Design of the optical system for ALMA Band 1

被引：7

作者：

Reyes, Nicolas ^{[1
,2
]}

Tapia, Valeria ^{[1
]}

Henke, Doug ^{[3
]}

Sanchez-Carrasco, Miguel ^{[1
,4
]}

Mena, F. Patricio ^{[1
]}

Claude, Stephane M. X. ^{[3
]}

Bronfman, Leonardo ^{[5
]}

机构：

[1] Univ Chile, Dept Elect Engn, Santiago, Chile

[2] Max Planck Inst Radioastron, D-53121 Bonn, Germany

[3] NRC Herzburg Inst Astrophys, Ottawa, ON, Canada

[4] Inst Astrofis Andalucia, Andalucia, Spain

[5] Univ Chile, Dept Astron, Santiago, Chile

来源：

GROUND-BASED AND AIRBORNE TELESCOPES V | 2014年 / 9145卷

关键词：

ALMA; band; 1; optics; spline-profile horn; lens; noise temperature; efficiency;

D O I：

10.1117/12.2055170

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

This work presents a complete study of the optical system for ALMA band 1, which covers the frequency range from 35 to 50 GHz, with the goal of extending the coverage up to 52GHz. Several options have been explored to comply with the stringent technical specifications, restrictions, and cost constraints. The best solution consists of a corrugated zoned lens, two infrared filters and a spline profiled corrugated horn. The calculated aperture efficiency is better than 75%, while the average noise contribution is lower than 10.3 K. The first prototypes of the system have been constructed and first evaluation results available

引用

页数：8

共 8 条

[1] Claude S., 2013, ALMA
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[3] Janse van Rensbur D., 2010, MILLIMETER WAVE NEAR
[4] Low-noise, high-efficiency optics design for ALMA receivers
Lamb, JW
[J]. IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 2003, 51 (08) : 2035 - 2047
[5] Sensitivity Analysis of Optical Systems in Radio Telescopes
Sugimoto, Masahiro
Iguchi, Satoru
Inatani, Junji
Sekimoto, Yutaro
Asayama, Shin'ichiro
[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 2010, 62 (01) : 39 - 50
[6] Wootten A., 2001, ASP CONF PROC, V253
[7] Zorzi P., 2010, P 21 INT S SPAC TER, P348
[8] Construction and Measurement of a 31.3-45 GHz Optimized Spline-profile Horn with Corrugations
Zorzi, Pablo
Granet, Christophe
Colleoni, Franco
Reyes, Nicolas
Pizarro, Jose
Mena, Fausto-Patricio
Bronfman, Leonardo
[J]. JOURNAL OF INFRARED MILLIMETER AND TERAHERTZ WAVES, 2012, 33 (01) : 17 - 24

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