A laser interferometer accelerometer for vibration sensitive cryogenic experiments

Abstract

Monitoring motion originating from ultra low-temperature cooling systems like cryocoolers is important for vibration sensitive cryogenic experiments like KAGRA. Since no commercial cryogenic accelerometers are available, we developed a compact self-calibrating accelerometer with a Michelson interferometer readout for cryogenic use. Change in calibration factor and drop in interferometer output originating from temperature drop were the main concerns which were tackled. Sensitivity of $3.38\times 10^{-11}$ m/$\sqrt{\mathrm{Hz}}$ at 1 Hz was achieved at 300 K. The accelerometer was tested inside the KAGRA cryostat; showed stable operation down to 12 K in 0.1-100 Hz band with only 1% visibility drop. Our accelerometer can be employed in low vibration cryogenic environment for a multitude of applications.

References in corpus (9)

• Advanced Virgo: a 2nd generation interferometric gravitational wave detector
• Advanced LIGO
• Construction of KAGRA: an Underground Gravitational Wave Observatory
• CUORE-0 detector: design, construction and operation
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Cited by in corpus (2)

• Vibration Analysis of KAGRA Cryostat at Cryogenic Temperature
• Estimation of Newtonian noise from KAGRA cooling system