中国科学院近代物理研究所正在研制运行于45 GHz的世界首台第4代电子回旋共振离子源(fourth electron cyclotron resonance,FECR)。该离子源磁体线圈全部采用Nb3Sn(铌三锡)超导材料制作,这一超导材料临界性能对应力敏感,加之磁体中六极...中国科学院近代物理研究所正在研制运行于45 GHz的世界首台第4代电子回旋共振离子源(fourth electron cyclotron resonance,FECR)。该离子源磁体线圈全部采用Nb3Sn(铌三锡)超导材料制作,这一超导材料临界性能对应力敏感,加之磁体中六极线圈和螺线管线圈之间的应力不平衡分布,导致磁铁机械结构设计面临极大挑战。为了验证离子源磁铁结构设计的合理性和仿真结果的可信性,为全尺寸真机的研制奠定技术基础,设计了能够一定程度上反映离子源磁体机械结构的半长度样机。主要介绍了FECR半长度样机的三维机械结构分析,借助ANSYS有限元软件分析了磁铁在室温组装、冷却降温和加电励磁时的应力分布和变化情况,为磁体装配提供预应力参考。展开更多
Accelerator driven system (ADS) is the effective tool for transmuting the long-lived transuranic radionuclidesinto shorter-lived radionuclides. A project called C-ADS is being studied at the Chinese Academy of Science...Accelerator driven system (ADS) is the effective tool for transmuting the long-lived transuranic radionuclidesinto shorter-lived radionuclides. A project called C-ADS is being studied at the Chinese Academy of Sciences.Injector II prototype of C-ADS which is in charge of by the Institute of Modern Physics has already gained agood progress so far. Two superconducting solenoids with the effective length of 150 mm have been designed andfabricated by Magnet and Mechanical Group of IMP and installed into the testing cryomodule[1].展开更多
The High Energy Fragment Separator(HFRS)within the Heavy-ion Accelerator Facility(HIAF)features a beamline comprised of 11 sets of superconducting dipoles and 39 sets of combined multipoles,spanning a length of approx...The High Energy Fragment Separator(HFRS)within the Heavy-ion Accelerator Facility(HIAF)features a beamline comprised of 11 sets of superconducting dipoles and 39 sets of combined multipoles,spanning a length of approximately 180 m.The dipoles are constructed using warm iron superferric technology.Meanwhile,the combined multipoles feature a coil dominated DCT(Discrete Cosine-Theta)coil structure,offering a large aperture,high polar field,compact design,and robust operation.展开更多
High Intensity heavy ion Accelerator Facility(HIAF)consists of a Super-conducting ECR Ion Source(SECR),Superconducting linac(iLinac),Booster Ring(BRing),Fragment Separator(HFRS),Spectrometer Ring(SRing),and several tr...High Intensity heavy ion Accelerator Facility(HIAF)consists of a Super-conducting ECR Ion Source(SECR),Superconducting linac(iLinac),Booster Ring(BRing),Fragment Separator(HFRS),Spectrometer Ring(SRing),and several transport lines and terminals.It contains more than 600 room-temperature magnets,100 superconducting magnets,and a range of injection and extraction components.The latest general layout of the HIAF is shown in Fig.1.展开更多
Last year,the MTG(Magnet Technology Group)undertaken the magnet development formany accelerators such as High Intensity heavy ion Accelerator Facility(HIAF),China initiative Accelerator Driven System(CiADS),Space.Envi...Last year,the MTG(Magnet Technology Group)undertaken the magnet development formany accelerators such as High Intensity heavy ion Accelerator Facility(HIAF),China initiative Accelerator Driven System(CiADS),Space.Environment Simulation and Research Infrastructure(SESRI).展开更多
The models of quench analysis of CiADS superconducting magnets are displayed in Fig.1.Three structures of superconducting magnet are designed and the stored energies are 6.5 kJ for sol.1.
Puremultipolar magnetic field is an ideal field derived from the formula and it is very useful for scientific research Discrete-Cosine-Theta(DCT)and Canted-Cosine-Theta(CCT)coils as shown in Figs.
The fourth-generation 45 GHz ECR source(FECR)is under development in the Institute of Modern Physics.One of the critical components of FECR is the Nb_(3)Sn sextupole coil with a length of 937.4 mm.
中国科学院近代物理研究所正在进行国际首台45 GHz全铌三锡超导离子源FECR(Fourth Electron Cyclotron Resonance)磁体的研制,该离子源磁体线圈由六个铌三锡超导六极线圈和四个铌三锡超导螺线管线圈组成。由于单根超导线绕制异形六极线...中国科学院近代物理研究所正在进行国际首台45 GHz全铌三锡超导离子源FECR(Fourth Electron Cyclotron Resonance)磁体的研制,该离子源磁体线圈由六个铌三锡超导六极线圈和四个铌三锡超导螺线管线圈组成。由于单根超导线绕制异形六极线圈(非标准鞍型)技术难度大,且铌三锡超导性能对应力敏感,为了测试单个铌三锡六极线圈性能能否达到设计指标,基于铝合金壳层结构和Bladder-Key精确预紧技术,设计了镜像磁场约束结构。本工作主要阐述了运用ANSYS参数化设计编程对镜像磁场结构进行优化设计的过程和优化后的镜像磁场结构,确定了室温预应力大小,并给出了线圈经过室温预紧、冷却降温和加电励磁后的最大等效应力。进一步结合实际六极线圈制作公差(±0.1 mm),分析和评估了公差对镜像磁场结构中六极线圈预应力施加的影响。展开更多
文摘中国科学院近代物理研究所正在研制运行于45 GHz的世界首台第4代电子回旋共振离子源(fourth electron cyclotron resonance,FECR)。该离子源磁体线圈全部采用Nb3Sn(铌三锡)超导材料制作,这一超导材料临界性能对应力敏感,加之磁体中六极线圈和螺线管线圈之间的应力不平衡分布,导致磁铁机械结构设计面临极大挑战。为了验证离子源磁铁结构设计的合理性和仿真结果的可信性,为全尺寸真机的研制奠定技术基础,设计了能够一定程度上反映离子源磁体机械结构的半长度样机。主要介绍了FECR半长度样机的三维机械结构分析,借助ANSYS有限元软件分析了磁铁在室温组装、冷却降温和加电励磁时的应力分布和变化情况,为磁体装配提供预应力参考。
文摘Accelerator driven system (ADS) is the effective tool for transmuting the long-lived transuranic radionuclidesinto shorter-lived radionuclides. A project called C-ADS is being studied at the Chinese Academy of Sciences.Injector II prototype of C-ADS which is in charge of by the Institute of Modern Physics has already gained agood progress so far. Two superconducting solenoids with the effective length of 150 mm have been designed andfabricated by Magnet and Mechanical Group of IMP and installed into the testing cryomodule[1].
文摘The High Energy Fragment Separator(HFRS)within the Heavy-ion Accelerator Facility(HIAF)features a beamline comprised of 11 sets of superconducting dipoles and 39 sets of combined multipoles,spanning a length of approximately 180 m.The dipoles are constructed using warm iron superferric technology.Meanwhile,the combined multipoles feature a coil dominated DCT(Discrete Cosine-Theta)coil structure,offering a large aperture,high polar field,compact design,and robust operation.
文摘High Intensity heavy ion Accelerator Facility(HIAF)consists of a Super-conducting ECR Ion Source(SECR),Superconducting linac(iLinac),Booster Ring(BRing),Fragment Separator(HFRS),Spectrometer Ring(SRing),and several transport lines and terminals.It contains more than 600 room-temperature magnets,100 superconducting magnets,and a range of injection and extraction components.The latest general layout of the HIAF is shown in Fig.1.
文摘Last year,the MTG(Magnet Technology Group)undertaken the magnet development formany accelerators such as High Intensity heavy ion Accelerator Facility(HIAF),China initiative Accelerator Driven System(CiADS),Space.Environment Simulation and Research Infrastructure(SESRI).
文摘The models of quench analysis of CiADS superconducting magnets are displayed in Fig.1.Three structures of superconducting magnet are designed and the stored energies are 6.5 kJ for sol.1.
文摘Puremultipolar magnetic field is an ideal field derived from the formula and it is very useful for scientific research Discrete-Cosine-Theta(DCT)and Canted-Cosine-Theta(CCT)coils as shown in Figs.
文摘The fourth-generation 45 GHz ECR source(FECR)is under development in the Institute of Modern Physics.One of the critical components of FECR is the Nb_(3)Sn sextupole coil with a length of 937.4 mm.
