对CERN ATLAS ITk MOPS读出的比较分析：生产与开发设置的可行性研究
A Comparative Analysis of the CERN ATLAS ITk MOPS Readout: A Feasibility Study on Production and Development Setups
AI总结：
本文研究了ATLAS内 tracker (ITk) 相关的MOPS读出系统，通过测试平台和验证方法，评估了两种DCS读出架构的性能，包括Raspberry Pi基的MH Mock-up和FPGA基的MH，以确保其在生产中的可行性。
摘要：
大型强子对撞机（LHC）的高亮度升级需要将ATLAS内探测器替换为新的内跟踪器（ITk）。这一升级对相关的探测器控制系统（DCS）提出了严格要求，该系统负责监控、控制和安全检测器。ITk DCS中的关键组件是像素系统监控（MOPS），负责监督新像素探测器模块的本地电压和温度。本文介绍了一个专门的测试平台和验证方法，定义了两种DCS读出架构的测试案例集：初步的基于Raspberry Pi的控制器，称为“MOPS-Hub Mock-up”（MH Mock-up），以及最终的生产FPGA基“MOPS-Hub”（MH）。该方法指定了用于跨CAN和UART接口的端到端延迟、抖动和数据完整性测量链，包括统一时间戳方案、非侵入式信号采样和一致的数据记录和分析流程。本文详细说明了负载配置和可扩展性场景（基线操作、完整机箱压力和CAN接口卡通道隔离），以及接受标准和测量不确定性考虑，以确保可重复性。目标是为MH架构提供清晰、可重复的程序，以证明其适用于生产并部署在ATLAS ITk DCS中。一篇配套论文将展示使用此测试平台获得的实验结果和比较分析。
英文摘要：
The upcoming High-Luminosity upgrade of the Large Hadron Collider (LHC) necessitates a complete replacement of the ATLAS Inner Detector with the new Inner Tracker (ITk). This upgrade imposes stringent requirements on the associated Detector Control System (DCS), which is responsible for the monitoring, control, and safety of the detector. A critical component of the ITk DCS is the Monitoring of Pixel System (MOPS), which supervises the local voltages and temperatures of the new pixel detector modules. This paper introduces a dedicated testbed and verification methodology for the MOPS readout, defining a structured set of test cases for two DCS-readout architectures: a preliminary Raspberry Pi-based controller, the "MOPS-Hub Mock-up"(MH Mock-up), and the final production FPGA-based "MOPS-Hub" (MH). The methodology specifies the measurement chain for end-to-end latency, jitter, and data integrity across CAN and UART interfaces, including a unified time-stamping scheme, non-intrusive signal taps, and a consistent data-logging and analysis pipeline. This work details the load profiles and scalability scenarios (baseline operation, full-crate stress, and CAN Interface Card channel isolation), together with acceptance criteria and considerations for measurement uncertainty to ensure reproducibility. The objective is to provide a clear, repeatable procedure to qualify the MH architecture for production and deployment in the ATLAS ITk DCS. A companion paper will present the experimental results and the comparative analysis obtained using this testbed.
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