D. Schultz

FAC Review DCS@SLAC.Stanford.edu

6/17/081

Undulator Travel and Girder Assembly

Undulator commissioning

Translation limitsInterferenceThe plan

David Schultz

D. Schultz

FAC Review DCS@SLAC.Stanford.edu

6/17/082

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.

D. Schultz

FAC Review DCS@SLAC.Stanford.edu

6/17/083

Undulator Translation Stops

In-position limits: (current plan)7.0 mm hard stop6.5 mm emergency shut-off6.0 mm reversing switch5.75 mm PV limit (software)(0.0 mm = nominal beam center)

±2.5mm good field region requires >3.75mm clearance

D. Schultz

FAC Review DCS@SLAC.Stanford.edu

6/17/084

Undulator Vacuum Interference

Estimate ~2 mm clearance,2.0-1.25 mm usable range.

D. Schultz

FAC Review DCS@SLAC.Stanford.edu

6/17/085

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 3Re-shim all undulators for full travel ~24 Undulators RFI by 3/1/0933 Undulators RFI by 6/1/09