Development of Cartridge-type Superconducting Receiver and Evolution of Interstellar Matter with Atomic and Molecular Line Observations

盒式超导接收器的研制与原子分子谱线观测星际物质的演化

• 批准号: 17340058
• 负责人: SEKIMOTO Yutaro
• 金额: $ 10.75万
• 依托单位: National Astronomical Observatory of Japan
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2007
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17340058/
• 关键词: Receiver; submillimeter-wave; superconductivity; SIS mixer; beam pattern; amplitude; phase stability

A quantum-noise limited superconducting receiver has been developed in the 385-500 GHz frequency range. It has been demonstrated to have ultra low noise of 100 K. In this submillimeter frequency, it is the lowest noise in sideband separating receiver. In addition, some improvements on RF and IF frequency coverage have been investigated. The IF output power from this receiver is so stable that it is suitable for practical operations to measure and integrate weak signals from astronomical objects. High precision beam pattern and cross polarization measurement system has been developed successfully. The achievements were submitted to a refereed journal.A submillimeter balanced mixer has also been developed for future heterodyne array. It has low noise temperature in the 400-500 GHz frequency range. The results have been accepted by a refereed journal. As an extension of this research, a prototype of a double balanced mixer has been developed.To study evaluation of interstellar matter, molecular lines such as N2H+, HC3N toward Orion molecular cloud were observed. The results are published in a refereed journal.

研制了385-500 GHz频率范围的量子噪声限超导接收机。它已被证明具有100 K的超低噪声。在亚毫米波段，它是边带分离接收机中噪声最低的。此外，还研究了射频和中频频率覆盖的一些改进。该接收机的中频输出功率稳定，适合于对天体微弱信号进行测量和积分的实际操作。研制成功了高精度光束方向图和交叉偏振测量系统。这些成果已提交给一份经过评审的杂志。还为未来的外差阵列开发了亚毫米波平衡混频器。它在400-500 GHz频率范围内具有低噪声温度。研究结果已被一家权威期刊接受。作为本研究的延伸，研制了一台双平衡混合器样机，观测到了N_2H ~+、HC_3N等分子谱线朝向猎户座分子云的方向，研究了星际物质的评价。研究结果发表在一份权威期刊上。

项目成果

N2H+ and HC3N Observations of the Orion A Cloud

• DOI: 10.1093/pasj/60.3.407
• 发表时间: 2008-04
• 期刊: Publications of the Astronomical Society of Japan
• 影响因子: 2.3
• 作者: K. Tatematsu;R. Kandori;T. Umemoto;Y. Sekimoto

Design and development of SIS mixers for ALMA band 8

• DOI: 10.1109/tasc.2005.849889
• 发表时间: 2005-06
• 期刊: IEEE Transactions on Applied Superconductivity
• 影响因子: 1.8
• 作者: W. Shan;Sheng-Cai Shi;T. Matsunaga;M. Takizawa;Akira Endo;Takashi Noguchi;Y. Uzawa

A 385-500 GHz Low Noise Superconductor-Insulatro-Superconductor Mixer for ALMA band 8

适用于 ALMA 频段 8 的 385-500 GHz 低噪声超导体-绝缘体-超导体混频器

• 发表时间: 2006
• 期刊: IEICE Trans.Electron. E39
• 作者: W.L.Shan;S.Asayama;M.Kamikura;T.Noguchi;S.C.Shi;Y.Sekimoto
• 通讯作者: Y.Sekimoto

A 400-500 GHz Balanced SIS Mixer with a Waveguide Quadrature Hybrid Coupler

具有波导正交混合耦合器的 400-500 GHz 平衡 SIS 混频器

• 发表时间: 2008
• 期刊: International Journal of Infrared and Millimeter Waves
• 作者: Y.Serizawa;Y.Sekimoto;et. al.
• 通讯作者: et. al.

Interaction between the Supernova Remnant HB 21 and Molecular Clouds

• DOI: 10.1086/498232
• 发表时间: 2006-01
• 期刊: The Astrophysical Journal
• 作者: D. Byun;B. Koo;K. Tatematsu;K. Sunada