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Themagnetic field measurement system for HEPS-TF superconducting wiggler

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Radiation Detection Technology and Methods 2022年第1期6卷 129-135页

作者： Wan chen ZhiQiang Li Zhuo Zhang Xiangchen Yang fusan chen XianJing Sun Huihua Lu Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Key Laboratory of Particle Acceleration Physics and Technology Chinese Academy of SciencesBeijing 100049China

Background High Energy Photon Source(HEPS)is the fourth-generation synchrotron radiation source to be established in *** is a high-performance and high-energy synchrotron radiation light source with a beam energy of 6 GeV and an ultra-low emittance of better than 0.06 nm×rad(http://***/heps/***).Superconducting 3W1 wiggler magnet is one of the insertion devices in High Energy Photon Source Test Facility project(HEPS-TF).And it is also the key component to obtain higher brightness in high photon energy *** In the development process of superconducting wiggler,in order to ensure the magnetic field quality of each processing,it is necessary to monitor the magnetic field performance of before and after the full length bare magnet installed with ***,different magnetic field measuring devices are being developed for different develop *** The magnetic field performance of the full length bare magnet should be tested in vertical at low *** the magnetic structure is installed in the horizontal cryostat,the horizontal test is carried *** view of these two processes,the vertical magnetic field measurement system and the horizontal magnetic field measurement system have been developed,*** The magnetic performances of the full length bare magnet and assembled with the horizontal cryostat were measured by the vertical and horizontal magnetic field measurement *** first and second field integrals are corrected to better than the Physical requirements according to the magnetic field measurement *** magnetic field performances are described in this *** After more than a year operation of 3W1-SCW on the BII line station,the characteristic energy and photon flux of synchrotron radiation have been greatly improved,and the performance is *** indicates that the measurement results of the magnetic field measurement system are reliable and credible.

关键词： Hall probe Stretch wire Magnetic field measurement Vertical test Superconducting wiggler

Two-dimensional mechanical analysis of superconducting double-aperture quadrupole magnet prototype for CEPC

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Radiation Detection Technology and Methods 2019年第4期3卷 46-50页

作者： Xiangchen Yang Yingshun Zhu Ran Liang fusan chen Institute of High Energy Physics Chinese Academy of SciencesBeijingChina

Introduction The circular electron-positron collider(CEPC)with a circumference about 100 km,a beam energy up to 120 GeV is proposed by the Institute of High Energy *** heart of the CEPC is a double-ring collider with two interaction *** each side of the collision point,superconducting double-aperture quadrupole magnets based on cos2θdesign which is named QD0 and QF1 separately are *** kind of superconducting magnet is designed first time in *** stability analysis is very important for superconducting magnet before *** paper mainly focused on the mechanical analysis of the prototype for *** and methods A 2D 2-layers model was developed using ANSYS to simulate the stress distribution in the coil from collaring process at room temperature to low temperature *** As part of the CEPC project,a 40 mm bore diameter superconducting double-aperture quadrupole magnet named QD0 is being designed and the physical calculation has been *** paper introduces the mechanical design,simulation model of prototype for QD0,and mainly expounds on stress *** stress distribution during 4 stages including collaring(load application),collaring(inserting keys),cooling down and excitation is described in detail.

关键词： Superconducting quadrupole cos2θ Collar Stress

A rotating coilmeasurement system based on CMM for high-gradient small-aperture quadrupole in HEPS-TF

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Radiation Detection Technology and Methods 2021年第1期5卷 8-14页

作者： Mei Yang fusan chen Baogui Yin Ran Liang Shuai Li Yingshun Zhu Key Laboratory of Particle Acceleration Physics and Technology Institute of High Energy PhysicsChinese Academy of ScienceBeijing 1000049China China Spallation Neutron Source Institute of High Energy PhysicsChinese Academy of SciencesDongguan 523803China Dongguan Neutron Science Center Dongguan 523808China University of Chinese Academy of Sciences Beijing 100049China

Purpose A new rotating coil measurement system based on the coordinate measurement machine(CMM)is developed for measuring high-gradient small-aperture quadrupole magnet in the Test Facility of High Energy Photon Source(HEPS-TF).Methods The CMMand two groups of Newport translate stages are combined to align the rotating coil relative to the magnet mechanical center.A high precision ceramic skeleton with bucked coil is made as a measurement *** integrated field gradient,harmonics,magnetic center offset and excitation curve of a high-gradient small-aperture quadrupole prototype magnet are *** The rotating coil is aligned to the magnet mechanical center within 10μ*** reproducibility of higher harmonics is within 0.2×10–*** repeatability of the magnet center in horizontal direction is under 1.5μm,while that in vertical direction is less than 2.5μm in different *** architecture of the measurement system,the measuring procedure and some primary results of the quadrupole prototype magnet are illustrated in this *** A rotating coil measurement system based on CMM has been well developed,and the collimation efficiency and precision are *** harmonic changes caused by iron fingers are measured by the measurement *** difference between the measurement result and the OPERA-3D simulation result is less than 0.5×10–*** performance of this measurement system can meet the magnet measurement requirements of HEPS-TF.

关键词： Small-aperture quadrupole Rotating coil CMM Digital bucking Magnetic field measurement system

Study on the technology of 3W1 superconducting magnet

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Radiation Detection Technology and Methods 2022年第1期6卷 97-101页

作者： Xiangchen Yang fusan chen Xianjing Sun Xiaojuan Bian Wan chen Huihua Lu Zhiqiang Li Institute of High Energy Physics Chinese Academy of SciencesBeijingChina University of Chinese Academy of Sciences HuairouChina

Introduction The superconducting wiggler magnet named as 3W1 is the key device for the test facility for the High Energy Photon Source(HEPS).The magnet structure is 1430 mm long with a gap of 68 mm,and the designed peak field is 2.6 *** main magnet part is comprised by 28 main coils and 4 correction coils at both *** to the large gap and high field,the manufacturing process is extremely *** During R&D,the problems of coil winding,impregnation,pre-stress evaluation and quench risk control were solved by optimizing the *** coils were divided into groups to complete the cryogenic test,and the qualified coils were selected to complete the assembly of the *** The bare magnet has been tested with liquid helium bath in April 2018 in IHEP,and the loading current reached up to 345 A resulting in the expected 2.61 *** this paper,the technology about the coil winding,impregnation,assembling and test is presented in detail.

关键词： 3W1 Superconducting Magnet

Accurate calculation of field quality in conventional straight dipole magnets

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Radiation Detection Technology and Methods 2018年第1期2卷 93-98页

作者： Yingshun Zhu fusan chen Wen Kang Wan chen Mei Yang Xi Wu Key Laboratory of Particle Acceleration Physics and Technology Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of Chinese Academy of Science Beijing 100049China Dongguan Campus Institute of High Energy PhysicsChinese Academy of SciencesDongguan 523803China

Purpose In the standard design method of straight dipole magnets,the good field region is symmetric to the magnet mechanical center both in 2D and in 3D,so the obtained field quality is not the actual one because the field integration lines are not consistent with the curved beam *** this paper,an improved method for straight dipole magnets aiming at obtaining accurate field quality is *** The field quality is calculated by taking into account the relationship of the good field region to the magnet straight *** description of the improved method is introduced,and two application examples of straight dipole magnets are presented to investigate the detailed field quality difference between the improved and traditional *** result of the improved method is also compared with the field quality calculated along particle trajectory in *** It is shown that the difference in field quality between the improved and traditional methods cannot be neglected,and the field quality in the improved method is very close to the one calculated along real beam *** The field quality in the improved method is accurate enough for practical application in a straight dipole magnet.

关键词： Accelerator Straight dipole magnet Field simulation Beam sagitta Field quality

Modification and optimization of the storage ring lattice of the High Energy Photon Source

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Radiation Detection Technology and Methods 2020年第4期4卷 415-424页

作者： Yi Jiao fusan chen Ping He Chunhua Li Jingyi Li Qing Qin Huamin Qu Jinyu Wan Jiuqing Wang Gang Xu Key Laboratory of Particle Acceleration Physics and Technology Institute of High Energy PhysicsChinese Academy of SciencesBeijingChina University of Chinese Academy of Sciences BeijingChina

Purpose For the High Energy Photon Source(HEPS),a green-field fourth-generation storage ring light source,the prelimi-nary design report(PDR)was completed in 2018,when the accelerator physics design had been basically *** the subsequent hardware and engineering design of the HEPS storage ring based on the PDR design,a few problems and challenges emerged,calling for modifications of the *** In this paper,we will introduce the background and reasons for the modifications and present the linear optics and simulation results for the nonlinear performance of the modified lattice of the HEPS storage *** and conclusion The modified lattice satisfies the requirements from hardware and engineering design.

关键词： High Energy Photon Source Fourth-generation storage ring light source Lattice Linear optics Nonlinear performance

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高能同步辐射光源磁铁数据库系统的设计

强激光与粒子束 2018年第12期30卷 117-121页

作者：乔予思储中明陈福三中国科学院高能物理研究所北京100049 中国科学院大学北京100049

高能同步辐射光源(HEPS)磁铁数据库系统的开发过程包括数据库设计、数据库创建以及用于存储查询的网页管理系统的整体结构设计和开发。根据对磁铁相关数据格式和功能需求的调研,整个系统采用MySQL数据库,将HEPS的磁铁相关数据规范统一... 详细信息

高能同步辐射光源(HEPS)磁铁数据库系统的开发过程包括数据库设计、数据库创建以及用于存储查询的网页管理系统的整体结构设计和开发。根据对磁铁相关数据格式和功能需求的调研,整个系统采用MySQL数据库,将HEPS的磁铁相关数据规范统一地存储,包括磁铁设计参数、磁铁设备信息和磁铁测量数据等。同时,开发了一套基于web的数据录入、查询管理系统,能够提供便捷的数据展示、数据获取等功能,并可以连接HEPS命名数据库、参数数据库等,对于磁铁设备的安装、运行和维护以及HEPS整体的设备信息管理具有重要的意义。

关键词：高能光源磁铁数据数据库管理系统网页应用

CEPC Technical Design Report

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Radiation Detection Technology and Methods 2024年第1期8卷 I0003-I0016,1-1091页

作者： Waleed Abdallah Tiago Carlos Adorno de Freitas Konstantin Afanaciev Shakeel Ahmad Ijaz Ahmed Xiaocong Ai Abid Aleem Wolfgang Altmannshofer Fabio Alves Weiming An Rui An Daniele Paolo Anderle Stefan Antusch Yasuo Arai Andrej Arbuzov Abdesslam Arhrib Mustafa Ashry Sha Bai Yu Bai Yang Bai Vipul Bairathi Csaba Balazs Philip Bambade Yong Ban Tripamo Bandyopadhyay Shou-Shan Bao Desmond P.Barber Ayse Bat Varvara Batozskaya Subash Chandra Behera Alexander Belyaev Michele Bertucci Xiao-Jun Bi Yuanjie Bi Tianjian Bian Fabrizio Bianchi Thomas Biekotter Michela Biglietti Shalva Bilanishvili Deng Binglin Denis Bodrov Anton Bogomyagkov Serge Bondarenko Stewart Boogert Maarten Boonekamp Marcello Borri Angelo Bosotti Vincent Boudry Mohammed Boukidi Igor Boyko Ivanka Bozovic Giuseppe Bozzi Jean-Claude Brient Anastasiia Budzinskaya Masroor Bukhari Vladimir Bytev Giacomo Cacciapaglia Hua Cai Wenyong Cai Wujun Cai Yijian Cai Yizhou Cai Yuchen Cai Haiying Cai Huacheng Cai Lorenzo Calibbi Junsong Cang Guofu Cao Jianshe Cao Antoine Chance Xuejun Chang Yue Chang Zhe Chang Xinyuan Chang Wei Chao Auttakit Chatrabhuti Yimin Che Yuzhi Che Bin chen Danping chen Fuqing chen fusan chen Gang chen Guoming chen Hua-Xing chen Huirun chen Jinhui chen Ji-Yuan chen Kai chen Mali chen Mingjun chen Mingshui chen Ning chen Shanhong chen Shanzhen chen Shao-Long chen Shaomin chen Shiqiang chen Tianlu chen Wei chen Xiang chen Xiaoyu chen Xin chen Xun chen Xurong chen Ye chen Ying chen Yukai chen Zelin chen Zilin chen Gang chen Boping chen Chunhui chen Hok Chuen cheng Huajie cheng Shan cheng Tongguang cheng Yunlong Chi Pietro Chimenti Wen Han Chiu Guk Cho Ming-Chung Chu Xiaotong Chu Ziliang Chu Guglielmo Coloretti Andreas Crivellin Hanhua Cui Xiaohao Cui Zhaoyuan Cui Brunella D'Anzi Ling-Yun Dai Xinchen Dai Xuwen Dai Antonio De Maria Nicola De Filippis Christophe De La Taille Francesca De Mori Chiara De Sio Elisa Del Core Shuangxue Deng Wei-Tian Deng Zhi Deng Ziyan Deng Bhupal Dev Tang Dewen Biagio Di Micco Ran Ding Siqin Dingl Yadong Ding Haiyi Dong Jianin AGH University of Science and Technology Faculty of Physics and Applied Computer ScienceKrakow Anhui University HefeiAnhui Applied Physics Department Federal Urdu University of ArtsScience and TechnologyIslamabad Banaras Hindu University Institute of ScienceVaranasi Bandirma Onyedi Eylul University Bandirma Beihang University Beijing Beijing Computational Science Research Center Beijing Beijing Conveyi LTD Beijing Beijing Glass Research Institute Co. LtdBeijing Beijing Institute of Technology Beijing Beijing Normal University Beijing Brown University ProvidenceRI Budker Institute of Nuclear Physics Novosibirsk Cadi Ayyad University Laboratory of Fundamental and Applied PhysicsPolydisciplinary FacultyMarrakech Cairo University Giza Center for Theory and Computation National Tsing Hua UniversityHsinchu Central China Normal University WuhanHubei Central South University ChangshaHunan Centro de Fisica Teorica de Particulas Universidade Tecnica de LisboaLisboa chengdu KaitengSifang Digital Radio&TV Equipment Co. LtdChengduSichuan China academy of engineering physics MianyangSichuan China building materials academy Beijing China Center of Advanced Science and Technology Beijing China Institute of Atomic Energy Beijing China Jiliang University HangzhouZhejiang China Nuclear Instrument CO. LTDBeijing China University of Geosciences Beijing China University of Geosciences WuhanHubei China University of Mining and Technology XuzhouJiangsu China West Normal University NanchongSichuan Chongqing University Department of PhysicsChongqing Chulalongkorn University Bangkok City University of Hong Kong Department of PhysicsHong Kong Cockcroft Institute Daresbury Cornell University IthacaNY CPPM(AMU/IPhU&CNRS/INP) Marseille Dalian Minzu University DalianLiaoning Dalian University of Technology Department of PhysicsDalian Deutsches Elektronen-Synchrotron DESY Hamburg Dzhelepov Laboratory of Nuclear Problems of Joint Institute for Nuclear Research(DLNP JINR) Dubna East China University Of Science And Technol

The Circular Electron Positron Collider(CEPC)is a large scientific project initiated and hosted by China,fostered through extensive collaboration with international *** complex comprises four accelerators:a 30 GeV Linac,a 1.1 GeV Damping Ring,a Booster capable of achieving energies up to 180 GeV,and a Collider operating at varying energy modes(Z,W,H,and tt).The Linac and Damping Ring are situated on the surface,while the subterranean Booster and Collider are housed in a 100 km circumference underground tunnel,strategically accommodating future expansion with provisions for a potential Super Proton Proton Collider(SPPC).The CEPC primarily serves as a Higgs *** its baseline design with synchrotron radiation(SR)power of 30 MW per beam,it can achieve a luminosity of 5×10^(34)cm^(-2)s^(-1)per interaction point(IP),resulting in an integrated luminosity of 13 ab^(-1)for two IPs over a decade,producing 2.6 million Higgs *** the SR power to 50 MW per beam expands the CEPC's capability to generate 4.3 million Higgs bosons,facilitating precise measurements of Higgs coupling at sub-percent levels,exceeding the precision expected from the HL-LHC by an order of *** Technical Design Report(TDR)follows the Preliminary Conceptual Design Report(Pre-CDR,2015)and the Conceptual Design Report(CDR,2018),comprehensively detailing the machine's layout,performance metrics,physical design and analysis,technical systems design,R&D and prototyping efforts,and associated civil engineering ***,it includes a cost estimate and a preliminary construction timeline,establishing a framework for forthcoming engineering design phase and site selection *** is anticipated to begin around 2027-2028,pending government approval,with an estimated duration of 8 *** commencement of experiments and data collection could potentially be initiated in the mid-2030s.

关键词： initiated exceeding precise

反渗透膜的性能研究及在造纸废水处理中的应用

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湖南造纸 2014年第1期 36-38页

作者：陈夫山刘丹宋晓明青岛科技大学山东青岛266042

本文研究了反渗透膜BW30和X-20操作压力对膜通量和脱盐率的影响、离子半径对脱盐率的影响。实验结果表明:当操作压力从0.1MPa升高到0.2MPa时,两种膜对盐溶液的通量分别从0.59 L/(m2·h)上升到1.99 L/(m2·h),从0.34 L/(m2·h)上升到1.36... 详细信息

本文研究了反渗透膜BW30和X-20操作压力对膜通量和脱盐率的影响、离子半径对脱盐率的影响。实验结果表明:当操作压力从0.1MPa升高到0.2MPa时,两种膜对盐溶液的通量分别从0.59 L/(m2·h)上升到1.99 L/(m2·h),从0.34 L/(m2·h)上升到1.36 L/(m2·h),而脱盐率从30%下降到20%左右,随着离子半径的增大,膜的脱盐率依次增大;并研究了反渗透膜在造纸废水处理中的应用。实验结果表明:纳滤膜对小分子有机物有很好的截留、脱盐效果明显,并且对色度、浊度有很好的去除能力。

关键词：反渗透膜膜通量脱盐率造纸废水