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

About This Presentation
Title:

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

Description:

Hardness of the rings on the ball-bearings was increased from. 30-34 Rc to. 50-55 Rc ... A double bearing is installed instead of the single bearing ... – PowerPoint PPT presentation

Number of Views:80
Avg rating:3.0/5.0

less

Transcript and Presenter's Notes

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


1
What we are trying to achieve
  • Precision and repeatability of cam-shaft system
    in both directions (vertically and transverse),
    measured on undulator ends, for pitch and yaw
    motion as well. We are shooting for 5µ
  • (specification 7µ )
  • Precision and repeatability of transverse travel
    (80 mm) on linear stages. We are shooting for
    10µ
  • Precision of a K-value adjustment using
    transverse linear stages.
  • We are shooting for 10µ
  • Short term stability (10 hours) of the cradle and
    undulator.
  • We are shooting for 5µ (specification
    5µ )

2
What components we need to start a final test
  • LCLS undulator substitute (on order). Expected
    on 11/15.
  • New cam-shaft movers (on order) with new gear
    boxes (on order). Expected on 11/25.
  • Modified transverse stages with 4 travel (in
    house).
  • Motors (in house) and 90? gear boxes for these
    stages (on order). Expected on 10/31.
  • All transition plates, wedges and supporting
    parts (designs are complete, parts are on
    order). Expected on 11/25.

3
LCLS new single cam-shaft mover
  • New gear box with ratio 2501 is installed.
  • Calculation showed this ratio is enough to hold
    undulator with the girder in place.
  • Thats why a motor without brake is used.

4
LCLS new double cam-shaft mover
The same changes were implemented in this unit as
in the single cam-shaft.
5
LCLS new double cam-shaft mover (detail)
Hardness of the rings on the ball-bearings was
increased from 30-34 Rc to 50-55 Rc
6
LCLS new single cam-shaft mover working 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.
7
LCLS new single cam-shaft mover
8
LCLS new girder after welding
9
LCLS new girder after welding (detail 1)
10
LCLS new girder after welding (detail 2)
11
LCLS undulator on the girder
12
LCLS undulator on the girder (left end)
13
LCLS undulator transverse motion control
14
LCLS undulator on the girder (right end)
15
Provisions for the LCLS undulator replacement on
the translation stage
16
LCLS undulator fixed support with the cam-shaft
movers
Courtesy of Sushil Sharma and Bryan Rusthoven
17
LCLS undulator with the girder on the fixed
support and earthquake bracing concept
Courtesy of Sushil Sharma and Bryan Rusthoven
18
LCLS lifting table to place the girder with 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

19
CONCLUSION
  • Design of the LCLS prototype alignment and motion
    system close to the completion.
  • Multiple changes were implemented based on the
    breadboard test results and experience.
  • New hardware has been ordered and should be in
    house before 11/25/05.
  • Final tests of the alignment and motion system
    are scheduled for 01/2006 in the Single Undulator
    Test (SUT).
  • Design modifications will be implemented after
    the SUT if necessary and will be included in the
    FDR.
Write a Comment
User Comments (0)
About PowerShow.com