SEPIA - A new single pixel receiver at the APEX telescope
Journal article, 2018
Context. We describe the new Swedish-ESO PI Instrument for APEX (SEPIA) receiver, which was designed and built by the Group for Advanced Receiver Development (GARD), at Onsala Space Observatory (OSO) in collaboration with ESO. It was installed and commissioned at the APEX telescope during 2015 with an ALMA Band 5 receiver channel and updated with a new frequency channel (ALMA Band 9) in February 2016. Aim. This manuscript aims to provide, for observers who use the SEPIA receiver, a reference in terms of the hardware description, optics and performance as well as the commissioning results. Methods. Out of three available receiver cartridge positions in SEPIA, the two current frequency channels, corresponding to ALMA Band 5, the RF band 158-211 GHz, and Band 9, the RF band 600-722 GHz, provide state-of-the-art dual polarization receivers. The Band 5 frequency channel uses 2SB SIS mixers with an average SSB noise temperature around 45 K with IF (intermediate frequency) band 4-8 GHz for each sideband providing total 4 × 4 GHz IF band. The Band 9 frequency channel uses DSB SIS mixers with a noise temperature of 75-125 K with IF band 4-12 GHz for each polarization. Results. Both current SEPIA receiver channels are available to all APEX observers.
Instrumentation: detectors
Techniques: spectroscopic
Author
Victor Belitsky
Chalmers, Space, Earth and Environment, Onsala Space Observatory
Igor Lapkin
Chalmers, Space, Earth and Environment, Onsala Space Observatory
Mathias Fredrixon
Chalmers, Space, Earth and Environment, Onsala Space Observatory
Denis Meledin
Chalmers, Space, Earth and Environment, Onsala Space Observatory
Erik Sundin
Chalmers, Space, Earth and Environment, Onsala Space Observatory
Bhushan Billade
Chalmers, Space, Earth and Environment, Onsala Space Observatory
Sven-Erik Ferm
Chalmers, Space, Earth and Environment, Onsala Space Observatory
Alexey Pavolotskiy
Chalmers, Space, Earth and Environment, Onsala Space Observatory
Hawal Marouf Rashid
Chalmers, Space, Earth and Environment, Advanced Receiver Development
Magnus Strandberg
Chalmers, Space, Earth and Environment, Onsala Space Observatory
Vincent Desmaris
Chalmers, Space, Earth and Environment, Onsala Space Observatory
Andrey Ermakov
Chalmers, Space, Earth and Environment, Onsala Space Observatory
Sascha Krause
Chalmers, Space, Earth and Environment, Onsala Space Observatory
Michael Olberg
Chalmers, Space, Earth and Environment, Onsala Space Observatory
Parisa Yadranjee Aghdam
Chalmers, Space, Earth and Environment, Onsala Space Observatory
Sareh Shafiee
Chalmers, Space, Earth and Environment, Onsala Space Observatory
Per Bergman
Chalmers, Space, Earth and Environment, Onsala Space Observatory
Elvire De Beck
Chalmers, Space, Earth and Environment, Astronomy and Plasmaphysics
Hans Olofsson
Chalmers, Space, Earth and Environment, Astronomy and Plasmaphysics
John Conway
Chalmers, Space, Earth and Environment, Onsala Space Observatory
C. De Breuck
European Southern Observatory (ESO)
K. Immer
European Southern Observatory (ESO)
P. Yagoubov
European Southern Observatory (ESO)
F.M. Montenegro-Montes
European Southern Observatory Santiago
Karl Torstensson
European Southern Observatory Santiago
J. P. Perez-Beaupuits
European Southern Observatory Santiago
T. Klein
European Southern Observatory Santiago
W. Boland
University of Groningen
A. M. Baryshev
University of Groningen
R. Hesper
University of Groningen
J. Barkhof
University of Groningen
J. Adema
University of Groningen
M. E. Bekema
University of Groningen
A. Koops
University of Groningen
Astronomy and Astrophysics
0004-6361 (ISSN) 1432-0746 (eISSN)
Vol. 612 A23Subject Categories
Accelerator Physics and Instrumentation
DOI
10.1051/0004-6361/201731458