Oral Presentation

ALMA Band 1 Receiver performance and first light

Author(s): Teddy Huang

Presenter: Teddy Huang (ASIAA)

The Atacama Large Millimeter/submillimeter Array (ALMA) Band-1 receiver covers the frequency band between 35-50 GHz. An extension of up to 52 GHz is on a best-effort basis. Covering the longest wavelengths visible with ALMA, this receiver is enabling studies of dust grain evolution in proto-planetary systems probing dust grain sizes close to 1cm, and with multiple red-shifted molecular lines it will open up a new window in the high-redshift Universe. The Band-1 project has recently achieved first light and with this passed a major project milestone. We present the initial performance and characterization of the first Band-1 receivers installed on ALMA.