Prime Focus Imaging Spectrograph

Transcription

1 Prime Focus Imaging Spectrograph Status 8 of 9 collimator and 6 of 9 camera lenses received (including all lenses) Slitmask mechanism assembled and wired, waveplate mechanism assembled Structure in fabrication at Rutgers Waveplates shipping; beamsplitter due next month Mass under control: margin improved 11.8! 15.3 kg Control system wiring, S/W in progress With >96% awarded, use of budget reserve is 77% Concerns: schedule Oct 26, 2003 SSWG 1 Optics Asphere delayed on month "Pickup" element: awaits asphere Still in fab; awaiting new delivery date Vendor broke 2 NaCl blanks; new ones just received Collimator- looks like it will be ready in time for the structure (Jan) Camera- Unless coating goes faster than vendor schedule (12 wks), will becomes critical path and could delay delivery. Need by Mar Detector- Want 1 month before camera Oct 26, 2003 SSWG 2

2 Collimator Fused Quartz Fused Quartz Fused Quartz (NaCl) Oct 26, 2003 SSWG 3 Fused Silica Camera (Fused Silica asphere) Fused Silica (Fused Silica pickup ) NaCl Fused Silica (Fused Silica field flattener) Oct 26, 2003 SSWG 4

3 The Prime Focus Imaging Spectrograph Grating Server Collimator Optics Camera Detector Dewar Slit Mask Server Filter Server Waveplate Mechanism Articulation Rail Oct 26, 2003 SSWG Open Truss Structure 5 Fabry-Perot Etalons Structure & Mechanisms Slitmask Mechanism Structure Base Jig Waveplate Mechanism Oct 26, 2003 SSWG 6

4 Item CaF2 Blanks Fused Silica Blanks NaCl Blanks Fused Quartz Blanks Lens Fabasphere spheres MgF2/ Solgel coatings Multilayer Coatings PDR Estimate $98,116 $168,714 Procurement Status Now $120,260 $9975 $10,020 $13,650 $33,000 Low bid Deliv Company ery Oken Dynasil Hilger Oken Coastal 75 d 20 wk $31,215 Janos 8 wk Cleveland $55,918 Crystal 8 wk Spectrum $12,300 Thin Films 6 wk Rubicon Heraeus TORC, Tinsley Coastal, TORC, HJOL soliciting more Waveplates $120,000 $83,000 Halle 6 mo none Karl 30 Beamsplitter $44,100 $53,100 Lambrecht wk Reynard Oct 26, 2003 SSWG 7 80d 4 wk 6 wk Other bidders Bicron Corning, Oken RMI Status Received, including $32,800 in spares Received, including 1 spare Received, including 4 replacements Received Procurement Status - II Item VPH Substrates VPH Coatings VPH Fabrication PDR Estimate $30,000 Now Company $24,950 Wasatch Low bid $11,850 United Lens deliv 30 d $3,975 Spectrum Thin Films 8 wk Other bidders HJOL, Coastal CSL, KOSI Status Received Quotation SR Grating $8,696 Richardson 10 wk Zolotech Quotation Color Filters Slitviewer Optics Slitmask Cutter $10,000 $120,000 $10,000 $4,700 TORC $123,405 US Laser 6 wk 4 mo Coastal, HJOL, Edmund, Zygo LPKF, ART Estimate Total $590,930 $610,014 Oct 26, 2003 SSWG 8

5 $5,000,000 Budget: Cost-to-Completion PDR CDR now Delivery $4,000,000 $3,000,000 Est Cost to Completion Total Expenditures 20% Budgeted Reserve Baseline $2,000,000 UW $1,000,000 RU $- SAAO With >96% of major purchased equipment awarded, have used 77% of budgeted reserve Remaining $169K available for mishaps and schedule problems Would pay for ~ 5 mo schedule stretch at highest salary burn rate Oct 26, 2003 SSWG 9 Budget: Prognosis Positive deltas spare blanks: $32,800. Will probably be recovered. SAAO labor ForEx losses $41K (how is this accounted?) NaCl and Fused Silica spares $8K design subcontractor ~$30K machining underestimates ~$20K Negative Deltas conservative PDR mechanism costs ~$9K Lens Fabrication savings ~25K Oct 26, 2003 SSWG 10

6 Concern: Schedule Optics delivery critical path Mechanism waterfall easily disrupted testing delayed until enough of control system is wired Testing phase: graduate student, postdoc (UW contribution) Detector delivery has only 4 weeks slack Etalon delivery has 2 months slack Ship 23 Aug, 2004 Arrive Sutherland 1 Oct, 2004 Uncertain commissioning schedule Oct 26, 2003 SSWG 11 Mechanical Schedule Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Mechanical Fabrication and Test Structure Slit Mask Manufacture Slitmask Physics Shop Assemble Slitmask Wire Slitmask Test Slitmask Slitmask Postfab & Coating Slitmask Holder Fabrication (40) Articulation Mechanism Manufacture Articulation Mechanism Physics Shop Manufacture Articulation Weldment PSL Shop Assemble Articulation Mechanism Wire Articulation Mechanism Test Articulation Mechanism Articulation Mechanism o Postfab & C Wave Plate Mechanism Manufacture Wave Plate Mechanism Physics Shop Assemble Wave Plate Mechanism Wire Wave Plate Mechanism Test Wave Plate Mechanism Wave Plate Mechanism o Postfab & C Filter Mechanism Grating Mechanism Shutter Mechanism Oct 26, 2003 SSWG 12

7 Optics Schedule Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Optics Fabrication & Test Lenses Lens Fabrication Coll Lenses - Fabrication Collimator Pickup Replace NaCl Blank Fabricate Coll NaCl Lens Cam spheres - Fabricate Asphere - Fabricate Camera Pickup Lens Coating RFP for Optics Coatings Optics Coating - Lot 1 Optics Coating a- Lot 2o - Collim Optics Coating a- Lot 2a - Camer Optics Coating a- Lot 3o - Collim Optics Coating a- Lot 3a - Camer VPH Gratings SR Grating Wave Plates Beam Splitter Color Filters Slit Viewer Mirrors Optomechanical Detailed Optomechanical Design Pilot Group Fabrication, Assembly & Test Fabrication (oc) Pilot Group Collimator Assembly (oc) Camera Assembly (oc) Receive Detector Receive Etalons 1&2 Oct 26, 2003 SSWG 13 Control System Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Mechanical Fabrication and Test Electronics Design Finalize Wiring Diagrams Procure Temp cond & relay boards Procure PSC1 interlock bd Procure PSC2 interlock bd Procure analog signal board PDS Cold Box Design PDS Cold Box Manufacture PDS Cold Box Physics Shop Wire Up PDS Cold Box Test PDS Cold Box SCB Box PSC1 Cold Box PSC2 Cold Box Control System Software Specify CCD Data Clusters Specify TCS Data Clusters Specify PFIS Data Clusters Implement Server (Parsing, e State Tabl Implement Mechanism Servers Implement CCD Simulator Implement TCS Simulator Specify PFIS Command List Implement Client (User Inteface) Oct 26, 2003 SSWG 14

8 Testing and Commissioning Schedule 2004 SepOct NovDecJan FebMar Apr MayJun Jul AugSepOct NovDecJanFeb Phase 4 - Fabrication & Test PFIS Assembly & Integration Build Wire Harness Articulation I&T Collimator Integration Collimator Alignment Testing Slitmask I&T Waveplate I&T Shutter I&T Etalon I&T Camera Integration Detector I&T Camera Alignment Testing Grating I&T Filter I&T Beam Splitter I&T PFIS Testing Support Tasks Phase 5 - Installation & Commissioning Pack Ship Unpack Assemble in Cape Town Acceptance Testing Ship to Sutherland Basic Calibrations Science Calibrations Oct 26, 2003 SSWG 15 Some Questions Filter complement Etalon interference filters currently planned for imaging only (85 mm dia), not spectroscopy (125 x 85). Some suggestion for subset of larger ones for multislit applications (eg 510 nm region). Others? No plan for interference filters for imaging below 430 nm (etalon limit). Problem? How will we commission if SALT does not have full mirror complement? What is absolute minimum for turnover? Oct 26, 2003 SSWG 16