuum shield. Entire stack is about 2 meters high
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