Calculation of Magnetic Field in the Regionof the Superconducting Winding of Window Frame Dipolefor Particle Accelerators

摘要

The necessity of simulations in design of superconducting dipole magnets is due to the followingcircumstances. First, the critical current as a function of the magnetic field I_c(B)for the multicore superconduct-ing cable which drops strongly requires the knowledge of the value of maximum magnetic field "felt" by itscoils for estimation of the working current of the magnet. Second, for choosing the optimal number of coils ofthe winding (1 or 2) and the working current of the magnet, the ratio of B. for the inner and outer layers ofthe dipole magnet winding should be known. Since usually the length of the dipole magnet exceeds many timesits transverse size, in this work all calculations of B(x, y) are performed in the transverse plane crossing the cen-ter of the magnet. The field at the central point is chosen to be B(0, 0) 2 T (this is the characteristic workingvalue close to the maximum value in the dipole magnet of this type). In this work, the results of calculation ofB(x, y) for single- and double-layered windings with 8 and 16 coils from circular hollow cable are presented.