The background-limited infrared-submillimeter spectrograph (BLISS) for SPICA: a design study
The background-limited infrared-submillimeter spectrograph (BLISS) for SPICA: a design study
复制标题
SPICA 的背景限制红外亚毫米光谱仪 (BLISS)：设计研究
作者：
C. Bradford;J. Bock;W. Holmes;M. Kenyon;A. Beyer;M. Werner;M. Rud;T. Prouvé;P. Echternach;K. Irwin;S. Cho;M. Harwit;G. Stacey;G. Helou;L. Armus;P. Appleton;J. Smith;U. Gorti;G. Rieke;E. Egami;D. Lester;J. Glenn;M. Malkan;D. Dale
我们正在为SPICA开发背景受限的亚毫米光谱仪（布利斯），以提供远红外测量光谱的突破性能力。SPICA的大冷孔径允许中红外到亚毫米观测，这些观测仅受自然背景的限制，布利斯的设计接近这一基本限制。BLISS-SPICA在获得全波段光谱方面比Herschel和索菲亚上的光谱仪快6个数量级。它使光谱学的尘埃遮蔽星系在所有时代回到第一个十亿年后的大爆炸（红移6），并研究行星形成的所有阶段在拱星盘。布利斯系统覆盖35 - 433微米波段，可同时耦合两个天空位置.该仪器被冷却到50 mK，以获得最佳灵敏度。探测器封装是4224氮化硅微网格腿隔离测辐射热计与超导过渡边缘感测（TES）热敏电阻，读出与低温时域复用器。布利斯的所有技术元素都继承了成熟的科学仪器，其中许多都有自己的。我们报告我们的设计研究中，我们正在优化性能，同时适应SPICA的限制，包括严格的低温质量预算。特别是，我们提出了我们的进展，在光学设计和波导光谱仪原型。在会议7741（拜尔等人）的配套文件。更详细地讨论了在布利斯TES测辐射热计的发展进展。
We are developing the Background-Limited Infrared-Submillimeter Spectrograph (BLISS) for SPICA to provide a breakthrough capability for far-IR survey spectroscopy. SPICAs large cold aperture allows mid-IR to submm observations which are limited only by the natural backgrounds, and BLISS is designed to operate near this fundamental limit. BLISS-SPICA is 6 orders of magnitude faster than the spectrometers on Herschel and SOFIA in obtaining full-band spectra. It enables spectroscopy of dust-obscured galaxies at all epochs back to the rst billion years after the Big Bang (redshift 6), and study of all stages of planet formation in circumstellar disks. BLISS covers 35 - 433 microns range in ve or six wavelength bands, and couples two 2 sky positions simultaneously. The instrument is cooled to 50 mK for optimal sensitivity with an on-board refrigerators. The detector package is 4224 silicon-nitride micro-mesh leg-isolated bolometers with superconducting transition-edge-sensed (TES) thermistors, read out with a cryogenic time-domain multiplexer. All technical elements of BLISS have heritage in mature scientic instruments, and many have own. We report on our design study in which we are optimizing performance while accommodating SPICAs constraints, including the stringent cryogenic mass budget. In particular, we present our progress in the optical design and waveguide spectrometer prototyping. A companion paper in Conference 7741 (Beyer et al.) discusses in greater detail the progress in the BLISS TES bolometer development.