1. Alignment Diagnostic System Status
Content
Refresh ADS…
Schedule as planned…
Status of Ingredients & Integration …
Summary
Lehman Review, October 06 1

2. Refresh… Required stability of the Undulator
PRD – rev3, by Heinz Dieter Nuhn, SLAC
Transverse motion of components should be lower as:
X & Y Position of Quads (3s) micro meter
Undulator segment - Pitch micro radian
- Yaw micro radian
- Roll micro radian
Lehman Review, October 06 2

3. Refresh… Undulator motions expected
Shrinking of construction concrete
Trends: ~ One millimeter / year or
2 - 3 micrometer / day
Thermal driven transverse motions
Cycles: Heating or cooling of supports
Swing: < T < 0.5 degree K results into
micrometer depend on thermal capacity.
Microns
Trends
days
Microns
Cycles
hours
Required tolerances are much tighter, that leads to the
Alignment Diagnostic System [ADS]
Lehman Review, October 06 3

4. Refresh… ADS = Combination of Water & Wires
Hydro Level System [HLS] by Georg Gassner, SLAC
HLS sensor measures vertical distances to a common water level.
Wire Position Monitor [WPM] System
WPM measures horizontal & vertical distances to a stretched wire.
Combination of both leads to controlled Undulator X & Y position data
Lehman Review, October 06 4

5. Refresh ADS… Task, Geometry & Layout
Position tracking of 33 Undulator Segments on a sub-micrometer scale.
Water level and two stretched wires will be used as reference lines B A
Beam 33 1
BPM s
Undulator 132 m
ADS control section 140 m
Lehman Review, October 06 5

6. Refresh ADS... Quality and Quantities
Wire Position Monitor System
Resolution < 100 Nanometer
Instrument drift < 100 Nanometer/day
Number of sensors ~ 140 X- & Y-positions
Type of sensor Electro magnetic
Hydro Leveling System
Resolution ~ Micrometer
Number of sensors ~ 140 Y- positions
Type of sensor Capacitve and
Ultra sonic
Wire monitor
HLS monitor
Lehman Review, October 06 6

7. ADS Status & Integration
Preliminary Design Review on ADS in August 06
Report summary: Go ahead…
Order equipment & sensors soon as possible…
Study temperature effects of quadrupoles & supports…
Lehman Review, October 06 7

8. ADS schedule as planned…
Activities
until:
Engineering & specifications January 07
Component design & drawings March 07
Procurement & production September 07
Assembly, calibration & system test March 08
Installation & commissioning July 08
Lehman Review, October 06 8

9. Status of Ingredients & Integration at a glance
HLS
Capacitive
Ultra sonic
WPM
Integration
On order
Done
Design done
Under design
No action
Engineering
Sensors
Tubes
Supports
End-stations
Sub-stations
Electronic
Software
Test facility
Lehman Review, October 06 9

10. Status of WPM sensors: Design done
Monitor Length 74 Millimeter
Monitor GAP Millimeter Square
Lehman Review, October 06 10

11. Status of HLS capacitive sensors: On order
Capacity indicates distance of electrode to water surface.
Electrode area A
εair = 1
D air A
C = ε D
εwater = 80
D water
Commercial system, widely in use at SLAC Metrology.
Capacitive Sensor Head Electronic inside
Lehman Review, October 06 11

12. Status of HLS ultrasonic sensors: On order
Measurement of shock wave transition time (pulse sonar)
Single Echo
Shock Wave
Transceiver
Air
Water T1 T2 T3
Triple Echo
Shock Wave
Transceiver
Speed of Sound H2O = 1420 m/sec
Shock wave echo time = T2 -T1 will be used as absolute scaling factor
0.1 Micro second T 1 2 3
5 Micro sec
20 Micro sec
Lehman Review, October 06 12

13. Status of HLS & WPM supports: Design done
WPM to girder support
HLS to girder support
Lehman Review, October 06 13

14. Status of Wire End Station: Under design
Lehman Review, October 06 14

15. Integration of ADS to girder: Design done
Cross section
Upper Wire
WPM
Lower Wire
HLS
Front view
4 HLS & 4 WPM sensors
on each Undulator Segment.
Top view
Lehman Review, October 06 15

16. Integration of ADS to girder: Artist view
Drawing: Courtesy by Scott Doran, ANL
Ultra sonic
Capacitive
WPM
Lehman Review, October 06 16

17. Integration of Wire End Station: Under design
Lehman Review, October 06 17

18. Integration of WPM electronic: Engineering
Five substations will be located inside the Undulator section and one upstream
One substation controls transverse positions of three segments on each side
Two BPM s, ahead of the Undulator will be connected with the WPM system
Lehman Review, October 06 18

19. Integration of WPM substation: Engineering
HLS pipe
Control of 6 U- Segments
Lehman Review, October 06 19

20. Summary According to the planned schedule:
All major ADS construction activities seems to be on track.
All relevant components of ADS are tested, successfully.
All HLS readout electronic and all HLS sensors are on order.
According to integration into the Undulator:
ADS components are now integrated into the Undulator design.
Fiducialization will be a part of standard assembly procedures.
No delays for installation and commissioning expected, until now.
End of presentation
Lehman Review, October 06 20