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Wang B.,State Key Laboratory of Intense Pulsed Radiation Simulation and Effect | Wang B.,Tsinghua University | Zheng S.,Tsinghua University | Wu L.,Tsinghua University | And 5 more authors.
Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment | Year: 2016

A fiducialization method based on vibrating wire is described dedicated to the problem of locating the magnetic center relative to external fiducials for the small-aperture quadrupoles. The advantage of this method is that the measurement of the wire position, which may be the main error source, is no longer needed. The position of the magnetic center can be directly obtained by measuring the position shift of the magnet fiducials. This method has been validated on small Permanent Magnet Quadrupoles (PMQs). Experiments have confirmed its feasibility of measuring PMQs with good repeatability of about 10 μm, and shown its high sensitivity as well as convenience. © 2015 Elsevier B.V. All rights reserved. Source


Zhu X.,State Key Laboratory of Intense Pulsed Radiation Simulation and Effect | Wang J.,State Key Laboratory of Intense Pulsed Radiation Simulation and Effect | Wang J.,Xian Jiaotong University | Zhang G.,State Key Laboratory of Intense Pulsed Radiation Simulation and Effect | Chen W.,State Key Laboratory of Intense Pulsed Radiation Simulation and Effect
Progress in Electromagnetics Research Symposium | Year: 2014

Parallelized finite-difference time-domain (FDTD) method for simulating the near-fields of flat-plate bounded wave electromagnetic pulse (EMP) simulator with distributed terminator and plane source is presented. The effect of some simulator's model-parameters to the vertical electric fields of the test points at the half-height in the simulator is simulated and analyzed. Source


Ruibin L.,State Key Laboratory of Intense Pulsed Radiation Simulation and Effect | Qiang M.,State Key Laboratory of Intense Pulsed Radiation Simulation and Effect | Chao Q.,State Key Laboratory of Intense Pulsed Radiation Simulation and Effect | Guizhen W.,State Key Laboratory of Intense Pulsed Radiation Simulation and Effect | And 2 more authors.
IPAC 2013: Proceedings of the 4th International Particle Accelerator Conference | Year: 2013

"QiangGuang-I", working at short pulse state, can be used to research the transient radiation effects on electronic devices. The measurement of dose rate is significant for assessing devices' radiation-resistant ability. This paper comprehensively analyzes the originations of uncertainty on dose rate's measurement, such as thermoluminescent dosemeter's linearity degree and response to X-rays energy spectrum, testing instruments' resolution, waveforms' transmission distortion , and positional error; figures out the extended uncertainty. The result shows that the extended uncertainty of dose rate's measurement is less than 20%, which is satisfactory for researching on devices' transient radiation effects, and proves that the method used to measure dose rate is reasonable. Source


Luo J.-H.,Northwest Institute of Nuclear Technology | Luo J.-H.,State Key Laboratory of Intense Pulsed Radiation Simulation and Effect | Hei D.-W.,Northwest Institute of Nuclear Technology | Hei D.-W.,State Key Laboratory of Intense Pulsed Radiation Simulation and Effect | And 3 more authors.
Hedianzixue Yu Tance Jishu/Nuclear Electronics and Detection Technology | Year: 2014

The X-ray energy response of home-mad LiF(Mg, Cu, P) thermo-luminescence dosimeters (TLDs) was studied in this paper. The radiation dosimeter PTW UNIDOS is applied in the experiments. The dose response experiment was carried out under the irradiation of 60Co source (1.25 MeV), the discrete semi-mono-energetic X-rays(20~70 keV) was established by X-ray exciting fluorescence. The results indicate that the home-mad LiF(Mg, Cu, P) can meet the dose measurement requirements in the energy range of 20 keV to 70 keV because of its smooth energy response. ©, 2014, Atomic Energy Press. All right reserved. Source


Liu L.,Northwest Institute of Nuclear Technology | Li B.,Northwest Institute of Nuclear Technology | Li B.,State Key Laboratory of Intense Pulsed Radiation Simulation and Effect | Yang S.,Northwest Institute of Nuclear Technology | And 4 more authors.
Guangxue Jishu/Optical Technique | Year: 2015

Active imaging based on laser illuminating is a comprehensive technology, which integrates laser technology, imaging technology and imaging processing technology of faint target. The principle of laser active imaging and the influence of the medium's scattering effect on imaging quality in the environment of highly scattering medium are described. Also the main methods presently to reduce the influence of scattered light are detailed expounded, and the characteristics and application areas of various imaging methods are analyzed. Finally the development trend of laser active imaging technology in highly scattering medium is discussed. ©, 2014, Editorial Board of Optical Technique. All right reserved. Source

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