1. LCLS-II Prototype Vacuum Vessel (VV) and Helium Gas Return Pipe (HGRP) FDR Planned Quality Control Effort (QC) Ken Premo 12/04/14

2. Prototype QC, Summary This plan applies to prototype Vacuum Vessel (VV) and prototype HGRP only. Separate plan will be developed for component production runs. QC will be very similar to previous order of components from vendor (4 VVs, 4 HGRPs) Two components of QC: – Vendor responsibility – FNAL QC check of important areas

3. Vacuum Vessel Prototype QC Vendor Responsibility Certificate of Conformance – Welders certified in accordance with ASME BPV Code – Personnel doing NDT are in compliance with ASNT recommended practice Documentation – Test Summary Report – Helium Mass Spectrometer Report (leak check) – Dimensional Inspection Form – Welding Procedure Specification (WPS), Procedure Qualification Record (PQR), Welder Qualification Test Record (WQTR) Certified Material Test Reports

4. HGRP Prototype QC Vendor Responsibility Certificate of Conformance – Welders certified in accordance with ASME BPV Code – Personnel doing NDT are in compliance with ASNT recommended practice Documentation – Test Summary Report – NDT Report – Pressure Test Report – Helium Mass Spectrometer Report (leak check) – Dimensional Inspection Form – Welding Procedure Specification (WPS), Procedure Qualification Record (PQR), Welder Qualification Test Record (WQTR) Certified Material Test Reports

5. Prototype VV and HGRP Incoming QC, FNAL Effort Check vendor documentation for completeness and conformance to requirements Visual inspection for damage during transportation Dimensional checks of critical locations – Components set up in ICB production floor and laser tracker used by IB4 group for measurements – Chosen locations for measurement are partially derived from recommendations from DESY (Thanks to Kay Jensch) – Locations are directly related to function of component – Results of measurements will be reviewed by responsible engineer (SOTR) in order to determine suitability of component for use

6. Prototype Vacuum Vessel Incoming QC, FNAL Effort Measurements primarily focused upon the coupler ports, the top ports, the end flanges, and pipe straightness. Coupler ports (8) – Location, flatness, waveguide mounts Top ports (3) – Location, flatness, parallelism End Flanges – Location, perpendicularity Pipe – Straightness

7. Prototype HGRP Incoming QC, FNAL Effort Measurements focused on the string mounting pads, Invar rod guide holes, and the pipe ends String mounting pads – Mounting holes: location, X and Y – Surface: flatness, parallelism Invar Rod holes – Hole location, X and Z – Diameter Pipe ends – Diameter – Position

8. Prototype VV and HGRP Incoming QC, FNAL Effort Work to be done: – Define serialization scheme for VV and HGRP – Measurement traveler to be developed for QC measurements – Drawings detailing QC measurements required, datum, etc. will be developed; draft QC prints for HGRP currently being reviewed by QC – Summary report of measurement results Travelers and summary reports will be stored in Vector database (vector.fnal.gov) Based on experience from prototypes, the initial traveler, drawings, & summary report could be revised prior to production quantities