At NAOJ, we are studying and developing wide-band receiver optics components to be used in future ALMA wide-band receivers. In particular, we are part of a consortium led by ESO for the development of a wide-band ALMA Band 2 (67-116 GHz) receiver. We have designed and characterized a corrugated horn, OMT and dielectric lens which comply with the stringent ALMA optical requirements over bands 2 and 3. For the study of the lens, we have established a quasi-optical material characterization setup to accurately measure material properties and use those results in lens designs. In addition, we are also collaborating with KASI in the development of a Band7+8 (275-500GHz) receiver. After the successful design and characterization of prototype rece...
Context. The Atacama Large Millimeter/submillimeter Array (ALMA) has been in operation since 2011, b...
This paper describes the design and development of the ALMA Band 9 receiver cartridges. The ALMA pro...
The ALMA telescope will be an interferometer of 64 antennas, which will be situated in the Atacama d...
The ALMA telescope is one of the largest on-ground astronomical projects in the world. It has been p...
In this paper we report the first results of the optical components development and the overall opti...
We present the design, implementation, and characterization of the optics of ALMA Band 1, the lowest...
The Atacama Large Millimeter Array (ALMA) is an interferometer consisting of 64 antennae of 12 m dia...
In this report a mm wave optics prototype for an Atacama Large Millimeter Array (ALMA) receiver cart...
Context. The Atacama Large Millimeter/submillimeter Array (ALMA) has been in operation since 2011, b...
This paper describes the design and development of the ALMA Band 9 receiver cartridges. The ALMA pro...
The ALMA telescope will be an interferometer of 64 antennas, which will be situated in the Atacama d...
The ALMA telescope is one of the largest on-ground astronomical projects in the world. It has been p...
In this paper we report the first results of the optical components development and the overall opti...
We present the design, implementation, and characterization of the optics of ALMA Band 1, the lowest...
The Atacama Large Millimeter Array (ALMA) is an interferometer consisting of 64 antennae of 12 m dia...
In this report a mm wave optics prototype for an Atacama Large Millimeter Array (ALMA) receiver cart...
Context. The Atacama Large Millimeter/submillimeter Array (ALMA) has been in operation since 2011, b...
This paper describes the design and development of the ALMA Band 9 receiver cartridges. The ALMA pro...
The ALMA telescope will be an interferometer of 64 antennas, which will be situated in the Atacama d...