Desert STAR: A 7 pixel 345 GHz heterodyne array receiver for the Heinrich Hertz Telescope

C. E. Groppi; C. K. Walker; C. Kulesa; D. Golish; A. Hedden; P. Gensheimer; G. Narayanan; A. W. Lichtenberger; U. U. Graf; S. Heyminck

doi:10.1117/12.459361

Desert STAR: A 7 pixel 345 GHz heterodyne array receiver for the Heinrich Hertz Telescope

C. E. Groppi, C. K. Walker, C. Kulesa, D. Golish, A. Hedden, P. Gensheimer, G. Narayanan, A. W. Lichtenberger, U. U. Graf, S. Heyminck

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

13 Scopus citations

Abstract

DesertSTAR is a 7 beam, 345 GHz heterodyne array receiver for the Heinrich Hertz Telescope (HHT) on Mt. Graham, AZ. The instrument uses fixed-backshort Superconductor-Insulator-Superconductor (SIS) mixers with a broadband waveguide probe. Instantaneous bandwidths greater than 2 GHz can be achieved over the entire 345 GHz atmospheric window. A cryostat with Joule-Thompson (JT) mechanical refrigerator allows continuous operation and 1.8W of cooling capacity at 4K, and provides the needed temperature stability for low-noise operation. Local Oscillator (LO) distribution is accomplished with a novel phase grating that yields high efficiency and power uniformity in a hexagonally symmetric geometry. The computer controlled bias system is an evolution of a proven design that is simple, portable to any computer platform, and easily extensible to over 100 channels. It provides control and monitoring of bias, temperature and vacuum from any X-windows capable machine, and writes an instrument status web page visible with any web browser. The 2 GHz Intermediate Frequency (IF) bandwidth allows the future addition of a wideband backend optimized for extragalactic observations, with ∼1700 km/s of velocity coverage. We present measurements of receiver performance and plans for integration on the HHT.

Original language	English (US)
Title of host publication	Proceedings of SPIE - The International Society for Optical Engineering
Editors	T.G. Phillips, J. Zmuidzinas
Pages	330-337
Number of pages	8
Volume	4855
DOIs	https://doi.org/10.1117/12.459361
State	Published - 2002
Externally published	Yes
Event	Millimeter and Submillimeter Detectors for Astronomy - Waikaloa, HI, United States Duration: Aug 25 2002 → Aug 28 2002

Other

Other	Millimeter and Submillimeter Detectors for Astronomy
Country/Territory	United States
City	Waikaloa, HI
Period	8/25/02 → 8/28/02

Keywords

SIS heterodyne array receiver submillimeter molecular spectroscopy

ASJC Scopus subject areas

Electrical and Electronic Engineering
Condensed Matter Physics

Access to Document

10.1117/12.459361

Cite this

Groppi, C. E., Walker, C. K., Kulesa, C., Golish, D., Hedden, A., Gensheimer, P., Narayanan, G., Lichtenberger, A. W., Graf, U. U., & Heyminck, S. (2002). Desert STAR: A 7 pixel 345 GHz heterodyne array receiver for the Heinrich Hertz Telescope. In T. G. Phillips, & J. Zmuidzinas (Eds.), Proceedings of SPIE - The International Society for Optical Engineering (Vol. 4855, pp. 330-337) https://doi.org/10.1117/12.459361

Groppi, CE, Walker, CK, Kulesa, C, Golish, D, Hedden, A, Gensheimer, P, Narayanan, G, Lichtenberger, AW, Graf, UU & Heyminck, S 2002, Desert STAR: A 7 pixel 345 GHz heterodyne array receiver for the Heinrich Hertz Telescope. in TG Phillips & J Zmuidzinas (eds), Proceedings of SPIE - The International Society for Optical Engineering. vol. 4855, pp. 330-337, Millimeter and Submillimeter Detectors for Astronomy, Waikaloa, HI, United States, 8/25/02. https://doi.org/10.1117/12.459361

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abstract = "DesertSTAR is a 7 beam, 345 GHz heterodyne array receiver for the Heinrich Hertz Telescope (HHT) on Mt. Graham, AZ. The instrument uses fixed-backshort Superconductor-Insulator-Superconductor (SIS) mixers with a broadband waveguide probe. Instantaneous bandwidths greater than 2 GHz can be achieved over the entire 345 GHz atmospheric window. A cryostat with Joule-Thompson (JT) mechanical refrigerator allows continuous operation and 1.8W of cooling capacity at 4K, and provides the needed temperature stability for low-noise operation. Local Oscillator (LO) distribution is accomplished with a novel phase grating that yields high efficiency and power uniformity in a hexagonally symmetric geometry. The computer controlled bias system is an evolution of a proven design that is simple, portable to any computer platform, and easily extensible to over 100 channels. It provides control and monitoring of bias, temperature and vacuum from any X-windows capable machine, and writes an instrument status web page visible with any web browser. The 2 GHz Intermediate Frequency (IF) bandwidth allows the future addition of a wideband backend optimized for extragalactic observations, with ∼1700 km/s of velocity coverage. We present measurements of receiver performance and plans for integration on the HHT.",

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AB - DesertSTAR is a 7 beam, 345 GHz heterodyne array receiver for the Heinrich Hertz Telescope (HHT) on Mt. Graham, AZ. The instrument uses fixed-backshort Superconductor-Insulator-Superconductor (SIS) mixers with a broadband waveguide probe. Instantaneous bandwidths greater than 2 GHz can be achieved over the entire 345 GHz atmospheric window. A cryostat with Joule-Thompson (JT) mechanical refrigerator allows continuous operation and 1.8W of cooling capacity at 4K, and provides the needed temperature stability for low-noise operation. Local Oscillator (LO) distribution is accomplished with a novel phase grating that yields high efficiency and power uniformity in a hexagonally symmetric geometry. The computer controlled bias system is an evolution of a proven design that is simple, portable to any computer platform, and easily extensible to over 100 channels. It provides control and monitoring of bias, temperature and vacuum from any X-windows capable machine, and writes an instrument status web page visible with any web browser. The 2 GHz Intermediate Frequency (IF) bandwidth allows the future addition of a wideband backend optimized for extragalactic observations, with ∼1700 km/s of velocity coverage. We present measurements of receiver performance and plans for integration on the HHT.

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Desert STAR: A 7 pixel 345 GHz heterodyne array receiver for the Heinrich Hertz Telescope

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