=== Ion Implant Dose/Energy Calculator ===
Version: v1.0
Platform: Windows, Python 3.8+

[Function]
Input dose/energy/beam current, calculates:
  - Implant time
  - Projected range Rp (nm)
  - Lateral straggle (nm)
  - Total implanted atoms
Built-in 5 presets (B/P/As/BF2), plots:
  - Lateral dose profile (Gaussian curve)
  - Depth concentration profile
  - Wafer dose heatmap (polar)
  - Process summary table

[Usage]
1. Run: python 离子注入剂量能量计算器.py
2. Select preset or enter parameters, click "Calculate"
3. Or click "Example" / "Load Preset"

[Built-in Presets]
- Boron Punch-through (50keV)
- BF2 Medium (80keV)
- Phosphorus Deep (100keV)
- Arsenic S/D (70keV)

[Dependencies]
Python 3.8+, numpy, matplotlib
