Level 2 Milestones WBS Level 2 Milestone 1

Level 2 Milestones WBS Level 2 Milestone 1. 4 1. 2 1. 5 1. 6 1. 7 1. 5 1. 6 1. 1 1. 2 1. 6 1. 8 1. 5 1. 2 1. 4 1. 2 1. 6 1. 2 1. 7 1. 5 1. 3 1. 4 1. 8 1. 6 1. 7 Actuator downselect (Complete) Coating contract placed Fiber received and verified Prototype Detectors and Front-End Electronics Delivered to Cryostat Supplier ICD’s for all of the subsystems controlled by the ICS Released Splicing Testing & Validation Complete Receipt of CCD NIR All Interface Control Documents Completed and Approved Fused Silica Lenses Ground and polished EM Spectrograph Fully Verified Preliminary pipeline running end-to-end on DESI sims End to End Fibre Test, Proto DESI Lot Complete Fused Silica lenses Coated Focal plate structure ready for integration ADC Lenses Ground and Polished Lens cells completed and shipped to FNAL Scope alternative for additional spectrographs Receive cells and barrel from FNAL ADC Lenses coated ICS Prototype Development Complete Delivery of FP slice to I&T Full Assembly and Verification of Ring, Cage and Barrel or Prototype Barrel Focal plate loading and testing complete Target Selection Pipeline Operational at Scale Unit 2 -5 Spectrographs Fully Assembled and Verified Unit 6 Spectrograph Test and Calibration Complete Unit 10 Spectrograph Test and Calibration Complete ICS Complete H. Heetderks 09/09/2014 DESI CD-1 Review P-9 Date Jun-14 Oct-14 Dec-14 Feb-15 Mar-15 Apr-15 Jun-15 Sep-15 Nov-15 Jan-16 Feb-16 Mar-16 May-16 Jul-16 Oct-16 Nov-16 Dec-16 Jul-17 Oct-17 Nov-17 Dec-17 Jan-18 Jul-18 Aug-18 1