Vibration analysis of cryocoolers
Jan, 2004
15 pages
Published in:
- Cryogenics 44 (2004) 309-317
Report number:
- KEK-PREPRINT-2003-117
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Abstract: (Elsevier)
The vibrations of Gifford-McMahon (GM) and pulse-tube (PT) cryocoolers were measured and analyzed. The vibrations of the cold-stage and cold-head were measured separately to investigate their vibration mechanisms. The measurements were performed while maintaining the thermal conditions of the cryocoolers at a steady state. We found that the vibration of the cold-head for the 4 K PT cryocooler was two orders of magnitude smaller than that of the 4 K GM cryocooler. On the other hand, the vibration of the cold-stages for both cryocoolers was of the same order of magnitude. From a spectral analysis of the vibrations and a simulation, we concluded that the vibration of the cold-stage is caused by an elastic deformation of the pulse tubes (or cylinders) due to the pressure oscillation of the working gas.- Cryocooler
- Vibration
- Pulse-tube
- Gifford-McMahon
- gravitational radiation detector
- optics: interference
- optics: reflection
- mirror: fluctuation
- cryogenics
- oscillation
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