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Title: The Superconducting Magnets of the ILC Beam Delivery System

Abstract

The ILC Beam Delivery System (BDS) uses a variety of superconducting magnets to maximize luminosity and minimize background. Compact final focus quadrupoles with multifunction correction coils focus incoming beams to few nanometer spot sizes while focusing outgoing disrupted beams into a separate extraction beam line. Anti-solenoids mitigate effects from overlapping focusing and the detector solenoid field. Far from the interaction point (IP) strong octupoles help minimize IP backgrounds. A low-field but very large aperture dipole is integrated with the detector solenoid to reduce backgrounds from beamstrahlung pairs generated at the IP. Physics requirements and magnetic design solutions for the BDS superconducting magnets are reviewed in this paper.

Authors:
; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Stanford Linear Accelerator Center (SLAC)
Sponsoring Org.:
USDOE
OSTI Identifier:
917264
Report Number(s):
SLAC-PUB-12832
TRN: US0804502
DOE Contract Number:
AC02-76SF00515
Resource Type:
Conference
Resource Relation:
Journal Name: Conf.Proc.C070625:3196,2007; Conference: Presented at Particle Accelerator Conference (PAC 07), Albuquerque, New Mexico, 25-29 Jun 2007
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; ACCELERATORS; APERTURES; DESIGN; DIPOLES; FOCUSING; LUMINOSITY; OCTUPOLES; PHYSICS; QUADRUPOLES; SOLENOIDS; SUPERCONDUCTING MAGNETS; Accelerators,ACCPHY

Citation Formats

Parker, B., Anerella, M., Escallier, J., He, P., Jain, A., Marone, A., /Brookhaven, Nosochkov, Y., Seryi, Andrei, and /SLAC. The Superconducting Magnets of the ILC Beam Delivery System. United States: N. p., 2007. Web.
Parker, B., Anerella, M., Escallier, J., He, P., Jain, A., Marone, A., /Brookhaven, Nosochkov, Y., Seryi, Andrei, & /SLAC. The Superconducting Magnets of the ILC Beam Delivery System. United States.
Parker, B., Anerella, M., Escallier, J., He, P., Jain, A., Marone, A., /Brookhaven, Nosochkov, Y., Seryi, Andrei, and /SLAC. 2007. "The Superconducting Magnets of the ILC Beam Delivery System". United States. doi:. https://www.osti.gov/servlets/purl/917264.
@article{osti_917264,
title = {The Superconducting Magnets of the ILC Beam Delivery System},
author = {Parker, B. and Anerella, M. and Escallier, J. and He, P. and Jain, A. and Marone, A. and /Brookhaven and Nosochkov, Y. and Seryi, Andrei and /SLAC},
abstractNote = {The ILC Beam Delivery System (BDS) uses a variety of superconducting magnets to maximize luminosity and minimize background. Compact final focus quadrupoles with multifunction correction coils focus incoming beams to few nanometer spot sizes while focusing outgoing disrupted beams into a separate extraction beam line. Anti-solenoids mitigate effects from overlapping focusing and the detector solenoid field. Far from the interaction point (IP) strong octupoles help minimize IP backgrounds. A low-field but very large aperture dipole is integrated with the detector solenoid to reduce backgrounds from beamstrahlung pairs generated at the IP. Physics requirements and magnetic design solutions for the BDS superconducting magnets are reviewed in this paper.},
doi = {},
journal = {Conf.Proc.C070625:3196,2007},
number = ,
volume = ,
place = {United States},
year = 2007,
month = 9
}

Conference:
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  • The ILC Reference Design Report was completed early in February 2007. The Magnet Systems Group was formed to translate magnetic field requirements into magnet designs and cost estimates for the Reference Design. As presently configured, the ILC will have more than 13,000 magnetic elements of which more than 2300 will be based on superconducting technology. This paper will describe the major superconducting magnet needs for the ILC as presently determined by the Area Systems Groups, responsible for beam line design, working with the Magnet Systems Group. The superconducting magnet components include Main Linac quadrupoles, Positron Source undulators, Damping Ring wigglers,more » a complex array of Final Focus superconducting elements in the Beam Delivery System, and large superconducting solenoids in the e{sup +} and e{sup -} Sources, and the Ring to Main Linac lines.« less
  • After twenty years of intensive R and D, superconducting magnets are now widely used in high-energy-physics laboratories. Large detectors and spectrometers have been the first area of successful application. New giant accelerators under construction or planned are definitely based on superconducting components while the use for beam lines appears more restricted to special purpose elements. A review of these various applications is presented. 41 refs.
  • The window-frame design for high-field superconducting beam-transport magnets was first applied to two, 2-m-long, 4-T modules of an 8/sup 0/ bending magent which has operated for nine years in the primary proton beam line at the Brookhaven National Laboratory Alternating Gradient Synchrotron (AGS). The design of two 1.5-m long, 7.6-cm cold-bore superconducting windowframe magnets, described in this paper, intended for the external proton beam transport system at the AGS incorporated evolutionary changes. These magnets generated a maximum aperture field of 6.8 T with a peak field in the dipole coil of 7.1 T. Measured fields are very accurate and aremore » compared to values calculated using the computer programs LINDA and POISSON. Results of quench-propagation studies demonstrate the excellent thermal stability of the magnets. The magnets quench safely without energy extraction at a maximum current density, J = 130 kA/cm/sup 2/ in the superconductor, corresponding to J = 57.6 kA/cm/sup 2/ overall the conductor at B = 6.7 T.« less