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J Sayers¹, D Cunnane², S Crystian³

¹Department of Physics, Mathematics, and Astronomy, California Institute of Technology, Pasadena, California 91125, USA.

The Review of scientific instruments

|March 19, 2025

概括

超导动感应被动射线计 (SKIPR) 能够通过光学遮光剂进行被动成像. 这个150 GHz摄像头实现了衍射有限的性能,探测器噪声受到环境背景光子的限制.

科学领域:

毫米波传感器是一种毫米波传感器.
光学遮光剂是一种遮光剂.
被动成像是一种被动成像.

背景情况:

通过光学遮蔽剂进行被动成像是遥感的一个关键挑战.
毫米波 (mm-wave) 传感为穿透遮光剂提供了潜在的潜力.
现有技术需要进一步开发高分辨率的地面成像.

研究的目的:

开发和描述一种新的毫米波摄像机,用于通过光学遮光剂进行被动成像.
介绍超导动感应被动辐射仪 (SKIPR) 的设计和性能.
评估仪器适用于地面成像应用的适用性.

主要方法:

SKIPR仪器的设计和制造,采用150GHz的偏振灵敏光度摄像头.
一个焦平面阵列与3840个动感应探测器 (KID) 的集成.
采用Gifford-McMahon冷器和电脱磁冰箱的冷系统,加上1.59米交叉的Dragone望远镜,实现了冷系统.

主要成果:

基于KID的详细实验室表征,确定超导电共振器和光学特性.
在现场测量,包括点分布函数和噪声表征.
SKIPR实现了衍射有限的成像,探测器噪声性能取决于环境背景光子的到来. 探测器产量为92%,变化最小.

结论:

SKIPR仪器按预期运行,通过光学遮光剂展示了有效的被动成像能力.
开发的KID在焦平面阵列中表现出稳定的特征.
在具有挑战性的大气条件下,SKIPR是用于地面成像的有希望的工具.

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