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Magnet System Supporting Documentation

General Information

This area provides a range of documentation associated with the ILC Damping Ring Magnets including wigglers. Please note that kickers and septa for the damping rings have been designated as part of the injection/extraction sub-systems (Component Spec Sheets, Supporting Docs) as opposed to the magnet sub-system. Also note that, while the initial version of the damping ring lattice is available, work on the injection and extraction lines is ongoing. Thus the list of magnets required is, at present, incomplete.

DR Magnet Summary

The following table provides the magnet counts presently specified for each of the ILC damping rings (1 electron and 2 positron rings):

OCS V6 Ring Magnet Counts
Magnet Type Count Comment
Bends 126 114 6m units and 12 3m units
Quadrupoles 747  
Sextupoles 504  
Horizontal Correctors 150 Based on cell counts
Vertical Correctors 150 Based on cell counts
Skew Quad Correctors 240 Based on sextupole pair counts
Wigglers 80  
Kickers 64  
Septa 4  

  • Summary spreadsheet of OCS6 magnet information for magnets group
  • ILCDR-MagnetPowerCalculation.xls: OCS6 layout magnet power summary spreadsheet (A. Wolski w/updates from M. Palmer, 11/22/2006). Latest changes include addition of the Efremov corrector designs and a bug fix in the quadrupole power calculation introduced in the preceding version. NOTE: This version still assumes individual power supplies located in 4 alcoves and is being used as the basis to scale the equivalent power loads for a bus-based power system with distributed dc-to-dc converters. We intend to have a fully updated design available by mid-January, 2007 (M. Palmer/P. Bellomo).


OCS V2 Ring Magnet Counts
Magnet Type Count Comment
Bends 130 110 6m units and 20 3m units
Quadrupoles 783  
Sextupoles 520  
Horizontal Correctors 127 Based on Table 3.16 of detailed DR Configuration Recommendation
Vertical Correctors 127 Based on Table 3.16 of detailed DR Configuration Recommendation
Skew Quad Correctors 96 Based on Table 3.16 of detailed DR Configuration Recommendation
Wigglers 80  
Kickers 64  
Septa 4  

Recent Presentations

  • Mark Palmer's slides from the ILC Magnets Meeting at SLAC on 4/25/06 (ppt, pdf)
  • Jeremy Urban's slides from ILCDR Teleconference Meeting on 5/9/06 (pdf)

CESR-c Wigglers

Power and Control Electronics

  • RPPE077.pdf: A Complete System for Operation of a Superconducting Magnet (PAC05)
    • Gives a description and block diagram of the power and control electronics for the CESR-c SC wigglers and SC solenoids.
  • CESR_SC_Magnet.pdf: CESR-c Superconducting Magnet Electronics
    • Part numbers and approximate costs for major electronics components
  • RPPE077-45-left.ppt: A Complete System for Operation of a Superconducting Magnet (PAC05 poster, lefthand page)
    • Block Diagram nd overall description of the power and control electronics for the CESR-c SC wigglers and SC solenoids (Powerpoint).
  • RPPE077-45-right.ppt: A Complete System for Operation of a Superconducting Magnet (PAC05 poster, righthand page)
    • Photos of the power and control electronics for the CESR-c SC wigglers and SC solenoids (Powerpoint).

Mechanical Drawings

The following sections provide drawing files for the CESR-c superferric wigglers in various formats.

PDF format

  • 6070-078: CESR-c 8-40 Wiggler Top Level Assembly
  • (The order the sub-assy files are listed below follows the order they appear on the parts list in the top level drawing.)
  • 6070-009: CESR-c Wiggler: Cryostat Vacuum Vessel Sub-Assy
  • 6070-007: CESR-c Wiggler: Outer Radiation Shield Sub-Assy
  • 6070-006: CESR-c Wiggler: Suspension Straps Sub-Assy
  • 6070-071: CESR-c Wiggler: Cold Mass Vessel Sub-Assy
  • 6070-011: CESR-c Wiggler: Beam Pipe Shield Sub-Assy
  • 6070-005: CESR-c Wiggler: Beam Pipe Sub-Assy
  • 6070-008: CESR-c Wiggler: LHe Stack Sub-Assy
  • 6070-029: CESR-c Wiggler: Frame Stand Sub-Assy

DWF format

These files can be viewed with the Autodesk DWF Viewer. This viewer can be downloaded for free from the Autodesk site.

DWG format

These files will eventually appear so that damping ring collaborators can work with the actual engineering documents. However, it will take some time to configure them properly for general use. Please check back often.

RDR Costing Information

RDR and TDR Development Effort

Go to page for RDR and TDR Collaborators.

Conventional Magnets

  • Magnet multipole errors used to simulate damping ring performance were based on the PEP-II magnets. This information is detailed in a talk by Yunhai Cai

  • B/Q/S Random & Systematic Multipole Errors in OCS v2 Ring (simulation by Jeremy Urban):
    ocs2 me c.png

  • One key issue is the interface between the conventional magnets and the vacuum chamber. At present, the ILCDR vacuum requirements are being scaled from information at existing facilities, eg, Soleil.
I Attachment Action Size Date Who Comment
6070-005-all-sheets.pdfpdf 6070-005-all-sheets.pdf manage 2 MB 24 Apr 2006 - 13:30 TimothyOConnell CESR-c Wiggler: Beam Pipe Sub-Assy
6070-006-all-sheets.pdfpdf 6070-006-all-sheets.pdf manage 990 K 24 Apr 2006 - 13:25 TimothyOConnell CESR-c Wiggler: Suspension Straps Sub-Assy
6070-007-all-sheets.pdfpdf 6070-007-all-sheets.pdf manage 1 MB 24 Apr 2006 - 13:24 TimothyOConnell CESR-c Wiggler: Outer Radiation Shield Sub-Assy
6070-008-all-sheets.pdfpdf 6070-008-all-sheets.pdf manage 2 MB 24 Apr 2006 - 13:33 TimothyOConnell CESR-c Wiggler: LHe Stack Sub-Assy
6070-009-all-sheets.pdfpdf 6070-009-all-sheets.pdf manage 1 MB 24 Apr 2006 - 13:19 TimothyOConnell CESR-c Wiggler: Cryostat Vacuum Vessel Sub-Assy
6070-011-all-sheets.pdfpdf 6070-011-all-sheets.pdf manage 579 K 24 Apr 2006 - 13:29 TimothyOConnell CESR-c Wiggler: Beam Pipe Shield Sub-Assy
6070-029-all-sheets.pdfpdf 6070-029-all-sheets.pdf manage 532 K 24 Apr 2006 - 13:33 TimothyOConnell CESR-c Wiggler: Frame Stand Sub-Assy
6070-071-all-sheets.pdfpdf 6070-071-all-sheets.pdf manage 2 MB 24 Apr 2006 - 13:27 TimothyOConnell CESR-c Wiggler: Cold Mass Vessel Sub-Assy
6070-078-all-sheets.pdfpdf 6070-078-all-sheets.pdf manage 1 MB 24 Apr 2006 - 13:11 TimothyOConnell CESR-c 8-40 Wiggler Top Level Assembly
CESR_SC_Magnet.pdfpdf CESR_SC_Magnet.pdf manage 53 K 19 Jun 2006 - 13:01 GeraldCodner Part Numbers and approximate cost of CESR-c SC magnet electronics components
Cai_MutipoleErrors.pdfpdf Cai_MutipoleErrors.pdf manage 75 K 15 Jun 2006 - 21:53 MarkPalmer Summary of Multipole Error Specifications Used in ILCDR Simulations
ILCDR-MagnetPowerCalculation.xlsxls ILCDR-MagnetPowerCalculation.xls manage 1 MB 23 Nov 2006 - 06:52 MarkPalmer OCS6 layout magnet power summary spreadsheet (A. Wolski w/ updates from M. Palmer) - Latest changes include adding correctors and a bug fix for the quads
ILC_Magnets_2006_0425_nocost.pdfpdf ILC_Magnets_2006_0425_nocost.pdf manage 534 K 20 Jul 2006 - 18:37 MarkPalmer Magnets report - costs removed
ILC_Magnets_2006_0425_nocost.pptppt ILC_Magnets_2006_0425_nocost.ppt manage 732 K 20 Jul 2006 - 18:35 MarkPalmer Magnets report - costs removed
OCS2_Magnet_Summary.xlsxls OCS2_Magnet_Summary.xls manage 67 K 11 Jul 2006 - 21:38 MarkPalmer Summary spreadsheet (w/4 quad families) of OCS2 magnet info for magnets group
OCS6_Magnet_Summary.xlsxls OCS6_Magnet_Summary.xls manage 56 K 06 Nov 2006 - 09:56 MarkPalmer OCS Magnet Summary Spreadsheet (update corrector counts and field qualities)
RPPE077-45-left.pptppt RPPE077-45-left.ppt manage 491 K 20 Jun 2006 - 13:27 GeraldCodner PAC05 SC Magnet Operating System Poster - Block Diagram
RPPE077-45-right.pptppt RPPE077-45-right.ppt manage 9 MB 20 Jun 2006 - 13:28 GeraldCodner PAC05 SC Magnet Operating System Poster - photographs
RPPE077.pdfpdf RPPE077.pdf manage 150 K 19 Jun 2006 - 12:41 GeraldCodner PAC05 Paper - Superconducting Magnet Power and Control System for CESR-c Wigglers
Urban_09may06_teleconference.pdfpdf Urban_09may06_teleconference.pdf manage 955 K 09 May 2006 - 15:00 UnknownUser Slides from ILCDR Teleconference (May 9, 2006)
d-6070-067-01.pdfpdf d-6070-067-01.pdf manage 71 K 06 Apr 2006 - 22:36 MarkPalmer PEP-II Quadrupole Vacuum Chamber Extrusion
d-6070-074-01.pdfpdf d-6070-074-01.pdf manage 75 K 06 Apr 2006 - 22:37 MarkPalmer Transition from PEP-II Quadrupole to Standard CESR Vacuum Chamber
d-6070-078.pdfpdf d-6070-078.pdf manage 1 MB 06 Apr 2006 - 22:38 MarkPalmer CESR-c Wiggler Assembly Schematics
d-6070-080-01b.pdfpdf d-6070-080-01b.pdf manage 320 K 06 Apr 2006 - 22:40 MarkPalmer CESR-c Wiggler on Stand
ocs2_me3.pngpng ocs2_me3.png manage 17 K 10 May 2006 - 11:16 UnknownUser B/Q/S Multipole Errors in OCS v2 Ring
ocs2_me_c.epseps ocs2_me_c.eps manage 17 K 20 Jun 2006 - 11:12 UnknownUser B/Q/S Multipole Errors in OCS v2 Ring
ocs2_me_c.pngpng ocs2_me_c.png manage 19 K 20 Jun 2006 - 11:13 UnknownUser B/Q/S Multipole Errors in OCS v2 Ring