Keck NGAO Project Replan:
AO and Laser Systems
Donald Gavel
NGAO Team Meeting 6
April 25, 2007
Don Gavel: Keck NGAO meeting April
25, 2007
1
AO and Laser Systems Project Replan:
Outline of Presentation
•
•
•
•
Program plan overview
Purpose and approach of the replan
Key changes highlighted
Feedback from the team on schedule & level of
effort
Don Gavel: Keck NGAO meeting
April 25, 2007
2
AO and Laser System Program Overview
• AO and Laser System Design phase follows the system engineering
/ trade studies phase
• Inputs: Architecture Definitions, Study results, FRDs v.1
(June/July time frame)
• Outputs: Contributions to System Design Manual & FRDs v.2
(= Conceptual Design or Proposal level => raising funding to build)
Don Gavel: Keck NGAO meeting
April 25, 2007
3
Purpose and Approach of the Replan
• Problem: present plan is behind schedule.
• Approach: given currrent status and lessons
learned, adapt the plan to achieve key goals
using the resources available
• Play to people and institutional strengths
• Streamline the work – fewer people at higher
percentage
• Level the plan and tie to people availability
Don Gavel: Keck NGAO meeting
April 25, 2007
4
Overview of changes in 3.2, 3.3
• WBS 3.2 AO System.
• Reshuffling of personnel on four tasks.
• Two new tasks:
• atmospheric profiler
• d-IFU & LOWFS AO & Object Selection (broken out from
WBS 3.5)
• WBS 3.3 Laser Facility. Reshuffling of
personnel on three tasks.
Don Gavel: Keck NGAO meeting
April 25, 2007
5
Changes to 3.2, 3.3
WBS
Current
hours
New
hours
Change justification
3.2.2 AO
Enclosure
100
40
Enclosure is straightforward engineering.
Emissivity vs temperature is covered
elsewhere in plan
3.2.3.6.2
Deformable
Mirror
140
60
DM specification doesn’t require much
design work. Neyman & Bauman instead of
Flicker, Dekany, Bauman
3.2.3.10
Atmospheric
Profiler
-
80
Will likely need profiler for tomography. Matt
Britton lead
3.2.3.11 D-IFU
& LOWFS
Object
Selection
-
320
Need to explore a number of wide field
MOAO pickoff mechanisms. Anna Moore
lead
3.3.3 Laser
100
20
Leverage CfAO work in this area. Gavel lead
Don Gavel: Keck NGAO meeting
April 25, 2007
6
Program Plan Changes – 3.2 Details
3.2.1
AO System Architecture
3.2.2
3.2.3
3.2.3.1
3.2.3.2
3.2.3.3
3.2.3.4
3.2.3.5
3.2.3.5.1
3.2.3.5.2
AO Enclosure
Opto-mechanical
Field Rotation
Optical Relay
Optical Switchyard
Optical Support Structure
Wavefront Sensors
High order LGS WFSs
High order NGS WFS
3.2.3.5.3
3.2.3.5.4
3.2.3.6
Low Order NGS Wavefront Sensors
Calibration Wavefront Sensor
Wavefront Correctors
3.2.3.6.2
Deformable Mirror
3.2.3.7
3.2.3.8
3.2.3.9
3.2.3.10
Acquisition Cameras
Atmospheric Dispersion Correction
Alignment, Diag, Metrology & Monitoring
Atmospheric Profiler
3.2.3.11
3.2.4
3.2.4.1
3.2.4.2
d-IFU & LOWFS AO & Object Selection
Non-real-time Control
Non-RTC Software
Non-RTC Electronics
3.2.5.1
3.2.5.2
RTC Architecture Analysis & Design Study
RTC Software Module Definition
Reduce from 240h total to 40h of DG (just in case
any remaining issues). Change predecessor to
3.1.3.2.5
Change predecessor to 3.1.3.2.5. Reduce from
100 to 40h - pulled in end to 9/28
Make predecessor 3.1.3.2.5
Pull in end date to 11/2/07
Pull in end date to 11/2/07
Pull in end date to 11/2/07
Pull in end date to 11/30/07
Pull in end date to 11/16/07
Consider DG suggestion of DG lead + BB
Consider DG suggestion of DG lead + BB
VV as new lead. 40h of SK to 20h more of VV &
20h of AM
CN as new lead. 40h of SK to CN
Put CN as lead
Reduce BB from 50 to 10h. Replace 40h of RF &
30h of RD with 40h of CN. CN as lead
Replace AB hours & lead with CN (familiar w/
MAGIQ)
BB replaces 16h of SK. RD lead with 4h
Add 20h of DLM. Reduce CN & RF by 10h each
New task. MB lead at 50h. 7/23-8/31/07
New task. AM lead at 200h. DG 40h. JM 80h.
5/21-8/6/07
EJ as new lead
Remove 30h of Johnson
Remove 40h each of JC&MR & add 40h of EJ
Remove 20h each of RF& MR. Change start date
to 6/18/07
Consider replacing 20h of Reinig with Palmer
Don Gavel: Keck NGAO meeting
April 25, 2007
7
Program Plan Changes – 3.3 Details
3.3.1
Laser System Architecture
3.3.3
Laser
3.3.4
Laser Launch Facility
3.3.4.1
Laser beam transport
3.3.4.2
Laser pointing & diagnostics
3.3.4.3
Laser launch telescope
Change predecessor from 3.1.1.5 to 3.1.1.5.1
Reduce VV from 100 to 20h. DG new lead. DG to
perform with CfAO funding
Change start & end dates for all subtasks to 7/23
& 8/31, respectively
Replace 20h of SK with 16h of VV. Reduce CN
from 35 to 30h. Reduce JC from 5 to 4h
Replace 30h of AM with 15h of BB. Replace 30h
of SK with 15h of CN. Reduce JC from 20 to 10h.
Replace 50h of SK with 30h of CN. Reduce JC
from 20 to 10h. Reduce VV from 50 to 30h
Don Gavel: Keck NGAO meeting
April 25, 2007
8
Team Feedback
• WBS definitions correct and unambiguous
• Objectives feasible in the time allocated
• Availability, time commitment
Don Gavel: Keck NGAO meeting
April 25, 2007
9