WEIP —  Plenary Session - Preparations for Future Machines   (06-Oct-21   09:00—10:00)
Chair: S.M. Cousineau, ORNL, Oak Ridge, Tennessee, USA
Paper Title Page
CiADS Project: Next Phase and Linac Commissioning Results  
  • Y. He, Q. Chen, W.L. Chen, Y.X. Chen, W.P. Dou, C. Feng, Z. Gao, G. Huang, H. Jia, T.C. Jiang, S.H. Liu, Z.J. Wang, F. Yang, S.H. Zhang, H.W. Zhao
    IMP/CAS, Lanzhou, People’s Republic of China
  Funding: Supported by Strategic Priority Research Program of CAS Grant No. XDA03020000; Nature Science Funding Grant No. 91426303; Nature Science Funding Grant No. 11525523
China initiative Accelerator Driven System (CiADS) is to demostrate the feasibility of nuclear waste transmutition by using ADS. It will be the world first MW ADS facility. It consists of a supercondcuting linac with energy of 500 MeV and current of 5 mA, a Lead-Bismuth Eutectic (LBE) target and a fast LBE reactor with 10 MWt. The project period is 6 years. The budget of CiADS was approved in July 2021 and started constructing. The updating design will be introduced. A superconducting linac, CAFe, has been constructed since 2011 to demostrated the technologies of high intensity of 10 mA and high reliability for ADS. It got the first 25 MeV continuous-wave (CW) proton in 2017. It was impproved in the past 3 years and just achieved the record of 10 mA, 205 kW, CW proton beam in March. A non-stop operation of 108 hours at around 7 mA was done to test the reliablity. Most trips was recovered with 10 seconds and the availability is more than 93%. The beam dynamic will be compared with the diagnostics’ results at differenct beam current. It shows the indenpendence with the beam current. The mechine protection stratigy towards the availability will also be introduced.
slides icon Slides WEIPI1 [13.928 MB]  
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High Intensity Beam Dynamics Preparations for FAIR  
  • O. Boine-Frankenheim
    GSI, Darmstadt, Germany
  The FAIR accelerator complex is designed to deliver heavy ions beams of unprecedented beam intensity and quality. Such beams will enable high yield in-flight production of exotic nuclei and their precise identification at high energies, for example. Intense primary ion beams will be delivered to the new SIS100 synchrotron from the upgraded UNILAC/SIS18 complex. Both, the existing SIS18 and the new SIS100 will be operated at the ’space charge limit’ for light and heavy ion beams. Only due to the recent advances in the performance of particle tracking tools with self-consistent 3D space charge solvers we were able to reliably identify low-loss areas in tune space over the full 1 s accumulation plateau in SIS100. A realistic magnet error model, extracted from bench measurements, is included in the simulations. Different measures are proposed to enlarge the low-loss area and to further increase the space charge limit. A key rf manipulation in SIS100 will be the single bunch generation and compression before extraction to the production targets. Simulation results to prepare for the later operation will be shown.  
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