Entity

Time filter

Source Type


Pan D.-W.,Beijing Nuclear Instrument Factory
Hedianzixue Yu Tance Jishu/Nuclear Electronics and Detection Technology | Year: 2014

This paper introduces a kind of PC-based combined multi-channel γ counter. The γ counter system with 12 independent units is realized by the combination of software and hardware. Meanwhile, the mechanical structure is designed to realize an arbitrary combination function between 4, 6, 8, 10 and 12 units, to adapt to the requirements of users in different number of units. ©, 2014, Atomic Energy Press. All right reserved.


Jia J.-G.,University of South China | Qu G.-P.,University of South China | Yang B.-H.,Beijing Nuclear Instrument Factory
Hedianzixue Yu Tance Jishu/Nuclear Electronics and Detection Technology | Year: 2011

To the features of NaI(Tl) detector, we forth the Peak-seek method of symmetrical zero-area convolution. In order to improve the peak-seek ability of the low background, we have dealt with the data before peak filter. we will identify the nuclides by matching the nuclides Lib, confirm the borderline by first differential, calculate the activity by the net peak area, which would be subtracted of the background by logarithmic method. we get a formula fitting the energy-efficiency and product an application software that analyzing the energy spectrum gathered by ORTECT. As a result, it's best to the Independent characteristic peak, better to the overlapped peaks, and also can decrease the Statistical false peak.


Su X.-S.,University of South China | Xiao D.-T.,University of South China | Yang B.-H.,Beijing Nuclear Instrument Factory
Hedianzixue Yu Tance Jishu/Nuclear Electronics and Detection Technology | Year: 2011

In order to effectively hold the measuring point surroundings condition record information in nuclear fallouts measuring instrument inside, the measurement data has more practical meaning, also facilitate comprehensive analysis and processing. It will have high sensitivity, low interference, easy to install characteristics of temperature and humidity, wind speed sensor and wind-direction sensors, rainfall sensor embedded into to MSP430F169 as the core of the nuclear instruments, realizing the environmental parameters of the acquisition, and in each sensor is introduced based on the theory of, will of communication between the microcontroller and sensor method and software and hardware design to do a detailed explanation. Experiments prove, the text of the design method is feasible, instrument completely can achieve in nuclear detection applications in the field of requirements.


Xu Y.-D.,Northwestern Polytechnical University | Jie W.-Q.,Northwestern Polytechnical University | He Y.-H.,Northwestern Polytechnical University | Zha G.-Q.,Northwestern Polytechnical University | And 2 more authors.
Guangdianzi Jiguang/Journal of Optoelectronics Laser | Year: 2010

γ-ray spectroscopy response for CdZnTe planar detector (10 mm×10 mm×2.5 mm) made by ourself is evaluated using an un-collimated 241Am (59.5 keV) radioactive source at room temperature for 10 h continuously, in which the polarization is not occurred. The γ-ray (59.5 keV) response spectra of the detector are acquired for a long time (1 year), it shows that operation of the detector is stable. A thick CdZnTe capacitive Frisch grid detector (10 mm×5 mm×10 mm) is fabricated in order to approach high collection efficiency for high-energy γ-rays. An excellent energy resolution of 3.65% for 137Cs at 662 keV is obtained without any additional signal processing.


Du X.-G.,Beijing Nuclear Instrument Factory | Wang M.-T.,Beijing Nuclear Instrument Factory
Hedianzixue Yu Tance Jishu/Nuclear Electronics and Detection Technology | Year: 2010

The application of ac servo motor in the In-Core Neutron Flux Instrumentation System is described. The hardware component of ac servo motor control system is different from the dc motor control system. The effect of two control system on the instrumentation system is compared. The ac servo motor control system can improve the accuracy of the motion control, optimize the speed control and increase the reliability.

Discover hidden collaborations