发帖
雷达卡
摘要翻译：
欧洲散裂源将是世界上最亮的中子源。它正在瑞典隆德建造。超过120个超导腔将安装在设施中，每个都由独立的LLRF控制系统调节。为了降低在实际腔体上测试系统的风险，设计了腔体模拟器。它再现了ESS直线加速器中、高β段所用超导腔的行为。对大功率射频放大器和压电驱动器的参数进行了仿真。基于射频驱动和压电控制信号，腔体模拟器产生由LLRF控制系统输入获取的射频信号。这用于实时关闭LLRF反馈环路。谐振腔模拟器的射频前端由矢量调制器、下变频电路和一组快速数据转换器组成。腔响应模拟是在高速FPGA逻辑中通过专用固件执行的，该固件经过优化以最小化处理时间。该器件还产生时钟、LO和704.42 MHz参考信号，以便在加速器环境之外进行系统测试。本文给出了腔体模拟器的设计、固件中所用算法的描述和装置的测量结果。
---
英文标题：
《Cavity Simulator for European Spallation Source》
---
作者：
Maciej Grzegrz\'o{\l}ka, Krzysztof Czuba, Mateusz Lipi\'nski and Igor
Rutkowski
---
最新提交年份：
2018
---
分类信息：
一级分类：Physics 物理学
二级分类：Accelerator Physics 加速器物理学
分类描述：Accelerator theory and simulation. Accelerator technology. Accelerator experiments. Beam Physics. Accelerator design and optimization. Advanced accelerator concepts. Radiation sources including synchrotron light sources and free electron lasers. Applications of accelerators.
加速器理论与模拟。加速器技术。加速器实验。光束物理。加速器设计与优化。先进的加速器概念。辐射源包括同步辐射光源和自由电子激光。加速器的应用。
--
一级分类：Electrical Engineering and Systems Science 电气工程与系统科学
二级分类：Signal Processing 信号处理
分类描述：Theory, algorithms, performance analysis and applications of signal and data analysis, including physical modeling, processing, detection and parameter estimation, learning, mining, retrieval, and information extraction. The term "signal" includes speech, audio, sonar, radar, geophysical, physiological, (bio-) medical, image, video, and multimodal natural and man-made signals, including communication signals and data. Topics of interest include: statistical signal processing, spectral estimation and system identification; filter design, adaptive filtering / stochastic learning; (compressive) sampling, sensing, and transform-domain methods including fast algorithms; signal processing for machine learning and machine learning for signal processing applications; in-network and graph signal processing; convex and nonconvex optimization methods for signal processing applications; radar, sonar, and sensor array beamforming and direction finding; communications signal processing; low power, multi-core and system-on-chip signal processing; sensing, communication, analysis and optimization for cyber-physical systems such as power grids and the Internet of Things.
信号和数据分析的理论、算法、性能分析和应用，包括物理建模、处理、检测和参数估计、学习、挖掘、检索和信息提取。“信号”一词包括语音、音频、声纳、雷达、地球物理、生理、（生物）医学、图像、视频和多模态自然和人为信号，包括通信信号和数据。感兴趣的主题包括：统计信号处理、谱估计和系统辨识；滤波器设计；自适应滤波/随机学习；（压缩）采样、传感和变换域方法，包括快速算法；用于机器学习的信号处理和用于信号处理应用的机器学习；网络与图形信号处理；信号处理中的凸和非凸优化方法；雷达、声纳和传感器阵列波束形成和测向；通信信号处理；低功耗、多核、片上系统信号处理；信息物理系统的传感、通信、分析和优化，如电网和物联网。
--
一级分类：Physics 物理学
二级分类：Instrumentation and Detectors 仪器仪表和探测器
分类描述：Instrumentation and Detectors for research in natural science, including optical, molecular, atomic, nuclear and particle physics instrumentation and the associated electronics, services, infrastructure and control equipment.
用于自然科学研究的仪器和探测器，包括光学、分子、原子、核和粒子物理仪器和相关的电子学、服务、基础设施和控制设备。
--
---
英文摘要：
European Spallation Source will be the brightest neutron source in the world. It is being built in Lund, Sweden. Over 120 superconducting cavities will be installed in the facility, each regulated by an individual LLRF control system. To reduce the risk associated with testing the systems on real cavities a Cavity Simulator was designed. It reproduces the behaviour of superconducting cavities used in the medium and high beta sections of ESS's Linac. The high power RF amplifier and piezo actuators parameters are also simulated. Based on the RF drive and piezo control signals the Cavity Simulator generates the RF signals acquired by the inputs of the LLRF control system. This is used to close the LLRF feedback loop in real time. The RF front end of the Cavity Simulator consists of vector modulators, down-converting circuits, and a set of fast data converters. The cavity response simulation is performed in a high speed FPGA logic by a dedicated firmware, that was optimized to minimize the processing time. The device also generates clock, LO, and the 704.42 MHz reference signals to allow for system tests outside of the accelerator environment. In this paper the design of the Cavity Simulator, description of the algorithms used in its firmware, and measurement results of the device are presented.
---
PDF链接：
https://arxiv.org/pdf/1806.09268
京公网安备 11010802022788号
