Author: Rifuggiato, D.
Paper Title Page
MOPPD027 A Compact High Intensity Cyclotron Injector for DAEδALUS Experiment 424
  • L. Calabretta, D. Rifuggiato
    INFN/LNS, Catania, Italy
  • A. Adelmann
    Paul Scherrer Institut, Villigen, Switzerland
  • A. Calanna, D. Campo
    CSFNSM, Catania, Italy
  • M.M. Maggiore, L.A.C. Piazza
    INFN/LNL, Legnaro (PD), Italy
  • J.J. Yang
    CIAE, Beijing, People's Republic of China
  Funding: Istituto Nazionale di Fisica Nucleare - Laboratori Nazionale del Sud.
The experiment DAEδALUS*, recently proposed by MIT scientist to search for CP violation in the neutrino sector, needs three accelerator with energy of about 800 MeV, average power of some MW and duty cycle of 20%. To reduce the cost of the accelerators a cyclotron complex consisting of an injector and of a booster ring cyclotron has been proposed**. The main characteristics of the new kind of separated sector cyclotron injector able to accelerate a H2+ molecule beam up to 60 MeV/n will be presented. Due to the low duty cycle, the peak current to be accelerated is 5 mA. The problem related to the injection of a H2+ beam, delivered by a compact ion source, and to the space charge effects will be discussed. To allow an easier injection in the booster Superconducting Ring Cyclotron the extraction energy has been increased up to 60 MeV/n. The pole gap was decreased to 60 mm to achieve a more efficient beam extraction. The updated configuration of the magnetic sectors, of the isochronous magnetic field and beam dynamics along extraction path and during the acceleration will be presented, too.
* J. Alonso et al., "Novel Search for CP Violation in the Neutrino Sector: DAEδALUS," Jun2010 e-Print: arXiv:1006.0260
** L. Calabretta, Proc. of IPAC 2011, WEPS073, p. 2673 (2011).
WEPPD062 Measurements of the First RF Prototype of the Spiral2 Single Bunch Selector 2663
  • M. Di Giacomo
    GANIL, Caen, France
  • A.C. Caruso, F. Consoli, G. Gallo, D. Rifuggiato, E. Zappalà
    INFN/LNS, Catania, Italy
  • A. Longhitano
    ALTEK, San Gregorio (CATANIA), Italy
  Funding: Work supported by EU commission 7th framework project n. 212692.
The single bunch selector of the Spiral2 driver uses 100 Ω travelling wave electrodes driven by fast pulse generators. A 2.5 kV, 1 kW feed-through and a vacuum chamber housing the water cooled electrodes have been designed and built. The paper reviews the whole design and reports the results of first RF and power measurements.