摘要：聚环氧乙烷(PEO)聚合物电解质有望应用于全固态锂金属电池.然而,目前还没有提出有效的方法制备全固态PEO电解质,以克服其在室温下无法使用的局限性.在本研究中,我们基于聚合物C-H键功能化策略,通过在聚合物链上直接共价连接具有锂配位活性的丁二腈官能团,设计出了一种高离子导电性PEO电解质.该官能团有效增强了PEO链的无序性和流动性,同时也作为链间快速离子传导的活性位点,从而实现了离子周围自由体积和迁移行为的双重优化.得益于官能团对离子输运的精准调节,新型电解质表现出更强的离子传导性(离子电导率提升100倍)、更高的转移数(tLi+=0.51)和更宽的电化学窗口(>0.47 V).特别是功能化的PEO300k电解质具有超高室温离子电导率(25℃时为1.01×10^(-4)S cm^(-1))并且能够在室温下稳定工作,该研究为开发具有实际应用价值的聚合物电解质提供了新的途径.

摘要：For modern particle physics experiments,trigger-less data acquisition(DAQ) system has been put into practice because of the need of reaction multiplicity and trigger *** such new DAQ systems,global synchronized clock plays an important role because it affects the granularity of time slice and precision of reference *** this paper,a novel synchronized clock distribution method is *** the help of modulation technique,master clock module distributes system clock to each slave *** synchronize slave clocks,the propagation delay is adjusted and the clock phase is aligned by an FPGA chip ***,an ADCbased method is proposed to evaluate the performance of multi-module clock synchronization *** experiments of a prototype system show that slave clocks can be synchronized less than 100 ps over 150 m *** proposed method is simple and flexible,and it can be used in trigger-less DAQ system and other applications of clock distribution preciously.

摘要：In this paper,a general method of data transmission system design on PXI platform is *** can be used in readout system design for physical *** aims at providing reusable and general interfaces for customized design of PXI while maintaining the transmission *** has three main features:(1)universal logic hardware interface,(2)ethernet based socket software interface,and(3)specific and simple data transmission *** transmission on PXI bus can be realized with the said two universal interfaces coordinated by this specific *** shows that this method is feasible and *** method can be easily reused in readout system designs for different experiments.

摘要：The Gamma Ray Array Detector （GRAD） is one subsystem of HIRFL-ETF （the External Target Facility （ETF） of the Heavy Ion Research Facility in Lanzhou （HIRFL））. It is capable of measuring the energy of gamma-rays with 1024 CsI scintillators in in-beam nuclear experiments. The GRAD trigger should select the valid events and reject the data from the scintillators which are not hit by the gamma-ray. The GRAD trigger has been developed based on the Field Programmable Gate Array （FPGAs） and PXI interface. It makes prompt trigger decisions to select valid events by processing the hit signals from the 1024 CsI scintillators. According to the physical requirements, the GRAD trigger module supplies 12-bit trigger information for the global trigger system of ETF and supplies a trigger signal for data acquisition （DAQ） system of GRAD. In addition, the GRAD trigger generates trigger data that are packed and transmitted to the host computer via PXI bus to be saved for off-line analysis. The trigger processing is implemented in the front-end electronics of GRAD and one FPGA of the GRAD trigger module. The logic of PXI transmission and reconfiguration is implemented in another FPGA of the GRAD trigger module. During the gamma-ray experiments, the GRAD trigger performs reliably and efficiently. The function of GRAD trigger is capable of satisfying the physical requirements.

摘要：A prototype of large-area position sensitive neutron detector was designed and constructed according to the requirements of the Small-Angle Scattering spectrometer of China Spallation Neutron Source(CSNS).The detector was based on the 3He neutron convertor and MWPC with an effective area of 650 mm×650 mm.A prototype was completed and tested with 55Fe *** high-pressure vessel was designed and constructed with high-strength aluminum alloy.A position resolution of about 4.6mm×2.3 mm(FWHM)and efficiency>65%for neutrons with wavelength of 1.8?was determined after the operational gas filled.

摘要：An all-transistor active-inductor shunt-peaking structure has been used in a prototype of 8 Gbps high- speed VCSEL driver which is designed for the optical link in ATLAS liquid Argon calorimeter upgrade. The VCSEL driver is fabricated in a commercial 0.25 p^m Silicon-on-Sapphire （SOS） CMOS process for radiation tolerant purpose. The all-transistor active-inductor shunt-peaking is used to overcome the bandwidth limitation from the CMOS pro- cess. The peaking structure has the same peaking effect as the passive one, but takes a small area, does not need linear resistors and can overcome the process variation by adjust the peaking strength via an external control. The design has been taped out, and the prototype has been proven by the preliminary electrical test results and bit error ratio test results. The driver achieves 8 Gbps data rate as simulated with the peaking. We present the all-transistor active-inductor shunt-peaking structure, simulation and test results in this paper.

摘要：We develop an improved design of thin gap chamber （TGC） simulation signal source. To further simulate the feature of TGC detector, a novel thought is proposed. The TGC source has 256 channels. Every channel can randomly output the signal in 25 ns. The design is based on true random number generator （TRNG）. Considering the electrical connection between the TGC source and the developing trigger electronics, the GFZ connector is used. The experimental results show that the improved TGC simulation signal source can uniformly output the random signal in every channel. The output noise is less than 3 mVrms.

摘要：The ASIC is widely used in the field of high energy physics. Astroparticle experiments benefit from high integration, smallsize and low power consumption. In this paper an analog chip named ARCHGARD (Analog Readout Chip for High energyGamma Ray Detector) for high energy physics experiment is introduced. ARCHGARD is a readout chip, in chartered 0.35 mSiGe technology, for photomultipliers (PMT) array readout. The chip is designed for the Large High Altitude Air Shower Ob-servatory (LHAASO) project. The ASIC integrates 16 independent and auto-triggered channels with variable gain and variableshaping time. It provides analog output for charge measurement, which is performed from 1 up to 3000 photo-electrons (p.e.).The integral nonlinearity of the whole input range is less than 1% and the equivalent input noise is less than 1/10 p.e. Eachchannel has a trigger output for time measurement.

摘要：In this paper a fast digital real-time spectrometer was developed for timing and analysis of nuclear pulse *** hardware system design and algorithm implementation with field-programming gate array(FPGA) and digital signal processor(DSP) were *** performance of the digital constant fraction discrimination(dCFD) platform was experimentally tested with Agilent 80 MHz function/arbitrary waveform generator and LaCl 3:Ce 3+ scintillator detector for 22 Na positron annihilation gamma *** amplitude and time information of photon was online *** energy resolution could be 5.525% and the timing resolution 293.75 ps,the system error estimation of dCFD approach was also *** results showed that this spectrometer achieved a timing resolution close to that of traditional CFD timing resolution with a more simplified system structure.

摘要：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, the preliminary choice of the size of the collimator was determined. The materials were selected according to the literature data. Then, a collimator was constructed and tested on site. The results of experiment and simulation show that the thermal neutron flux at the end of the neutron collimator is greater than 1.0×10^6n/cm^2/s, the maximum collimation ratio（L/D） is 58, the Cd-ratio（Mn） is 160 and the diameter of collimator end is 10 cm. This neutron collimator is considered to be applicable for neutron radiography.