Author: Hamatani, N.
Paper Title Page
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.