VIBRATION FREE 4.5 K SORPTION COOLER | Zendy

Johannes Faas Burger | Zendy; H.J. Holland | Zendy; R.J. de Meijer | Zendy; A. Sirbi | Zendy; H.J.M. ter Brake | Zendy; J. G. Weisend | Zendy; John Barclay | Zendy; Susan Breon | Zendy; Jonathan Demko | Zendy; Michael DiPirro | Zendy; J. Patrick Kelley | Zendy; Peter Kittel | Zendy; Arkadiy Klebaner | Zendy; Al Zeller | Zendy; Mark Zagarola | Zendy; Steven Van Sciver | Zendy; Andrew Rowe | Zendy; John Pfotenhauer | Zendy; Tom Peterson | Zendy; Jennifer Lock | Zendy

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VIBRATION FREE 4.5 K SORPTION COOLER

Author(s) -

Johannes Faas Burger,

H.J. Holland,

R.J. de Meijer,

A. Sirbi,

H.J.M. ter Brake,

J. G. Weisend,

John Barclay,

Susan Breon,

Jonathan Demko,

Michael DiPirro,

J. Patrick Kelley,

Peter Kittel,

Arkadiy Klebaner,

Al Zeller,

Mark Zagarola,

Steven Van Sciver,

Andrew Rowe,

John Pfotenhauer,

Tom Peterson,

Jennifer Lock

Publication year - 2008

Publication title -

aip conference proceedings

Language(s) - English

Resource type - Conference proceedings

SCImago Journal Rank - 0.177

H-Index - 75

eISSN - 1551-7616

pISSN - 0094-243X

DOI - 10.1063/1.2908529

Subject(s) - breadboard , vibration , materials science , helium , cryocooler , aerospace engineering , interferometry , nuclear engineering , mechanical engineering , physics , optics , acoustics , engineering , electrical engineering , atomic physics

At the University of Twente, a breadboard 4.5 K sorption cooler was developed under ESA contract. It has no moving parts and, therefore, is essentially vibration-free. Moreover, it has the potential of a very long life. This cooler is a favorite option for missions such as ESA's Darwin mission, which is a future space interferometer consisting of a few free flying telescopes and a central beam combiner. Because of the optics involved, hardly any vibration can be tolerated. The cooler consists of a hydrogen stage cooling from 80 K to 14.5 K and a helium stage establishing 10 mW at 4.5 K. Both stages use micro-porous activated carbon as the adsorption material. The two cooler stages need 8 W of input power and are heat sunk at two passive radiators at temperatures of about 50 and 80 K. We developed and built a demonstrator of the helium stage. In the paper, the design, realization and tests of this demonstrator cooler are reviewed.

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