We outline the scientific motivation for reducing the systematics in the image sensors used in the LSST. Some examples are described, leading to lab investigations. The CCD250 (Teledyne-e2v) and STA3900 Imaging Technology Laboratory (ITL) charge-coupled devices (CCDs) used in Rubin Observatory’s LSSTCam are tested under realistic LSST f/1.2 optical beam in a lab setup. In the past, this facility has been used to characterize these CCDs, exploring the systematic errors due to charge transport. Now, this facility is being used to optimize the clocking scheme and voltages. The effect of different clocking schemes on the on-chip systematics such as non-linear crosstalk, noise, persistence, and photon transfer is explored. The goal is to converge on an optimal configuration for the LSSTCam CCDs, which minimizes resulting dark energy science systematics.

中文翻译：

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科学应用驱动的 LSSTCam 电荷耦合器件时钟优化


我们概述了减少 LSST 中使用的图像传感器中的系统学的科学动机。描述了一些示例，导致实验室调查。鲁宾天文台 LSSTCam 中使用的 CCD250 （Teledyne-e2v） 和STA3900成像技术实验室 （ITL） 电荷耦合器件 （CCD） 在实验室设置中在真实的 LSST f/1.2 光束下进行了测试。过去，该设施已被用于表征这些 CCD，探索由电荷传输引起的系统误差。现在，该设施被用于优化 clocking scheme 和 voltages。探讨了不同时钟方案对片上系统学的影响，例如非线性串扰、噪声、持久性和光子传输。目标是收敛于 LSSTCam CCD 的最佳配置，从而最大限度地减少由此产生的暗能量科学系统学。