Author: Hatanaka, K.
Paper Title Page
MOPEA031 Study of Extraction and Transport of Intense Highly Charged Ions for 18GHz SC-ECRIS at RCNP 145
  • T. Yorita, M. Fukuda, K. Hatanaka, K. Kamakura, S. Morinobu, A. Tamii, Y. Yasuda
    RCNP, Osaka, Japan
  An 18 GHz superconducting ECRIS has also been installed to increase beam currents and to extend the variety of ions, especially for highly charged heavy ions which can be accelerated by RCNP cyclotrons. The mirror magnetic field is produced with four liquid-helium-free superconducting coils and the permanent magnet hexapole is of Halbach type with 24 pieces of NEOMAX-44H material. The production development of several ions like B, O, N, Ne, Ar, Ni, Kr and Xe has been performed. Further study for its beam extraction and transport have been done in order to increase the beam injected to cyclotron. The parameters of extraction systems and electrostatic lens are optimized taking account with magnetic field leakage from AVF Cyclotron. Emittance study also has been done to see the quality of injection beam. For that purpose two types of emittance monitor have been developed. One is using three wire profile monitor and another has BPM with rotating wire for quick measurement. The details of these developments will be presented.  
THPME007 HTS Magnet to Polarize Ultra Cold Neutrons 3522
  • K. Hatanaka, M. Fukuda, N. Hamatani, K. Kamakura, T. Saito, H. Ueda, Y. Yasuda, T. Yorita
    RCNP, Osaka, Japan
  • T. Kawaguchi
    KT Science Ltd., Akashi, Japan
  We have developed magnets using High Temperature Superconductor (HTS) wires for this decade. A HTS magnet was designed and fabricated to polarize ultra cold neutrons (UCN). It consists of 10 double pancakes and the number of the total winding is 2,800 turns. The inner diameter of the coil is 131.5 mm and the coil is 105 mm long. The coil is conduction cooled by a pulse tube cryocooler and the operating temperature is expected to be 20 K. The maximum rated current is 200 A and the magnetic field is higher than 3.5 T at the center. Results of cooling tests and field measurements are presented.