CASCADE, neutron detectors for highest count rates of cold and ultra-cold neutrons in combination with fast self-triggering readout electronics

现代冷中子源和超冷中子源（UCN）上的新的基础物理实验计划是基于千倍的瞬时中子通量，这是达到预期的高精度所必需的。在中子寿命实验和寻找中子电偶极矩（EDM）等实验中，如果UCN的存储量超过108，则需要在几秒钟内对从阱中释放的UCN进行计数。到目前为止，还没有检测器可用于如此高的计数率。模块化CASCADE探测器系统是为这种对动态范围、对比度和本底有高要求的高强度中子应用而设计的。该系统是基于概念创新的探测器设置，这已经证明了其高速率的能力，也在其他领域的高能物理。它只受到目前可用的读出电子带宽的限制。该应用研究项目的目标是开发一种适用于计划中的PERC仪器的束流监测探测器和一种适用于超冷中子实验的位置敏感探测器，该探测器基于一种新的数据采集系统，其速度快10倍以上，能够处理高达100 MHz的探测速率。

The new projected fundamental physics experiments at modern cold and ultracold neutron(UCN) sources are based on a thousand-fold higher instantaneous neutron flux, which isessential to reach the prospected high precision. Experiments like the neutron lifetimeexperiment and the search for a neutron electric dipole moment (EDM) with more thanprojected 108 UCN stored require the counting of UCN released from the traps within a fewseconds only. Up today no detector for such high-count rates is available. The modularCASCADE detector system is designed for such high intensity neutron applications with highdemands on the dynamical range, contrast as well as background. The system is based on aconceptually innovative detector setup, which has proven its high rate capability also in otherfields as the high-energy physics. It is only limited by the bandwidth of readout electronicsavailable up today. Goal of this applied research project is the development of a beam monitor detector adaptedto the planned PERC instrument and a position sensitive detector adapted to the experiments with ultracold neutrons based on a new data acquisition system, which is morethan 10 times faster to be able to process detection rates up to 100 MHz.