New optics for SEPIA- Heterodyne facility instrument for the APEX telescope
Paper in proceedings, 2019

The design of SEPIA (Swedish ESO PI Instrument for APEX) was driven by the idea of using ALMA receiver cartridges on the APEX telescope. SEPIA was installed at the guest position of the Naismith cabin A, APEX telescope in early 2015. The SEPIA cryostat and optics was designed to accommodate up to 3 ALMA cartridges. In 2017, the APEX facility instrument SHeFI was decommissioned and SEPIA was accepted as its successor. Moving SEPIA from its PI into Facility Instrument position brought additional constrains due to the severe limitations of the available space. That had led to the necessity of complete redesigning of the SEPIA tertiary optics. During February-March 2019, the new tertiary optics was installed in the APEX Cabin A and SEPIA was placed at its final Facility Instrument position. Here, we present the details of the optical design, layout of the optical component placement, the beam alignment technique, the results of the alignment and SEPIA technical commissioning results at the APEX telescope.

ALMA

Receivers

Mixers

Radio astronomy

Gaussian optics

APEX

Radio-wave propagation

SEPIA Instrument

Author

Igor Lapkin

Russian Academy of Sciences

Chalmers, Space, Earth and Environment, Advanced Receiver Development

Sven-Erik Ferm

Chalmers, Space, Earth and Environment, Onsala Space Observatory

Mathias Fredrixon

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

Denis Meledin

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

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

National Research University of Electronic Technology (MIET)

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

Alexey Pavolotskiy

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

Erik Sundin

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

Victor Belitsky

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

ISSTT 2019 - 30th International Symposium on Space Terahertz Technology, Proceedings Book

150-154

2019 30th International Symposium on Space Terahertz Technology, ISSTT 2019
Gothenburg, Sweden,

Subject Categories

Accelerator Physics and Instrumentation

Aerospace Engineering

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Latest update

12/7/2020