Doug Henke
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Axially Corrugated Feed Horn for the Next Generation Very Large Array (ngVLA) Band-5 Receiver Open
This paper introduces a novel axially corrugated feed horn designed for the ngVLA Band-5 receiver, covering the 30–50 GHz range with potential adaptability to nearby bands. The horn features a circular waveguide with a flared throat and si…
A Wideband High-Performance 30-50 GHz E-Plane Waveguide Magic-T for Split-Block Fabrication Open
In this work, a wideband high-performance E-plane magic-T waveguide junction for split-block fabrication is presented. The proposed magic-T design implements an E-plane power divider/combiner which can be built as a split-block by direct m…
View article: CCAT: a status update on the EoR-Spec instrument module for Prime-Cam
CCAT: a status update on the EoR-Spec instrument module for Prime-Cam Open
The Epoch of Reionization Spectrometer (EoR-Spec) is an upcoming Line\nIntensity Mapping (LIM) instrument designed to study the evolution of the early\nuniverse (z = 3.5 to 8) by probing the redshifted [CII] 158 $\\mu$m\nfine-structure lin…
View article: CCAT-prime: The 850 GHz camera for Prime-Cam on FYST
CCAT-prime: The 850 GHz camera for Prime-Cam on FYST Open
The Fred Young Submillimeter Telescope (FYST) at the Cerro-Chajnantor Atacama Telescope prime (CCAT- prime) Facility will host Prime-Cam as a powerful, first generation camera with imaging polarimeters working at several wavelengths and sp…
View article: CCAT-prime: Optical and cryogenic design of the 850 GHz module for Prime-Cam
CCAT-prime: Optical and cryogenic design of the 850 GHz module for Prime-Cam Open
Prime-Cam is a first-generation instrument for the Cerro Chajnantor Atacama Telescope-prime (CCAT-prime) Facility. The 850$~$GHz module for Prime-Cam will probe the highest frequency of all the instrument modules. We describe the parameter…
NRC-HAA Cryogenic Radio Receiver Development Open
The Radio Instrumentation Team (RIT) team at NRC Herzberg in Victoria, Canada, is developing a dual linear polarization, cryogenic radio astronomy receiver covering the frequency range of 30.5 to 50.5 GHz for the next generation Very Large…
Focal Plane Array Concept for ALMA 2030 Open
Focal plane arrays (FPA), integrated into total power antennas, are noted as a desired technology for ALMA development during the 2030s. For full compatibility with ALMA, a dual-linear, sideband-separating (2SB) architecture is necessary. …
View article: CCAT-prime Collaboration: Science Goals and Forecasts with Prime-Cam on the Fred Young Submillimeter Telescope
CCAT-prime Collaboration: Science Goals and Forecasts with Prime-Cam on the Fred Young Submillimeter Telescope Open
We present a detailed overview of the science goals and predictions for the Prime-Cam direct detection camera/spectrometer being constructed by the CCAT-prime collaboration for dedicated use on the Fred Young Submillimeter Telescope (FYST)…
Optical design study for the 860 GHz first-light camera module of CCAT-p (Erratum) Open
This paper, originally published on 13 December 2020, was replaced with a corrected/revised version on 2 February 2021. If you downloaded the original PDF but are unable to access the revision, please contact SPIE Digital Library Customer …
Coherent Multibeam Arrays Using a Cold Aperture Stop Open
To increase the mapping speed of a given area-of-sky, multibeam heterodyne arrays may be used. Since typical heterodyne arrays are spatially arranged sparsely at approximately 4· Nyquist sampling (i.e., two full-width-half-maximum beam wid…