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5-10 Position Response of a LC Delay-line MWPC Detector

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IMP & HIRFL Annual Report 2016年第1期 216-217页

作者： Hu Rongjiang Zheng Yong Duan Limin lu chengui Yang Herun Zhang Junwei Guan Yuanfan 不详

A position-sensitive MWPC detector based on LC delay-line readout has been developed for precise position measurement for experimental studies of nuclear *** detector consists of six electrode wire planes,which is placed in a gas chamber with a sensitive area of 100 mm×80 ***.1 shows a schematic drawing with the disposition of the six wire *** structure has two anode planes,each is sandwiched between two cathode planes,and the anode-cathode spacing is 4 *** anode plane,consist of 15 m gold-plated tungsten wires with a pitch of 3 *** 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 *** 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.

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A Fission-PPAC for Fast Neutron Detection

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IMP & HIRFL Annual Report 2018年第1期 194-195页

作者： Guan Yuanfan Yang Herun Duan Limin Hu Rongjiang lu chengui Wei Xianglun Li Meng 不详

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))*** total thickness of ^(238)U(U_(3)O_(8))is 600g/cm^(2),while the detection efficiency attain 8×10^(7).

关键词： attain U3O8

Development of AT-TPC at IMP

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IMP & HIRFL Annual Report 2018年第1期 191-192页

作者： Zhang Zhichao lu chengui Zhang Ningtao Zhang Jinlong Tang Xiaodong Pu Tianlei Qian Yi Zhao Hongyun 不详

New and next generation RIB facilities provide new insight into the nuclear structure and reaction dynamics of exotic ***,many of the most interesting species are always produced with very low *** 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 *** novel TPC is being developed in a collaboration at *** primary goal is to study astrophysically important fusion reactions[4]and key(;p)reactions in the X-ray bursts[5].

关键词： stability. dimensions enable

Measurement of fast neutrons with ^(238)U-coated fission chamber

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Radiation Detection Technology and Methods 2019年第3期3卷 187-191页

作者： 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 Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 100049China

Purpose Afission chamber with two layers of 238Ufissile materials has been developed for the measurements of fast *** The developed fission chamber has been tested by 60Co gamma source and 252Cf neutron *** 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 *** detector works well,even if the static air is used as the filling *** 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 *** simulation results have indicated that the detector can be used to measure the fast neutron flux and neutron flux ratio of four fission ***,a 238U-coated fission chamber can be used within a reactor for longer time,in comparison with a 235U-coated fission chamber.

关键词： Fission chamber Fast neutrons Neutron source Experimental measurement Monte Carlo simulations

2-15 16O+40Ar Experiment Using TPC at RIBLL1

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IMP & HIRFL Annual Report 2016年第1期 48-49页

作者： Zhang Ningtao lu chengui Ji Liancheng Chen Han Chen Zhijun Hu Jun Li Kuoang Ma Shaobo Ru Longhui Tang Xiaodong Xu Shiwei 不详

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.

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Study of CEE-TPC 1/2 Principle Prototype

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IMP & HIRFL Annual Report 2022年第1期 193-194页

作者： Qiu Tianli Wei Xianglun Yang Herun lu chengui Ma Peng Hu Rongjiang Li Meng He Zhoubo Yin Xiaohao Huang Xinjie Yang Yuansheng Li Zhijie Duan Limin 不详

Heavy ion collision experiments are one of the important means to study the properties of nuclear *** CSR External-target Experiment(CEE)is a low-temperature,high-density nuclear matter measurement spectrom-eter used for heavy ion collision experiments,and it will become the rst large-scale nuclear physics experimental facility in China to operate in the GeV energy range after its completion.

关键词： collision Principle 1/2

New Trapezoid-shaped Frisch-grid Ionization Chamber for Low-energy Particle Measurements

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IMP & HIRFL Annual Report 2022年第1期 191-192页

作者： Qiu Tianli Wei Xianglun Yang Herun lu chengui Ma Peng Hu Rongjiang Li Meng He Zhoubo Yin Xiaohao Huang Xinjie Yang Yuansheng Li Zhijie Duan Limin 不详

Many laboratories in the world have built telescope arrays based on silicon strip position-sensitive detectors such as MUST2^([1]),However,these methods lack detec-tion and identi cation capability of a large number of low-energy particles produced over a wide range of beam *** improve the present experimental capabilities,we have developed a trapezoid-shaped Frisch-grid ioniza-tion chamber(TFG-IC)as part of a telescope system to cover the identi cation of low-energy incident particles.

关键词： particles shaped energy

5 - 21 Measurement of Wire Tension

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IMP & HIRFL Annual Report 2013年第1期 222-222页

作者： lu chengui Lv Li Yang Herun Zhang Junwei

Fusion Studies with Low-intensity Beams Using the Active Target Time Projection Chamber

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IMP & HIRFL Annual Report 2019年第1期 50-51页

作者： 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 Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China School of Physics and State Key Laboratory of Nuclear Physics and Technology Peking UniversityBeijing 100871China

Fusion reactions play a very important role for the creation of heavier elements in the quiescent and explosive burning phases in *** processes also generate the energy in the Sun that created and maintain life in our... 详细信息

关键词： maintain earth intensity