A foil–microchannel plate(MCP)detector,which uses electrostatic lenses and possesses both good position and timing resolutions,has been designed and simulated for beam diagnostics and mass measurements at the next-ge...A foil–microchannel plate(MCP)detector,which uses electrostatic lenses and possesses both good position and timing resolutions,has been designed and simulated for beam diagnostics and mass measurements at the next-generation heavy-ion-beam facility HIAF in China.Characterized by low energy loss and good performances of timing and position measurements,it would be located at focal planes in fragment separator HFRS for position monitoring,beam turning,Bq measurement,and trajectory reconstruction.Moreover,it will benefit the building-up of a magnetic-rigidity–energy-loss–time-offlight(BqDETOF)method at HFRS for high-precision in-flight particle identification of radioactive isotope beams on an event-by-event basis.Most importantly,the detector can be utilized for in-ring TOF and position measurements,beam-line TOF measurements at two achromatic foci,and position measurements at a dispersive focus of HFRS,thus making it possible to use two complementary mass measurement methods[isochronous mass spectrometry at the storage ring SRing and magnetic-rigidity–time-of-flight(BqTOF)at the beam-line HFRS]in one single experimental run.展开更多
The research activities on warm dense matter driven by intense heavy ion beams at the new project High Intensity heavy-ion AcceleratorFacility (HIAF) are presented. The ion beam parameters and the simulated accessible...The research activities on warm dense matter driven by intense heavy ion beams at the new project High Intensity heavy-ion AcceleratorFacility (HIAF) are presented. The ion beam parameters and the simulated accessible state of matter at HIAF are introduced, respectively. Theprogresses of the developed diagnostics for warm dense matter research including high energy electron radiography, multiple-channel pyrometer,in-situ energy loss and charge state of ion detector are briefly introduced.展开更多
A large scale scienti c research platform, named the High Intensity heavy-ion Accelerator Facility (HIAF), was proposed in light of the trend and development in nuclear physics and the associated high energy heavy ion...A large scale scienti c research platform, named the High Intensity heavy-ion Accelerator Facility (HIAF), was proposed in light of the trend and development in nuclear physics and the associated high energy heavy ion research elds. HIAF is one of the 16 approved national projects for basic sciences and technologies as the 12th ve-year-plan in China; it will be a laboratory open to the outside world, similar to CSR which was built as the 9th ve-year-plan in China[1].展开更多
The cryogenic system provides superfluid helium cooling power for the superconducting linac,which is a necessary condition for its operation.In 2022,significant progress has been made with the cryogenic system.
Kicker power supply is one of the key components of the high-intensity heavy ion accelerator HIAF.It is also one of the main components to achieve fast extraction of the beam from BRing and fast injection of the beam ...Kicker power supply is one of the key components of the high-intensity heavy ion accelerator HIAF.It is also one of the main components to achieve fast extraction of the beam from BRing and fast injection of the beam to SRing.Table 1 shows the technical indicators of the BRing Kicker power supply and SRing Kicker power supply.It adopts the scheme of Blumlein-PFN and thyratron solution.展开更多
In the framework of the HIAF fragment separator,about 50 superconducting magnets using Canted-Cosine-Theta coil configuration will be installed.As a proof of concept,0.8 m long multipole prototype magnet has been desi...In the framework of the HIAF fragment separator,about 50 superconducting magnets using Canted-Cosine-Theta coil configuration will be installed.As a proof of concept,0.8 m long multipole prototype magnet has been designed and fabricated to demonstrate its feasibility.A summary of the main parameters is given in Table 1.展开更多
The HIAF control network undertakes the operation of the whole HIAF facility and the big data transmission of each experimental terminal.It is an indispensable part for the HIAF construction and operation period.This ...The HIAF control network undertakes the operation of the whole HIAF facility and the big data transmission of each experimental terminal.It is an indispensable part for the HIAF construction and operation period.This system should have the characteristics of stable,advanced,flexible and highly available while meet the requirements of HIAF operation and data transmission,user service and efficient operation and maintenance.展开更多
Last year,obvious progresses have been made with electrical engineering and electromagnetic compatibility system for HIAF.Detailed equipment layout and three-dimensional design of bridge cables are devised for all dis...Last year,obvious progresses have been made with electrical engineering and electromagnetic compatibility system for HIAF.Detailed equipment layout and three-dimensional design of bridge cables are devised for all distribution room.Power distribution scheme for dipole magnet power supply of BRing is optimized according to its characteristics.The dual-low-voltage transformer of 1250 kVA is applied to this power supply independently,and the process of its design and order are completed.(Figs.1 and 2)展开更多
Design and development of the beam instruments for the HIAF project.By the end of 2022,we have completed the design and beam tests of almost all types of beam instruments for HIAF,and most of the beam diagnostics indu...Design and development of the beam instruments for the HIAF project.By the end of 2022,we have completed the design and beam tests of almost all types of beam instruments for HIAF,and most of the beam diagnostics induments for HIAF iLinac,booster ring(BRing)and HFRS are entering the batch fabrication stage.Most of the key detector models have already been tested with beam at IMP,for example the wall current monitor,the diagonal-cut type beam position monitor for BRing,the strip-line type beam position monitor for HFRS,the beam loss monitor and so on,which are proved to meet our project requirements.展开更多
High Intensity heavy-ion Accelerator Facility(HIAF)is designed by the Institute of Modern Physics,Chinese Academy of Sciences,which can accelerate particles form proton up to uranium.As shown in Fig.1,HIAF is composed...High Intensity heavy-ion Accelerator Facility(HIAF)is designed by the Institute of Modern Physics,Chinese Academy of Sciences,which can accelerate particles form proton up to uranium.As shown in Fig.1,HIAF is composed of the following parts:Superconducting Electron Cyclotron Resonance(SECR)ion source.展开更多
Some significant progress has been made for HIAF vacuum system in 2022,such as the development of the ultra-thin wall XHV chamber with titanium alloy lining(a key technology of HIAF),the construction of BRing demonstr...Some significant progress has been made for HIAF vacuum system in 2022,such as the development of the ultra-thin wall XHV chamber with titanium alloy lining(a key technology of HIAF),the construction of BRing demonstration section in Tianshui,the procurement of most vacuum acquisition equipment,and so on.展开更多
A Quarter Wave Resonator(QWR)has been designed for the HIAF(High Intensity heavy ion Accelerator Facility)project.Working at 81.25 MHz,the QWR accelerates heavy ion beams from 0.8 to 5.3 MeV in the high Intensity heav...A Quarter Wave Resonator(QWR)has been designed for the HIAF(High Intensity heavy ion Accelerator Facility)project.Working at 81.25 MHz,the QWR accelerates heavy ion beams from 0.8 to 5.3 MeV in the high Intensity heavy ion superconducting LINAC section of HIAF.展开更多
For the purpose of better performance,running stability and efficiency of CiADS and HIAF Superconducting Proton linac system,2K superfluid helium will be adopted for superconducting cavity cooling due to its specific ...For the purpose of better performance,running stability and efficiency of CiADS and HIAF Superconducting Proton linac system,2K superfluid helium will be adopted for superconducting cavity cooling due to its specific properties,such as high thermal conductivity,low viscosity.展开更多
1.National Investment Component of HIAF HIAF civil construction covers about 33025.51 m2 in total that are jointly supported by the National investment and local government.The actual construction scale of national in...1.National Investment Component of HIAF HIAF civil construction covers about 33025.51 m2 in total that are jointly supported by the National investment and local government.The actual construction scale of national investment in High Intensity Heavy-ion Accelerator Facility(HIAF)civil engineering is about 33025.51 m^(2).展开更多
The 100 kV electron cooler device is designed for the new project HIAF to improve beam quality in SRing[1,2].The design work of the electron gun and the collector for the cooler has been finished and the prototype has...The 100 kV electron cooler device is designed for the new project HIAF to improve beam quality in SRing[1,2].The design work of the electron gun and the collector for the cooler has been finished and the prototype has being manufactured in the workshop.The structures of the gun and collector are shown in Fig.1.展开更多
All power supplies in HIAF are fully digitally controlled.A new generation of FPGA-based digital controllers,named the SZF-3 series have been developed and upgraded.High-speed serial communication is used to realize m...All power supplies in HIAF are fully digitally controlled.A new generation of FPGA-based digital controllers,named the SZF-3 series have been developed and upgraded.High-speed serial communication is used to realize master-slave control.And a distributed real-time high computing performance control system combined with a 10-Gigabit optical communication network is designed.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
The super ferric superconducting dipoles are in development for the High Intensity high Energy FRagment Separator(HFRS)of the Heavy-ion Accelerator Facility(HIAF).The dipole magnets of the separator will have a deflec...The super ferric superconducting dipoles are in development for the High Intensity high Energy FRagment Separator(HFRS)of the Heavy-ion Accelerator Facility(HIAF).The dipole magnets of the separator will have a deflection radius of 15.7 m,a field up to 1.6 T with a 320 mm wide good field region and an effective length of 2.74 m.In the HIAF-HFRS,there will be a total of 11 super ferric dipoles.The dipole consists of two superconducting coils,a coil box,a cryostat,and a warm iron warm laminated iron,as shown in Fig.1.The superconducting coils are protected by the active quench protection.展开更多
基金supported by the National Natural Science Foundation of China(Nos.11605248,11605249,11605267,and 11805032.)
文摘A foil–microchannel plate(MCP)detector,which uses electrostatic lenses and possesses both good position and timing resolutions,has been designed and simulated for beam diagnostics and mass measurements at the next-generation heavy-ion-beam facility HIAF in China.Characterized by low energy loss and good performances of timing and position measurements,it would be located at focal planes in fragment separator HFRS for position monitoring,beam turning,Bq measurement,and trajectory reconstruction.Moreover,it will benefit the building-up of a magnetic-rigidity–energy-loss–time-offlight(BqDETOF)method at HFRS for high-precision in-flight particle identification of radioactive isotope beams on an event-by-event basis.Most importantly,the detector can be utilized for in-ring TOF and position measurements,beam-line TOF measurements at two achromatic foci,and position measurements at a dispersive focus of HFRS,thus making it possible to use two complementary mass measurement methods[isochronous mass spectrometry at the storage ring SRing and magnetic-rigidity–time-of-flight(BqTOF)at the beam-line HFRS]in one single experimental run.
基金This work was supported by the National Science Foun-dation of China(NSFC,Grant Nos.U1532263,11205225,11275241,11375034,11505248 and 11275238).
文摘The research activities on warm dense matter driven by intense heavy ion beams at the new project High Intensity heavy-ion AcceleratorFacility (HIAF) are presented. The ion beam parameters and the simulated accessible state of matter at HIAF are introduced, respectively. Theprogresses of the developed diagnostics for warm dense matter research including high energy electron radiography, multiple-channel pyrometer,in-situ energy loss and charge state of ion detector are briefly introduced.
文摘A large scale scienti c research platform, named the High Intensity heavy-ion Accelerator Facility (HIAF), was proposed in light of the trend and development in nuclear physics and the associated high energy heavy ion research elds. HIAF is one of the 16 approved national projects for basic sciences and technologies as the 12th ve-year-plan in China; it will be a laboratory open to the outside world, similar to CSR which was built as the 9th ve-year-plan in China[1].
文摘The cryogenic system provides superfluid helium cooling power for the superconducting linac,which is a necessary condition for its operation.In 2022,significant progress has been made with the cryogenic system.
文摘Kicker power supply is one of the key components of the high-intensity heavy ion accelerator HIAF.It is also one of the main components to achieve fast extraction of the beam from BRing and fast injection of the beam to SRing.Table 1 shows the technical indicators of the BRing Kicker power supply and SRing Kicker power supply.It adopts the scheme of Blumlein-PFN and thyratron solution.
文摘In the framework of the HIAF fragment separator,about 50 superconducting magnets using Canted-Cosine-Theta coil configuration will be installed.As a proof of concept,0.8 m long multipole prototype magnet has been designed and fabricated to demonstrate its feasibility.A summary of the main parameters is given in Table 1.
文摘The HIAF control network undertakes the operation of the whole HIAF facility and the big data transmission of each experimental terminal.It is an indispensable part for the HIAF construction and operation period.This system should have the characteristics of stable,advanced,flexible and highly available while meet the requirements of HIAF operation and data transmission,user service and efficient operation and maintenance.
文摘Last year,obvious progresses have been made with electrical engineering and electromagnetic compatibility system for HIAF.Detailed equipment layout and three-dimensional design of bridge cables are devised for all distribution room.Power distribution scheme for dipole magnet power supply of BRing is optimized according to its characteristics.The dual-low-voltage transformer of 1250 kVA is applied to this power supply independently,and the process of its design and order are completed.(Figs.1 and 2)
文摘Design and development of the beam instruments for the HIAF project.By the end of 2022,we have completed the design and beam tests of almost all types of beam instruments for HIAF,and most of the beam diagnostics induments for HIAF iLinac,booster ring(BRing)and HFRS are entering the batch fabrication stage.Most of the key detector models have already been tested with beam at IMP,for example the wall current monitor,the diagonal-cut type beam position monitor for BRing,the strip-line type beam position monitor for HFRS,the beam loss monitor and so on,which are proved to meet our project requirements.
文摘High Intensity heavy-ion Accelerator Facility(HIAF)is designed by the Institute of Modern Physics,Chinese Academy of Sciences,which can accelerate particles form proton up to uranium.As shown in Fig.1,HIAF is composed of the following parts:Superconducting Electron Cyclotron Resonance(SECR)ion source.
文摘Some significant progress has been made for HIAF vacuum system in 2022,such as the development of the ultra-thin wall XHV chamber with titanium alloy lining(a key technology of HIAF),the construction of BRing demonstration section in Tianshui,the procurement of most vacuum acquisition equipment,and so on.
文摘A Quarter Wave Resonator(QWR)has been designed for the HIAF(High Intensity heavy ion Accelerator Facility)project.Working at 81.25 MHz,the QWR accelerates heavy ion beams from 0.8 to 5.3 MeV in the high Intensity heavy ion superconducting LINAC section of HIAF.
文摘For the purpose of better performance,running stability and efficiency of CiADS and HIAF Superconducting Proton linac system,2K superfluid helium will be adopted for superconducting cavity cooling due to its specific properties,such as high thermal conductivity,low viscosity.
文摘1.National Investment Component of HIAF HIAF civil construction covers about 33025.51 m2 in total that are jointly supported by the National investment and local government.The actual construction scale of national investment in High Intensity Heavy-ion Accelerator Facility(HIAF)civil engineering is about 33025.51 m^(2).
基金National Natural Science foundation of China(11575264,11375245,11475235)Hundred Talents Project of CAS。
文摘The 100 kV electron cooler device is designed for the new project HIAF to improve beam quality in SRing[1,2].The design work of the electron gun and the collector for the cooler has been finished and the prototype has being manufactured in the workshop.The structures of the gun and collector are shown in Fig.1.
文摘All power supplies in HIAF are fully digitally controlled.A new generation of FPGA-based digital controllers,named the SZF-3 series have been developed and upgraded.High-speed serial communication is used to realize master-slave control.And a distributed real-time high computing performance control system combined with a 10-Gigabit optical communication network is designed.
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The super ferric superconducting dipoles are in development for the High Intensity high Energy FRagment Separator(HFRS)of the Heavy-ion Accelerator Facility(HIAF).The dipole magnets of the separator will have a deflection radius of 15.7 m,a field up to 1.6 T with a 320 mm wide good field region and an effective length of 2.74 m.In the HIAF-HFRS,there will be a total of 11 super ferric dipoles.The dipole consists of two superconducting coils,a coil box,a cryostat,and a warm iron warm laminated iron,as shown in Fig.1.The superconducting coils are protected by the active quench protection.
