November 15-th, 2004 LCLS Undulator Final Design Review 1

XFD – XF Engineering GroupXFD – XF Engineering Group

Undulator for the LCLS project -Undulator for the LCLS project - design of the support and mover design of the support and mover

systemsystem

November 15-th, 2004 LCLS Undulator Final Design Review 2

XFD – XF Engineering GroupXFD – XF Engineering Group

Design and Procurement Consideration for the LCLS Undulator Support and Movers

Current Design featuresCurrent Design features

Latest Design Changes Latest Design Changes

Long Lead Items Long Lead Items (none)(none)

Current Design featuresCurrent Design features

Latest Design Changes Latest Design Changes

Long Lead Items Long Lead Items (none)(none)

OUTLINE

November 15-th, 2004 LCLS Undulator Final Design Review 3

XFD – XF Engineering GroupXFD – XF Engineering Group

LCLS COMPONENT POSITIONING TOLERANCELCLS COMPONENT POSITIONING TOLERANCE

Quadrupole motion positioning accuracy ±2 µm Quadrupole motion positioning accuracy ±2 µm Short term (10 h) BPM and Quad stability ±1 µm Short term (10 h) BPM and Quad stability ±1 µm Minimum Quad motion range radius 0.75 mm Minimum Quad motion range radius 0.75 mm Maximum Quad motion range radius 1.2 mm Maximum Quad motion range radius 1.2 mm BPM and Quad stability to position sensors 1 µmBPM and Quad stability to position sensors 1 µmVacuum chamber transverse position tolerance ±100 µmVacuum 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 Quad center position manual adjustment resolution 2 µm Longitudinal Cradle motion constraint ±3 mmLongitudinal 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 Hor. And Vert. seg. pos. repeatability in roll-away cycle 10 µm Quad center long term (2 month) stability 1 µm Quad center long term (2 month) stability 1 µm BPM center long term (2 month) stability 1 µm BPM center long term (2 month) stability 1 µm Longitudinal component positioning tolerance ±1 mm Longitudinal component positioning tolerance ±1 mm Vacuum chamber to CA alignment tolerance ±100 µm Vacuum chamber to CA alignment tolerance ±100 µm Cradle replacement tolerance ±100 µm Cradle replacement tolerance ±100 µm

November 15-th, 2004 LCLS Undulator Final Design Review 4

XFD – XF Engineering GroupXFD – XF Engineering Group

LCLS Prototype Undulator Housing on the Support Stand

November 15-th, 2004 LCLS Undulator Final Design Review 5

XFD – XF Engineering GroupXFD – XF Engineering Group

Camshaft movers for LCLS undulatorCamshaft movers for LCLS undulator

November 15-th, 2004 LCLS Undulator Final Design Review 6

XFD – XF Engineering GroupXFD – XF Engineering Group

Results of the LCLS undulatorResults of the LCLS undulatormotion testmotion test

-0.01

-0.005

0

0.005

0.01

0.015

0.02

0.025

0.03

-1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1

vertical position, mm

alig

nm

ent er

ror,

mm

horizontal

vertical

November 15-th, 2004 LCLS Undulator Final Design Review 7

XFD – XF Engineering GroupXFD – XF Engineering Group

Camshaft mover for LCLS undulatorCamshaft mover for LCLS undulator(old design)(old design)

November 15-th, 2004 LCLS Undulator Final Design Review 8

XFD – XF Engineering GroupXFD – XF Engineering Group

Camshaft mover for LCLS undulatorCamshaft mover for LCLS undulator(new design)(new design)

November 15-th, 2004 LCLS Undulator Final Design Review 9

XFD – XF Engineering GroupXFD – XF Engineering Group

• Measured slope of 6.6 Gauss/mm agree with calculations (~ 5.7 Measured slope of 6.6 Gauss/mm agree with calculations (~ 5.7 Gauss/mm for 3 mrad cant)Gauss/mm for 3 mrad cant)

• Alignment accuracy needed for Alignment accuracy needed for B/B ~ 1.5x10B/B ~ 1.5x10-4-4 ~ 2 Gauss -> 0.3 mm ~ 2 Gauss -> 0.3 mm

Effective magnetic field

November 15-th, 2004 LCLS Undulator Final Design Review 10

XFD – XF Engineering GroupXFD – XF Engineering Group

RMS phase errorRMS phase error

• No significant dependency on XNo significant dependency on X• An RMS phase error of ~ 6.5 degree is an upper limit for An RMS phase error of ~ 6.5 degree is an upper limit for

near-perfect (~100%) performancenear-perfect (~100%) performance

November 15-th, 2004 LCLS Undulator Final Design Review 11

XFD – XF Engineering GroupXFD – XF Engineering Group

Undulator unit with the support frameUndulator unit with the support frame

November 15-th, 2004 LCLS Undulator Final Design Review 12

XFD – XF Engineering GroupXFD – XF Engineering Group

Undulator midplane sagging for the Undulator midplane sagging for the

different support locationdifferent support location

November 15-th, 2004 LCLS Undulator Final Design Review 13

XFD – XF Engineering GroupXFD – XF Engineering Group

ConclusionConclusion

• Design and preparation for the procurement of Design and preparation for the procurement of support components and movers support components and movers is a 2005 FY task;is a 2005 FY task;

• Final cradle design requires more information Final cradle design requires more information about all break components, quadrupole lens and about all break components, quadrupole lens and vacuum chamber support design;vacuum chamber support design;

• Full scale prototyping of the support and movers is Full scale prototyping of the support and movers is a must;a must;

• There are no long lead items in the support and There are no long lead items in the support and mover system, so after the prototype test road is mover system, so after the prototype test road is open for a full scale procurement. open for a full scale procurement.