The trigger and timing system of the Double Chooz experiment
The trigger and timing system of the Double Chooz experiment
复制标题
Double Chooz实验的触发和计时系统
DOI：
10.1088/1748-0221/8/01/t01003
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发表时间：
2012
影响因子：
1.3
通讯作者：
C. Wiebusch
中科院分区：
文献类型：
--
作者：
F. Beissel;A. Cabrera;A. Cucuanes;J. Dawson;D. Kryn;C. Kuhnt;S. Lucht;B. Reinhold;M. Rosenthal;S. Roth;A. Stahl;A. Stuken;C. Wiebusch
现代精密的中微子实验，如双中微子实验，需要一个高效的触发系统，以减少系统的不确定性。根据这一目标设计了双稳实验的触发和定时系统。双脉冲触发系统的基本思想是根据总可见光能量触发多个阈值，并额外触发探测器中有源光电倍增管（PMT）的数量。为此，触发系统持续监控来自探测器中所有PMT的模拟信号。这些PMT信号的幅度分别针对某些PMT的组（组信号）和针对所有PMT（和信号）被求和。通过每个输入通道的两个阈值和和信号的四个阈值来区分组信号。产生的信号由在FPGA中实现的触发逻辑单元处理。除了适当的触发器外，触发系统还为所有后续数据采集系统提供公共时钟信号，以确保双双稳探测器的同步读出。本系统的设计为应用逻辑和设置提供了高度灵活性，使其适用于除双稳态外的其他实验。2011年安装并调试了双触发器和定时系统。本文介绍了触发和定时系统的硬件组成。此外，还介绍了双稳脉冲实验的触发和定时系统的设置、实现的触发逻辑和性能。
Modern precision neutrino experiments like Double Chooz require a highly efficient trigger system in order to reduce systematic uncertainties. The trigger and timing system of the Double Chooz experiment was designed according to this goal. The Double Chooz trigger system is driven by the basic idea of triggering on multiple thresholds according to the total visible energy and additionally triggering on the number of active photomultiplier tubes (PMTs) in the detector. To do so, the trigger system continuously monitors the analogue signals from all PMTs in the detector. The amplitudes of these PMT-signals are summed for groups of certain PMTs (group signals) and for all PMTs (sum signal), respectively. The group signals are discriminated by two thresholds for each input channel and four thresholds for the sum signal. The resulting signals are processed by the trigger logic unit which is implemented in a FPGA. In addition to the proper trigger, the trigger system provides a common clock signal for all subsequent data acquisition systems to guarantee a synchronous readout of the Double Chooz detectors. The present design of the system provides a high flexibility for the applied logic and settings, making it useful for experiments other than Double Chooz. The Double Chooz trigger and timing system was installed and commissioned in 2011. This article describes the hardware of the trigger and timing system. Furthermore the setup, implemented trigger logic and performance of the trigger and timing system for the Double Chooz experiment is presented.
影响因子：
8.6
作者：
An, F. P.;Bai, J. Z.;Zou, J. H.
通讯作者：
Zou, J. H.