Dual-channel sis receivers for the iram Plateau de Bure Interferometer

Blondel, J.; Carter, M.; Karpov, A.; Lazareff, B.; Mattiocco, F.; Lamb, James W.

doi:10.1007/bf02069489

Cited by 4 publications

(10 citation statements)

References 8 publications

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“…The schematic of the IRAM dual channel receiver [2] is shown in the Fig.1; the 3mm channel is located on the bottom left side of the drawing. 16λ.…”

Section: Optical Designmentioning

confidence: 99%

“…The initial data of the 3mm horn [2][3] The proposed optical solution is shown schematically in Fig.5. Since it is preferable not to replace the HDPE lens, as it is an integral part of the receiver, we designed a new external elliptical mirror which results in an achromatic doublet compatible with SRT.…”

Section: Optical Designmentioning

confidence: 99%

“…In this paper, a 3 mm SIS receiver for the Gregorian focus of the Sardinia Radio Telescope (SRT) is presented. The receiver, developed at IRAM (Institute de Radio Astronomie Millimétrique) for the Plateau de Bure interferometer (PdBI), covers two frequency bands simultaneously: the ~3 mm band (84 -116 GHz) and ~1.3mm band (210 -248 GHz) [2]. It was installed on one of the PdBI antennas until 2006, after which it was replaced by a receiver of newer generation.…”

Section: Introductionmentioning

confidence: 99%

“…[2][3] describe the optics of the receiver in detail. In reference to the 3mm channel, the horn, designed to produce Gaussian beams, has a flare angle of 7.42° and the aperture diameter of 12.4 mm; the beam waist is close to the feed-…”

mentioning

confidence: 99%

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A 3mm band SIS receiver for the Sardinia Radio Telescope

et al. 2014

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We present the optical and mechanical design of a 3mm band SIS receiver for the Gregorian focus of the Sardinia Radio Telescope (SRT). The receiver, was designed and built at IRAM and deployed on the IRAM for the Plateau de Bure Interferometer antennas until 2006. Following its decommissioning the receiver was purchased by the INAFAstronomical Observatory of Cagliari with the aim to adapt its optics for test of the performance of the new 64-m diameter Sardinia Radio Telescope (SRT) in the 3 mm band (84 -116 GHz). The instrument will be installed in the rotating turret inside of the Gregorian focal room of SRT. The dimensions of the focal room, the horn position in the lower side of the cryostat and the vessel for the liquid helium impose very hard constraints to the optical and mechanical mounting structure of the receiver inside the cabin. We present the receiver configuration and how we plan to install it on SRT.

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“…The schematic of the IRAM dual channel receiver [2] is shown in the Fig.1; the 3mm channel is located on the bottom left side of the drawing. 16λ.…”

Section: Optical Designmentioning

confidence: 99%

Section: Optical Designmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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A 3mm band SIS receiver for the Sardinia Radio Telescope

et al. 2014

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“…The receiver acquired from IRAM is a dual-feed system that covers two frequency bands simultaneously: a portion of the W-band (84-116 GHz), also known as the 3 mm band, and a frequency range between 210 and 248 GHz (1.3 mm band) [28,29]. The instrument observed single linear polarisations and operated at cryogenic temperature to achieve a low receiver noise temperature [28,29]. All of the components of the receiver could be controlled and managed by a microcontroller using an Ethernet link.…”

Section: Introductionmentioning

confidence: 99%

Adaptation of an IRAM W-Band SIS Receiver to the INAF Sardinia Radio Telescope: A Feasibility Study and Preliminary Tests

Ladu,

Schirru,

Ortu

et al. 2023

Sensors

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Radio telescopes are used by astronomers to observe the naturally occurring radio waves generated by planets, interstellar molecular clouds, galaxies, and other cosmic objects. These telescopes are equipped with radio receivers that cover a portion of the radio frequency (RF) and millimetre-wave spectra. The Sardinia Radio Telescope (SRT) is an Italian instrument designed to operate between 300 MHz and 116 GHz. Currently, the SRT maximum observational frequency is 26.5 GHz. A feasibility study and preliminary tests were performed with the goal of equipping the SRT with a W-band (84–116 GHz) mono-feed radio receiver, whose results are presented in this paper. In particular, we describe the adaptation to the SRT of an 84–116 GHz cryogenic receiver developed by the Institute de Radio Astronomie Millimétrique (IRAM) for the Plateau de Bure Interferometer (PdBI) antennas. The receiver was upgraded by INAF with a new electronic control system for the remote control from the SRT control room, with a new local oscillator (LO), and with a new refrigeration system. Our feasibility study includes the design of new receiver optics. The single side band (SSB) receiver noise temperature measured in the laboratory, Trec ≈ 66 K at 86 GHz, is considered sufficiently low to carry out the characterisation of the SRT active surface and metrology system in the 3 mm band.

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