Speaker
Description
The PandaX project is a series of deep-underground experiments, located at China Jinping Underground Laboratory (CJPL), employing the dual-phase time projection chamber (TPC) technique to search for particle dark matter and to study properties of neutrinos. While the current experiment PandaX-4T is still running, the collaboration is preparing for the next-generation experiment PandaX-xT, designed to operate on a significantly larger scale of about 40 tons of liquid xenon.
In this poster, I will present a completely new readout electronics system for signals of photomultipliers in the TPC in PandaX-4T. This system has been used to acquire physics data since 2024. The new system features custom-designed electronics boards, offering a 500 MHz sampling rate, enhanced triggering capabilities, and synchronized clock distribution system. Compared to the previous system in PandaX-4T, which was built upon commercial electronics boards, the new system has several advantages. First, the sampling rate of the waveform digitizer is doubled. Second, the new system supports both triggerless and external-trigger readout modes. Finally, the new system can be easily scaled up for the next-generation of PandaX experiment.
