A standard electronics plug-in for TDCR based on high speed high resolution ADCs

In this paper, a standard electronic plug-in based on high speed high resolution ADCs is presented, which is developed for the TDCR (Triple-to-Double Coincidence Ratio) coincidence counting system. The main goal of the plug-in is to replace the module MAC3 which is widely used in the TDCR system. It digitalizes the signals of the three PMTs and stores the coincidence signals for later offline analysis. It can be directly connected to a common PC via PCI-e or USB3.0 interface which make it easy to use and have a higher cost efficiency. The plug-in will greatly simplify the TDCR coincidence. The data accuracy is improved which is helpful for the signal shape analysis. In the implementation, we use three channels of 500MSPS 12bit data acquisition. The problems we are focused on are the synchronization between the three channels, the accuracy of the data acquisition, the high speed data transmission and the real time data processing. As a result, this plug-in has a 128M × 40bit data buffer, no dead time coincidence discrimination, and a data transmission capacity of 2.5G ×4 lanes PCI-e or 400MBps USB3.0.