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Design and simulation of Gaussian shaping amplifier made only with CMOS FET for FEE of particle detector

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Nuclear science and Techniques 2010年第5期21卷 312-315页

作者： WEMBE TAFO Evariste SU Hong QIAN Yi KONG Jie WANG Tongxi Institute of Modern Physics Chinese Academy of Sciences Lanzhou 730000 China Department of Physics University of Douala Cameroon

The objective of this paper is to design and simulate a shaping amplifier circuit for silicon strip,Si(Li),CdZnTe and CsI detectors,etc.,which can be further integrated the whole system and adopted to develop CMOS-based application,specific integrated circuit for Front End Electronics(FEE) of read-out system of nuclear physics,particle physics and astrophysics research,***'s why we used only CMOS transistor to develop the entire system.A Pseudo-Gaussian shaping amplifier made by fourth-order integration stage and a differentiation stage give a result same as a true CR-RC4 filter,we perform shaping time in the range,465 ns to 2.76μs with a low output resistance and the linearity almost good.

关键词： MOS场效应管探测器放大器设计高斯 CMOS晶体管颗粒成型

A low noise charge sensitive preamplifier with switch control feedback resistance

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Nuclear science and Techniques 2008年第1期19卷 39-44页

作者： WEMBE TAFO Evariste SU Hong PENG Yu WU Ming QIAN Yi Institute of Modern Physics Chinese Academy of Sciences Lanzhou 730000 China Department of Physics University of Douala Cameroon

In this paper, the design and analysis of a new low noise charge sensitive preamplifier for silicon strip, Si(Li), CdZnTe and CsI detectors etc. with switch control feedback resistance were described, the entire system to be built using the CMOS transistors. The circuit configuration of the CSP proposed in this paper can be adopted to develop CMOS-based Application Specific Integrated Circuit further for Front End Electronics of read-out system of nuclear physics, particle physics and astrophysics research, etc. This work is an implemented design that we succeed after a simulation to obtain a rise time less than 3ns, the output resistance less than 94? and the linearity almost good.

关键词：电流放大器粒子探测技术开关反射电阻

Design and simulation of charge sensitive preamplifier with CMOS FET implemented as feedback capacitor C_(fp)

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Nuclear science and Techniques 2008年第4期19卷 241-245页

作者： WEMBE TAFO Evariste SU Hong GAO Yanni WU Ming Institute of Modern Physics Chinese Academy of Sciences Lanzhou 730000 China Department of Physics University of Douala Cameroon

In this paper,to design a new preamplifier for optimum performances with charged-particle or heavy-ion detectors,the CMOS FET is implemented as a feedback capacitor Cfp,so that the entire system should be built only with MOSFET. This work is a revolution design because to realize an ASIC for a preamplifier circuit,the capacitor will also be included. We succeed after a simulation to maintain a rise time less than 3 ns,the output resistance less than 94 ? and the linearity almost good.

关键词：电流放大器粒子探测技术模拟实验放射学

Waveguides Written and Stored by Photovoltaic Dark Spatial Solitons in LiNbO_(3):Fe Crystals

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Chinese Physics Letters 1996年第10期13卷 737-740页

作者： LIU Si-min ZHANG Guequan SUN Qian XU Jing-jun ZHANG Guang-ying TONG Yi-cheng Department of Physics Nankai UniversityTianjin 300071 Department of Physics University of South FloridaTampaFlorida 33620USA

To our knowledge, we have demonstrated for the first time that (2+1)-dimension photorefractive waveguides can be written and stored by light using the (2+1)-dimension photovoltaic dark spatial solitons in LiNbO3:Fe cr... 详细信息

关键词： Crystal dimension Spatial

Photorefractive Spatial Dark-Soliton Stripes in LiNbO_(3):Fe Crystal and Their Application

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Chinese Physics Letters 1996年第2期13卷 101-104页

作者： ZHANG Guo-quan LIU Si-min XU Jing-jun ZHANG Guang-yin SUN Qian Department of Physics Nankai UniversityTianjin 300071

We observed the photorefractive spatial dark-soliton stripes In LiNbO3:Fe crystal,and demonsirate the planar waveguide property of refractive index proiile induced by these spatial dark-soli ton *** suggest a new moth... 详细信息

关键词： technique waveguide Photorefractive

Relations between two types of polarized partitions

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science China Mathematics 1999年第5期42卷 488-495页

作者：张树果 C.A.DiPrisco Department of Mathematics Instituto Venezolano de Investigationes Cientificas

It is shown that close links exist between two important types of polarized partition relations of higher dimensions.

关键词： relation polarized partition relation partition relation.

INVESTIGATION OF POSSIBILITY OF FLOW FIELD DIAGNOSTICS BY LASER INDUCED BIACETYL PHOSPHORESCENCE

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Acta Mechanica Sinica 1987年第4期3卷 370-379页

作者： Liu Jianbang Pan Qi Liu Changsheng Shi Jierong Institute of Mechanics,Chinese academy of sciences Institute of Mechanics Chinese Academy of Sciences China

Experimental results of laser induced phosphorescence of biacetyl triplet3Auin a mixture ofbiacetyl and N2show that:the lifetime of phosphorescence is a function of temperature and independent ofdensity and concentration;the initial phosphorescence intensity is a linear function of density andinsensitive to the variation of *** temperature and density distribution of gas flow could bemeasured by observing the phosphorescence lifetime and initial intensity of biacetyl mixed with *** velocity distribution could be measured by observing the time-of-flight of the gaseousphosphorescent spot under pulsed laser *** with Doppler anemometer,it,to a greatextent,avoids the particle lag problem in flow field with large velocity *** phosphorescence decaymechanism is also analysed and the analytical results agree with experimental ones.

关键词： flow field diagnostics laser spectroscopy photochemistry phosphorescence

Phase Conjugation of Squeezed Light

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Chinese Physics Letters 1993年第4期10卷 220-222页

作者： LI Shiqun WU Ling-An Department of Applied Physics Tsinghua UniversityBeijing 100084 Institute of Physics Academia SinicaBeijing 100080

Phase conjugation in degenerate four-wave mixing with a squeezed input beam is *** show that the phase conjugate mode is always super-Poissonian and never squeezed,but the combination mode may be squeezed to an extent... 详细信息

关键词： wave squeezed conjugate

Spectra of TCNQ molecule in inverse micelle

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Chinese science Bulletin 1995年第9期40卷 729-733页

作者：吴晓春汤国庆王斌邹炳琐张桂兰陈文驹 Institute of Modern Optics Nankai University Tianjin 300071 China

The properties of the TCNQ (7,7,8,8-tetracyanoquinodimethane) molecule, especially theproperties of its charge transfer complex and ion-pair compound with other molecules forelectro-optical switching and optical recording, have attracted much attention since it wasfirst synthesized in 1962. When we prepared combined funtional materials using theTCNQ molecules and nanometer-sized particles in inverse micelle, we found that the inter-

关键词： TCNQ inverse micelle charge transfer complex absorption spectra.