XFD – XF Engineering Group November 15-th, 2004LCLS Undulator Final Design Review1 Undulator for the LCLS project - design of the support and mover system

XFD – XF Engineering Group November 15-th, 2004LCLS Undulator Final Design Review2 Design and Procurement Consideration for the LCLS Undulator Support and Movers Current Design features Latest Design Changes Long Lead Items (none) Current Design features Latest Design Changes Long Lead Items (none) OUTLINE

XFD – XF Engineering Group November 15-th, 2004LCLS Undulator Final Design Review3 LCLS COMPONENT POSITIONING TOLERANCE Quadrupole motion positioning accuracy ±2 µm Short term (10 h) BPM and Quad stability ±1 µm Minimum Quad motion range radius 0.75 mm Maximum Quad motion range radius 1.2 mm BPM and Quad stability to position sensors 1 µm BPM and Quad stability to position sensors 1 µm Vacuum chamber transverse position tolerance ±100 µm Quad center position manual adjustment range ±2 mm Quad center position manual adjustment range ±2 mm Quad center position manual adjustment resolution 2 µm Longitudinal Cradle motion constraint ±3 mm Quad and BPM position stability during roll-away cond. 2 µm Quad and BPM position stability during roll-away cond. 2 µm Hor. And Vert. seg. pos. repeatability in roll-away cycle 10 µm Quad center long term (2 month) stability 1 µm BPM center long term (2 month) stability 1 µm Longitudinal component positioning tolerance ±1 mm Vacuum chamber to CA alignment tolerance ±100 µm Cradle replacement tolerance ±100 µm Cradle replacement tolerance ±100 µm

XFD – XF Engineering Group November 15-th, 2004LCLS Undulator Final Design Review4 LCLS Prototype Undulator Housing on the Support Stand

XFD – XF Engineering Group November 15-th, 2004LCLS Undulator Final Design Review5 Camshaft movers for LCLS undulator

XFD – XF Engineering Group November 15-th, 2004LCLS Undulator Final Design Review6 Results of the LCLS undulator motion test

XFD – XF Engineering Group November 15-th, 2004LCLS Undulator Final Design Review7 Camshaft mover for LCLS undulator (old design)

XFD – XF Engineering Group November 15-th, 2004LCLS Undulator Final Design Review8 Camshaft mover for LCLS undulator (new design)

XFD – XF Engineering Group November 15-th, 2004LCLS Undulator Final Design Review9 Measured slope of 6.6 Gauss/mm agree with calculations (~ 5.7 Gauss/mm for 3 mrad cant)Measured slope of 6.6 Gauss/mm agree with calculations (~ 5.7 Gauss/mm for 3 mrad cant) Alignment accuracy needed for  B/B ~ 1.5x10 -4 ~ 2 Gauss -> 0.3 mmAlignment accuracy needed for  B/B ~ 1.5x10 -4 ~ 2 Gauss -> 0.3 mm Effective magnetic field

XFD – XF Engineering Group November 15-th, 2004LCLS Undulator Final Design Review10 RMS phase error No significant dependency on XNo significant dependency on X An RMS phase error of ~ 6.5 degree is an upper limit for near- perfect (~100%) performanceAn RMS phase error of ~ 6.5 degree is an upper limit for near- perfect (~100%) performance

XFD – XF Engineering Group November 15-th, 2004LCLS Undulator Final Design Review11 Undulator unit with the support frame

XFD – XF Engineering Group November 15-th, 2004LCLS Undulator Final Design Review12 Undulator midplane sagging for the different support location

XFD – XF Engineering Group November 15-th, 2004LCLS Undulator Final Design Review13 Conclusion Design and preparation for the procurement of support components and movers is a 2005 FY task;Design and preparation for the procurement of support components and movers is a 2005 FY task; Final cradle design requires more information about all break components, quadrupole lens and vacuum chamber support design;Final cradle design requires more information about all break components, quadrupole lens and vacuum chamber support design; Full scale prototyping of the support and movers is a must;Full scale prototyping of the support and movers is a must; There are no long lead items in the support and mover system, so after the prototype test road is open for a full scale procurement.There are no long lead items in the support and mover system, so after the prototype test road is open for a full scale procurement.