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.

Techniques: spectroscopic

Instrumentation: detectors

Author

Victor Belitsky

Chalmers, Space, Earth and Environment, Onsala Space Observatory, GARD Technology

Igor Lapkin

Chalmers, Space, Earth and Environment, Onsala Space Observatory, GARD Technology

Mathias Fredrixon

Chalmers, Space, Earth and Environment, Onsala Space Observatory, GARD Technology

Denis Meledin

Chalmers, Space, Earth and Environment, Onsala Space Observatory, GARD Technology

Erik Sundin

Chalmers, Space, Earth and Environment, Onsala Space Observatory, GARD Technology

Bhushan Billade

Chalmers, Space, Earth and Environment, Onsala Space Observatory, Electronics Laboratory

Sven-Erik Ferm

Chalmers, Space, Earth and Environment, Onsala Space Observatory, GARD Technology

Alexey Pavolotskiy

Chalmers, Space, Earth and Environment, Onsala Space Observatory, GARD Technology

Hawal Marouf Rashid

Chalmers, Space, Earth and Environment, Advanced Receiver Development

Magnus Strandberg

Chalmers, Space, Earth and Environment, Onsala Space Observatory, GARD Technology

Vincent Desmaris

Chalmers, Space, Earth and Environment, Onsala Space Observatory, GARD Technology

Andrey Ermakov

Chalmers, Space, Earth and Environment, Onsala Space Observatory, GARD Technology

Sascha Krause

Chalmers, Space, Earth and Environment, Onsala Space Observatory, GARD Technology

Michael Olberg

Chalmers, Space, Earth and Environment, Onsala Space Observatory

Parisa Yadranjee Aghdam

Chalmers, Space, Earth and Environment, Onsala Space Observatory, GARD Technology

Sareh Shafiee

Chalmers, Space, Earth and Environment, Onsala Space Observatory, GARD Technology

Per Bergman

Chalmers, Space, Earth and Environment, Onsala Space Observatory

Elvire De Beck

Chalmers, Space, Earth and Environment, Astronomy and Plasmaphysics, Galactic Astrophysics

Hans Olofsson

Chalmers, Space, Earth and Environment, Astronomy and Plasmaphysics, Galactic Astrophysics

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 A23

Subject Categories

Telecommunications

Communication Systems

Signal Processing

DOI

10.1051/0004-6361/201731458

More information

Latest update

5/31/2018