Trigger system using MPI, Python and Fermi GPU

使用 MPI、Python 和 Fermi GPU 的触发系统

• 批准号: 22340066
• 负责人: KATAYAMA Nobuhiko
• 金额: $ 11.56万
• 依托单位: The University of Tokyo (2012-2013)High Energy Accelerator Research Organization (2010-2011)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22340066/
• 关键词: 高エネルギー実験; トリガーシステム; 素粒子実験; データ収集系; ハイレベルトリガー; データ通信エレクトロニクス; データ収集システム; 加速器

The goal of this research is to reduce the information generated by the pixel detector of the Belle II experiment using the information generated by the Silicon Vertex detector. The pixel detector is placed at the closest location from the colliding beams wheres the Silicon Vertex detector, the next closest. The size of the output data from the pixel detector is, without compression or any other means of reduction, about 800KB for each event of a collision of an electron and a positron at the rate of 30 KHz. The total amount of the data is much larger than the amount that the Belle II experiment can record. This we would like to use the information from the four layer Silicon Vertex detector to make the tracking information and estimate which region on the Pixel detector the track has past. Then we can only keep the data in the region where the tracks have passed. The extrapolation must be done quickly so that the decision to keep/throw away is made in time.

本研究的目标是利用硅顶点探测器产生的信息来减少贝儿II实验的像素探测器产生的信息。像素探测器被放置在离碰撞光束最近的位置，硅顶点探测器是下一个最近的。来自像素检测器的输出数据的大小在没有压缩或任何其他减小手段的情况下对于以30 KHz的速率的电子和正电子的碰撞的每个事件是大约800 KB。数据总量远大于贝儿二号实验所能记录的数量。我们希望使用来自四层Silicon Vertex检测器的信息来生成跟踪信息，并估计跟踪经过Pixel检测器上的哪个区域。那么我们只能将数据保留在轨迹经过的区域中。外推必须迅速完成，以便及时做出保留/丢弃的决定。

项目成果

Development of high level trigger software for Belle II at SuperKEKB

SuperKEKB 为 Belle II 开发高级触发软件

• 发表时间: 2011
• 期刊: J.Phys.Conf.Ser
• 作者: S. Lee(Korea U.);R. Itoh;N. Katayama(KEK;Tsukuba);S. Mineo(Tokyo U.)
• 通讯作者: S. Mineo(Tokyo U.)

Data Flow and High Level Trigger of Belle II DAQ System

• DOI: 10.1109/tns.2013.2273091
• 发表时间: 2012-06
• 期刊: IEEE Transactions on Nuclear Science
• 影响因子: 1.8
• 作者: R. Itoh;T. Higuchi;M. Nakao;S. Suzuki;S. Lee

HLT (and other things) with GPU

带有 GPU 的 HLT（和其他东西）

• 发表时间: 2010
• 作者: T. Inoue;N. Ishii;S. Aoki;T. Doi;T. Hatsuda;Y. Ikeda;K. Murano;H. Nemura;K. Sasaki [HAL QCD collaboration];Takashi Shioya;中村隆司;片山伸彦
• 通讯作者: 片山伸彦