SBIR Phase I: High-Sensitive, Multiplexed, Digital Readout for Transition-Edge Sensor Arrays

这个小企业创新研究（SBIR）第一阶段项目提出开发一种灵敏的数字读出系统，具有焦平面数字化，多路复用和数据传输，从大型低温过渡边缘量热计阵列到采用快速单通量量子数字技术的室温电子设备。一组过采样数字转换器将输出传感器信号转换为数字数据，这些数字数据由控制单元处理，控制单元将多个数字化数据流复用到单个输出线路中。第一阶段将涉及系统组件和完整的单像素读出电路的设计和仿真，以及集成原型的布局、制造和实验结果与仿真的比较。在第二阶段，一个完整的数字读出系统的3232过渡边缘量热计阵列将制造。商业应用包括用于药物研究的磁弛豫/剩磁免疫测定系统或用于在量子计算系统中读出多个基于SQUID的量子位。这种读出架构可以很容易地定制，以满足科学（天文学）和工业（半导体微量分析）高分辨率X射线光谱法的速度和灵敏度的应用要求。

This Small Business Innovation Research (SBIR) Phase I project proposes to develop a sensitive digital read-out system with on-focal-plane digitization, multiplexing and data transfer from large arrays of cryogenic transition-edge calorimeters to room-temperature electronics employing rapid single flux quantum digital technology. A set of over-sampling digitizers converts the output sensor signals to digital data that are processed by control units, which multiplex several digitized data streams into a single output line. Phase I will involve the design and simulation of system components and a complete single pixel readout circuit, and the lay out, fabrication and comparison of the experimental results of an integrated prototype to simulations. In Phase II, a complete digital readout system for 3232 transition-edge calorimeter arrays will be fabricated. Commercial applications include magnetic relaxation/remanence immunoassay systems for drug research or for read-out of multiple SQUID-based qubits in a quantum computing system. This readout architecture can be easily tailored to meet the application requirements for speed and sensitivity for scientific (astronomy) and industrial (semiconductor microanalysis) high- resolution x-ray spectrometry.