AO Opto-mechanical Design Status and Issues

1
AO Opto-mechanical Design Status and Issues

• Now carrying 100 mm 1st relay and pickoff
  switchyard as baseline
• Optical prescription (zemax), throughput/emmisivit
  y, and wavefront quality characterization
  available
• Need to construct wfe budget in conjunction with
  instruments
• DMs identified, TT mechanisms out for ROM
  estimates
• Opto-mechanical layout first-cut accomplished,
  proceeding to more detailed drawings
• Interacting with LOWFS design team
• Work remaining to do
• Optical tolerance analysis
• Thermal, flexure, and vibration analysis of table
  / mounting system
• FRD update
• Design manual

2
RTC Design Status and Issues

• Baseline architecture is massively parallel
  processing paradigm. Still looking strong
• Tomography algorithm Iterative Fourier domain
  preconditioned back projection tomography
• Processors
• Board and processor count and costing methodology
  established
• On board and board to board communication
  bandwidths understood
• Software The main wavefront reconstruction and
  tomography algorithms have been evaluated for
  feasibility in mpp framework
• Main exception is split-tomography algorithm to
  handle tip/tilt data
• Good news radial voxel algorithm (which saves
  processors and ) looks doable
• Work remaining to do
• Code testing procedures definition
• Design document (in progress outline and some
  content generated)