CASCADE, neutron detectors for highest count rates in combination with ASIC/FPGA based readout electronics
CASCADE, neutron detectors for highest count rates in combination with ASIC/FPGA based readout electronics
复制标题
DOI：
10.1016/j.nima.2010.06.278
复制
发表时间：
2011-02-01
影响因子：
1.4
通讯作者：
Schmidt, Christian J.
中科院分区：
文献类型：
--
作者：
Klein, Martin;Schmidt, Christian J.
本文描述的级联探测器系统被设计用于对动态范围、对比度以及背景具有高要求的高强度中子应用。检测器前端是一个混合的，固体转换器气体检测器使用几个气体电子倍增器（GEM）箔作为电荷透明基板携带固体B-10层。然后将这些涂覆的GEM一个接一个地堆叠（“级联”），以累积每层的检测效率，而不会丢失位置信息。GEM箔的使用允许高达10（7）n/cm（2）s的高计数率。薄硼层内定义明确的中子吸收轨迹提供了亚微秒的绝对时间分辨率，这为新的TOF应用打开了大门。因为与He-3相比，96%同位素富集的硼是大量可获得的，所以鉴于世界范围的He-3供应的迫在眉睫的危机，基于B-10转换器的中子探测器技术是He-3的极少数技术替代品之一。使用GEM箔，中子探测瓶颈转移到数据读出电子器件及其带宽。CASCADE探测器采用ASIC电子前端，配以可适应的集成FPGA数据处理单元，以提供高速率容量和实时事件重建。(C)2010 Elsevier B. V.保留所有权利。
The CASCADE detector system described herein is designed for high intensity neutron applications with high demands on the dynamical range, contrast as well as background. The detector front-end is a hybrid, solid converter gas detector using several gas electron multiplier (GEM) foils as charge transparent substrates to carry solid B-10 layers. These coated GEMs are then stacked ("cascaded") one behind the other to cumulate the detection efficiency of every layer without loosing position information. The use of GEM foils allows high count rates up to 10(7) n/cm(2)s. The well-defined neutron absorption locus inside the thin boron layer provides sub-microsecond absolute time resolution, which opens the door towards new TOF applications. Because 96% isotopically enriched boron is available in large quantities in contrast to He-3, B-10-converter based neutron detector technology is one of the-very few technological alternatives to He-3 in view of the imminent crisis in world-wide supply of He-3. Using GEM foils, the neutron detection bottleneck shifts to data read-out electronics and its bandwidth. The CASCADE detector uses an ASIC electronic front-end paired with an adaptable integrated FPGA data processing unit to provide high rate capacity and realtime event reconstruction. (C) 2010 Elsevier B.V. All rights reserved.