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Régulation des perturbations dynamiques produites par un cryogénérateur à tube à pulsation dans un instrument sensible aux vibrations.

Control of dynamic disturbances produced by a pulse tube refrigerator in a vibration-sensitive instrumentation.

Auteurs : RIABZEV S., VEPRIK A., VILENCHIK H., et al.

Type d'article : Article

Résumé

The increase in use of "dry-cooling" technology, which is slowly replacing the LN2 cooling in vibration sensitive instrumentation, such as scanning electronic microscopes and superconductive quantum interference devices, motivates the further quieting of the attached cryogenic refrigerators. A pulse tube refrigerator produces some relatively low vibration due to the oscillating gas pressure. However small, this may be excessive for the above mentioned vibration-sensitive instrumentation. Therefore, a customized vibration attenuation interface is proposed, which can effectively control this detrimental vibration. The authors propose a thermally conductive, passive vibration isolator for mounting a vibration-sensitive payload on the cold tip of a refrigerator. An optimal design is reached by incorporating an analytical model and appropriate experimentation. The authors demonstrate the capabilities of a first prototype vibration isolator in attenuating a pulse tube's vibration down to the background level. [Reprinted with permission from Elsevier. Copyright, 2008].

Détails

  • Titre original : Control of dynamic disturbances produced by a pulse tube refrigerator in a vibration-sensitive instrumentation.
  • Identifiant de la fiche : 2009-0495
  • Langues : Anglais
  • Source : Cryogenics - vol. 49 - n. 1
  • Date d'édition : 01/2009

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