<Keck NGAO Team Meeting #8>

9:00 a - 6:00 p (Pacific Daylight Time)

Mon, July 9 to Fri, July 13, 2007

Center for Adaptive Optics, UC Santa Cruz

Telecon attendees: 877-280-4645 passcode 540030 Videoconference IP: 128.114.22.14

Keck conference rooms

Monday: Hualalai (IP#128.171.99.70, 881-3534 console, 881-3522 backup)

Tues: Mauna Kea (IP#128.171.99.74, 881-3890 console, 881-3806 backup)

Wed-Fri: Kamuela (IP#128.171.99.69, 881-3533 console, 881-3505 backup)

Directions: CfAO web site (.html) and Directions to the Center (.html)

---

In propria persona (full week):	Bauman, Dekany, Gavel, Max, Moore, Neyman, Velur, Wizinowich
In propria persona (partial week):	Le Mignant (Mon & Tues), McGrath (Mon - Wed, Thur/Fri TBC)
In effigie (e.g. on the phone - partial week (all TBC...?)):	Adkins (Mon pm Requirements summaries, Thurs pm Design choices & FRD or Program structure)	Bouchez (TBD)	Britton (Mon am Requirements summaries)	Chin (Tues & Wed Reports, Thurs am Architecture ranking, Thurs pm Design choices & FRD)	Johansson (Mon Summaries, Tues & Wed Reports, Thurs am Architecture ranking, Thurs pm Design choices & FRD)

---

Action Items from the meeting: Action items. Action Item Status as of Nov 14, 2007.

Minutes:

Claire's notes MondayNotes.txt TuesdayNotes.txt WednesdayNotes.txt ThursNotes.txt

Neyman's notes MondayNotes.doc

System Architecture Goals

• Identify & rank candidate architectures
• Develop architecture system-level cost estimation
• Progress on subsystem functional requirements
• Understanding of how the different architectures imply different program structures (for example, a Keck upgrade could offer an incremental approach to development & science return)

Reference Material

System Requirements Summary (Wizinowich):

• Science Requirements Summary Summary of Required Requirements Changes(SCRD & SRD).

Architecture Report Contents:

• Revised working definition of each candidate architecture (e.g. marked up architecture poster)
• Summary of requirements satisfaction (e.g. areas of performance concern)
• Summary of technical pros and cons, including major risk items
• Initial ROM development cost estimate & subjective operations cost estimate

Candidate Architectures

• • #1 SplitRelay - Split 20" Narrow field instruments / 120" d-NIRI relay architecture
  • #2 AM2 - Adaptive secondary mirror architecture(s)
  • #3 LargeRelay - Single 180" TFoV relay architecture working session
  • #4 KI Upgrades - Keck I upgrade path architecture
  • #5 CascadedRelay - A variant of LargeRelay in which a 2nd stage is used for narrow-field instruments, reducing size
  • #6 TBD

Retreat Agenda

Mon, July 9 <--- Goal is to understand the requirements, particularly performance and science instrument reqs.

• 8:45 am Arrival
• 9:00 am Review agenda and meeting goals (including Report contents) (Dekany)
• 10:00 am Summarize/review results of performance budgets (Britton)
• 10:30 am Summarize/review results of trade studies (Neyman)tradestudysummary.ppt
• 12:00 pm Lunch
• 1:00 pm Summarize/review science requirements impacting AO architecture - review summary tables (Max) * 070709_NGAO_RollUp_v1.xls * 070709_NGAO_Inst_Suite_v1.xls * 070709_Max_SciReqs.ppt: 070709_Max_SciReqs.ppt
• 1:55 pm Summarize/review science operations requirements impacting AO architecture (Le Mignant)
• 2:05 pm Summarize/review system requirements impacting AO architecture (Wizinowich)
• 3:00 pm Review top-down candidate architectures (Dekany)
• 3:30 pm Working session #1 - Split 20" Narrow field instruments / 120" d-NIRI relay architecture (Proposed: Bauman, Le Mignant, McGrath, Moore, Velur, Wizinowich)
• 3:30 pm Working session #2 - Adaptive secondary mirror architecture (Proposed: Dekany, Gavel, Max, Neyman) KAON485 ASM Trade Study ASM Schematic
• 6:00 pm Adjourn

Tues, July 10 <-- Goal here is to see how our top-down architectures measure up in terms of meeting reqs and using our favored subsystems

• 8:00 am Working session #1 (cont) - Split 30" Narrow field instruments / 120" d-NIRI relay
• 8:00 am Working session #2 (cont) - Adaptive secondary mirror
• 10:30 am Report #1 - Adaptive secondary mirror architecture (All) * 11:00 am Report #2 - Split 20"/120" architecture (All)
• 11:30 pm Lunch at CfAO
• 12:30 pm Working session #3 - Single 180" TFoV relay architecture working session (Proposed: Dekany, McGrath, Moore, Neyman, Velur)
• 12:30 pm Working session #4 - Keck I upgrades architecture working session (Proposed: Bauman, Gavel, Max, Wizinowich) KAON461 Upgraded Keck AO Performance KAON462 Keck AO Upgrade Trade Study Keck AO Schematics
  • 4:00 pm - 5:00 pm Science Team Q&A Session (Law, Max, McGrath)
• 5:30 pm Report #3 - Single 180" TFoV relay architecture (All)
• 6:00 pm Report #4 - Keck I upgrades architecture (All)
• 6:30 pm Dinner at CfAO

Wed, July 11 <--- Goal here is to allow new ideas to be pursued sufficiently (these may be small variations of a top-down approach).

• 8:00 am Brainstorming Session (All)
• 9:00 am Brainstorm Architecture #5 (Teams TBD)
• 9:00 am Brainstorm Architecture #6
• 12:00 pm Lunch
• 1:00 pm Brainstorm Architecture #5 (cont.)
• 1:00 pm Brainstorm Architecture #6 (cont.)
• 3:00 am Report #5 - Architecture #5 (All)
• 3:30 am Report #6 - Architecture #6 (All)
• 4:00 pm Review Afternoon Assignments (All)
• 4:00 pm - 5:00 pm Science Team Q&A Session (Cancelled)
• 6:00 pm Adjourn

Thurs, July 12 <--- Goals here are to agree on architecture rankings and understand the context of our architectures in a larger program (e.g. costing and phasing)

• 8:30 am Review Previous Day Assignments (All)
• 10:00 am Initial Architecture Ranking based on Evaluation Criteria <-- should this await the program discussion? Architecture Comparison
• 12:00 pm Lunch
• 1:00 pm Design Choices (what's common and what's architecture dependent) (Wizinowich)
• 2:00 pm Functional Requirements Document Overview (Wizinowich) FRD v0.1
• 2:30 pm FRD Development working session
  • AO system architectural assumptions (Neyman)
  • Laser system architectural assumptions (Velur)
  • AO system optical requirements (Neyman to define participants)
  • Laser system optical requirements (Velur to define participants)
• 2:30 pm Program Structure working session (Dekany, Gavel, Max, Wizinowich)
• 4:00 - 5:00 pm Science Team Q & A Session (Barth, Dekany, Gavel, Max, McGrath, Wizinowich) (TBC)
• 5:30 pm Program Structure Report and Discussion (All)
• 6:15 pm FRD Issues Discussion (All)
• 7:00 pm Dinner at CfAO

Fri, July 13 <-- Goal here is to set stage for next steps.

• 8:30 am Science Team Report / Issues
• 9:45 am Design Choices (what's common and what's architecture dependent) (Wizinowich)
• 9:45 am - 1:00 pm Work on System Architectures Options Summary (Moore, McGrath)
• 10:45 am Functional Requirements Document Overview (Wizinowich) FRD v0.1
• 11:30 am FRD Development working session
  • AO system architectural assumptions (Neyman)
  • Laser system architectural assumptions (Velur)
  • AO system optical requirements (Neyman to define participants)
  • Laser system optical requirements (Velur to define participants)
• 11:30 am Program Structure working session (Dekany, Gavel, Max, Wizinowich)
• 12:00 pm Lunch
• 2:30 pm Program Structure Report and Discussion (All)
• 3:00 pm FRD Issues Discussion (All) * FRD_outline.doc:
• 3:30 pm Action Items & Schedule Summary (All)
• 4:00 pm Adjourn (Whoever is left)

FRD Development Resources and Drafts

* 070713_NGAO_FRD_Design_Choices.pdf: Summary of commonality between top-ranked architectures as of 070713