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一个宽带超导探测器,适合在大型阵列中使用
Peter K Day1, Henry G LeDuc, Benjamin A Mazin
1Jet Propulsion Laboratory, Pasadena, California 91107, USA. Peter.K.Day@jpl.nasa.gov
Nature
|October 24, 2003
概括
科学家们开发了一种用于大型阵列的新型超导探测器. 这一进步对于未来的宇宙微波背景和X射线天文学任务至关重要,这些任务需要提高灵敏度和分辨率.
科学领域:
- 天体物理学 天体物理学
- 探测器物理学的物理
背景情况:
- 低温探测器为天文学提供了高灵敏度,但很难扩展到大型数组.
- 目前的宇宙微波背景 (CMB) 探测器接近光子噪声极限,需要更大的数组来深入探索宇宙.
- 射线天文学也需要大型阵列,单像素探测器达到高分辨率,但缺乏阵列集成.
研究的目的:
- 为了展示一种新的超导探测器.
- 为了展示探测器的易于制造和适合大规模集成.
- 评估其未来天文学应用的潜力.
主要方法:
- 一个新的超导探测器的制造.
- 检测器灵敏度和能量分辨率的测试.
- 对数组集成可行性的评估.
主要成果:
- 开发的超导探测器很容易制造.
- 它的灵敏度在CMB观测要求的数量级之内.
- 能量分辨率接近未来X射线天文学任务的目标.
结论:
- 展示的超导探测器是大格式数组的有希望的候选者.
- 这项技术可以通过启用敏感的高分辨率阵列来推进CMB和X射线天文学.
- 进一步开发可以克服目前探测器可扩展性的局限性.
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