Coil End Part Design Procedure

This paper provides a procedure for the design of coil end parts using the computer programs BEND and DELCOR created by Joe Cook and program PART created by Jeff Brandt at Fermi National Accelerator Laboratory. The superconducting cable paths are determined from both magnetic and mechanical considerations. The coil end parts used to shape and constrain the conductors in the coil ends are designed using the developable surface, grouped end approach. This procedure outlines the design steps, discusses the use of the computer programs for group and part creation, suggests standards for data management, and details the required CADD processes. Obtain a coil cross-section- this will define the group’s X-Y plane geometry requirements. All angles and point coordinates should be measured where the insulated conductor edges intersect the inner and outer coil radii. For each group, determine the conductor average keystone angle by subtracting the group side angles, and dividing by the number of conductors. Unless this average keystone angle is used, getting an exact match of CADD geometry will be impossible, and mid-thickness adjustment will be much more complicated. The average conductor mid-thickness for each group must be iterated by using program BEND to create a group with the nominal mid-thickness, comparing BEND geometry with CADD geometry, and adjusting the mid-thickness until