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  • Yagoubov, P.European Southern Observatory (ESO) (author)

Wideband 67-116 GHz receiver development for ALMA Band 2

  • Article/chapterEnglish2020

Publisher, publication year, extent ...

  • 2020-02-04
  • EDP Sciences,2020
  • electronicrdacarrier

Numbers

  • LIBRIS-ID:oai:research.chalmers.se:ee47c777-f62d-4782-9aa0-6823b1b1807f
  • https://research.chalmers.se/publication/518355URI
  • https://research.chalmers.se/publication/515574URI
  • https://doi.org/10.1051/0004-6361/201936777DOI

Supplementary language notes

  • Language:English
  • Summary in:English

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  • Subject category:art swepub-publicationtype
  • Subject category:ref swepub-contenttype

Notes

  • Context. The Atacama Large Millimeter/submillimeter Array (ALMA) has been in operation since 2011, but it has not yet been populated with the full suite of its planned frequency bands. In particular, ALMA Band 2 (67-90 GHz) is the final band in the original ALMA band definition to be approved for production. Aims. We aim to produce a wideband, tuneable, sideband-separating receiver with 28 GHz of instantaneous bandwidth per polarisation operating in the sky frequency range of 67-116 GHz. Our design anticipates new ALMA requirements following the recommendations of the 2030 ALMA Development Roadmap. Methods. The cryogenic cartridge is designed to be compatible with the ALMA Band 2 cartridge slot, where the coldest components - the feedhorns, orthomode transducers, and cryogenic low noise amplifiers - operate at a temperature of 15 K. We use multiple simulation methods and tools to optimise our designs for both the passive optics and the active components. The cryogenic cartridge is interfaced with a room-temperature (warm) cartridge hosting the local oscillator and the downconverter module. This warm cartridge is largely based on GaAs semiconductor technology and is optimised to match the cryogenic receiver bandwidth with the required instantaneous local oscillator frequency tuning range. Results. Our collaboration has resulted in the design, fabrication, and testing of multiple technical solutions for each of the receiver components, producing a state-of-the-art receiver covering the full ALMA Band 2 and 3 atmospheric window. The receiver is suitable for deployment on ALMA in the coming years and it is capable of dual-polarisation, sideband-separating observations in intermediate frequency bands spanning 4-18 GHz for a total of 28 GHz on-sky bandwidth per polarisation channel. Conclusions. We conclude that the 67-116 GHz wideband implementation for ALMA Band 2 is now feasible and that this receiver provides a compelling instrumental upgrade for ALMA that will enhance observational capabilities and scientific reach.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Mroczkowski, T.European Southern Observatory (ESO) (author)
  • Belitsky, Victor,1955Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)belitsky (author)
  • Cuadrado-Calle, D.University of Manchester (author)
  • Cuttaia, F.Istituto nazionale di astrofisica (INAF) (author)
  • Fuller, G. A.University of Manchester (author)
  • Gallego, J. -D.Observatorio de Yebes (IGN),Yebes Observatory (author)
  • Gonzalez, A.National Astronomical Observatory of Japan (author)
  • Kaneko, K.National Astronomical Observatory of Japan (author)
  • Mena, P.Universidad de Chile (UCH),University of Chile (UCH) (author)
  • Molina, R.Universidad de Chile (UCH),University of Chile (UCH) (author)
  • Nesti, R.Istituto nazionale di astrofisica (INAF) (author)
  • Tapia, V.Universidad de Chile (UCH),University of Chile (UCH) (author)
  • Villa, F.Istituto nazionale di astrofisica (INAF) (author)
  • Beltran, M.Istituto nazionale di astrofisica (INAF) (author)
  • Cavaliere, F.Universita' degli Studi di Milano,University of Milan (author)
  • Ceru, J.RPG Radiometer Physics GmbH (author)
  • Chesmore, G. E.University of Michigan (author)
  • Coughlin, K.University of Michigan (author)
  • De Breuck, C.European Southern Observatory (ESO) (author)
  • Fredrixon, Mathias,1972Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)mathiasf (author)
  • George, D.University of Manchester (author)
  • Gibson, H.RPG Radiometer Physics GmbH (author)
  • Golec, J.University of Michigan (author)
  • Josaitis, A.University of Michigan (author)
  • Kemper, F.Academia Sinica Taiwan,European Southern Observatory (ESO) (author)
  • Kotiranta, M.Universität Bern,University of Bern (author)
  • Lapkin, Igor,1963Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)lapkin (author)
  • Lopez-Fernandez, I.Observatorio de Yebes (IGN),Yebes Observatory (author)
  • Marconi, G.European Southern Observatory (ESO) (author)
  • Mariotti, S. (author)
  • McGenn, W.University of Manchester (author)
  • McMahon, J.University of Michigan (author)
  • Murk, A.Universität Bern,University of Bern (author)
  • Pezzotta, F.Universita' degli Studi di Milano,University of Milan (author)
  • Phillips, N.European Southern Observatory (ESO) (author)
  • Reyes, N.Universidad de Chile (UCH),University of Chile (UCH) (author)
  • Ricciardi, S.National Astronomical Observatory of Japan (author)
  • Sandri, M.National Astronomical Observatory of Japan (author)
  • Strandberg, Magnus,1975Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)masv (author)
  • Terenzi, L.Istituto nazionale di astrofisica (INAF) (author)
  • Testi, L.European Southern Observatory (ESO) (author)
  • Thomas, B.RPG Radiometer Physics GmbH (author)
  • Uzawa, Y.National Astronomical Observatory of Japan (author)
  • Vigano, D.Universita' degli Studi di Milano,University of Milan (author)
  • Wadefalk, N. (author)
  • European Southern Observatory (ESO)Chalmers tekniska högskola (creator_code:org_t)

Related titles

  • In:Astronomy and Astrophysics: EDP Sciences6340004-63611432-0746

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