Design and measurement of a direct-drillable smooth walled feedhorn at 1.2 THz for the next generation BLASTPol experiment

Groppi, Christopher E., Mauskopf, P. M. ORCID: https://orcid.org/0000-0001-6397-5516, Ade, P. A. R. ORCID: https://orcid.org/0000-0002-5127-0401 and Underhill, M. 2016. Design and measurement of a direct-drillable smooth walled feedhorn at 1.2 THz for the next generation BLASTPol experiment. Presented at: SPIE Astronomical Telescopes + Instrumentation 2016, Edinburgh, Scotland, 26 June - 1 July 2016. Proceedings Volume 9914, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VIII. , vol.9914 SPIE, 99142P. 10.1117/12.2231346

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Abstract

We present the design and measurement of a direct-drillable smooth walled feedhorn for the Next Generation BLASTPol balloon experiment. Custom milling cutters were obtained commercially and used to fabricate a two feedhorn structures with UG-387 flanges, each with 0.5mm section of circular waveguide, which were then mated back to back. These horns were then tested at Cardiff University using a rotation stage scanner to measure E and H plane cuts of the horn. The measurements show good agreement in both the beam FWHM and sidelobes as compared to HFSS simulations of the horn.

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Published Online
Status:	Published
Schools:	Physics and Astronomy
Publisher:	SPIE
Last Modified:	04 May 2023 12:15
URI:	https://orca.cardiff.ac.uk/id/eprint/156779

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