Sorption-based vibration-free cooler for the METIS instrument on E-ELT

Hermanus J.M. ter Brake, Roger Wu, D.R. Zalewski, Cristian Hendrik Vermeer, Herman J. Holland, J. Doornink, B. Benthem, E. Boom

  • 4 Citations

Abstract

METIS is the 'Mid-infrared ELT Imager and Spectrograph' for the European Extremely Large Telescope. This E-ELT instrument will cover the thermal/mid-infrared wavelength range from 3 to 14 μm and will require cryogenic cooling of detectors and optics. We present a vibration-free cooling technology for this instrument based on sorption coolers developed at the University of Twente in collaboration with Dutch Space. In the baseline design, the instrument has four temperature levels: N-band: detector at 8 K and optics at 25 K; L/M-band: detector at 40K and optics at 77 K. The latter temperature is established by a liquid nitrogen supply with adequate cooling power. The cooling powers required at the lower three levels are 0.4 W, 1.1 W, and 1.4 W, respectively. The cryogenic cooling technology that we propose uses a compressor based on the cyclic adsorption and desorption of a working gas on a sorber material such as activated carbon. Under desorption, a high pressure can be established. When expanding the high-pressure fluid over a flow restriction, cooling is obtained. The big advantage of this cooling technology is that, apart from passive valves, it contains no moving parts and, therefore, generates no vibrations. This, obviously, is highly attractive in sensitive, high-performance optical systems. A further advantage is the high temperature stability down to the mK level. In a Dutch national research program we aim to develop a cooler demonstrator for METIS. In the paper we will describe our cooler technology and discuss the developments towards the METIS cooler demonstrator
Original languageUndefined
Title of host publicationProc. SPIE 8446, Ground-based and Airborne Instrumentation for Astronomy IV
EditorsI.S. McLean, S.K. Ramsay, H. Takam
Place of PublicationAmsterdam
PublisherSPIE Digital Library
Pages1-11
ISBN (Print)9780819491473
DOIs
StatePublished - 1 Jul 2012

Publication series

NameSPIE proceedings
PublisherSPIE Digital Library
Volume8446
ISSN (Print)0277-786X

Fingerprint

Cooling
Optics
Detectors
Temperature
Cryogenics
Desorption
Infrared radiation
Spectrographs
Liquid nitrogen
Image sensors
Telescopes
Optical systems
Activated carbon
Compressors
Sorption
Adsorption
Wavelength
Fluids
Gases

Keywords

  • METIS-289400
  • IR-82269

Cite this

ter Brake, H. J. M., Wu, R., Zalewski, D. R., Vermeer, C. H., Holland, H. J., Doornink, J., ... Boom, E. (2012). Sorption-based vibration-free cooler for the METIS instrument on E-ELT. In I. S. McLean, S. K. Ramsay, & H. Takam (Eds.), Proc. SPIE 8446, Ground-based and Airborne Instrumentation for Astronomy IV (pp. 1-11). (SPIE proceedings; Vol. 8446). Amsterdam: SPIE Digital Library. DOI: 10.1117/12.927002

ter Brake, Hermanus J.M.; Wu, Roger; Zalewski, D.R.; Vermeer, Cristian Hendrik; Holland, Herman J.; Doornink, J.; Benthem, B.; Boom, E. / Sorption-based vibration-free cooler for the METIS instrument on E-ELT.

Proc. SPIE 8446, Ground-based and Airborne Instrumentation for Astronomy IV. ed. / I.S. McLean; S.K. Ramsay; H. Takam. Amsterdam : SPIE Digital Library, 2012. p. 1-11 (SPIE proceedings; Vol. 8446).

Research output: Scientific - peer-reviewConference contribution

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abstract = "METIS is the 'Mid-infrared ELT Imager and Spectrograph' for the European Extremely Large Telescope. This E-ELT instrument will cover the thermal/mid-infrared wavelength range from 3 to 14 μm and will require cryogenic cooling of detectors and optics. We present a vibration-free cooling technology for this instrument based on sorption coolers developed at the University of Twente in collaboration with Dutch Space. In the baseline design, the instrument has four temperature levels: N-band: detector at 8 K and optics at 25 K; L/M-band: detector at 40K and optics at 77 K. The latter temperature is established by a liquid nitrogen supply with adequate cooling power. The cooling powers required at the lower three levels are 0.4 W, 1.1 W, and 1.4 W, respectively. The cryogenic cooling technology that we propose uses a compressor based on the cyclic adsorption and desorption of a working gas on a sorber material such as activated carbon. Under desorption, a high pressure can be established. When expanding the high-pressure fluid over a flow restriction, cooling is obtained. The big advantage of this cooling technology is that, apart from passive valves, it contains no moving parts and, therefore, generates no vibrations. This, obviously, is highly attractive in sensitive, high-performance optical systems. A further advantage is the high temperature stability down to the mK level. In a Dutch national research program we aim to develop a cooler demonstrator for METIS. In the paper we will describe our cooler technology and discuss the developments towards the METIS cooler demonstrator",
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ter Brake, HJM, Wu, R, Zalewski, DR, Vermeer, CH, Holland, HJ, Doornink, J, Benthem, B & Boom, E 2012, Sorption-based vibration-free cooler for the METIS instrument on E-ELT. in IS McLean, SK Ramsay & H Takam (eds), Proc. SPIE 8446, Ground-based and Airborne Instrumentation for Astronomy IV. SPIE proceedings, vol. 8446, SPIE Digital Library, Amsterdam, pp. 1-11. DOI: 10.1117/12.927002

Sorption-based vibration-free cooler for the METIS instrument on E-ELT. / ter Brake, Hermanus J.M.; Wu, Roger; Zalewski, D.R.; Vermeer, Cristian Hendrik; Holland, Herman J.; Doornink, J.; Benthem, B.; Boom, E.

Proc. SPIE 8446, Ground-based and Airborne Instrumentation for Astronomy IV. ed. / I.S. McLean; S.K. Ramsay; H. Takam. Amsterdam : SPIE Digital Library, 2012. p. 1-11 (SPIE proceedings; Vol. 8446).

Research output: Scientific - peer-reviewConference contribution

TY - CHAP

T1 - Sorption-based vibration-free cooler for the METIS instrument on E-ELT

AU - ter Brake,Hermanus J.M.

AU - Wu,Roger

AU - Zalewski,D.R.

AU - Vermeer,Cristian Hendrik

AU - Holland,Herman J.

AU - Doornink,J.

AU - Benthem,B.

AU - Boom,E.

PY - 2012/7/1

Y1 - 2012/7/1

N2 - METIS is the 'Mid-infrared ELT Imager and Spectrograph' for the European Extremely Large Telescope. This E-ELT instrument will cover the thermal/mid-infrared wavelength range from 3 to 14 μm and will require cryogenic cooling of detectors and optics. We present a vibration-free cooling technology for this instrument based on sorption coolers developed at the University of Twente in collaboration with Dutch Space. In the baseline design, the instrument has four temperature levels: N-band: detector at 8 K and optics at 25 K; L/M-band: detector at 40K and optics at 77 K. The latter temperature is established by a liquid nitrogen supply with adequate cooling power. The cooling powers required at the lower three levels are 0.4 W, 1.1 W, and 1.4 W, respectively. The cryogenic cooling technology that we propose uses a compressor based on the cyclic adsorption and desorption of a working gas on a sorber material such as activated carbon. Under desorption, a high pressure can be established. When expanding the high-pressure fluid over a flow restriction, cooling is obtained. The big advantage of this cooling technology is that, apart from passive valves, it contains no moving parts and, therefore, generates no vibrations. This, obviously, is highly attractive in sensitive, high-performance optical systems. A further advantage is the high temperature stability down to the mK level. In a Dutch national research program we aim to develop a cooler demonstrator for METIS. In the paper we will describe our cooler technology and discuss the developments towards the METIS cooler demonstrator

AB - METIS is the 'Mid-infrared ELT Imager and Spectrograph' for the European Extremely Large Telescope. This E-ELT instrument will cover the thermal/mid-infrared wavelength range from 3 to 14 μm and will require cryogenic cooling of detectors and optics. We present a vibration-free cooling technology for this instrument based on sorption coolers developed at the University of Twente in collaboration with Dutch Space. In the baseline design, the instrument has four temperature levels: N-band: detector at 8 K and optics at 25 K; L/M-band: detector at 40K and optics at 77 K. The latter temperature is established by a liquid nitrogen supply with adequate cooling power. The cooling powers required at the lower three levels are 0.4 W, 1.1 W, and 1.4 W, respectively. The cryogenic cooling technology that we propose uses a compressor based on the cyclic adsorption and desorption of a working gas on a sorber material such as activated carbon. Under desorption, a high pressure can be established. When expanding the high-pressure fluid over a flow restriction, cooling is obtained. The big advantage of this cooling technology is that, apart from passive valves, it contains no moving parts and, therefore, generates no vibrations. This, obviously, is highly attractive in sensitive, high-performance optical systems. A further advantage is the high temperature stability down to the mK level. In a Dutch national research program we aim to develop a cooler demonstrator for METIS. In the paper we will describe our cooler technology and discuss the developments towards the METIS cooler demonstrator

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KW - IR-82269

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DO - 10.1117/12.927002

M3 - Conference contribution

SN - 9780819491473

T3 - SPIE proceedings

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BT - Proc. SPIE 8446, Ground-based and Airborne Instrumentation for Astronomy IV

PB - SPIE Digital Library

ER -

ter Brake HJM, Wu R, Zalewski DR, Vermeer CH, Holland HJ, Doornink J et al. Sorption-based vibration-free cooler for the METIS instrument on E-ELT. In McLean IS, Ramsay SK, Takam H, editors, Proc. SPIE 8446, Ground-based and Airborne Instrumentation for Astronomy IV. Amsterdam: SPIE Digital Library. 2012. p. 1-11. (SPIE proceedings). Available from, DOI: 10.1117/12.927002