Plan of receiver development for ASTE/LMSA

Yutaro Sekimoto; Takeshi Sakai; Gaku Saito; Kotaro Kohno; Hiroyuki Iwashita; Naohisa Satou; Toshikazu Takahashi; Takashi Noguchi; Ryohei Kawabe; Hiroyuki Maezawa; Tetsuya Ito; Satoshi Yamamoto

doi:10.1117/12.390459

3 July 2000 Plan of receiver development for ASTE/LMSA

Yutaro Sekimoto, Takeshi Sakai, Gaku Saito, Kotaro Kohno, Hiroyuki Iwashita, Naohisa Satou, Toshikazu Takahashi, Takashi Noguchi, Ryohei Kawabe, Hiroyuki Maezawa, Tetsuya Ito, Satoshi Yamamoto

Author Affiliations +

Proceedings Volume 4015, Radio Telescopes; (2000) https://doi.org/10.1117/12.390459
Event: Astronomical Telescopes and Instrumentation, 2000, Munich, Germany

Abstract

We present a plan of heterodyne receivers for Atacama Submillimeter Telescope Experiment (ASTE), which is one of Japanese R&D project of Large Millimeter Submillimeter Array (LMSA) and Atacama Large Millimeter Array (ALMA). A new 10 m submillimeter-wave telescope has been pre-installed at Nobeyama since February 2000 and will be installed at Pampa la Bola (el. 4800 m) in northern Chile. The telescope has four receiver layouts: (1) A shaped Cassegrain optics was designed for the Nobeyama operation to achieve high beam-efficiency at millimeter-wave bands. (2) Normal Gaussian optics will be replaced for the Chile operation to optimize submillimeter- wave bands up to 850 GHz. (3) It is possible to install an ALMA prototype receiver at the focus of secondary reflector. (4) An optics for submillimeter SIS photon camera. We describe the 350 GHz receiver which noise temperature was around 55 K in the frequency band of 330 - 360 GHz. The temperature ripple at the 4 K stage of two stages Gifford-McMahon refrigerator has been reduced to be less than 10 mK by employing a He-pot temperature stabilizer.

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Yutaro Sekimoto, Takeshi Sakai, Gaku Saito, Kotaro Kohno, Hiroyuki Iwashita, Naohisa Satou, Toshikazu Takahashi, Takashi Noguchi, Ryohei Kawabe, Hiroyuki Maezawa, Tetsuya Ito, and Satoshi Yamamoto "Plan of receiver development for ASTE/LMSA", Proc. SPIE 4015, Radio Telescopes, (3 July 2000); https://doi.org/10.1117/12.390459

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