Optimizing Charge-coupled Device Readout Enabled by the Floating-gate Amplifier

doi:10.1088/1538-3873/adca58

2025-04-28

DOI：10.1088/1538-3873/adca58

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多放大器传感（MAS）电荷耦合器件（CCDs）最近已被证明是很有前景的硅探测器，能够满足下一代Stage-5光谱巡天的噪声灵敏度要求，并且可能适用于Habitable Worlds Observatory等任务中对极暗弱天体的未来空间成像。基于Skipper CCD实现深度亚电子噪声地板的能力，MAS CCDs利用串行寄存器上的多个浮栅放大器，通过增加输出节点数量倍数来提高读出速度，相比Skipper CCD。我们介绍并在16通道原型器件上实验演示了新的读出技术，利用MAS CCD的浮栅放大器通过每行重置一次而非每像素重置一次来优化相关双采样。通过这种新模式，我们发现了一个最优滤波器，可在读出过程中从信号中减去噪声。我们还利用MAS CCD的结构，通过独立改变信号和参考水平的积分时间来调整读出时间。结合16个输出的最优加权平均，这些方法使我们能够达到单像素每次电荷测量的0.9 e- rms pix-1亚电子噪声，速率为19 μs pix-1，同时使读出时间比之前未经这些技术评估的性能快30%，读出噪声低10%。

Keyword:

GEV DARK-MATTER

NOISE

CONSTRAINTS

ASTROPY

期刊

Publications of the Astronomical Society of the Pacific

IF:

7.7

论文数:

4.0K

被引数:

1.8W

机构

Univ Calif Berkeley

学者数:

2.4K

论文数: 1.4K

被引数: 708

Lawrence Berkeley Natl Lab

学者数:

785

论文数: 411

被引数: 266

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