Cryogenic geometric anti-spring vibration isolation system

Measurement Science and Technology, vol. 37, pp. 135001

Abstract

Abstract The combination of low temperature and low vibration levels is key for ultrasensitive sensing applications such as scanning probe microscopy, large-mass quantum mechanics, and gravitational wave detection. Unfortunately, closed-cycle cryostats using pulse tube or GM coolers introduce strong low-frequency vibrations starting at 1 Hz. Mass-spring systems allow passive isolation, but for low-frequency applications the required spring constants and masses become impractical. Blade-based geometric anti-spring (GAS) systems are compact isolators that operate from sub-Hz frequencies, but have not been demonstrated at cryogenic temperatures. Here, we characterize a GAS system tuned to operate at cryogenic temperatures. Our cryogenic filter uses radially arranged titanium blade springs whose effective spring constant can be tuned in-situ using a magnetic actuator. Our system achieves a vertical resonance frequency of 185 mHz at 7 K, which allows reduction of vibrations at the problematic 1 Hz cooler frequency by 8 dB.

Authors 10

1. Louw Feenstra corresponding Aachen

   Leiden University · Ludwig-Maximilians-Universität München

   Affiliation as printed

   Fakultät für Physik, Ludwig-Maximilians-Universität

   Leiden Institute of Physics, Leiden University

2. Sebastian Domínguez-Calderón corresponding

   Ludwig-Maximilians-Universität München

   Affiliation as printed

   Fakultät für Physik, Ludwig-Maximilians-Universität

3. Cornelis Van Oosten corresponding Aachen

   Leiden University

   Affiliation as printed

   Leiden Institute of Physics, Leiden University

4. Hugo Bohemen corresponding Aachen

   Leiden University

   Affiliation as printed

   Leiden Institute of Physics, Leiden University

5. Tjerk Benschop corresponding Aachen

   Leiden University

   Affiliation as printed

   Leiden Institute of Physics, Leiden University

6. Mats Brinkman corresponding Aachen

   Leiden University

   Affiliation as printed

   Leiden Institute of Physics, Leiden University

7. Eric Hennes corresponding

   National Institute for Subatomic Physics

   Affiliation as printed

   National Institute for Subatomic Physics

8. Robin Cornelissen corresponding

   National Institute for Subatomic Physics

   Affiliation as printed

   National Institute for Subatomic Physics

9. Alessandro Bertolini corresponding

   National Institute for Subatomic Physics

   Affiliation as printed

   National Institute for Subatomic Physics

10. Milan Allan corresponding Aachen

    Leiden University · Ludwig-Maximilians-Universität München

    Affiliation as printed

    Fakultät für Physik, Ludwig-Maximilians-Universität

    Leiden Institute of Physics, Leiden University