• S. Fu, H. Chen, Y.W. Chen, Y.L. Chi, C.D. Deng, H. Dong, L. Dong, S.X. Fang, W. He, K.X. Huang, W. Kang, X.C. Kong, J. Li, H.F. Ouyang, Q. Qin, H. Qu, C. Shi, H. Sun, J. Tang, S. Wang, J. Wei, T. Wei, T.G. Xu, Z.X. Xu, X. Yin, J. Zhang, Z.H. Zhang
  IHEP Beijing, Beijing

CSNS accelerator mainly consists of an H^- linac and a proton rapid cycling synchrotron. It is designed to accelerate proton beam pulses to 1.6 GeV kinetic energy at 25 Hz repetition rate, striking a solid metal target to produce spallation neutrons. The accelerator is designed to deliver a beam power of 120 kW with the upgrade capability up to 500 kW, The CSNS accelerator is the first large-scale, high-power accelerator project to be constructed in China and thus we are facing a lot of challenges in some key technologies. A series of R&D for major prototypes have being conducted since 2006, including an H^- ion source, DTL tank, RF power supply for the linac, injection/extraction magnets and its pulse power supplies, dipole and quadrupole prototype magnets in the ring and its power supplies, ferrite-loaded RF prototype cavity, ceramic vacuum chamber, control and some beam diagnostics. This paper will briefly introduce the design and R&D status of the CSNS accelerator.

Slides

• J. Wei, H. Chen, W.-H. Huang, C.-X. Tang, Q.Z. Xing
  TUB, Beijing
• S. Fu, J. Tao
  IHEP Beijing, Beijing
• X. Guan
  CIAE, Beijing
• C.-K. Loong
  ANL, Argonne
• H.M. Shimizu
  KEK, Tsukuba

Funding: Supported by the “985 Project” of the Minister of Education of China, CAS Bairen Init. (KJCX2-YW-N22), CAS Overseas Outstanding Youth Program, and the National Natural Science Foundation (10628510).

During the past decades, large-scale national neutron sources are developed in Asia, Europe, and USA. Complementing such efforts, compact hadron beam complexes and neutron sources intended for universities and industrial institutes are proposed and established. Responding to the demands in China for multidisciplinary researches and applications using pulsed neutrons and protons, hadron therapy and radiography, and accelerator-driven sub-critical reactor systems (ADS) for nuclear waste transmutation, we here propose a compact yet expandable accelerator complex based on a proton source, a 3 MeV RFQ linac, and a 22 MeV DTL linac. A Be target with solid methane and room-temperature water moderators serve 6 neutron stations for imaging/radiography, irradiation, SANS, engineering powder diffraction, instrumentation, and therapy. The proton platform serves multiple stations for bio-applications, fuel cell and nano-applications, and space irradiation and detection. A rapid cycling synchrotron subsequently accelerates the beam to up to 300 MeV for proton therapy and radiography. Following the DTL linac with a superconducting RF linac and a sub-critical reactor offers an ADS test facility.