Files
Atomizer/studies/M1_Mirror/SAT3_Trajectory/STUDY_REPORT.md
Anto01 b62605a736 refactor: update SAT3_Trajectory to 9 design variables with refined bounds
Updated configuration based on user adjustments:
- Reduced from 11 to 9 design variables (disabled blank_backface_angle and inner_circular_rib_dia)
- Refined parameter bounds for lateral supports

Design Variable Changes:
- lateral_inner_angle: min 20.0° (was 25.0°)
- lateral_outer_pivot: range 4.0-9.0mm, baseline 5.5mm (was 9.0-12.0mm, baseline 10.40mm)
- lateral_middle_pivot: range 12.0-25.0mm (was 15.0-27.0mm)
- blank_backface_angle: disabled (fixed at 4.00°)
- inner_circular_rib_dia: disabled (fixed at 534.00mm)

Documentation Updated:
- README.md: Updated design variable table with correct ranges and baselines
- STUDY_REPORT.md: Updated to reflect 9 enabled variables
- optimization_config.json: User-modified bounds applied

Rationale:
- Focus optimization on lateral supports and whiffle tree
- Fix geometry parameters to reduce search space
- Tighter bounds on critical lateral parameters

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
2026-01-29 12:20:41 -05:00

4.1 KiB

SAT3_Trajectory - Study Report

Status: pending optimization Optimization Started: pending Optimization Completed: pending Total Trials: pending


Optimization Summary

Metric Value
Algorithm TPE (Tree-Parzen Estimator)
Design Variables 9 (enabled)
Total Trials pending
Successful FEA pending
Failed FEA pending
Best Trial Number pending
Best Weighted Sum pending nm

Best Design

Objectives

Objective Best Value Baseline Improvement
total_filtered_rms_nm (PRIMARY) pending nm 4.30 nm pending %
coma_rms_nm (logged) pending nm 9.16 nm pending %
astigmatism_rms_nm (logged) pending nm 6.55 nm pending %
trefoil_rms_nm (logged) pending nm 6.44 nm pending %
spherical_rms_nm (logged) pending nm 10.51 nm pending %
linear_fit_r2 pending 1.0000 pending
mass_kg pending kg pending kg pending %

Design Parameters

Parameter Best Value Baseline Delta
lateral_inner_angle pending deg 26.79 deg pending
lateral_outer_angle pending deg 14.64 deg pending
lateral_outer_pivot pending mm 5.5 mm pending
lateral_inner_pivot pending mm 10.07 mm pending
lateral_middle_pivot pending mm 20.73 mm pending
lateral_closeness pending mm 11.02 mm pending
whiffle_min pending mm 40.55 mm pending
whiffle_outer_to_vertical pending deg 75.67 deg pending
whiffle_triangle_closeness pending mm 60.00 mm pending

Fixed parameters (not optimized):

  • blank_backface_angle = 4.00 deg
  • inner_circular_rib_dia = 534.00 mm

Mode-Specific Analysis

Which Modes Improved Most?

Analysis pending - shows which aberration types benefited from optimization

Sensitivity Matrix

Analysis pending - shows which modes respond to axial vs lateral loads

R² Validation

Analysis pending - confirms physics model held throughout optimization


Convergence Analysis

Total Filtered RMS vs Trial

Plot pending

Mode-Specific RMS vs Trial

Plot pending - overlay coma, astigmatism, trefoil, spherical

Parameter Evolution

Plot pending - shows how design variables evolved


Key Findings

1. Trajectory Method Validation

Analysis pending

  • Did R² stay > 0.95 throughout?
  • Were any designs nonlinear?
  • Did the physics model hold?

2. Mode-Specific Insights

Analysis pending

  • Which modes improved most?
  • Which modes are dominant now?
  • Does coma reduction correlate with lateral support changes?

3. Comparison with V15 NSGA-II

Analysis pending

  • How does best trajectory result compare to V15 Pareto front?
  • Is trajectory method competitive?
  • What insights does trajectory provide that discrete WFE doesn't?

4. Lateral vs Axial Sensitivity

Analysis pending

  • Which parameters affect which modes?
  • Are lateral supports primarily controlling coma (as predicted)?
  • Are axial supports (whiffle tree) controlling spherical?

Recommendations

Next Steps

Analysis pending - based on results, suggest:

  1. Whether to proceed with SAT trajectory optimization
  2. Which modes need further attention
  3. Whether to refine parameter bounds
  4. Additional angles to include in trajectory

Parameter Bounds Refinement

Analysis pending

  • Did any parameters hit bounds?
  • Should ranges be expanded or narrowed?

Future Studies

Analysis pending

  • SAT3_Trajectory_SAT (100 FEA + 10K surrogate)
  • Multi-objective trajectory (optimize modes separately)
  • Trajectory + mass trade-off

Files Generated

  • 3_results/study.db - Optuna database with all trials
  • 3_results/optimization.log - Full execution log
  • 2_iterations/iter_XXXX/ - FEA results for each trial
  • (Trajectory analysis plots - TBD)

Lessons Learned

To be filled after optimization completes


Report template created: 2026-01-29 To be updated after optimization completes