ActsFatras::PlanarSurfaceDrift Struct Reference

The PlanarSurfaceDrift takes an intersection in the nominal surface and projects the ends into the readout surface, which can be at : -1, 0, 1. More...

#include <ActsFatras/Digitization/PlanarSurfaceDrift.hpp>

Public Types
using	Segment2D = std::array<Acts::Vector2, 2>
	Shorthand for a 2D segment.

Public Member Functions
Segment2D	toReadout (const Acts::GeometryContext &gctx, const Acts::Surface &surface, double thickness, const Acts::Vector3 &pos, const Acts::Vector3 &dir, const Acts::Vector3 &driftdir) const
	Drift the full 3D segment onto a surface 2D readout plane.

Detailed Description

The PlanarSurfaceDrift takes an intersection in the nominal surface and projects the ends into the readout surface, which can be at : -1, 0, 1.

A Lorentz drift angle can be applied.

Member Typedef Documentation

Segment2D

using ActsFatras::PlanarSurfaceDrift::Segment2D = std::array<Acts::Vector2, 2>

Shorthand for a 2D segment.

Member Function Documentation

toReadout()

Segment2D ActsFatras::PlanarSurfaceDrift::toReadout	(	const Acts::GeometryContext &	gctx,
		const Acts::Surface &	surface,
		double	thickness,
		const Acts::Vector3 &	pos,
		const Acts::Vector3 &	dir,
		const Acts::Vector3 &	driftdir ) const

Drift the full 3D segment onto a surface 2D readout plane.

Parameters

gctx	The current Geometry context
surface	The nominal intersection surface
thickness	The emulated module/depletion thickness
pos	The position in global coordinates
dir	The direction in global coordinates
driftdir	The drift direction in local (surface) coordinates

Note

a drift direction of (0,0,0) is drift to central plane any other a drift direction with driftDir.z() != 0. will result on a readout on either + 0.5*depletion or -0.5*depletion

Returns

a Segment on the readout surface

Note

without masking