LARP LARP Document 1126-v1

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Report on HQ02 Magnet Coil Cross-Section Analysis

Document #:
Document type:
Submitted by:
Trey Holik
Updated by:
Trey Holik
Document Created:
10 Aug 2016, 23:02
Contents Revised:
10 Aug 2016, 23:02
DB Info Revised:
10 Aug 2016, 23:02
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  • Public document
The US LHC Accelerator Research Program (LARP) quadrupole HQ02 was designed and fully tested as part of the low-beta quad development for Hi-Lumi LHC. HQ02’s design is well documented with full fabrication accounting along with full field analysis at low and high current. With this history, HQ02 is an excellent test bed for developing a methodology for measuring turn locations from magnet cross sections and comparing with CAD models and measured field. All 4 coils of HQ02 were cut in identical locations along the magnetic length corresponding to magnetic field measurement and coil metrology. A real-time camera and coordinate measuring equipment was used to plot turn corners. Measurements include systematic and random displacements from nominal and waviness of winding blocks and individual turns along the magnetic length. The level of conductor displacement and waviness when compared to the measured RMS harmonics are in agreement, although correlating turn locations and measured harmonics in each cross sections is challenging.
Files in Document:
  • V0 (HQ02CrossSectionAnalysisReport_V0.docx, 8.5 MB)
  • V0 (HQ02CrossSectionAnalysisReport_V0.pdf, 1.7 MB)
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