Construction details, assembly data, coil stress and end force measurements are reported with quench data for the initial full-length SSC model dipoles with 50 mm aperture being built at BNL.

This paper reports results of field quality measurements of the initial 15 m-long, 50 mm-aperture SSC Collider dipoles tested at Brookhaven National Laboratory and Fermi National Laboratory. These data include multipole coefficients and the dipole angle at room temperature and 4.35 K, 4.35 K integral field measurements, and time-dependent effects. Systematic uncertainties are also discussed.

The effects of iron saturation on field harmonics are examined. The field harmonics change due to the persistent current in the superconducting wires and the deformation of the coil shape because of Lorentz forces. A discussion is presented of the variation in the sextupole harmonics with current and an explanation is given of the differences between the calculations and measurements. Also discussed are the skew quadrupole harmonic at high field in the long dipole magnets.<>

The Relativistic Heavy Ion Collider (RHIC) has six interaction regions for the colliding beam. Each interaction region is part of an insertion region consisting of several magnets. The required aperture of some of the quadrupoles and dipoles in the insertion regions is much larger than the nominal 80-mm aperture of the other magnets in the accelerator. There will be 82 quadrupole magnets having an aperture of 130 mm and a maximum operating field gradient of 59 T/m, and 12 dipole magnets having an aperture of 200 mm and an operating central field of 4.3 T. The authors discuss the magnetic design of the coil and iron cross section for these magnets.<>

The development of the basic requirements for the turn-to-turn, coil-to-coil, and coil-to-ground insulation for SSC dipoles is discussed. The insulation method is also described along with test procedures for verification of insulation integrity. Electrical tests are performed throughout the magnet assembly and fabrication process to verify that coil integrity and insulation quality of the various components and sub-assemblies are within nominal limits. These tests are also required to certify each dipole for SSC acceptance before it is installed in the cryostat and leaves the factory for final installation. The following series of tests, which are conducted at room temperature, are listed below.

The proposed Relativistic Heavy Ion Collider (THIC) requires 408 regular arc quadrupoles. Two full-size prototypes have been constructed and tested. The construction uses the single-layer, collarless concept which has been successful in the RHIC dipoles. Both the magnets attained short sample current, which is 60% higher than the operating current. This corresponds to a gradient of 113 T/m with a clear bore of 80 mm. The preliminary field measurements are in agreement with the calculations with the exception of an unexpectedly large skew sample.<>

The authors report results from two 1.8 m long dipoles built as part of the Superconducting Super Collider (SSC) R&D program. These images contain design changes made on both the 1.8 m and the full-length 17 m dipoles to improve quench performance, magnetic field uniformity, and manufacturability. The magnets reach 8 T with little training. The magnet design and construction-including cable, coil, coil assembly and collaring, and yoke and shell-are described. Test results given include quench data, stress measurements, and field strength and multipoles

Four full-scale SSC (Superconducting Super Collider) development dipole magnets have been tested for mechanical and quench behavior. Two are of a design similar to that of previous magnets but contain a number of improvements, including more uniform coil size, higher prestress, and a redesigned inner-outer coil splice. One exceeds the SSC operating current on the second quench, but the other appears to be limited by damaged superconductor to a lower current. The other two magnets are of alternate designs. One trains erratically and fails to reach a plateau, and the other reaches a plateau after four quenches.<>