Design of end turns in current-dominated dipole and quadrupole magnets for fields with low higher-harmonic content.

PDF Version Also Available for Download.

Description

A design approach based on a stream function with a single angular Fourier component can be used to specify the end-turn configuration in magnet windings with discrete blocks of conductors. The design approach is especially appropriate for large-bore, current-dominated magnets with many turns. The design method can be summarized as follows: First find a winding-block layout (block angles, number of turns in each block, etc.) for the central, straight-conductor part of the windings that produces two-dimensional fields with negligible higher harmonic content. Next, specify the numbers of groups of conductors into which each block of the 2-D part of the ... continued below

Physical Description

3 p.

Creation Information

Walstrom, P. L. (Peter L.) January 1, 2002.

Context

This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 20 times . More information about this article can be viewed below.

Who

People and organizations associated with either the creation of this article or its content.

Publisher

Provided By

UNT Libraries Government Documents Department

Serving as both a federal and a state depository library, the UNT Libraries Government Documents Department maintains millions of items in a variety of formats. The department is a member of the FDLP Content Partnerships Program and an Affiliated Archive of the National Archives.

Contact Us

What

Descriptive information to help identify this article. Follow the links below to find similar items on the Digital Library.

Description

A design approach based on a stream function with a single angular Fourier component can be used to specify the end-turn configuration in magnet windings with discrete blocks of conductors. The design approach is especially appropriate for large-bore, current-dominated magnets with many turns. The design method can be summarized as follows: First find a winding-block layout (block angles, number of turns in each block, etc.) for the central, straight-conductor part of the windings that produces two-dimensional fields with negligible higher harmonic content. Next, specify the numbers of groups of conductors into which each block of the 2-D part of the winding fans out in the end-turn region. Also specify the end-zone axial length and the shape-function profile for the end zones. Finally, generate turn contours by finding conductor-group centerline curves in the developed (flattened) cylinder surface that are contours of constant stream function. Individual turns are specified by constant parallel displacement from the group centerline curve in the developed winding surface. An interactive computer program performs the above steps has been written and has been used to design end windings for a test quadrupole example. The unwanted higher harmonics in both peak and integral fields as computed by the Biot-Savart law are remarkably low.

Physical Description

3 p.

Source

  • Submtted to: Eighth European Particle Accelerator Conference (EPAC2002), June 3-7, 2002, Paris, France

Language

Item Type

Identifier

Unique identifying numbers for this article in the Digital Library or other systems.

  • Report No.: LA-UR-02-3159
  • Grant Number: none
  • Office of Scientific & Technical Information Report Number: 976187
  • Archival Resource Key: ark:/67531/metadc926911

Collections

This article is part of the following collection of related materials.

Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

What responsibilities do I have when using this article?

When

Dates and time periods associated with this article.

Creation Date

  • January 1, 2002

Added to The UNT Digital Library

  • Nov. 13, 2016, 7:26 p.m.

Description Last Updated

  • Dec. 9, 2016, 11:04 p.m.

Usage Statistics

When was this article last used?

Yesterday: 0
Past 30 days: 1
Total Uses: 20

Interact With This Article

Here are some suggestions for what to do next.

Start Reading

PDF Version Also Available for Download.

International Image Interoperability Framework

IIF Logo

We support the IIIF Presentation API

Walstrom, P. L. (Peter L.). Design of end turns in current-dominated dipole and quadrupole magnets for fields with low higher-harmonic content., article, January 1, 2002; United States. (digital.library.unt.edu/ark:/67531/metadc926911/: accessed October 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.