October 20, 2005 LCLS Undulator Alignment and Motion System 1

XFD – XF Engineering GroupXFD – XF Engineering Group

• Precision and repeatability of cam-shaft system in both Precision and repeatability of cam-shaft system in both directions (vertically and transverse), measured on undulator directions (vertically and transverse), measured on undulator ends, for pitch and yaw motion as well. ends, for pitch and yaw motion as well. We are shooting for ± We are shooting for ± 5µ5µ

• (specification ± 7µ )(specification ± 7µ )

• Precision and repeatability of transverse travel (80 mm) on Precision and repeatability of transverse travel (80 mm) on linear stages. linear stages. We are shooting for ± 10µWe are shooting for ± 10µ

• Precision of a K-value adjustment using transverse linear Precision of a K-value adjustment using transverse linear stages. stages.

We are shooting for ± 10µWe are shooting for ± 10µ • Short term stability (10 hours) of the cradle and undulator. Short term stability (10 hours) of the cradle and undulator.

We are shooting for ± 5µWe are shooting for ± 5µ (specification ± 5µ )(specification ± 5µ )

What we are trying to achieve: What we are trying to achieve:

October 20, 2005 LCLS Undulator Alignment and Motion System 2

XFD – XF Engineering GroupXFD – XF Engineering Group

• LCLS undulator substitute LCLS undulator substitute (on order). (on order). Expected on 11/15.Expected on 11/15.

• New cam-shaft movers New cam-shaft movers (on order)(on order) with new gear boxes with new gear boxes (on order). (on order). Expected on 11/25.Expected on 11/25.

• Modified transverse stages with 4” travel Modified transverse stages with 4” travel (in house).(in house).

• Motors Motors (in house)(in house) and 90 and 90 gear boxes for these stages gear boxes for these stages (on order). (on order). Expected on 10/31.Expected on 10/31.

• All transition plates, wedges and supporting parts All transition plates, wedges and supporting parts (designs are complete, parts are on order).(designs are complete, parts are on order). Expected on Expected on 11/25.11/25.

What components we need to start a final test: What components we need to start a final test:

October 20, 2005 LCLS Undulator Alignment and Motion System 3

XFD – XF Engineering GroupXFD – XF Engineering Group

LCLS new single cam-shaft moverLCLS new single cam-shaft mover

•New gear box with ratio 250:1 is installed.

•Calculation showed this ratio is enough to hold undulator with the girder in place.

•That’s why a motor without brake is used.

October 20, 2005 LCLS Undulator Alignment and Motion System 4

XFD – XF Engineering GroupXFD – XF Engineering Group

LCLS new double cam-shaft moverLCLS new double cam-shaft mover

The same changes were implemented in this unit as in the single cam-shaft.

October 20, 2005 LCLS Undulator Alignment and Motion System 5

XFD – XF Engineering GroupXFD – XF Engineering Group

LCLS new double cam-shaft mover LCLS new double cam-shaft mover (detail)(detail)

Hardness of the rings on the ball-bearings was increased from

30-34 Rc to

50-55 Rc

October 20, 2005 LCLS Undulator Alignment and Motion System 6

XFD – XF Engineering GroupXFD – XF Engineering Group

LCLS new single cam-shaft mover LCLS new single cam-shaft mover working with “V” padworking with “V” pad

The flat pad is replaced by one with a “V” shape - 16 angle.

A double bearing is installed instead of the single bearing

Its purpose is to replace sliding friction by rolling friction.

October 20, 2005 LCLS Undulator Alignment and Motion System 7

XFD – XF Engineering GroupXFD – XF Engineering Group

LCLS new single cam-shaft moverLCLS new single cam-shaft mover

October 20, 2005 LCLS Undulator Alignment and Motion System 8

XFD – XF Engineering GroupXFD – XF Engineering Group

LCLS new girder after weldingLCLS new girder after welding

October 20, 2005 LCLS Undulator Alignment and Motion System 9

XFD – XF Engineering GroupXFD – XF Engineering Group

LCLS new girder after welding (detail LCLS new girder after welding (detail 1)1)

October 20, 2005 LCLS Undulator Alignment and Motion System 10

XFD – XF Engineering GroupXFD – XF Engineering Group

LCLS new girder after welding (detail LCLS new girder after welding (detail 2)2)

October 20, 2005 LCLS Undulator Alignment and Motion System 11

XFD – XF Engineering GroupXFD – XF Engineering Group

LCLS undulator on the girder LCLS undulator on the girder

October 20, 2005 LCLS Undulator Alignment and Motion System 12

XFD – XF Engineering GroupXFD – XF Engineering Group

LCLS undulator on the girder (left LCLS undulator on the girder (left end)end)

October 20, 2005 LCLS Undulator Alignment and Motion System 13

XFD – XF Engineering GroupXFD – XF Engineering Group

LCLS undulator transverse motion LCLS undulator transverse motion controlcontrol

October 20, 2005 LCLS Undulator Alignment and Motion System 14

XFD – XF Engineering GroupXFD – XF Engineering Group

LCLS undulator on the girder (right LCLS undulator on the girder (right end)end)

October 20, 2005 LCLS Undulator Alignment and Motion System 15

XFD – XF Engineering GroupXFD – XF Engineering Group

Provisions for the LCLS undulator Provisions for the LCLS undulator replacement on the translation stagereplacement on the translation stage

October 20, 2005 LCLS Undulator Alignment and Motion System 16

XFD – XF Engineering GroupXFD – XF Engineering Group

LCLS undulator fixed support with the LCLS undulator fixed support with the cam-shaft moverscam-shaft movers

Courtesy of Sushil Sharma and Bryan Rusthoven

October 20, 2005 LCLS Undulator Alignment and Motion System 17

XFD – XF Engineering GroupXFD – XF Engineering Group

LCLS undulator with the girder on LCLS undulator with the girder on the fixed support and earthquake the fixed support and earthquake

bracing conceptbracing concept

Courtesy of Sushil Sharma and Bryan Rusthoven

October 20, 2005 LCLS Undulator Alignment and Motion System 18

XFD – XF Engineering GroupXFD – XF Engineering Group

LCLS lifting table to place the girder LCLS lifting table to place the girder with an undulator to the fixed supportwith an undulator to the fixed support

Table data:

1. Lifting capacity 6000 lbs

2. Table size 48” X 32”

3. Min. height 37”

4. Max. height 59”

October 20, 2005 LCLS Undulator Alignment and Motion System 19

XFD – XF Engineering GroupXFD – XF Engineering Group

• Design of the LCLS prototype alignment and motion Design of the LCLS prototype alignment and motion system close to the completion.system close to the completion.

• Multiple changes were implemented based on the Multiple changes were implemented based on the breadboard test results and experience.breadboard test results and experience.

• New hardware has been ordered and should be in house New hardware has been ordered and should be in house

before 11/25/05.before 11/25/05.

• Final tests of the alignment and motion system are Final tests of the alignment and motion system are scheduled for 01/2006 in the Single Undulator Test scheduled for 01/2006 in the Single Undulator Test (SUT).(SUT).

• Design modifications will be implemented after the SUT Design modifications will be implemented after the SUT if necessary and will be included in the FDR.if necessary and will be included in the FDR.

CONCLUSIONCONCLUSION