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Title: Field Quality Optimization in a Common Coil Magnet Design

Abstract

This paper presents the results of initial field quality optimization of body and end harmonics in a 'common coil magnet design'. It is shown that a good field quality, as required in accelerator magnets, can be obtained by distributing conductor blocks in such a way that they simulate an elliptical coil geometry. This strategy assures that the amount of conductor used in this block design is similar to that is used in a conventional cosine theta design. An optimized yoke that keeps all harmonics small over the entire range of operation using a single power supply is also presented. The field harmonics are primarily optimized with the computer program ROXIE.

Authors:
;
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
Accelerator& Fusion Research Division
OSTI Identifier:
1011430
Report Number(s):
LBNL-42518
TRN: US201109%%363
DOE Contract Number:
DE-AC02-05CH11231
Resource Type:
Conference
Resource Relation:
Conference: Unknown
Country of Publication:
United States
Language:
English
Subject:
99; ACCELERATORS; AVAILABILITY; COMPUTER CODES; DESIGN; GEOMETRY; HARMONICS; MAGNETS; OPTIMIZATION

Citation Formats

Gupta, R., and Ramberger, S. Field Quality Optimization in a Common Coil Magnet Design. United States: N. p., 1999. Web.
Gupta, R., & Ramberger, S. Field Quality Optimization in a Common Coil Magnet Design. United States.
Gupta, R., and Ramberger, S. Wed . "Field Quality Optimization in a Common Coil Magnet Design". United States. doi:. https://www.osti.gov/servlets/purl/1011430.
@article{osti_1011430,
title = {Field Quality Optimization in a Common Coil Magnet Design},
author = {Gupta, R. and Ramberger, S.},
abstractNote = {This paper presents the results of initial field quality optimization of body and end harmonics in a 'common coil magnet design'. It is shown that a good field quality, as required in accelerator magnets, can be obtained by distributing conductor blocks in such a way that they simulate an elliptical coil geometry. This strategy assures that the amount of conductor used in this block design is similar to that is used in a conventional cosine theta design. An optimized yoke that keeps all harmonics small over the entire range of operation using a single power supply is also presented. The field harmonics are primarily optimized with the computer program ROXIE.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Sep 01 00:00:00 EDT 1999},
month = {Wed Sep 01 00:00:00 EDT 1999}
}

Conference:
Other availability
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  • This paper presents the results of initial field quality optimization of body and end harmonics in a 'common coil magnet design'. It is shown that a good field quality, as required in accelerator magnets, can be obtained by distributing conductor blocks in such a way that they simulate an elliptical coil geometry. This strategy assures that the amount of conductor used in this block design is similar to that is used in a conventional cosine theta design. An optimized yoke that keeps all harmonics small over the entire range of operation using a single power supply is also presented. Themore » field harmonics are primarily optimized with the computer program ROXIE.« less
  • A common coil design for high field 2-in-1 accelerator magnets has been previously presented as a 'conductor-friendly' option for high field magnets applicable for a Very Large Hadron Collider. This paper presents the mechanical design for a 14 tesla 2-in-1 dipole based on the common coil design approach. The magnet will use a high current density Nb{sub 3}Sn conductor. The design addresses mechanical issues particular to the common coil geometry: horizontal support against coil edges, vertical preload on coil faces, end loading and support, and coil stresses and strains. The magnet is the second in a series of racetrack coilmore » magnets that will provide experimental verification of the common coil design approach.« less
  • Common coil dipole magnets based on Nb{sub 3}Sn conductor and the React and Wind technology are a promising option for the next generation of hadron colliders. The react and wind technology has potential cost benefits in terms of cable insulation, structural materials and magnet fabrication. A common coil design allows the use of pre-reacted Nb{sub 3}Sn superconductor with low critical current degradation after bending. Fermilab in collaboration with LBNL is involved in the development of a single-layer common-coil dipole magnet with maximum field of 11 T and 40-50 mm aperture, for a future VLHC. The current magnetic and mechanical designsmore » of the dipole model, magnet parameters along with the status of the program, are reported in this paper.« less