VERTICAL DEWARFuture high energy accelerators such as the Large Hadron Collider require accelerator magnets with the highest possible fields. For NbTi conductor magnets, this means operating at superfluid helium temperatures in the range of 1.8-1.9K. As part of Fermilab's superconducting magnet R&D program, we have built a facility to test magnets in a vertical dewar of superfluid liquid helium. The dewar is designed for magnets up to 4 m length and 620 mm diameter, with a temperature range of 1.8 K to 4.4 K and 1 atmosphere helium. The power system consists of 10 kA and 8.8 kA power supplies operating in parallel, with bus work and an extraction circuit that can accommodate up a 18kA excitation current.A description of the facility as well as operational experience from the first magnet tests are presented.

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The Main Injector project at Fermilab requires B dipole with good field quality from 0.1 T to 1.73 T with ramps to full field at up to 2.4 T/s over an aperture of 10x6 cm. Op e&ion of this magnet for the variety of purposa proposed for the Main lqjector results in a design with low indnctame, large copper cnm metion, and fidd uniformity sufficient for high intensity iqjection and efficient slow resonant extraction. The resulting design is presented, along with meaauremcnt results of a prototype magnet emphasiring the field uniformity.

Fermilab's accelerator magnet R&D programs, including production of superconducting high gradient quadrupoles for the LHC insertion regions, require rigorous yet flexible magnetic measurement systems. Measurement systems must be capable of handling various types of hardware and extensible to all measurement technologies and analysis algorithms. A tailorable software system that satisfies these requirements is discussed. This single system, capable of distributed parallel signal processing, is built on top of a flexible component-based framework that allows for easy reconfiguration and run-time modification. Both core and domain-specific components can be assembled into various magnet test or analysis systems. The system configured to comprise a rotating coil harmonics measurement is presented. Technologies as Java, OODB, XML, JavaBeans, software bus and component-based architectures are used.

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