A-1 Project Needs and Challenges
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The FAST/IOTA Project at Fermilab  
  • A. Valishev
    Fermilab, Batavia, Illinois, USA
  Funding: Fermilab is operated by Fermi Research Alliance, LLC under Contract No. De-AC02-07CH11359 with the United States Department of Energy.
The Fermilab Accelerator Science and Technology (FAST) facility is being developed as a fully-equipped accelerator chain intended to support research and development of accelerator technology for the next generation of particle accelerators. The primary focus of this effort is the Integrable Optics Test Accelerator (IOTA) ring, which will be able to circulate either electrons with the energy of up to 150MeV, or 2.5MeV protons. The FAST electron injector is a state of the art superconducting RF linac capable of full ILC beam parameters and beam energy of up to 300MeV. The FAST accelerator science program focuses on high-intensity and high-brightness issues in the future machines for high-energy physics research. This talk will describe the facility design and status, review key beam physics experiments, and discuss the computational needs associated with the IOTA/FASt research.
slides icon Slides SAPLG02 [3.735 MB]  
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Urgent Need of Start-to-End Simulations for Shanghai CW Hard X-Ray FEL Project  
  • B. Liu, S. Chen, H.X. Deng, C. Feng, Q. Gu, D. Wang, Z. Wang, M. Zhang, Z.T. Zhao
    SINAP, Shanghai, People’s Republic of China
  Shanghai has started to construct the X-ray FEL facility SHINE (Shanghai high repetition rate XFEL and extreme light facility), which is based on a 8 GeV CW-SRF linac and will build three undulator lines in the first stage. Designs of the gun, the injector, the linac, the distribution section and the FEL lines have already been done and will be presented here. Prelimilary study shows that comprehensive study of the beam and FEL properties with start-to-end simulations is really necessary.  
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SHINE: Shanghai High Rep-rate XFEL and Extreme Light Facility  
  • D. Wang
    SINAP, Shanghai, People’s Republic of China
  • W. Wan
    ShanghaiTech University, Shanghai, People’s Republic of China
  SHINE (Shanghai High Rep-rate XFEL and Extreme Light Facility) is a Free Electron Laser facility providing intense x-ray photons at soft and hard X-ray regimes with high repetition rate up to 1 MHz. This new facility is located at Zhangjiang National Comprehensive Science Center, Shanghai, where also hosts other large facilities on photon science including Shanghai Synchrotron Radiation Facility (SSRF) and Soft X-ray Free Electron Laser Facility (SXFEL). With an overall length of about 3.1km the SHINE facility consists a linear accelerator yielding up to 8 GeV electorn beam, 3 long FEL undulator lines producing 0.4-25 keV coherent photons and 10 endstations for user experiments. The ground breaking of project took place in April, 2018. This talk will present the status of SHINE facility with an emphasis on accelerator machine.  
slides icon Slides SUPAG07 [11.228 MB]  
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TUPAG20 Computational Beam Dynamics Requirements for FRIB 303
  • P.N. Ostroumov, Y. Hao, T. Maruta, A.S. Plastun, T. Yoshimoto, T. Zhang, Q. Zhao
    FRIB, East Lansing, USA
  Funding: Work supported by the U.S. DOE of Science under Cooperative Agreement DE-SC0000661 and the NSF under Cooperative Agreement PHY-1102511, the State of Michigan and Michigan State University.
The Facility for Rare Isotope Beams (FRIB) being built at Michigan State University moved to the commissioned stage in the summer of 2017. There were extensive beam dynamics simulations in the FRIB driver linac during the design stage. Recently, we have used TRACK and IMPACT simulation codes to study dynamics of ion beam contaminants extracted from the ECR together with main ion beam. The contaminant ion species can produce significant losses after the stripping. These studies resulted in development of beam collimation system at relatively low energy of 16 MeV/u and room temperature bunchers instead of originally planned SC cavities. Commissioning of the Front End and the first 3 cryomodules enabled detailed beam dynamics studies experimentally which were accompanied with the simulations using above-mentioned beam dynamics codes and optimization code FLAME. There are significant challenges in understanding of beam dynamics in the FRIB linac. The most computational challenges are in the following areas: (1) Simulation of the ion beam formation and extraction from the ECR; (2) Development of the virtual accelerator model available on-line both for optimization and multi-particle simulations. The virtual model should include realistic accelerator parameters including device misalignments; (3) Large scale simulations to support high-power ramp up of the linac with minimized beam losses; (4) Interaction of the beam with the gas stripper which is the backup option for high power operation of the linac.
slides icon Slides TUPAG20 [5.721 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ICAP2018-TUPAG20  
About • paper received ※ 02 November 2018       paper accepted ※ 10 December 2018       issue date ※ 26 January 2019  
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