Author: Yang, J.J.
Paper Title Page
TUPSH003 Conceptual Design of a 100 MeV Injector Cyclotron 224
  • M. Li, J.J. Yang, T.J. Zhang, J.Q. Zhong
    CIAE, Beijing, People's Republic of China
  Accelerator driven system (ADS) is advanced clean nuclear energy system based on a high power accelerator, which has been proposed worldwide in recent years. Referring to the experiences from the existing PSI high power proton facility, an 800 MeV cyclotron is under design at CIAE (China Institute of Atomic Energy) as a candidate of high power proton driver. Given the extremely high beam power to be extracted, a tiny beam loss can lead to disastrous result for the cyclotron. Especially, the beam loss during extraction is the critical issue with respect to the feasibility and reliability of the design, which needs to be investigated in great detail from the very beginning. In this paper, the extraction scheme and beamline elements design are presented, and the detailed beam loss distribution during extraction will be calculated by numerical simulation with the large-scale parallel code OPAL-CYCL.  
WEPPT030 High Intensity Compact Cyclotron for ISODAR Experiment 384
  • D. Campo, J.R. Alonso, W.A. Barletta, L.M. Bartoszek, A. Calanna, J.M. Conrad, M. Toups
    MIT, Cambridge, Massachusetts, USA
  • A. Adelmann
    PSI, Villigen PSI, Switzerland
  • L. Calabretta, C. Cui, G. Gallo
    INFN/LNS, Catania, Italy
  • R. Gutierrez-Martinez, L.A. Winslow
    UCLA, Los Angeles, USA
  • M. Shaevitz
    Columbia University, New York, USA
  • J.J. Yang
    CIAE, Beijing, People's Republic of China
  IsoDAR is an experiment proposed to look for the existence of sterile neutrinos. These are additional neutrino states beyond the "standard" 3-nu paradigm, are predicted to exist to explain anomalies in several neutrino experiments. In IsoDAR (Isotope Decay At Rest), electron antineutrinos produced in a target ~15 meters from a kiloton-scale detector would oscillate into and out of the sterile state within the extent of the detector, producing a sinusoidal event rate as a function of distance from the target. The nu-e-bar flux arises from decay of 8Li, produced when a high-current beam of protons or deuterons strikes a beryllium target either directly, or via secondary neutrons that interact in a large, ultra-pure 7Li sleeve surrounding the target. A compact Q/A = 0.5 cyclotron with top energy of 60 MeV/amu will be installed underground close to KamLAND. This cyclotron is a prototype for the DAEδALUS cyclotron chain (Paper WEPPT030). With a central field of 1.075T, it will operate in the 4th harmonic. Preliminary designs will be described, as well as possible solutions for transport and assembly of the machine through the very constricted access apertures of the Kamioka mine.