The susceptibility of incoherent detector systems to cryocooler microphonics
| Autor: | Matthew Joseph Griffin, Peter A. R. Ade, Andrew E. Lange, I. D. Hepburn, Viktor Hristov, R. S. Bhatia, Peter Mason, Tom Bradshaw, J. J. Bock, B. P. Crill, A. H. Orlowska, Alain Benoit, A. D. Turner, A. G. Murray |
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| Rok vydání: | 1999 |
| Předmět: |
Physics
Physics::Instrumentation and Detectors business.industry Cosmic microwave background Bolometer Astrophysics::Instrumentation and Methods for Astrophysics General Physics and Astronomy Astrophysics::Cosmology and Extragalactic Astrophysics Cryogenics Astrophysics Cryocooler Particle detector law.invention symbols.namesake Optics law Physics::Space Physics Microphonics symbols General Materials Science Zero gravity Planck business Astrophysics::Galaxy Astrophysics |
| Zdroj: | Cryogenics. 39:701-715 |
| ISSN: | 0011-2275 |
| Popis: | Mechanical cryocoolers will be used to provide 4 K cooling for the HFI bolometer instrument in the Planck Surveyor mission for measurement of the anisotropies in the cosmic microwave background. They may also find application in future Earth-observing satellites. We describe an experimental programme to investigate the effects of microphonic vibrations on infrared detectors. Our initial tests have demonstrated the feasibility of operating far-infrared photoconductive detectors in conjunction with a 4 K cryocooler for Earth observing applications. The microphonic susceptibility of a bolometer at 100 mK has also been investigated, using a modified variation of the Planck Surveyor zero gravity flight dilution system. The results of these tests gives us confidence in the proposed use of sensitive bolometers with mechanical cryocoolers for space missions. We also describe development of the bolometers, the readout systems and temperature regulators for improved systems level performance of such instruments. |
| Databáze: | OpenAIRE |
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