An update on the SCUBA-2 project
An update on the SCUBA-2 project
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SCUBA-2 项目的最新情况
DOI：
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发表时间：
2004
期刊：
影响因子：
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通讯作者：
P. Bastien
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作者：
M. D. Audley;W. Holland;T. Hodson;M. Macintosh;I. Robson;K. Irwin;G. Hilton;W. Duncan;C. Reintsema;A. Walton;W. Parkes;P. Ade;I. Walker;M. Fich;J. Kycia;M. Halpern;D. Naylor;G. Mitchell;P. Bastien
SCUBA-2是2006年取代詹姆斯·克拉克麦克斯韦望远镜（JCMT）上的SCUBA（亚毫米波普通用户测辐射热计阵列），是一个用于亚毫米波天文学的大格式测辐射热计阵列。与以前使用离散测辐射热计的探测器不同，SCUBA-2有两个直流耦合的单片填充阵列，总共有~ 10，000个测辐射热计。它将在850和450微米波长下提供50平方弧分视场的同时成像。SCUBA-2预计将对早期宇宙中星系形成和演化的研究以及我们银河系中星星和行星的形成产生巨大影响。将天空映射到相同的S/N比SCUBA快1000倍，它还将作为新的亚毫米波干涉仪（如阿尔马）的探路者。SCUBA-2的双光子耦合像素使用超导过渡边缘传感器，工作温度为120 mK，性能受到天空背景光子噪声的限制。单片硅探测器阵列通过Bosch工艺进行深蚀刻，以隔离氮化硅膜上的像素。通过铟凸块键合到SQUID时域多路复用器（MUX）进行电连接。我们给出了SCUBA-2系统的概述及其状态的更新，并描述了使这种独特的仪器成为可能的一些技术创新。
SCUBA-2, which replaces SCUBA (the Submillimeter Common User Bolometer Array) on the James Clerk Maxwell Telescope (JCMT) in 2006, is a large-format bolometer array for submillimeter astronomy. Unlike previous detectors which have used discrete bolometers, SCUBA-2 has two dc-coupled, monolithic, filled arrays with a total of ~10,000 bolometers. It will offer simultaneous imaging of a 50 sq-arcmin field of view at wavelengths of 850 and 450 microns. SCUBA-2 is expected to have a huge impact on the study of galaxy formation and evolution in the early Universe as well as star and planet formation in our own Galaxy. Mapping the sky to the same S/N up to 1000 times faster than SCUBA, it will also act as a pathfinder for the new submillimeter interferometers such as ALMA. SCUBA-2's absorber-coupled pixels use superconducting transition edge sensors operating at 120 mK for performance limited by the sky background photon noise. The monolithic silicon detector arrays are deep-etched by the Bosch process to isolate the pixels on silicon nitride membranes. Electrical connections are made through indium bump bonds to a SQUID time-domain multiplexer (MUX). We give an overview of the SCUBA-2 system and an update on its status, and describe some of the technological innovations that make this unique instrument possible.