Transcript Undulator Travel

Undulator Travel and Girder Assembly
David Schultz
Undulator commissioning
Translation limits
Interference
The plan
6/17/08
FAC Review
1
D. Schultz
[email protected]
Undulator Commissioning
We adopted the plan that initial Undulator beamline
commissioning to the electron dump would be done
without Undulator magnets on the girders.
1. Commission the line at 30 Hz with minimal risk to
the Undulator magnets.
1. Commissioning includes the BLM MPS system.
2. Commissioning includes BBA.
3. Install 2 Undulator magnets per shift when ready.
6/17/08
FAC Review
2
D. Schultz
[email protected]
Undulator Translation Stops
In-position limits: (current plan)
7.0 mm hard stop
6.5 mm emergency shut-off
6.0 mm reversing switch
5.75 mm PV limit (software)
(0.0 mm = nominal beam center)
±2.5mm good field region requires
>3.75mm clearance
6/17/08
FAC Review
3
D. Schultz
[email protected]
Undulator Vacuum Interference
Estimate ~2 mm clearance,
2.0-1.25 mm usable range.
6/17/08
FAC Review
4
D. Schultz
[email protected]
Girder Assembly
Girder assembly is under way.
We need to set the stops on the girders now.
Any Undulator is mountable on any girder.
Plan:
Set all girders’ stops to the values on slide 3
Re-shim all undulators for full travel
~24 Undulators RFI by 3/1/09
33 Undulators RFI by 6/1/09
6/17/08
FAC Review
5
D. Schultz
[email protected]