Purpose The machine protection system(MPS)is an essential part of the BRing(Booster Ring)at the HIAF(High Intensity heavy ion Accelerator Facility)to protect the accelerator from possible accidents.The high accumulati...Purpose The machine protection system(MPS)is an essential part of the BRing(Booster Ring)at the HIAF(High Intensity heavy ion Accelerator Facility)to protect the accelerator from possible accidents.The high accumulation intensity and the complex operation mode of the BRing require MPS to respond quickly and operate stably.So,the detailed physical scheme of beam dump is proposed,and the corresponding simulation results are discussed in this paper.Method For this purpose,a multi-phased beam dump scheme based on the bipolar operation of fast extraction kicker magnets is proposed.The basic physical dimensions of the stoppers and energy deposited analysis have been calculated.Results and conclusion The multi-phased beam dump scheme is able to meet the engineering requirements,and the stopping efficiency can reach 100%for bunched beam.展开更多
Purpose HIRFL-CSR(Heavy Ion Research Facility in Lanzhou,Cooler Storage Ring)is a heavy-ion accelerator facility at IMP(Institute of Modern Physics,Chinese Academy of Sciences).Due to the diverse physics research requ...Purpose HIRFL-CSR(Heavy Ion Research Facility in Lanzhou,Cooler Storage Ring)is a heavy-ion accelerator facility at IMP(Institute of Modern Physics,Chinese Academy of Sciences).Due to the diverse physics research requirements,including higher beam intensity and quality,in recent years,a new high-level accelerator control system,PACS(Physics-oriented Accelerator Control System),was designed and deployed in the HIRFL-CSR facility.However,as more and more complex beam commissioning needs the cooperation of multiple beam dynamics modules,which are developed independently by different accelerator physicists,it is necessary to design a framework to integrate any new beam dynamics modules and guarantee cooperation between new and existing beam dynamics modules.Method The integrated beam dynamics framework consists of the unified dynamics interface,the general dynamics scheduler and the multi-user queue.The unified dynamics interface ensures the independence of each beam dynamics module and isolates data from each beam dynamics module.The general dynamics scheduler forms beam dynamics chains from different beam dynamics modules,simplifying beam commissioning.The multi-user queue ensures that all users can access all beam dynamics modules simultaneously.Results Various beam dynamics modules are embedded in the framework,and these modules can collaborate with each other.This significantly improves the accuracy of beam commissioning and the efficiency of software development for accelerator physicists.Conclusion With the integrated beam dynamics framework,the efficiency of beam commissioning and the performance of HIRFL-CSR are significantly improved,which shows the framework is quite powerful for developing controls of complicated beam dynamics.HIAF(High Intensity heavy-ion Accelerator Facility)and EicC(Electron-Ion Collider in China)will employ many new beam dynamics schemes and innovative technologies to reach higher intensity or higher luminosity.The framework will play a vital role in building integrated,smart control systems and pushing performance boundaries of these next-generation facilities.展开更多
基金Thanks for the support from the National Key R&D Program of China(Grant NO.2019YFA0405400)National Natural Science Foundation of China(Grant No.11905268)the support from Guangdong Innovative and Entrepreneurial Research Team Program(Grant No.2016ZT06G373).
文摘Purpose The machine protection system(MPS)is an essential part of the BRing(Booster Ring)at the HIAF(High Intensity heavy ion Accelerator Facility)to protect the accelerator from possible accidents.The high accumulation intensity and the complex operation mode of the BRing require MPS to respond quickly and operate stably.So,the detailed physical scheme of beam dump is proposed,and the corresponding simulation results are discussed in this paper.Method For this purpose,a multi-phased beam dump scheme based on the bipolar operation of fast extraction kicker magnets is proposed.The basic physical dimensions of the stoppers and energy deposited analysis have been calculated.Results and conclusion The multi-phased beam dump scheme is able to meet the engineering requirements,and the stopping efficiency can reach 100%for bunched beam.
基金support from the National Key R&D Program of China(Grant No.2019YFA0405400)the support from Young Elite Scientists Sponsorship Program by CAST(Grant No.2023QNRC001)the support from the National Natural Science Foundation of China(Grant No.12105332).
文摘Purpose HIRFL-CSR(Heavy Ion Research Facility in Lanzhou,Cooler Storage Ring)is a heavy-ion accelerator facility at IMP(Institute of Modern Physics,Chinese Academy of Sciences).Due to the diverse physics research requirements,including higher beam intensity and quality,in recent years,a new high-level accelerator control system,PACS(Physics-oriented Accelerator Control System),was designed and deployed in the HIRFL-CSR facility.However,as more and more complex beam commissioning needs the cooperation of multiple beam dynamics modules,which are developed independently by different accelerator physicists,it is necessary to design a framework to integrate any new beam dynamics modules and guarantee cooperation between new and existing beam dynamics modules.Method The integrated beam dynamics framework consists of the unified dynamics interface,the general dynamics scheduler and the multi-user queue.The unified dynamics interface ensures the independence of each beam dynamics module and isolates data from each beam dynamics module.The general dynamics scheduler forms beam dynamics chains from different beam dynamics modules,simplifying beam commissioning.The multi-user queue ensures that all users can access all beam dynamics modules simultaneously.Results Various beam dynamics modules are embedded in the framework,and these modules can collaborate with each other.This significantly improves the accuracy of beam commissioning and the efficiency of software development for accelerator physicists.Conclusion With the integrated beam dynamics framework,the efficiency of beam commissioning and the performance of HIRFL-CSR are significantly improved,which shows the framework is quite powerful for developing controls of complicated beam dynamics.HIAF(High Intensity heavy-ion Accelerator Facility)and EicC(Electron-Ion Collider in China)will employ many new beam dynamics schemes and innovative technologies to reach higher intensity or higher luminosity.The framework will play a vital role in building integrated,smart control systems and pushing performance boundaries of these next-generation facilities.
