随着无线网越来越普及,大家对WiFi信号对人体有没有害这个问题有了更多关注。要回答这个问题,我们需要理清下面三个问题:WiFi信号是什么?WiFi信号怎么跟人体起作用?这种作用对人体有害吗?首先,WiFi信号属于电磁波,它其...
BESⅢ量能器总装中CsⅠ(Tl)晶体探测单元的光脉冲检测 CNKI文献
主要介绍BESⅢ量能器总体安装过程中的光脉冲质量检测,对6240个CsⅠ(Tl)晶体探测单元进行了三次光脉冲检测,介绍了量能器上光纤系统在检测晶体探测单元质量上的重要作用,并根据光脉冲测量的不同结果得出了晶体探测单元...
Performances of RETGEM with resistive electrodes made ... CNKI文献
THGEM with resistive Kapton electrodes (RETGEM) has been developed to make the THGEM more tolerant to discharges. At higher gains with resistive electrodes, serious discharges may travel to the strea...
俞伯祥 刘宏邦... 《中国物理C》 2011年12期 期刊
关键词: RETGEM / resistive / electrodes / Kapton
下载(29)| 被引(0)
Attenuation length measurements of a liquid scintillat... CNKI文献
An attenuation length measurement device was constructed using an oscilloscope and LabVIEW for signal acquisition and processing. The performance of the device has been tested in a variety of ways. T...
高龙 俞伯祥... 《Chinese Physics C》 2013年07期 期刊
关键词: attenuation / length / liquid / scintillator
下载(61)| 被引(4)
为满足环形正负电子对撞机项目配置的需要,研制了薄型较大面积THGEM气体探测器。该探测器工作时不需要额外的腔室,并且其厚度能达到8 mm,较原来的11 mm有明显减少。其有效面积为20 cm×20 cm,其增益在Ar/iC_4H_(1...
Preliminary study of light yield dependence on LAB liq... CNKI文献
Liquid scintillator(LS) will be adopted as the detector material in JUNO(Jiangmen Underground Neutrino Observatory). The energy resolution requirement of JUNO is 3%, which has never previously been r...
叶星辰 俞伯祥... 《Chinese Physics C》 2015年09期 期刊
关键词: liquid / scintillator / JUNO / PPO
下载(39)| 被引(4)
Experimental study of a THGEM detector with mini-rims CNKI文献
The gas gain and energy resolution of single and double THGEM detectors (5cm × 5cm effective area) with mini-rims (rim less than 10 μm) were studied. The maximum gain was found to reach 5×...
p/π~+ response of single layer THGEM detector in Ar+3... CNKI文献
In this work, we study the response of a single layer Thick Gaseous Electron Multiplier(THGEM)detector to p/π+at the E3 line of the Beijing Test Beam Facility. The THGEM detector drift gap used in t...
常用的有机闪烁体探测器对中子和γ射线均敏感,所以消除或减弱γ射线在中子探测技术中的影响是必要的。考虑到BP神经网络能实现分类器的功能,因此本文结合脉冲形状甄别技术与BP神经网络,将BP神经网络应用在中子与γ射...
Neutron collimator design of neutron radiography based... CNKI文献
For the research of CCD neutron radiography,a neutron collimator was designed based on the exit of thermal neutron of the Boron Neutron Capture Therapy(BNCT)reactor.Based on the Geant4 simulations,th...
杨晓鹏 俞伯祥... 《Chinese Physics C》 2014年02期 期刊
关键词: neutron / radiography / ICCD / camera
下载(84)| 被引(0)
Temperature dependence of the light yield of the LAB-b... CNKI文献
We studied the temperature dependence of the light yield of linear alkyl benzene(LAB)-based and mesitylene-based liquid scintillators. The light yield increases by 23% for both liquid scintillators w...
夏冬梅 俞伯祥... 《Chinese Physics C》 2014年11期 期刊
关键词: liquid / scintillator / reactor / neutrino
下载(30)| 被引(1)
Aging of LAB-based liquid scintillator in stainless st... CNKI文献
Types 316 and 304 stainless steel are two candidates for the storage vessels and piping systems of LABbased liquid scintillator(LS) in the JUNO experiment. LS aging experiments are carried out at tem...
陈海涛 俞伯祥... 《Chinese Physics C》 2015年06期 期刊
关键词: JUNO / liquid / scintillator / aging
下载(36)| 被引(0)
Measurement of the liquid scintillator nonlinear energ... CNKI文献
Nonlinearity of the liquid scintillator energy response is a key to measuring the neutrino energy spectrum in reactor neutrino experiments such as Daya Bay and JUNO. We measured the nonlinearity of t...
章飞虹 俞伯祥... 《Chinese Physics C》 2015年01期 期刊
关键词: liquid / scintillator / nonlinearity / Compton
下载(24)| 被引(0)
为满足环形正负电子对撞机项目的需求,研究了基于国产SiPM的强子量能器探测单元。该探测单元由ESR反射膜包裹塑料闪烁体组成。实验测试表明:该探测单元的均匀性与MC模拟基本一致。均匀性为在平均值10%的偏差内的区域能...
利用ICCD定位宇宙线来测量探测器时间分辨的方法研究 CNKI文献
本研究采用双层150 mm×150 mm闪烁条阵列定位宇宙线的入射和出射位置.阵列信号光使用波移光纤吸收传输,在ICCD相机前插入前置像增强器,使信号光延迟大于200 ns,使ICCD可以由外部高速触发信号控制,有效记录随机触...
江门中微子实验将以LAB为溶剂、PPO为主要发光物质、bis‐MSB为波长位移剂制成液体闪烁体(LS)。为确定PPO和bis-MSB的浓度对液闪光学性能影响,本文通过对加只PPO的液闪和同时加PPO与bis-MSB的液闪的光透过率,测量液闪...
本文主要描述了硼中子治癌反应堆装置的中子照相用热中子孔道设计。为了研究CCD中子照相的原理与方法,在硼中子治癌反应堆装置已有的热中子出口的基础上,设计了一个适用于中子照相的热中子孔道。用Geant4蒙特卡洛程序...
利用北京谱仪III上的干燥系统提供的干空气,整合小型温湿度一体探头、智能采集模块、开关量控制模块和普通气体电磁阀,基于LabVIEW图形化编程环境开发了一套多路湿度控制系统。此系统可同时实现多个不同湿度小环境的实...
利用MaxWELL和Garfield进行了厚GEM的2D和镀CsI厚GEM的3D模拟,研究了电场分布和光入孔效率与厚GEM孔径、孔间距、厚度,以及绝缘环rim大小的关系,进而对厚GEM的几何结构进行了优化。基于优化后的参数制作了双层厚GEM并...