Design and measurement of a direct-drillable smooth walled feedhorn at 1.2 THz for the next generation BLASTPol experiment
- Resource Type
- Authors
- Philip Daniel Mauskopf; Matthew Underhill; Peter A. R. Ade; Christopher Groppi
- Source
- SPIE Proceedings.
- Subject
- Scanner
Materials science
HFSS
Plane (geometry)
business.industry
Terahertz radiation
Polarimetry
Rotation
01 natural sciences
010309 optics
Optics
Horn (acoustic)
0103 physical sciences
business
010303 astronomy & astrophysics
Beam (structure)
- Language
- ISSN
- 0277-786X
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.