面向先进光源线站等大科学装置的低温X射线能谱仪原理及应用进展

图 9  复用SQUID的原理图. 左上图为TDM-SQUID, 通过控制超导开关来决定读取哪一通道. 右上图为CDM-SQUID, 通过控制超导开关和后期反编码实现所有通道同时读取. 左下图为FDM-SQUID, 通过频谱移动区分和鉴别不同像素TES的信号. 右下图是RF-SQUID, 通过微波频段的频谱移动鉴别不同像素的信号

Fig. 9.  Schematic diagram of multiplexed SQUID. The picture on the top left shows that TDM-SQUID, decides which channel to read by controlling the superconducting switch. The picture on the top right shows that CDM-SQUID, can read all channels at the same time by controlling the superconducting switch and post-reverse coding. The image below on the left shows that FDM-SQUID, distinguishes and discriminates the signals of different TES pixel through spectrum shift. The image below on the right shows RF-SQUID, distinguishes different pixels by the frequency spectrum shifting of the microwave band.