中国科学院机构知识库网格系统: 检索

Simulated design of neutron ambient dose equivalent meter with gadolinium core plastic scintillator using Geant4 code 期刊论文 OAI收割
RADIATION MEASUREMENTS, 2021, 卷号: 144
作者: Hong, B.; Xu, Y.; Chen, N.

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收藏 | 浏览/下载：28/0 | 提交时间：2021/08/31

Gadolinium Plastic scintillator Neutron ambient dose equivalent meter Energy response Geant4 simulation

Comparison of simulated backgrounds with in-orbit observations for HE, ME, and LE onboard Insight-HXMT 期刊论文 OAI收割
Astrophysics and Space Science, 2020, 卷号: 365, 页码: 158
作者: HXMT

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收藏 | 浏览/下载：36/0 | 提交时间：2022/02/08

Insight-HXMT Geant4 simulation Background observation Astrophysics - Instrumentation and Methods for Astrophysics Abstract: Insight-HXMT, the first X-ray astronomical satellite in China, aims to reveal new sources in the Galaxy and to study fundamental physics of X-ray binaries from 1 to 250 keV. It has three collimated telescopes, the High Energy X-ray telescope (HE), the Medium Energy X-ray telescope (ME), and the Low Energy X-ray telescope (LE). Before the launch, in-orbit backgrounds of these three telescopes had been estimated through Geant4 simulation, in order to investigate the instrument performance and the achievement of scientific goals. In this work, these simulated backgrounds are compared with in-orbit observations. Good agreements are shown for all three telescopes. For HE, (1) the deviation of the simulated background rate after two years of operation in space is 5 % from the observation (2) the total background spectrum and the relative abundance of the 67 keV line show long-term increases both in simulations and observations. For ME, (1) the deviation of simulated background rate is within 15 % from the observation, and (2) there are no obvious long-term increase features in the background spectra of simulations and observations. For LE, the background level given by simulations is also consistent with observations. The consistencies of these comparisons validate that the Insight-HXMT mass model, i.e., space environment components and models adopted, physics processes selected, and detector constructions built, is reasonable. However, the line features at 7.5 and 8.0 keV, which are obvious in the observed spectra of LE, are not evident in simulations. This might result from uncertainties in the LE constructions.

Analysis and simultion. for Compton camera's imaging resolution 期刊论文 OAI收割
ACTA PHYSICA SINICA, 2019, 卷号: 68, 期号: 11, 页码: 9
作者: Cai Xiao-Hong; Song Zhang-Yong; Yu De-Yang

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收藏 | 浏览/下载：51/0 | 提交时间：2019/11/10

Compton camera heavy ion therapy Geant 4 simulation back-projection imaging

Investigation of flux dependent sensitivity on single event effect in memory devices 期刊论文 OAI收割
CHINESE PHYSICS B, 2018, 卷号: 27, 期号: 7, 页码: 076101
作者: Liu, Tian-qi; Xi, Kai; Hou, Ming-dong; Sun, You-mei; Duan, Jing-lai

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收藏 | 浏览/下载：30/0 | 提交时间：2018/10/08

ion flux single event effect GEANT4 simulation memory device

Angular distribution measurement for C-12 fragmentation via C-12 + C-12 scattering at 100 MeV/u 期刊论文 OAI收割
CHINESE PHYSICS C, 2018, 卷号: 42, 页码: 074001
作者: Qu, Wei-Wei; Zhang, Gao-Long; Tian, Guo-Yu; Chen, Zhi-Qiang; Xu, Shou-Ping

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收藏 | 浏览/下载：29/0 | 提交时间：2018/07/16

breakup angular distribution AMD Geant4 simulation

Modification of source contribution in pals by simulation using geant4 code 期刊论文 iSwitch采集
Nuclear instruments & methods in physics research section b-beam interactions with materials and atoms, 2017, 卷号: 397, 页码: 75-81
作者: Ning, Xia; Cao, Xingzhong; Li, Chong; Li, Demin; Zhang, Peng

收藏 | 浏览/下载：106/0 | 提交时间：2019/04/23

Positron annihilation lifetime spectrum Geant4 simulation Kapton film Diffusion and reflection Source contribution

Modification of source contribution in PALS by simulation using Geant4 code 期刊论文 OAI收割
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2017, 卷号: 397, 页码: 75-81
作者: Gong, YH; Wei, L; Wang, BY; Xia, R; Zhang, P

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收藏 | 浏览/下载：92/0 | 提交时间：2019/08/27

Positron annihilation lifetime spectrum Geant4 simulation Kapton film Diffusion and reflection Source contribution

Fast muon simulation in the JUNO central detector 期刊论文 OAI收割
CHINESE PHYSICS C, 2016, 卷号: 40, 期号: 8
作者: Lin T(林韬); Deng ZY(邓子艳); Li WD(李卫东); Cao GF(曹国富); Lin, T

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收藏 | 浏览/下载：18/0 | 提交时间：2017/07/27

JUNO central detector fast simulation Geant4

Fast muon simulation in the JUNO central detector 期刊论文 OAI收割
CHINESE PHYSICS C, 2016, 卷号: 40, 期号: 8
作者: Lin, Tao; Deng, Zi-Yan; Li, Wei-Dong; Cao, Guo-Fu; You, Zheng-Yun

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收藏 | 浏览/下载：1/0 | 提交时间：2023/03/16

JUNO central detector fast simulation Geant4

Simulation of the in-flight background for HXMT/HE 期刊论文 OAI收割
Astrophysics and Space Science, 2015, 卷号: 360, 期号: 2, 页码: 47
作者: Zhang, Juan; Song, Li-Ming; Xiong, Shao-Lin; Guan, Ju; Xie, Fei

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收藏 | 浏览/下载：10/0 | 提交时间：2019/07/11

HXMT Geant4 Background Simulation