Undulator Assembly Procedure

1
Undulator Assembly Procedure

• LCLS Review
• 11/15/04
• Mark Erdmann

2
Assembly Plan

• LCLS will provide strongbacks, poles, and sorted
  magnets to assembly vendor
• Assembly vendor will fabricate remaining parts
• Assembly will be according to LCLS procedure

3
Assembly Procedure

• Closely follows experience of prototype assembly
• Improved and simplified by value added
  engineering changes
• Poles with a more basic design but tighter
  tolerances
• Pole sorting not required
• One piece base plate versus 3 pieces
• Assembly can easily be performed by mechanical
  shop without previous undulator or permanent
  magnet experience

4
Step 1 Check 10 of incoming poles to verify
they meet the height specification.
5
Step 2 Attach 1st pole assembly fixture to the
magnet / pole base plate.
6
Step 3 Install poles onto the base plate,
starting on the upstream side.
7
Step 4 Attach 2nd pole assembly fixture and
continue installing poles until entire magnetic
structure is full.
8
Step 5 Obtain magnetic field data from
manufacturer and sort magnets. Manually install
magnets and clamps.
9
Step 6 Assemble the top and bottom magnetic
structures using the assembly fixture.
10
Conclusions

• This assembly procedure has been proven to work
  on the prototype LCLS undulator.
• Manual insertion of permanent magnets is a safe
  and reliable method of assembly.
• Method can easily be transferred to industry for
  large quantity assemblies.