Share Email Print
cover

Proceedings Paper

Artificial calibration source for ALMA radio interferometer
Author(s): Hitoshi Kiuchi; Richard Hills; Nicholas D. Whyborn; Shinichiro Asayama; Seiichi Sakamoto; Satoru Iguchi; Stuartt A. Corder
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

The ALMA (Atacama Large Millimeter/submillimeter Array) radio interferometer has some different types of antennas which have a variation of gain and leakages across the primary beam of an individual antenna. We have been developing an artificial calibration source which is used for compensation of individual difference of antennas. In a high-frequency antenna, using astronomical sources to do calibration measurement would be extremely time consuming, whereas with the artificial calibration source becomes a realistic possibility. Photonic techniques are considered to be superior to conventional techniques based on electronic devices in terms of wide bandwidth and high-frequency signals. Conversion from an optical signal to a millimeter/sub-millimeter wave signal is done by a photo-mixer.

Paper Details

Date Published: 19 July 2016
PDF: 8 pages
Proc. SPIE 9914, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VIII, 99142O (19 July 2016); doi: 10.1117/12.2232192
Show Author Affiliations
Hitoshi Kiuchi, National Astronomical Observatory of Japan (Japan)
Richard Hills, Univ. of Cambridge (United Kingdom)
Nicholas D. Whyborn, ALMA (Chile)
Shinichiro Asayama, National Astronomical Observatory of Japan (Japan)
Seiichi Sakamoto, National Astronomical Observatory of Japan (Japan)
Satoru Iguchi, National Astronomical Observatory of Japan (Japan)
Stuartt A. Corder, ALMA (Chile)


Published in SPIE Proceedings Vol. 9914:
Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VIII
Wayne S. Holland; Jonas Zmuidzinas, Editor(s)

© SPIE. Terms of Use
Back to Top