Author: Gallo, G.
Paper Title Page
TU2PB02 The New Axial Buncher at INFN-LNS 147
  • A.C. Caruso, G. Gallo, A. Longhitano
    INFN/LNS, Catania, Italy
  • F. Consoli
    Associazione Euratom-ENEA sulla Fusione, Frascati (Rome), Italy
  • P.Z. Li
    CIAE, Beijing, People's Republic of China
  • J. Sura
    Warsaw University, Warsaw, Poland
  A new axial buncher for the K-800 superconducting cyclotron is under construction at LNS. This new device will replace the present buncher installed along the vertical beam line, inside the yoke of the cyclotron at about half a metre from the medium plane. Maintenance and technical inspection are very difficult to carry out in this situation. The new buncher will still be placed along the axial beam line, just before the bottom side of the cyclotron yoke. It consists of a drift tube driven by a sinusoidal RF signal in the range of 15-50 MHz, a matching box, an amplifier, and an electronic control system. A more accurate mechanical design of the beam line portion will allow for the direct electric connection of the matching box to the ceramic feed-through and drift tube. This particular design will minimize, or totally avoid, any connection through coaxial transmission line. It will reduce the entire geometry, the total RF power and the maintenance. In brief, the new axial buncher will be a compact system including beam line portion, drift tube, ceramic feed-through, matching box, amplifier and control system interface in a single structure.  
slides icon Slides TU2PB02 [7.623 MB]  
WEPPT028 Proposal for High Power Cyclotrons Test Site in Catania 378
  • L. Calabretta, D. Campo, L. Celona, L. Cosentino, C. Cui, G. Gallo, D. Rifuggiato
    INFN/LNS, Catania, Italy
  • J.R. Alonso, W.A. Barletta, A. Calanna, D. Campo, J.M. Conrad
    MIT, Cambridge, Massachusetts, USA
  • R.R. Johnson
    BCSI, Vancouver, BC, Canada
  • L. AC. Piazza
    INFN/LNL, Legnaro (PD), Italy
  The IsoDAR and DAEδALUS experiments will use cyclotrons to deliver high intensity (10 mA peak current) proton beams to neutrino-producing targets. To achieve these very high currents, we plan to inject and accelerate molecular H2+ ions in the cyclotrons. To understand high intensity H2+ injection into the central region of a compact cyclotron, and to benchmark space-charge dominated simulation studies, central-region tests are being conducted. Building on the first experiments at Best Cyclotrons, Vancouver (Abstract 1261), a larger-scale test cyclotron will be built at INFN-LNS in Catania. This cyclotron will be designed for 7 MeV/n (Q/A = 0.5; H2+ or He++). After the first year of operation dedicated at optimization of the central region for the injection of high intensity Q/A = 0.5 beams, the cyclotron will be modified to allow the acceleration of H up to an energy of 28 MeV. The main characteristics of the machine and the planned test stand will be presented.  
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.