Drag the scene to rotate. Use the mouse wheel to zoom. Parameter changes are applied automatically. Use “Pause/Resume” to stop or continue the simulation, and “Reset” to reinitialize the particle.

Each floating graph can be minimized, maximized, dragged, resized, or closed completely. Use these buttons to reopen a closed graph. In accumulated history mode, only the position and temperature graphs use a separate history buffer independent of the chart time window; the camera view uses its own projected trajectory trail. The PSD remains window-based, and the spectrogram tracks the PSD evolution over time. The absorption and luminescence-spectrum graphs show the spectral inputs used by the internal-temperature model.

This is a virtual imaging camera. The selected azimuth/elevation defines the optical axis; particle positions are projected onto the transverse sensor plane relative to the selected camera target. It is a diagnostic visualization only and does not modify the dynamics.

Select a scale regime and the simulator will switch to a stable reference case for that regime.

Save the current parameter set locally in this browser, export cases as portable JSON, and import them on another computer.

No parameter sweep is loaded. Normal recording remains active.

In nested mode, list axes from outermost to innermost. The first axis defines the restored groups; all remaining axes are swept inside each group.

Record simulation data as CSV for quick inspection or as Float64 binary blocks plus JSON metadata for long scientific exports. Complete absorption/emission spectra can be exported independently of the normal parameter sweep mode.

Choose how many particles are present, then choose which particle to edit. The particle physical preset only updates density and refractive index. It is intentionally independent from the laser spectral source used in the thermal model.

Gas preset: Air / N₂. The selected gas changes molecular mass in the Epstein damping and gas thermalization estimates.

The average endcap voltage controls the axial curvature. The imbalance creates an effective axial DC field, allowing the equilibrium position to be shifted along z. The radial compensation voltages create effective DC fields E_x and E_y for radial position control. The field factors η_ec and η_r can be adjusted later from FEM or experimental calibration. When Paul trap enabled is off, all RF, endcap, and radial-compensation electric forces are ignored while the configured voltages are preserved.

Particle physical properties and laser spectral sources are now intentionally independent. Generic presets are only reference spectra for exploring internal-temperature dynamics. Uploaded CSV tables are automatically saved in the browser-local spectral library and should be used when calibrated experimental absorption/emission data are available. T_int remains the only internal-temperature state variable.

Manual damping adds a pure viscous force −mΓ_manualv without adding thermal noise. In same-value mode, one Γ is applied to x, y, and z; in individual mode, each degree of freedom has its own Γ. Automatic feedback damping is a cold-damping actuator: when enabled it applies −mΓ_feedbackv on the selected axes until the velocity is below the chosen limit, with an optional maximum force cap. If the spatial gate is enabled, feedback acts only inside the ellipsoid (x²+y²)/(η_rr₀)² + z²/(η_zz₀)² ≤ 1.

Choose how many optical tweezers are available in the simulation, then select which one to edit. The simulation can use up to 10 optical tweezers. Beam colors follow the selected wavelength; UV and IR beams are displayed using pseudo-colors. The Gaussian-envelope views are visual aids based on the calculated waist w0 and Rayleigh length zR; the optical-force model is unchanged. The 3D Gaussian envelope uses projected transverse rings to make the beam volume easier to read.