Development of SANS Data Acquisition Using GPIB Interface with WaveMetrics IGOR Programming

摘要

The small angle neutron scattering (SANS) facility in Malaysian Nuclear Agency has been developed since 1995. The data acquisition system of this prototype facility consists of the two-dimensional Position Sensitive Detector (2D-PSD) and neutron monitor as a data grabber, TDC Histogram as a memory processing processor, two units of ORTEC 994 as a counter and timer and a computer as a data acquisition controller via GPIB interfacing protocol. The 2D-PSD used is a He gas-filled proportional neutron detector with 128 X 128 array of x-y multi-wires detector. This paper will describe the development of GPIB interface for data acquisition of the SANS instrument on Window based platform (the data acquisition was developed using GPIB protocol on DOS operating system). The GPIB device interface and graphical user interface (GUI) for this data acquisition is developed using WaveMetrics Igor software.