TTC distribution for LHC detectors
TTC distribution for LHC detectors
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LHC 探测器的 TTC 分布
DOI：
10.1109/nssmic.1997.672514
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发表时间：
1997
期刊：
影响因子：
--
通讯作者：
Bruce G. Taylor
中科院分区：
文献类型：
--
作者：
Bruce G. Taylor
在每个CERN LHC实验中，时机，触发器和控制（TTC）信号必须从中央触发器处理器附近的单个位置分配给众多电子系统。已经开发了一个多通道光学分配系统，可以通过不受控制的路径长度从几个相对较高的功率激光源向数千个目的地广播信号。该系统通过相应的束和事件编号提供LHC时正式参考和第一级触发决策。它结合了设施，以补偿粒子飞行时间和检测器，电子和传播延迟。此外，它还提供了同步的广播命令以及单独填充的控件和参数（例如通道掩码和校准数据）的同时传输。
At each of the CERN LHC experiments, timing, trigger and control (TTC) signals must be distributed to numerous electronic systems from a single location in the vicinity of the central trigger processor. A multichannel optical distribution system has been developed which can broadcast the signals to several thousand destinations from a few relatively high power laser sources over a passive optical fiber network with uncontrolled path lengths. The system delivers the LHC timing reference and first-level trigger decisions with the corresponding bunch and event numbers. It incorporates facilities to compensate for particle flight times and detector, electronics and propagation delays. In addition it provides for the simultaneous transmission of synchronized broadcast commands and individually-addressed controls and parameters, such as channel masks and calibration data.