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Analysis, Simulation and Cryogenic/Mechanical Design for ALMA Band 5 Cartridge

Magnus Strandberg (Institutionen för rymd- och geovetenskap, Avancerad mottagarutveckling)
Göteborg : Chalmers University of Technology, 2011. - 108 s.
[Licentiatavhandling]

This licentiate thesis describes the work conducted by the author during the development of the ALMA Band 5 cartridge. The ALMA project as an international collaboration between various continents consisting of 66 antennas in total with ten ALMA receivers that observes in the range from 31 GHz and 950 GHz. The ALMA Band 5 receiver cartridge is designed for a frequency range of 163-211 GHz. For achieving the lowest possible system noise temperature, internal key components in the ALMA Band 5 cartridge, such as mixers and amplifiers, should experience a low temperature in the cryogenic region. By optimizing thermal heat load at various temperature stages and create a rigid structure by using various properties of material’s behaviour in cryogenic temperature, the cartridge are shown to be fulfilling all specified specifications.

Nyckelord: ALMA frontend, receiver cartridge, cryogenics, mechanical stress, thermal contraction.



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Denna post skapades 2011-05-20. Senast ändrad 2014-09-02.
CPL Pubid: 140872

 

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Institutioner (Chalmers)

Institutionen för rymd- och geovetenskap, Avancerad mottagarutveckling (2010-2017)

Ämnesområden

Informations- och kommunikationsteknik
Hållbar utveckling
Innovation och entreprenörskap (nyttiggörande)
Rymd- och flygteknik
Övrig teknisk fysik

Chalmers infrastruktur

Relaterade publikationer

Inkluderade delarbeten:


Analysis, Simulation and Design of Cryogenic Systems for ALMA Band 5 Prototype Cartridge


Examination

Datum: 2011-06-09
Tid: 10:00
Lokal: Fasrummet (A820), Kemivägen 9, Chalmers University of Technology
Opponent: Docent Michael Olberg, Onsala Space Observatory