Two room temperature quarter wave resonator（QWR）buncher cavities with frequency of 162.5 MHz havebeen designed as parts of the medium energy beam transport line（MEBT1）for injectorⅡin China AcceleratorDriven Sub-c...Two room temperature quarter wave resonator（QWR）buncher cavities with frequency of 162.5 MHz havebeen designed as parts of the medium energy beam transport line（MEBT1）for injectorⅡin China AcceleratorDriven Sub-critical System (C-ADS) project in order to focus the beam longitudinally, thus keeping the bunchlength and matching the beam to the acceptance of the superconducting linac.Buncher is one of major equipments in MEBT1. Fig. 1 shows the layout of the MEBT1. Its structure directlyaffects the performance of MEBT1. Buncher cavity takes an open-ended quarter-wavelength coaxial line cylindertype structure, the mechanical design of buncher cavity was done according to the physical design, adequate considerationought to be given to the factors of electromagnetic field distribution, power coupling, frequency tuning,cavity cooling and manufacturing, and so on.展开更多
An Aluminum alloy beam dump was used to stop the 34 kW CW proton beam during the commissioning of the superconducting demo LINAC of ADS at the beginning of 2019.It was damaged after 100 h operation with more than 30 k...An Aluminum alloy beam dump was used to stop the 34 kW CW proton beam during the commissioning of the superconducting demo LINAC of ADS at the beginning of 2019.It was damaged after 100 h operation with more than 30 kW beam power.展开更多
Dipole magnet is an important unit in accelerator system,which is typically used to bend energetic ion beams[1].The ADS prototype superconducting linac,uses dipole magnet with no datum hole on the top surface,as indic...Dipole magnet is an important unit in accelerator system,which is typically used to bend energetic ion beams[1].The ADS prototype superconducting linac,uses dipole magnet with no datum hole on the top surface,as indicated in Fig.1 with notation No.8.展开更多
The CADS demo facility is aimed to build a prototype linac for the low energy part of the continuous wave(CW)superconducting proton linac and demonstrate technology in this section[1].In the CADS roadmap,the realizati...The CADS demo facility is aimed to build a prototype linac for the low energy part of the continuous wave(CW)superconducting proton linac and demonstrate technology in this section[1].In the CADS roadmap,the realization of 25 MeV 10 mA beam is a key point.Thus,based on the 10 MeV CADS Injector II at IMP,IMP and IHEP will both contribute a cryomodule to reach 25 MeV at the site of IMP[2].To dump the beam from the linac,we build a new high energy beam transport line with bending angle of 90°,to avoid back-scattering gamma and neutron beams to damage the linac.Fig.1 shows the layout of the 25 MeV demo facility.展开更多
文摘Two room temperature quarter wave resonator（QWR）buncher cavities with frequency of 162.5 MHz havebeen designed as parts of the medium energy beam transport line（MEBT1）for injectorⅡin China AcceleratorDriven Sub-critical System (C-ADS) project in order to focus the beam longitudinally, thus keeping the bunchlength and matching the beam to the acceptance of the superconducting linac.Buncher is one of major equipments in MEBT1. Fig. 1 shows the layout of the MEBT1. Its structure directlyaffects the performance of MEBT1. Buncher cavity takes an open-ended quarter-wavelength coaxial line cylindertype structure, the mechanical design of buncher cavity was done according to the physical design, adequate considerationought to be given to the factors of electromagnetic field distribution, power coupling, frequency tuning,cavity cooling and manufacturing, and so on.
文摘An Aluminum alloy beam dump was used to stop the 34 kW CW proton beam during the commissioning of the superconducting demo LINAC of ADS at the beginning of 2019.It was damaged after 100 h operation with more than 30 kW beam power.
文摘Dipole magnet is an important unit in accelerator system,which is typically used to bend energetic ion beams[1].The ADS prototype superconducting linac,uses dipole magnet with no datum hole on the top surface,as indicated in Fig.1 with notation No.8.
文摘The CADS demo facility is aimed to build a prototype linac for the low energy part of the continuous wave(CW)superconducting proton linac and demonstrate technology in this section[1].In the CADS roadmap,the realization of 25 MeV 10 mA beam is a key point.Thus,based on the 10 MeV CADS Injector II at IMP,IMP and IHEP will both contribute a cryomodule to reach 25 MeV at the site of IMP[2].To dump the beam from the linac,we build a new high energy beam transport line with bending angle of 90°,to avoid back-scattering gamma and neutron beams to damage the linac.Fig.1 shows the layout of the 25 MeV demo facility.
