1. M2 Status & Near Term Major Milestones C. Araujo/B. Gressler 1

2. M2 Status Oct 2014: M2 substrate received by Exelis (Harris) 2 Now in Storage @ Harris waiting for optical processing 

3. 2015 - Upcoming Reviews 3 May Optical Fab. STE design Cell Assy Fab. Readiness / Cell weldment design July Optical Fabrication & Test Readiness - Part1 Shipping container modifications/packaging Support Pad Design & Testing Cell Assembly Handling Equipment (M2 cart and cover) September Cell Assy final Design Mirror control system Finished M2/cell Assy integration & test readiness November Optical Fab & test readiness - polish

4. M2 Schedule Summary 4 Needed at site by Mar 2018 (60 days float)

5. M2 Status 5

6. 6

7. Optical Fab STE 7 7 Fab equipment Full tool rotation device Large bridge profilometer Small bridge profilometer Swing Arm Profilometry Full tool polisher

8. Handling Equipment 8 Vacuum-lifter Steel support weldment Support Ring Full tool rotation device

9. M2 processing to begin soon 9

10. M2 Grind and Polish 10

11. Processing up to ion figuring 11

12. M2 Test Set PDR 12 Reduces stitching errors due to high frequency discontinuities between CGHs. Single CGH 28”x28” (MHAT) Collimator 40” CA larger test aperture allows the entire CA of M2 to be measured as a single zone shorter collimator height will enable the M2 to be tested with a lower ceiling height 3m New Design Mount M2 in stationary frame Rotate interferometric test set components

13. M2 Test Set 13 Test set modeling CodeV and Zemax Test Set Hardware

14. M2 Cell Design Analysis FEA performance to support cell weldment long lead procurement Mirror correctability confirmed 14

15. M2 Surrogate Designed 15

16. M2 Cover & Cart previewed 16

17. Pad designs reviewed 17

18. Container mods reviewed 18

19. M2 Issues LSST producing ILCs to enable testing of M2 actuators M2 lifting fixture vs spreader bar Final details of witness samples for pull tests Action items from M2 cart design review Shipping container mods 19

20. Near term Prepare for M2 FDR in Sept Includes M2 Controller Design Optical Fab & Test RR – mid Oct/Nov Working to update PMCS 20