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| 1 | 5-4 A Normal-pressure MWPC Detector for Position Measurement of Intermediate and High Energy Radioactive Ions at RIBLL2显示文摘A normal-pressure MWPC detector for position measurement of intermediate and high energy radioactive ionsat RIBLL2 has been fabricated, which has a sensitive area of 75 mm100 mm and contains of three wire planes.Fig. 1 shows the layout of the MWPC wire planes.The anode plane is sandwiched between two cathodeplanes, and the anode-cathode spacing is 4 mm. Theanode plane consisted of 15 m gold-plated tungstenwires with a pitch of 2 mm. The cathode planes Xand Y , made of 60 m stainless steel wires with apitch of 0.5 mm, and every adjacent four wires are sol-dered together to form one readout strip of 2 mm inwidth. The wire directions in X and Y are orthogonalto each other, the wire direction in anode is parallel tothe wire direction in Y . | Hu Rongjiang Zheng Yong Duan Limin Lu Chengui Yang Herun Zhang Junwei Guan Yuanfan | 2014 | IMP & HIRFL Annual Report2014，，1： | 0 |
| 2 | Fusion Studies with Low-intensity Beams Using the Active Target Time Projection Chamber显示文摘Fusion reactions play a very important role for the creation of heavier elements in the quiescent and explosive burning phases in stars.Fusion processes also generate the energy in the Sun that created and maintain life in our earth[1]. | Zhang Ningtao Zhang Zhichao Zhang Jinlong Tang Xiaodong Lu Chengui Gao Bingshui Li Yutian Li Kuoang Pu Tianlei Ru Longhui Wang Xinyu Xu Xiaodong Cai Ziwei Li Qite Ji Binfei Xu Jinyan | 2019 | IMP & HIRFL Annual Report2019，，1： | 0 |
| 3 | One-proton Knockout from ^(16)C at around 240 MeV/u显示文摘One-nucleon knockout reactions have been used to get spectroscopic factor information of unstable nuclei for decadesl[1-4],and a systematic analysis of experiment for intermediate energies of around 80 MeV/u knockout reactions based on the eikonal model indicates a strong isospin asymmetry dependence of the reduction of the extracted spectroscopic strength relative to the shell-model predictionsl[2,3]. | Zhao Yixuan Sun Yazhou Wang Shitao Sun Zhiyu Zhang Xueheng Yan Duo Pang Danyang Ma Peng Yu Yuhong Yue Ke Tang Shuwen Wang Shaoming Fang Fang Sun Yu Cheng Zehui Liu Xiangman Yang Herun Lu Chengui Duan Limin | 2019 | IMP & HIRFL Annual Report2019，，1： | 0 |
| 4 | 近代物理研究所活性靶时间投影室的研究进展显示文摘New and next generation RIB facilities provide new insight into the nuclear structure and reaction dynamics of exotic nuclei.However,many of the most interesting species are always produced with very low intensities.Active target Time Projection Chamber[1,2](AT-TPC)is one powerful device with several significant features,including 4πacceptance of the reaction products,full detection efficiency and high sensitivity,and an event-byevent reconstruction in three dimensions[3].This enables the use of TPC to break through beam limitation and study nuclei very far away from stability.One novel TPC is being developed in a collaboration at IMP.Our primary goal is to study astrophysically important fusion reactions[4]and key(;p)reactions in the X-ray bursts[5]. | Zhang Zhichao Lu Chengui Zhang Ningtao Zhang Jinlong Tang Xiaodong Pu Tianlei Qian Yi Zhao Hongyun | 2018 | IMP & HIRFL Annual Report2018，，1： | 0 |
| 5 | 外靶终端带电粒子鉴别探测器系统显示文摘Situated at the middle of the second Radioactive Ion Beam Line in Lanzhou(RIBLL2),the External Target Facility(ETF)has been constructed for reaction studies with high-energy secondary beams of several hundred MeV/u.The charged fragment detector system of ETF consists of a dipole magnet,tracking drift chambers,ionization chambers and plastic scintillators for particle identification via B-ΔE-TOF method.After more than ten years of R&D on detectors,electronics,data acquisition system and data analysis framework,the charged fragment detector system of ETF has completed its test runs and ready to produce scientific data。 | Sun Yazhou Sun Zhiyu Wang Shitao Zhang Xueheng Sun Yu Yan Duo Tang Shuwen Yu Yuhong Yue Ke Duan Limin Yang Herun Lu Chengui Fang Fang Ma Peng Su Hong | 2018 | IMP & HIRFL Annual Report2018，，1： | 0 |
| 6 | GEM-TPC探测器的研究进展显示文摘Time Projection Chamber(TPC)was developed by D.R.Nygren in 1974[1],which is a gas-filled detector capable of providing three-dimensional tracking information.The electron-ion pairs are created when the incident ions pass through the gas.Under the action of the electric field,the electrons will be accelerated towards the anode.The induced charges from the segmented readout pad can give us the two-dimensional trajectories on the anode plane.Meanwhile,the relative drift time of the electrons provides the information of the third dimension.With the projection and the relative drift time of the electrons,we can reconstruct the 3D track of the original charged particles in the gas detector[2]. | Zhang Zhichao Lu Chengui Tang Xiaodong Zhang Ningtao Lin Weiping Ma Shaobo | 2017 | IMP & HIRFL Annual Report2017，，1： | 0 |
| 7 | 一种用于快中子探测的裂变PPAC显示文摘A Fission-Parallel Plate Avalanche Counter(Fission-PPAC)has been developed for fast neutron measurements[1].The detector consists two sets of PPAC,where a ^(238)U(U_(3)O_(8))coating is put in the second set of PPAC as show in Fig.1(a)and physical map show in Fig.1(b).^(252)Cf source emits an spontaneous fission fragment and a neutron,the neutron passes through PPAC 1 and may be detected by PPAC 2 with a ^(238)U(U_(3)O_(8))coating.The total thickness of ^(238)U(U_(3)O_(8))is 600g/cm^(2),while the detection efficiency attain 8×10^(7). | Guan Yuanfan Yang Herun Duan Limin Hu Rongjiang Lu Chengui Wei Xianglun Li Meng | 2018 | IMP & HIRFL Annual Report2018，，1： | 0 |
| 8 | 2-15 16O+40Ar Experiment Using TPC at RIBLL1显示文摘It has been proposed that fusion reactions between neutron-rich light nuclei,for example 24C,24O and 28Ne,may contribute to achieving the ignition temperature for explosive carbon burning process during superbusrsts[1,2].Studies of fusion reactions involving neutron-rich nuclei are beyond ordinary experimental techniques,since the intensity of radioactive beam become low for these measurements[3].The active target technique using TPC(Time Projection Chamber),with properties of multi-sampling,high efficiency and low background,is a suitable solution to the problem. | Zhang Ningtao Lu Chengui Ji Liancheng Chen Han Chen Zhijun Hu Jun Li Kuoang Ma Shaobo Ru Longhui Tang Xiaodong Xu Shiwei | 2016 | IMP & HIRFL Annual Report2016，，1： | 0 |
| 9 | Ion Pulse Ionization Chamber for Online Measurements of the Radon Activity Concentration显示文摘Radon and its decay daughters are one of the main sources of natural radiation to humans and the second leading cause of lung cancer after smoking[1].In this paper,a new multi-wire impulse ionization chamber type intended for continuous airborne radon activity measurements is described. | Qiu Tianli Wei Xianglun Li Meng Yang Herun Ma Peng Lu Chengui Duan Limin | 2019 | IMP & HIRFL Annual Report2019，，1： | 0 |
| 10 | Development of CEE-TPC Small Principle Prototype显示文摘CEE(CSR External-target Experiment)will be the first large-scale nuclear physics experiment device running in GeV energy region based on the domestic nuclear physics big scientific device HIRFL-CSR. | Wei Xianglun Qiu Tianli Li Meng Ma Peng Yang Herun Lu Chengui Hu Rongjiang Duan Limin | 2019 | IMP & HIRFL Annual Report2019，，1： | 0 |
| 11 | Measurement of fast neutrons with ^(238)U-coated fission chamber显示文摘Purpose Afission chamber with two layers of 238Ufissile materials has been developed for the measurements of fast neutrons.Methods The developed fission chamber has been tested by 60Co gamma source and 252Cf neutron source.Results The results have indicated that it is very easy to cut off the gamma rays from the neutrons by using a discriminator,when the fission chamber works in the pulse mode.The detector works well,even if the static air is used as the filling gas.Conclusion To discuss the application of the detector,Monte Carlo simulations have been performed by considering four 238U-coated fission chambers located outside the spallation target for the fast neutron measurement from spallation reaction.The simulation results have indicated that the detector can be used to measure the fast neutron flux and neutron flux ratio of four fission chambers.Furthermore,a 238U-coated fission chamber can be used within a reactor for longer time,in comparison with a 235U-coated fission chamber. | Yuanfan Guan Herun Yang Limin Duan Junwei Zhang Xiaohua Yuan Zhiyong He Xueying Zhang Rongjian Hu Chengui Lu Peng Ma Xianglun Wei Meng Li Zaiguo Gan Chunli Yang Hongbin Zhang Liang Chen | 2019 | Radiation Detection Technology and Methods2019，3，3： | 0 |
| 12 | 5-10 Position Response of a LC Delay-line MWPC Detector显示文摘A position-sensitive MWPC detector based on LC delay-line readout has been developed for precise position measurement for experimental studies of nuclear physics.The detector consists of six electrode wire planes,which is placed in a gas chamber with a sensitive area of 100 mm×80 mm.Fig.1 shows a schematic drawing with the disposition of the six wire planes.This structure has two anode planes,each is sandwiched between two cathode planes,and the anode-cathode spacing is 4 mm.The anode plane,consist of 15 m gold-plated tungsten wires with a pitch of 3 mm.The two cathode pairs are positioned in such a way that the wires are perpendicular to each other in order to give positions at X and Y directions.The cathode planes in each pair are parallel each other in the orientation of the wires,which are made of 30 m stainless steel wires with a pitch of 0.5 mm. | Hu Rongjiang Zheng Yong Duan Limin Lu Chengui Yang Herun Zhang Junwei Guan Yuanfan | 2016 | IMP & HIRFL Annual Report2016，，1： | 0 |
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