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arXiv 1404.0490physics.ins-dethep-ex
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SND数据采集系统升级

SND data acquisition system upgrade

A. G. Bogdanchikov, V. P. Druzhinin, A. A. Korol, S. V. Koshuba, A. I. Tekutiev, Yu. V. Usov

摘要:

SND探测器的数据采集系统在e+e对撞机VEPP-2000上成功运行了四个数据采集季节(2010-2013年)。目前,对撞机已关闭进行计划重建,预计将使VEPP-2000的亮度和来自SND探测器电子设备的数据流增加10倍。由于目前的数据采集系统实施(电子和计算机部分)没有足够的储备在新的环境中选择事件而不影响质量,因此需要升级系统。在这里,我们报告的主要SND数据采集系统的升级,其中包括开发新的电子数字化和数据传输,数据网络的完全重新设计,DAQ计算机农场处理能力的增加,使事件建设过程的并发。这些措施将使我们能够从最拥挤的检测器子系统并行收集数据流,与当前情况形成对比。我们还想讨论在未来实施全软件触发解决方案的可能性。

英文摘要:

The data acquisition (DAQ) system of the SND detector successfully operated during four data-taking seasons (2010-2013) at the e+e- collider VEPP-2000. Currently the collider is shut down for planned reconstruction, which is expected to increase the VEPP-2000 luminosity and data flow from the SND detector electronics by up to 10 times. Since current DAQ system implementation (electronics and computer part) does not have enough reserve for selection of events in the new environment without compromising quality, there arose the need for the system upgrade. Here we report on the major SND data acquisition system upgrade which includes developing new electronics for digitization and data transfer, complete redesign of the data network, increasing of the DAQ computer farm processing capacity and making the event building process concurrent. These measures will allow us to collect data flow from the most congested detector subsystems in parallel in contrast to the current situation. We would like to discuss also the possibility to implement full software trigger solution in the future.

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