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Advancement of Heterodyne Focal Plane Arrays for Terahertz Astronomy

Abstract The Kilopixel Array Pathfinder Project (KAPPa) advances the number of coherent high-frequency terahertz (THz) receivers that could be packed into a single focal plane array on existing submm telescopes. The KAPPa receiver, at 655-695 GHz, is a high frequency heterodyne receiver that can achieve system temperatures of less than 200 K, the specification for ALMA band-9. The KAPPa receiver uses a novel design of a permanent magnet to suppress the noise generated by the DC Josephson effect. This is in stark contrast to the benchmark solution of an electromagnet that is both too expensive and too large for use in kilo-pixel arrays. I present a simple, robust design for a single receiver element that can be tessellated throughout a telescope'... (more)
Created Date 2016
Contributor Wheeler, Caleb Wheeler (Author) / Groppi, Christopher E (Advisor) / Butler, Nathaniel (Committee member) / Christensen, Philip (Committee member) / Mauskopf, Philip (Committee member) / Scowen, Paul (Committee member) / Arizona State University (Publisher)
Subject Astrophysics / Engineering / array / heterodyne / magnet / receivers / SIS / terahertz
Type Doctoral Dissertation
Extent 187 pages
Language English
Reuse Permissions All Rights Reserved
Note Doctoral Dissertation Astrophysics 2016
Collaborating Institutions Graduate College / ASU Library
Additional Formats MODS / OAI Dublin Core / RIS

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Description Dissertation/Thesis