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Two [Nb.sub.3]Sn subscale magnets (SQ02 and SD01) are tested in various axial loading conditions to examine the effect of axial support on quench performance. A three-dimensional (3D) element analysis has shown a high tensile strain at the end of the straight section, which is followed by about 2000 microstrain of compression in the tip of the end.

The progress in the design study of the HQ model quandrupole for LARP is described. Many magnetic and mechanical designs of the HQ models are described.

The status and the results of the [Nb.sub.3]Sn accelerator magnet research and development at Fermilab are described. The mechanical structure is shown to be reliable for coil fields up to 11 T and quench performance and field quality have good reproducibility.

The features related to the 2-dimensional and 3D geometries that have enhanced magnetic and mechanical characteristics of the dipole magnet for the SIS 300 are discussed. The field quality in the cross section is improved and the length of the end parts is shortened, which has given larger effective length of the dipole.

Novel configurations of superconducting magnets for helical muon beam cooling channels are designed at Fermilab. The possibility of combining two channels in one mechanical structure to allow beams of positive and negative muons to be cooled at the same time is discussed.

A modeling magnet consisting of multi-coil is used for calculating the properties under the condition that the maximum hoop stress of every coil has the same value. The calculations have shown certain relationships among the central magnetic field, the magnet volume and the stored energy.

The algorithms and basic equations that are used in the 'PMDS' code for efficient coil designing is described. The effect of the materials data on the performance of the magnet is examined.

The temperature and strain responses of fiber Bragg grating (FBG) sensors are measured at cryogenic temperatures. The results are used for monitoring the health of high field superconducting magnets and have proved that the FBG sensor is a precise strain sensor for cryogenic applications.

The superconducting and mechanical properties of Dy-123/Ag superconductors prepared with a seeding and temperature gradient method in air are studied. The flexural strength of the bulk has provided with measure of mechanical strength and the surface roughness of the bulks has affected the results of measurements of mechanical strength.

A new powder-in-tube (PIT) [Nb.sub.3]Sn conductor is described for the applications in a very high magnetic field. Micron diameter [Cu.sub.5][Sn.sub.4] intermetallic powder is introduced into the Nb-tubes and is processed by using a novel octagonal conductor design.

The prebending strain effect on cabling conductors fabricated with high strength [Nb.sub.3]Sn wires and conventional [Nb.sub.3]Sn wires is evaluated by using a react-and-wind method. High strength [Nb.sub.3]Sn wire and the prebending strain effect are useful for developing the superconducting cabling conductors with large current capacity and high strength.

The critical current ([I.sub.c]) of a Powder in Tube (PIT) [Nb.sub.3]Sn strand under transverse compressive and axial tensile loads is analyzed. The recovery of [I.sub.c] upon unloading of the transverse compressive force is examined.

A full resolution Finite Element Model (FEM) of the winding pack is built in order to compute the maximum stress level in the superconductor under Lorentz forces. These models are exploited during the development phase of the magnet in order to conduct mechanical design and estimation of field homogeneity losses.

An optimal design of a MOCVD-YBCO toroidal coil is carried out for 2 GJ class superconducting magnetic energy storage (SMES) by considering magnetically and mechanically influenced J -E characteristics. The studies have shown that a certain level of perpendicular magnetic field to the conductor is effective to homogenize the critical current distribution in the coil.

An optimal design process of a 600 kJ SMES magnet combined with mechanical stress analysis is described. The results have led to the development of an optimum design of a single-pole double pancake coil (DPC) type 600 kJ SMES magnet.

Finite element analysis is used for studying the mechanical behavior of the cold mass assembly of the R3B-GLAD magnet. The designed cold mass structure is capable to resist high level magnetic forces and the estimation on the mechanical and thermal properties of the coils is obtained by homogenization process.

A Finite Element Method (FEM) simulation model is used to study the nonlinear mechanical deformation of a modified D-shaped elemental coil in a 1 MW SMES. The finding indicates that FEM results are in good agreement with the mechanical deformations of the coil.

The HFML has developed a design for a 30 T resistive insert to combine with an 11 T superconducting outsert to a 40+ T hybrid magnet. Design tools from NHMFL in Tallahassee FL are used to optimize the magnetic field, staying well within limits of available conductor ultimate tensile strength.

A new lamination scheme is described for fast ramped bending magnets. The measurements have shown that the new scheme has suppressed eddy current effects in the pole entrance/exit region of bending magnets and the duration of the tumor treatment with Gantry 2 has speeded up due to the new lamination scheme.