Instrument Information
IDENTIFIER urn:nasa:pds:context:instrument:eso-chajnantor.alma.alma_radio_receiver::1.3
NAME ALMA Radio Receivers
TYPE Radio Receiver
DESCRIPTION The Atacama Large Millimeter/submillimeter Array (ALMA) is a state-of-the-art interferometer consisting of 66 individual antennas, each equipped with a specialized suite of detectors tailored for diverse spectral regions. This paper presents a comprehensive overview of the receiver technology employed by ALMA, detailing its capacity to detect electromagnetic signals within a vast frequency range of 35 GHz to 950 GHz, corresponding to wavelengths between 8.6 mm and 0.32 mm. Each receiver is designed for specific frequency bands, with varying stages of development and deployment. For instance, Band 1 is currently in production (35-50 GHz), while Band 2 is under development (67-90 GHz). The various bands, from Bands 3 to 10, span wavelengths descending from 2.59 mm (84 GHz) to 0.32 mm (950 GHz), showcasing contributions from numerous global institutions, including the Herzberg Institute of Astrophysics, National Astronomical Observatory of Japan, and the National Radio Astronomy Observatory. By delineating the specifications and collaborative efforts involved in the construction of these receivers, this study highlights the critical technological advancements within ALMA that facilitate high-resolution observations of astronomical phenomena. The integration of this multifaceted receiver system underscores ALMA's significance as a premier observational facility in modern astronomy, enabling groundbreaking research across a broad spectrum of astrophysical inquiries.
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