• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International Cosmic Ray Conference >The Cluster Control Board of the JEM-EUSO mission
【24h】

The Cluster Control Board of the JEM-EUSO mission

机译：JEM-EUSO任务的集群控制委员会

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The Cluster Control Board (CCB) is one of the key elements of the JEM-EUSO read-out electronics, whichmanages the data received from eight units of the Photo Detector Module (PDM) of JEM-EUSO, performing data selec-tionand transmission. To reduce the large amount of data produced at the detector level and to discriminate the goodExtensive Air Shower (EAS) events from the spurious ones, a hierarchical trigger scheme over two levels has been devel-oped.The first trigger level consists of three sub-levels which are implemented within the front-end Application SpecificIntegrated Circuit (ASIC) and the PDM electronics. The second trigger level is implemented in the CCB electronics.After the onboard processing of the data received from 8 PDMs at a rate of around 57 Hz, potentially good events aretransmitted to the onboard CPU at the level of around 5 mHz. In this paper, we will firstly present the algorithm developedfor the second trigger level, focusing on its implementation in hardware. The algorithm aims at distinguishing the uniquepatterns produced on the focal surface by the EAS from the ones produced by background events. It is based on the scanof a predefined set of directions, which covers the complete parameter space, to find good patterns associated with theEAS. The final set of directions has been carefully optimized to adapt the algorithm to the limited on-board computingpower. To fulfill the requirement on the processing time, the algorithm was implemented in a Field Programmable GateArray in order to make use of its parallel processing capabilities. After presenting the current architecture of the CCB anddiscussing the complex interfaces with the other elements of the read-out electronics, we will report on the performanceof the laboratory model.
机译：群集控制委员会（CCB）是JEM-EUSO的关键要素之一读出电子，whichmanages从八个单元JEM-EUSO的光电检测器模块（PDM）的，执行数据选择素tionand传输接收到的数据。为了减少大量在检测器处产生的电平数据，并以辨别goodExtensive风淋（EAS）从杂散那些事件，经两级的分级触发方案已经devel的-oped.The第一触发电平由三个子的其前端应用SpecificIntegrated电路（ASIC）和PDM电子内实现的水平。第二触发电平在CCB electronics.After实现在大约57赫兹的速率从8级的PDM接收到的数据的机载处理，潜在地好事件在大约5MHz的水平aretransmitted到板载CPU。在本文中，我们将首先介绍算法developedfor第二触发水平，注重它在硬件实现。该算法的目的是区分通过从背景事件产生的那些的EAS焦表面上产生的uniquepatterns。它是基于scanof一组预定义方向，它涵盖了完整的参数空间中，找到与theEAS相关的良好格局。方向的最后一组经过精心优化，以适应的算法来限制板载computingpower。为了满足对处理时间要求，算法现场可编程GateArray开始实施，以利用其并行处理能力。呈现CCB anddiscussing与读出电子学的其他元素的复杂接口目前的结构后，我们将在performanceof的实验室模型报告。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号