Field Quality from Tolerance Stack Up in R&D Quadrupoles for the Advanced Photon Source Upgrade

Jie Liu, Michael Borland, Roger Dejus, Aric Donnelly, Charles Doose, Joshua Downey, Animesh Jain, Mark Jaski, Schaa, Volker RW (Ed.), Power, Maria (Ed.), Shiltsev, Vladimir (Ed.), White, Marion (Ed.)
The Advanced Photon Source (APS) at Argonne National Laboratory (ANL) is considering upgrading the current double-bend, 7-GeV, 3rd generation storage ring to a 6-GeV, 4th generation storage ring with a Multibend Achromat (MBA) lattice. In this study, a novel method is proposed to determine fabrication and assembly tolerances through a combination of magnetic and mechanical tolerance analyses. Mechanical tolerance stackup analyses using Teamcenter Variation Analysis are carried out to determine
more » ... he part and assembly level fabrication tolerances. Finite element analyses using OPERA are conducted to estimate the effect of fabrication and assembly errors on the magnetic field of a quadrupole magnet and to determine the allowable tolerances to achieve the desired magnetic performance. Finally, results of measurements in R&D quadrupole prototypes are compared with the analysis results.
doi:10.18429/jacow-napac2016-wepob09 fatcat:d5b4g6ban5akphsdqwptzwc7ru