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Vibrations on pulse tube based Dry Dilution Refrigerators for low noise measurements

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arxiv 1703.08957 v2 pith:HCGBMBOT submitted 2017-03-27 physics.ins-det

E. Olivieri , J. Billard , M. De Jesus , A. Juillard , A. Leder This is my paper · ORCID
classification physics.ins-det
keywords dilutionpulserefrigeratorstubecommercialcostddrsdifferent
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Dry Dilution Refrigerators (DDR) based on pulse tube cryo-coolers have started to replace Wet Dilution Refrigerators (WDR) due to the ease and low cost of operation. However these advantages come at the cost of increased vibrations, induced by the pulse tube. In this work, we present the vibration measurements performed on three different commercial DDRs. We describe in detail the vibration measurement system we assembled, based on commercial accelerometers, conditioner and DAQ, and examined the effects of the various damping solutions utilized on three different DDRs, both in the low and high frequency regions. Finally, we ran low temperature, pseudo-massive (30 and 250 g) germanium bolometers in the best vibration-performing system under study and report on the results.

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  1. Vibrational sensing at mK temperatures in dry dilution refrigerators using commercial accelerometers for diverse fundamental physics applications

    physics.ins-det 2026-01 conditional novelty 5.0 of 10

    Commercial Endevco 2271A accelerometers operated at 8 mK on a dilution-refrigerator mixing-chamber plate and resolved pulse-tube harmonics, with a radioassay bounding their 40K/232Th contamination.

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