1. LCLS Undulator Alignment and Motion Review 1 LCLS schematic view LCLS Undulator Alignment and Motion Review

2. 2 The LCLS Undulator

3. LCLS Undulator Alignment and Motion Review 3 The LCLS Undulator System has extremely tight tolerances for alignment. Tight for the initial placement of the components relative to each other. Tight for the position of those installed components relative to the electron beam. The LCLS Undulator and Metrology groups have devised equipment and procedures to accomplish this.

4. LCLS Undulator Alignment and Motion Review 4 The committee is charged with reviewing the plans to see that they meet the tolerances required for the FEL to operate. The committee is asked to evaluate the following: 1) Is the plan for establishing and maintaining undulator alignment sufficient for the operational needs of the Undulator System? 2) Is the plan complete? 3) Are the systems under development capable of meeting the tolerances needed for the alignment plan to be successful? 4) Which technical aspects of the plan represent significant risk to the success of the project? The committee is asked to report on its findings in a written report within a reasonable time following the review.