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.

已开发出 385-500 GHz 频率范围内的量子噪声受限超导接收器。它已被证明具有100 K的超低噪声。在这个亚毫米频率下，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范围的一些改进。该接收机的中频输出功率非常稳定，适合实际操作中测量和积分天体微弱信号。高精度光束方向图和交叉偏振测量系统研制成功。该成果已提交给参考期刊。还为未来的外差阵列开发了亚毫米平衡混频器。它在 400-500 GHz 频率范围内具有低噪声温度。结果已被参考期刊接受。作为这项研究的延伸，双平衡混合器的原型已经开发出来。为了研究星际物质的评估，观测到了朝向猎户座分子云的分子线，例如N2H+、HC3N。结果发表在参考期刊上。

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

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

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 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