The 100 element neutron detector array facility, National Array of Neutron Detectors (NAND) has been installed at Inter University Accelerator Centre (IUAC), New Delhi for experiments in heavy-ion reaction studies. The detector array consists of 100 organic liquid scintillators, each of size 5”$\times$5” coupled to 5 in. diameter photomultiplier. The liquid cells are mounted at 175 cm from the target with full array covering 3.3% of $4\pi$ solid angle. We present an overview of the design and implementation of various subsystems of the array. Description of the mechanical structure, development of detectors and nuclear electronics for signal processing, data acquisition, characterization of detectors and test results are presented. Results on the performance characteristics of the array are given based on the offline tests using radioactive sources and commissioning test by in-beam experiments. The system demonstrates good $n-\gamma$ discrimination and time-of-flight performance.

具有100个元素的中子探测器阵列设备，即国家中子探测器阵列（NAND），已安装在新德里的国际大学加速器中心（IUAC）中，用于重离子反应研究实验。探测器阵列由100个有机液体闪烁体组成，每个尺寸为5英寸$\times$5英寸耦合到5英寸直径的光电倍增管。液体池安装在距靶标175 cm处，整个阵列覆盖3.3％的$4\pi$立体角。我们对阵列的各个子系统的设计和实现进行了概述。介绍了机械结构的描述，探测器和用于信号处理，数据采集，探测器的表征和测试结果的核电子学的发展。基于使用放射性源的离线测试和通过束内实验进行的调试测试，给出了阵列性能特征的结果。系统显示良好$ñ-\gamma$ 歧视和飞行时间表现。