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1.
Comparison of Proton Shower Developments in the BGO Calorimeter of the Dark Matter Particle Explorer between GEANT4 and FLUKA Simulations 下载免费PDF全文
蒋维 岳川 崔明阳 李翔 袁强 Francesca Alemanno Paolo Bernardini Giovanni Catanzani 陈占方 Ivan De Mitri 董铁矿 Giacinto Donvito David Francois Droz Piergiorgio Fusco Fabio Gargano 郭东亚 Dimitrios Kyratzis 雷仕俊 刘杨 Francesco Loparco 马鹏雄 Giovanni Marsella Mario Nicola Mazziotta 潘旭 彭文溪 Antonio Surdo Andrii Tykhonov 魏逸丰 余玉洪 藏京京 张亚鹏 张永杰 张云龙 《中国物理快报》2020,(11):135-141
The DArk Matter Particle Explorer(DAMPE) is a satellite-borne detector for high-energy cosmic rays and y-rays. To fully understand the detector performance and obtain reliable physical results, extensive simulations of the detector are necessary. The simulations are particularly important for the data analysis of cosmic ray nuclei, which relies closely on the hadronic and nuclear interactions of particles in the detector material. Widely adopted simulation softwares include the GEANT4 and FLUKA,... 相似文献
2.
王猛 胡正国 徐瑚珊 孙志宇 王建松 肖国青 詹文龙 张雪荧 李琛 毛瑞士 张宏斌 赵铁成 徐治国 王玥 陈若富 黄天衡 高辉 贾飞 付芬 高启 韩建龙 章学恒 郑川 余玉洪 樊瑞睿 李波 郭忠言 《中国物理 C》2008,32(7)
The reaction cross section of ~(17)B on ~(12)C target at(43.7±2.4)MeV/u has been measured at the Radioactive Ion Beam Line in Lanzhou(RIBLL).The root-mean-square matter radius(R_(rms))was deduced to be(2.92±0.10)fm,while the R_(rms)of the core and the valence neutron distribution are 2.28 fm and 5.98 fm respectively.Assuming a"core plus 2n"structure in ~(17)B,the mixed configuration of(2s_(1/2))and(1d_(1/2))of the valence neutrons is studied and the s-wave spectroscopic factor is found to be(80±21)%. 相似文献
3.
The model of three-body Borromean halo nuclei breakup was described by using standard phase space distributions and the Monte Carlo simulation method was established to resolve the detection problem of two neutrons produced from breakup reaction on the neutron wall detector. For 6He case,overall resolution σEk for the Gaussian part of the detector response and the detection efficiency including solid angle acceptance with regard to the excitation energy Ek are obtained by the simulation of two neutrons from 6He breakup into the neutron wall. The effects of the algorithm on the angular and energy correlations of the fragments are briefly discussed. 相似文献
4.
We study the response function of the neutron wall for 300 MeV neutrons with GEANT4 simulations. The methods to find the correct neutron incident position and time are discussed, and the neutron emission angle and energy are reconstructed and compared with the simulation. 相似文献
5.
楼建玲 李智焕 叶沿林 江栋兴 华辉 李湘庆 张双全 郑涛 葛愉成 孔赞 吕林辉 李琛 卢飞 范凤英 李忠宇 曹中鑫 马立英 Faisal 徐瑚珊 胡正国 王猛 雷相国 段利敏 肖志刚 黄天衡 付芬 章学恒 郑川 余玉洪 涂小林 张亚鹏 杨彦云 张宏斌 唐彬 田育林 欧阳珍 黄美容 徐治国 岳珂 高启 《中国物理 C》2008,32(Z2):41-43
The β-delayed neutron and γ spectra of neutron-rich nucleus 21N using β-γ and β-n coincidence measurements were presented in this paper. Thirteen new neutron groups ranging from 0.28 MeV to 4.98 MeV and with a total branching ratio 88.7±4.2% were observed. One γ transition among the excited states of 21O, and four γ transitions among the excited states of 20O were identified in the β decay chain of 21N. The ungated half-life of 83.8±2.1 ms was also determined for 21N. 相似文献
6.
A high detection efficiency calorimeter which is used to detect γ-rays with energies from 1 MeV up to 10 MeV as well as light charged particles has been proposed. Design of the geometry, results of the crystal tests and Monte Carlo simulations are presented in this paper. The simulation results confirm that the calorimeter can obtain high detection efficiency and good energy resolution with the current designed geometry. And the calorimeter is competent for the future External Target Facility (ETF) experiments. 相似文献
7.
Property measurement of the CsI(Tl) crystal prepared at IMP 总被引:2,自引:0,他引:2
Large-sized CsI(Tl) single crystals, ~φ100mm×350mm, have been grown successfully, and this CsI(Tl) coupled with PD has been successfully utilized at RIBLL (the Radioactive Ion Beam Line in Lanzhou) to measure the energy of heavy ions as a stopping detector.
The performances of CsI(Tl) detector coupled with PD and APD have been
tested and compared, including the temperature dependence of scintillating light yield. 相似文献
8.
A single width NIM module that includes eight channels of the time-to-amplitude converter(TAC) and the charge-to-amplitude converter(QAC) is introduced in the paper, which is designed for the large neutron wall detector to measure charge(energy) and time interval simultaneously. The module adopts a high precision gated integration circuit to realize TAC and QAC. The input range of TAC is from 30 ns to 1 μs, and the input range of QAC is from 40 p C to 600 p C. The linearity error of TAC is lower than 1.28%, and the time resolution of TAC is less than 0.871%. The linearity error of QAC is lower than 0.81%, and the resolution of QAC is better than 0.936%. 相似文献
9.
研究了基于硅光电倍增管(SiPM)双端读出的面积为10 cm ×10 cm的薄塑料闪烁体探测器的时间性能。239Pu放射源测试结果显示:(1)在多支SiPM串连读出方式下,随着SiPM数量的增加,探测器时间分辨逐渐变好;(2)在固定12支SiPM数量不变的情况下,并联支路越多,探测器时间分辨越差;(3)采用快时间塑料闪烁体并增加其厚度,可有效提高探测器时间分辨;(4)采用比束斑尺寸更大的塑料闪烁体,可有效提高探测器时间分辨的位置均匀性;(5)对于1 mm厚的EJ232塑料闪烁体探测器,在单端12支SiPM串行连接的情况下,可获得好于131 ps的时间分辨。这一研究对RIBLL2起始时间探测器的升级改造具有重要的指导意义。 相似文献
10.
Studies of a scintillator-bar detector for a neutron wall at an external target facility 总被引:1,自引:0,他引:1
To achieve a better time resolution of a scintillator-bar detector for a neutron wall at the external target facility of HIRFL-CSR, we have carried out a detailed study of the photomultiplier, the wrapping material and the coupling media. The timing properties of a scintillator-bar detector have been studied in detail with cosmic rays using a high and low level signal coincidence. A time resolution of 80~ps has been achieved in the center of the scintillator-bar detector. 相似文献