AI 中文总结
锦屏中微子实验对读出电子学要求高,为此研发了高性能读出系统,经测试验证其关键指标满足实验要求,模块化架构可支持全规模探测器,新电子系统满足未来JNE实验技术需求。
AI 中文摘要
锦屏中微子实验(JNE)正在中国锦屏地下实验室二期(CJPL-II)建设,是下一代中微子天文台,需要基于波形的高精度事件重建,对读出电子学有严格要求。为此开发了高性能读出系统,具有1 GSa/s实时采样、14位物理分辨率(有效位数10.6)、64 Gbps总数据吞吐量和确定性零延迟时钟分布架构。新的单机箱64通道系统(PDS1500)通过台架测试和在升级后的JNE-1吨原型探测器上的部署进行了验证,并与商业参考系统对比评估性能。结果表明所有关键指标满足JNE实验要求,模块化架构提供了支持全规模3000通道JNE探测器所需的吞吐量和可扩展性,新开发的电子系统完全满足未来JNE实验的技术要求。
英文摘要
The Jinping Neutrino Experiment (JNE), a next-generation neutrino observatory under construction at the China Jinping Underground Laboratory II (CJPL-II), requires high-precision waveform-based event reconstruction, imposing stringent demands on its readout electronics. To meet these requirements, we have developed a high-performance readout system featuring 1 GSa/s real-time sampling, 14-bit physical resolution with an effective number of bits (ENOB) of 10.6, a total data throughput of 64 Gbps, and a deterministic zero-delay clock distribution architecture. The new single-crate 64-channel system (PDS1500) was validated through bench tests and deployment on the upgraded JNE-1ton prototype detector. Its performance was further evaluated against a commercial reference system. The results demonstrate that all key metrics meet the JNE experimental requirements: zero data loss within a 1000 ns acquisition window, baseline noise reduced to one-third of the reference level, timing drift limited to 0.3 ns across power cycles, and an energy threshold as low as 0.1 MeV, enabling the detection of low-energy solar neutrinos. While the 14-bit physical resolution provides significantly higher waveform fidelity, the overall energy resolution in this test remains dominated by the intrinsic limitations of the JNE-1ton detector, as expected. Furthermore, the modular architecture provides the throughput and scalability required to support the full-scale 3000-channel JNE detector. These results collectively demonstrate that the newly developed electronics system fully satisfies the technical requirements of the future JNE experiment.