Belle II 试验的软件辅助事件生成器

IF 1.9 3区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC IEEE Transactions on Nuclear Science Pub Date : 2024-09-17 DOI:10.1109/TNS.2024.3462595

D. Levit;M. Bessner;D. Biswas;D. Charlet;T. Higuchi;R. Itoh;E. Jules;P. Kapusta;T. Kunigo;Y.-T. Lai;T. S. Lau;M. Nakao;K. Nishimura;S.-H. Park;E. Plaige;H. Purwar;P. Robbe;S. Y. Suzuki;M. Taurigna;G. Varner;S. Yamada;Q.-D. Zhou

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引用次数: 0

摘要

在本文中，我们提出了Belle II DAQ混合事件生成器算法的设计。事件生成器在PCIe40现场可编程门阵列（FPGA）板中实现，每块板最多可读取48个127 MB/s通道。事件构建器的第一个版本完全在FPGA的固件中实现了算法。但由于机载内存有限，对操作条件有硬性限制。新算法在FPGA中对每个通道使用独立的事件处理，并在最终事件构建中使用高度优化的读出软件。这使我们能够在具有20个CPU内核的读出计算机上将系统的吞吐量从600 MB/s提高到7.25 GB/s。自2024年2月以来，我们成功地使用该系统在贝尔II号实验的第二次运行中以高达5.5 kHz的触发率采集数据。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Software-Assisted Event Builder for Belle II Experiment

In this article, we present the design of the hybrid event builder algorithm for Belle II DAQ. The event builder is implemented in PCIe40 field-programmable gate array (FPGA) boards and reads up to 48 127 MB/s channels per board. The first version of the event builder implemented the algorithm entirely in the firmware of the FPGA. But due to limited onboard memories, there are hard limitations on the operation conditions. The new algorithm uses independent event processing for each channel in FPGA and a highly optimized readout software for final event building. This allowed us to increase the throughput of the system from 600 MB/s to 7.25 GB/s on a readout computer with 20 CPU cores. We successfully use the system to take data at trigger rates of up to 5.5 kHz in run 2 of Belle II experiment since February 2024.

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来源期刊

IEEE Transactions on Nuclear Science 工程技术-工程：电子与电气

CiteScore

3.70

自引率

27.80%

发文量

314

审稿时长

6.2 months

期刊介绍： The IEEE Transactions on Nuclear Science is a publication of the IEEE Nuclear and Plasma Sciences Society. It is viewed as the primary source of technical information in many of the areas it covers. As judged by JCR impact factor, TNS consistently ranks in the top five journals in the category of Nuclear Science & Technology. It has one of the higher immediacy indices, indicating that the information it publishes is viewed as timely, and has a relatively long citation half-life, indicating that the published information also is viewed as valuable for a number of years. The IEEE Transactions on Nuclear Science is published bimonthly. Its scope includes all aspects of the theory and application of nuclear science and engineering. It focuses on instrumentation for the detection and measurement of ionizing radiation; particle accelerators and their controls; nuclear medicine and its application; effects of radiation on materials, components, and systems; reactor instrumentation and controls; and measurement of radiation in space.

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