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Title: Design and development of a MgB{sub 2}-based sector dipole and beam transport channel for a strong-focusing cyclotron

A superconducting strong focusing cyclotron is being developed for high current applications. The ∼1 T sector dipoles incorporate superconducting main windings, and alternating-gradient focusing is provided by ∼6 Tm{sup –1} superconducting beam transport channels along the arced beam trajectory of each orbit of the cyclotron. All windings utilize MgB{sub 2} superconductor operating in the temperature window 15–20K. The main dipole windings are fabricated using the react-and-wind method; the beam transport channel windings are fabricated using the wind-and-react method. Previous reports have indicated that even wind and react MgB{sub 2} conductors can be irreversibly damaged by bending strain in the unreacted state. To determine the feasibility of MgB{sub 2} conductors for the beam transport channel windings, the dependence of critical current on bending radius of commercial wires was measured.
Authors:
; ; ; ; ; ; ;  [1]
  1. Department of Physics and Astronomy, Texas A and M University, College Station, TX 77845 (United States)
Publication Date:
OSTI Identifier:
22263975
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1573; Journal Issue: 1; Conference: International cryogenic materials conference, Anchorage, AK (United States), 17-21 Jun 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BEAM TRANSPORT; CRITICAL CURRENT; CYCLOTRONS; DESIGN; DIPOLES; MAGNESIUM BORIDES; SUPERCONDUCTORS