SEPIA345: A 345 GHz dual polarization heterodyne receiver channel for SEPIA at the APEX telescope
Artikel i vetenskaplig tidskrift, 2022
Context. We describe the new SEPIA345 heterodyne receiver channel installed at the Atacama Pathfinder EXperiment (APEX) telescope, including details of its configuration, characteristics, and test results on sky. SEPIA345 is designed and built to be a part of the Swedish ESO PI Instrument for the APEX telescope (SEPIA). This new receiver channel is suitable for very high-resolution spectroscopy and covers the frequency range 272- 376 GHz. It utilizes a dual polarization sideband separating (2SB) receiver architecture, employing superconductor-isolator-superconductor mixers (SIS), and provides an intermediate frequency (IF) band of 4- 12 GHz for each sideband and polarization, thus covering a total instantaneous IF bandwidth of 4 ÃÂ - 8 = 32 GHz. Aims. This paper provides a description of the new receiver in terms of its hardware design, performance, and commissioning results. Methods. The methods of design, construction, and testing of the new receiver are presented. Results. The achieved receiver performance in terms of noise temperature, sideband rejection, stability, and other parameters are described. Conclusions. SEPIA345 is a commissioned APEX facility instrument with state-of-the-art wideband IF performance. It has been available on the APEX telescope for science observations since July 2021.
Submillimeter: general
Instrumentation: detectors
Techniques: spectroscopic
Författare
Denis Meledin
Chalmers, Rymd-, geo- och miljövetenskap, Onsala rymdobservatorium
Igor Lapkin
Chalmers, Rymd-, geo- och miljövetenskap, Onsala rymdobservatorium
Mathias Fredrixon
Chalmers, Rymd-, geo- och miljövetenskap, Onsala rymdobservatorium
Erik Sundin
Chalmers, Rymd-, geo- och miljövetenskap, Onsala rymdobservatorium
Sven-Erik Ferm
Chalmers, Rymd-, geo- och miljövetenskap, Onsala rymdobservatorium
Alexey Pavolotskiy
Chalmers, Rymd-, geo- och miljövetenskap, Onsala rymdobservatorium
Magnus Strandberg
Chalmers, Rymd-, geo- och miljövetenskap, Onsala rymdobservatorium
Vincent Desmaris
Chalmers, Rymd-, geo- och miljövetenskap, Onsala rymdobservatorium
Cristian D. López
Chalmers, Rymd-, geo- och miljövetenskap, Onsala rymdobservatorium
Per Bergman
Chalmers, Rymd-, geo- och miljövetenskap, Onsala rymdobservatorium
Michael Olberg
Chalmers, Rymd-, geo- och miljövetenskap, Onsala rymdobservatorium
John Conway
Chalmers, Rymd-, geo- och miljövetenskap, Onsala rymdobservatorium
Karl Torstensson
European Southern Observatory Santiago
Atacama Large Millimeter-submillimeter Array (ALMA)
C. Duran
European Southern Observatory Santiago
F.M. Montenegro-Montes
European Southern Observatory Santiago
IPARCOS-UCM (Instituto de Física de Partículas y del Cosmos)
Universidad Complutense de Madrid
C. De Breuck
European Southern Observatory (ESO)
Victor Belitsky
Chalmers, Rymd-, geo- och miljövetenskap, Onsala rymdobservatorium
Astronomy and Astrophysics
0004-6361 (ISSN) 1432-0746 (eISSN)
Vol. 668 A2Ämneskategorier
Telekommunikation
Rymd- och flygteknik
Signalbehandling
DOI
10.1051/0004-6361/202244211