Published 2020
| Version v1
Publication
SWIPE Multi-mode Pixel Assembly Design and Beam Pattern Measurements at Cryogenic Temperature
Description
In this paper, we present beam pattern tests performed on the SWIPE multi-mode bolometric detector pixel assembly. A 20-mm-aperture horn is coupled to a large detector absorber (10 mm diameter) with a TES sensor located on the side. The pixel assembly has been tested at the bolometer base temperature of 340 mK, inside a custom cryogenic test bed, looking at a Gunn oscillator (128 GHz) located in the far field. We developed a custom cryogenic neoprene absorber, in addition to the stack of standard metal meshes low-pass filters, to reduce the background on the detector at a level similar to the one expected in flight, allowing to measure the main beam of the pixel assembly. The measured FWHM is 21∘, slightly narrower than the expected one (24∘), due to vignetting produced by the filters stack.
Additional details
Identifiers
- URL
- http://hdl.handle.net/11567/1010176
- URN
- urn:oai:iris.unige.it:11567/1010176
Origin repository
- Origin repository
- UNIGE