Engineering topics

Doose, Charles L.

Publications and source records attributed to Doose, Charles L..

3 records

DOE OSTI2019

Continuous winding magnets using thin film conductors without resistive joints

A continuous winding method produces a continuously wound electrical device, such an undulator. A continuous tape is wound about a series of turn around pins and in grooves in a magnetic core. A plurality of winding stacks are created, each transitioning to the next sequential stack by a transition tape portion extending from one turn around pin to the next turn around pin, which is position opposite with regard to the location of the pin on the magnetic core.

75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND↗

DOE OSTI2018

High performance superconducting undulator

A high performance superconducting undulator magnet is provided. The superconducting undulator magnet includes inset grooves in which magnetic poles are attached. The superconducting undulator magnet also includes clips for use in winding. The superconducting wire is wound such that the each revolution of the wire has a precise position within each of the grooves, the precise position being repeated in each groove. The superconducting undulator magnet provided will have a mechanical precision to preserve uniformity of the magnetic pole width and coil grooves. The undulator system provides uniformity of the undulator gap.

75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND↗

DOE OSTI2015

Measurement, Control and Minimization of Thermal Shift in Superconducting Devices

Superconducting (SC) magnetic and SC radiofrequency (SRF) devices designed for use in particle accelerators present challenging alignment problems. These devices are assembled and aligned at room temperature but operate at 2-4 K with thermal offsets being large relative to the desired alignment tolerances. Unique solutions have been developed for controlling and minimizing the thermal shift including utilization of materials that expand under cooling to compensate for contraction and kinematic couplings. Measurement of the thermal shift within SC devices is performed using both optical telescope and laser instruments, typically through a parallel plate vacuum glass window. This paper presents techniques developed at Argonne National Laboratory for measuring, controlling and minimizing thermal shift in SC devices at both the Advanced Photon Source (APS) and the Argonne Tandem Linear Accelerator System (ATLAS).

Jansma, William G.↗