A system of detection and data acquisition for time-of-flight neutron diffraction setups

被引：2

作者：

Marin, V. N. ^{[1
]}

Potashev, S. I. ^{[1
]}

Trunov, D. N. ^{[1
]}

Potashev, A. S. ^{[2
]}

Aksenov, S. N. ^{[1
]}

Afonin, A. A. ^{[1
]}

Litvin, V. S. ^{[1
]}

Alexeev, A. A. ^{[1
]}

Kononykhin, A. S. ^{[1
]}

Sadykov, R. A. ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Nucl Res, Moscow 117312, Russia

[2] State Univ, Moscow Inst Phys & Technol, Dolgoprudnyi 141700, Moscow Oblast, Russia

来源：

INSTRUMENTS AND EXPERIMENTAL TECHNIQUES | 2014年 / 57卷 / 06期

关键词：

Signal processing - Data acquisition - Light amplifiers - Computer operating systems - Frequency converters - Neutron diffraction - Neutrons;

D O I：

10.1134/S0020441214050169

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A simple system of neutron detection and data acquisition is considered. It is composed of sector sets of He-3 counters, timing amplifiers-discriminators, 8-stop time-to-digital converters (TDCs), and a gate duration generator, as well as branch and crate controllers coupled to a computer. The system is used in neutron diffraction setups on the neutron spallation source at the Institute for Nuclear Research. The output pulse from the timing amplifier-discriminator is timed with the fast electron component of an avalanche in the detector. Neutron time-of-flight spectra are formed by a TDC in its embedded memory over the recording enable time ranging from 1 to 63 ms. The TDC time range has 4096 gradations with time step of 0.125-128 mu s. Fast data acquisition is ensured by the Linux kernel driver. The data acquisition software based on the Qt4 library recognizes modules in the CAMAC crate and displays spectra with their preliminary processing.

引用

页码：684 / 687

页数：4

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