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IMP & HIRFL Annual Report 2013年第1期 225-228页

作者： Yuan Youjin Xia Jiawen yang jiancheng yang Weiqing HIRFL Operation Group

Uniformity Control of Scanned Beam in 300 MeV Proton and Heavy Ion Accelerator Complex at SESRI

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原子能科学技术 2024年第4期58卷 705-713页

作者： HOU Lingxiao YUAN Youjin SHEN Guodong RUAN Shuang LIU Jie ZHU Yunpeng WANG Geng GUO Hongliang LYU Mingbang GAO Daqing XU Zhiguo SHENG Lina yang jiancheng Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China University of Chinese Academy of Sciences Beijing 100049China

In recent years,heavy ion accelerator technology has been rapidly developing worldwide and widely applied in the fields of space radiation simulation and particle ***,a very high uniformity in the irradiation area is required for the extracted ion beams,which is crucial because it directly affects the experimental precision and therapeutic ***,ultra-large-area and high-uniformity scanning are crucial requirements for spacecraft radiation effects assessment and serve as core specification for beamline terminal *** the 300 MeV proton and heavy ion accelerator complex at the Space Environment Simulation and Research Infrastructure(SESRI),proton and heavy ion beams will be accelerated and ultimately delivered to three irradiation *** order to achieve the required large irradiation area of 320 mm×320 mm,horizontal and vertical scanning magnets are used in the extraction beam ***,considering the various requirements for beam species and energies,the tracking accuracy of power supplies(PSs),the eddy current effect of scanning magnets,and the fluctuation of ion bunch structure will reduce the irradiation *** mitigate these effects,a beam uniformity optimization method based on the measured beam distribution was proposed and applied in the accelerator complex at *** the experiment,the uniformity is successfully optimized from 75%to over 90%after five iterations of adjustment to the PS *** this paper,the method and experimental results were introduced.

关键词： heavy ion accelerator beam uniformity scanning magnet MIC

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医学3D计算机视觉:研究进展和挑战

中国图象图形学报 2020年第10期25卷 2002-2012页

作者：杨健程倪冰冰上海交通大学电子工程系上海200240

医学影像的诊断是许多临床决策的基础,而医学影像的智能分析是医疗人工智能的重要组成部分。与此同时,随着越来越多3D空间传感器的兴起和普及,3D计算机视觉正变得越发重要。本文关注医学影像分析和3D计算机的交叉领域,即医学3D计算机视... 详细信息

医学影像的诊断是许多临床决策的基础,而医学影像的智能分析是医疗人工智能的重要组成部分。与此同时,随着越来越多3D空间传感器的兴起和普及,3D计算机视觉正变得越发重要。本文关注医学影像分析和3D计算机的交叉领域,即医学3D计算机视觉或医学3D视觉。本文将医学3D计算机视觉系统划分为任务、数据和表征3个层面,并结合最新文献呈现这3个层面的研究进展。在任务层面,介绍医学3D计算机视觉中的分类、分割、检测、配准和成像重建,以及这些任务在临床诊断和医学影像分析中的作用和特点。在数据层面,简要介绍了医学3D数据中最重要的数据模态:包括计算机断层成像(computed tomography,CT)、磁共振成像(magnetic resonance imaging,MRI)、正电子放射断层成像(positron emission tomography,PET)等,以及一些新兴研究提出的其他数据格式。在此基础上,整理了医学3D计算机视觉中重要的研究数据集,并标注其数据模态和主要视觉任务。在表征层面,介绍并讨论了2D网络、3D网络和混合网络在医学3D数据的表征学习上的优缺点。此外,针对医学影像中普遍存在的小数据问题,重点讨论了医学3D数据表征学习中的预训练问题。最后,总结了目前医学3D计算机视觉的研究现状,并指出目前尚待解决的研究挑战、问题和方向。

关键词：医学影像分析 3D计算机视觉深度学习卷积神经网络(CNN) 预训练

6-1 Operation Status of HIRFL in 2014

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IMP & HIRFL Annual Report 2014年第1期 247-248页

作者： Yuan Youjin Xia Jiawen yang jiancheng yang Weiqing Mao Lijun HIRFL operation group 不详

Since beginning of 2014, HIRFL has been operated about 7 272 machine hours, including 626 h for the machinepreparation, 998.5 h for the machine commissioning, 158.5 h for equipment failure period, 4 964.5 h for experimenttarget time and 235 h for the machine study. Several different operation modes were included: 1 321.5 h for theindependent operation of SFC; 2 631 h for operation of the combination of SFC+SSC; 1 422 h for operation of thecombination of SFC+CSRm, 1 897.5 h for the operation of the combination of SFC+CSRm+CSRe, and 289.5 h isthe others.

关键词： Operation Status HIRFL

6-1 Operation Status of HIRFL in 2015

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IMP & HIRFL Annual Report 2015年第1期 259-260页

作者： Yuan Youjin Xia Jiawen yang jiancheng yang Weiqing Mao Lijun HIRFL operation group 不详

During 2015 the HIRFL accelerator of IMP delivered 26 species of heavy for experiments related on nuclear physics, atomic physics, material sciences, radio-biology researches and machine studies, including 13 species of them were accelerated first time in HIRFL. The typical ion beams provided by HIRFL in 2015 are listed in Table 1.

关键词： Operation Status HIRFL

Operation and Commissioning of ^(78)Kr^(26+) with HIRFL

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IMP & HIRFL Annual Report 2022年第1期 262-265页

作者： Ge Wenwen yang jiancheng Shen Guodong HIRFL Operation Group 不详

In 2022,the ^(78)Kr^(26+)beam was used for experiments at the PISA Terminal and the Single Event Effect Terminal of *** the routine operation,a primary beam of ^(78)Kr^(26+)at 6.05 MeV/u provided by SFC were accumulat... 详细信息

关键词： MeV/u beam routine

Electron cooling experiments in CSR

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Electron cooling experiments in CSR

第一届中国粒子加速器会议

作者： yang XiaoDong LI Jie MAO LiJun LI GuoHong MA XiaoMing YAN TaiLai MAO RuiShi yang jiancheng YUAN YouJin PARKHOMCHUK Vasily REVA Vladimir Institute of Modern Physics Chinese Academy of Sciences Budker Institute of Nuclear Physics

The six species heavy ion beam was accumulated with the help of electron cooling in the main ring of Cooler Storage Ring of Heavy Ion Research Facility in Lanzhou(HIRFL-CSR).The ion beam accumulation dependence on the parameters of cooler was investigated *** 400 MeV/u C and 200 MeV/u Xe were stored and cooled in the experimental ring CSRe,and the cooling force was measured in different conditions.

关键词： heavy ion beam beam accumulation electron cooling cooling force

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重整装置预处理部分工艺技术方案对比

炼油技术与工程 2006年第2期36卷 8-12页

作者：杨建成中国石化集团洛阳石油化工工程公司河南省洛阳市471003

对大型重整装置预处理部分的工艺流程,包括先加氢后分馏和先分馏后加氢方案、先汽提后分馏和汽提塔“二塔合一”方案(即汽提塔中不但脱除石脑油中的硫、氮化合物和水,还脱除轻石脑油),从产品质量、能耗、投资和操作方面分别进行了技术... 详细信息

对大型重整装置预处理部分的工艺流程,包括先加氢后分馏和先分馏后加氢方案、先汽提后分馏和汽提塔“二塔合一”方案(即汽提塔中不但脱除石脑油中的硫、氮化合物和水,还脱除轻石脑油),从产品质量、能耗、投资和操作方面分别进行了技术和经济对比。结果表明(以2．2 Mt/a连续重整装置为例),先加氢后分馏流程的工程投资比先分馏后加氢流程岛550 ×104RMB￥,但其产品方案更加灵活,其轻石脑油产品的用途更加广泛;先汽提后分馏流程比汽提塔“二塔合一”流程在节能、工程投资、操作稳定性和灵活性方面更具优势。

关键词：连续重整装置原料预处理工艺流程对比产品质量能耗投资

Operation Status of HIRFL in 2017

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IMP & HIRFL Annual Report 2017年第1期 225-226页

作者： Yuan Youjin Xia Jiawen yang jiancheng yang Weiqing Mao Lijun HIRFL operation group 不详

In 2017,the HIRFL facility has operated for 7632 h,including 745 h for the machine preparation,921 hfor the machine commissioning due to beam change,198.5 h for the equipment failure period,5326 h for the experimental targets and 392 for the machine *** different modes are operated,including 2932 h for SFC;2780 h for the combination of SFC+SSC;1517 h for the combination of SFC+CSRm,403 h for the combination of SFC+CSRm+CSRe;and 49.5 h for other special modes.

关键词： SFC HIRFL beam

6 Accelerator and the Others＆＆6 - 1 Operation Status of HIRFL in 2012

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IMP & HIRFL Annual Report 2012年第1期 239-239,241,242页

作者： Yuan Youjin Xia Jiawen yang jiancheng Zhao Hongwei yang Weiqing HIRFL Operation Group