allpix::RadialStripDetectorModel

Module: Detector models

Model of a radial strip detector. This is a model where the silicon sensor is a trapezoid and the strips fan out radially from a focal point.

#include <RadialStripDetectorModel.hpp>

Inherits from allpix::DetectorModel

Public Functions

Additional inherited members

Public Classes inherited from allpix::DetectorModel

Public Functions inherited from allpix::DetectorModel

Protected Functions inherited from allpix::DetectorModel

Protected Attributes inherited from allpix::DetectorModel

Public Functions Documentation

function RadialStripDetectorModel

explicit RadialStripDetectorModel(
    std::string type,
    const std::shared_ptr< DetectorAssembly > & assembly,
    const ConfigReader & reader,
    const Configuration & config
)

Constructs the radial strip detector model.

Parameters:

• type Name of the model type
• assembly Detector assembly object with information about ASIC and packaging
• reader Configuration reader with description of the model
• config Configuration reference holding the unnamed section of detector configuration

function getNumberOfStrips

inline unsigned int getNumberOfStrips(
    unsigned int row
) const

Get the number of strips in a given strip row.

Parameters:

• row Strip row (y-coordinate)

Return: Number of strips in a given strip row

function getStripLength

inline double getStripLength(
    unsigned int row
) const

Get the strip length in a given strip row.

Parameters:

• row Strip row (y-coordinate)

Return: Strip length in a given strip row

function getAngularPitch

inline double getAngularPitch(
    unsigned int row
) const

Get the angular strip pitch in a given strip row.

Parameters:

• row Strip row (y-coordinate)

Return: Angular strip pitch in a given strip row

function getAngularPitchMax

inline double getAngularPitchMax() const

Get the maximum angular strip pitch in all strip rows.

Return: Maximum angular strip pitch in all strip rows

function getInnerPitch

inline double getInnerPitch(
    unsigned int row
) const

Get the inner strip pitch in a given strip row.

Parameters:

• row Strip row (y-coordinate)

Return: Inner strip pitch in a given strip row

function getSensorBaseInner

inline double getSensorBaseInner() const

Get the smaller base length of the trapezoidal sensor wrapper.

Return: Length of the smaller base of the trapezoidal sensor wrapper

function getSensorBaseOuter

inline double getSensorBaseOuter() const

Get the larger base length of the trapezoidal sensor wrapper.

Return: Length of the larger base of the trapezoidal sensor wrapper

function getRowAngleMax

inline double getRowAngleMax() const

Get the maximum angle subtended by the widest strip row.

Return: Angle subtended by the widest strip row

function getRowRadius

inline double getRowRadius(
    unsigned int row
) const

Get the inner radius of a given strip row.

Parameters:

• row Strip row (y-coordinate)

Return: Inner radius of a given strip row

Note: For N rows the row_radius_ vector has N+1 values. The first element is the inner radius of the first row, the last element is the outer radius of the last row (virtually the inner radius of the nonexistent (N+1)-th row).

function getRowRadii

inline const std::vector< double > & getRowRadii() const

Get the vector of strip rows inner radii.

Return: Vector of strip rows inner radii

Note: For N rows the row_radius_ vector has N+1 values. The first element is the inner radius of the first row, the last element is the outer radius of the last row (virtually the inner radius of the nonexistent (N+1)-th row).

function getCenterRadius

inline double getCenterRadius() const

Get the radius of the sensor center.

Return: Radius of the sensor center

function getStereoAngle

inline double getStereoAngle() const

Get the sensor stereo angle.

Return: Sensor stereo angle

function getMatrixCenter

inline virtual ROOT::Math::XYZPoint getMatrixCenter() const override

Get local coordinate of the position and rotation center in global frame.

Return: Local coordinate of the position and rotation center in global frame

Note: For a radial sensor the matrix center is located in the center of the sensor, defined by the center radius

Reimplements: allpix::DetectorModel::getMatrixCenter

function getSize

inline virtual ROOT::Math::XYZVector getSize() const override

Get size of the rectangular wrapper box around the model that contains all elements.

Return: Size of the detector model

Note: The wrapper box for radial strip sensors has the dimensions:

• X: the larger trapezoid base
• Y: length of the trapezoid
• Z: sensor thickness

Warning: While the actual sensor wrapper is build as a trapezoid, the wrapper referred to by this function is rectangular

Reimplements: allpix::DetectorModel::getSize

function getStripSize

inline ROOT::Math::XYVector getStripSize(
    unsigned int row
) const

Returns the dimensions of a strip in a given row.

Parameters:

• row Strip row (y-coordinate)

Return: Dimensions of a strip in a given row

Note: For radial strip models the pixel size is the size of the smallest rectangle circumscribed around the trapezoidal strip in a given row

function isWithinSensor

virtual bool isWithinSensor(
    const ROOT::Math::XYZPoint & position
) const override

Returns if a local position is within the sensitive device.

Parameters:

• position Position in local coordinates of the detector model

Return: True if a local position is within the sensor, false otherwise

Reimplements: allpix::DetectorModel::isWithinSensor

function isOnSensorBoundary

virtual bool isOnSensorBoundary(
    const ROOT::Math::XYZPoint & local_pos
) const override

Returns if a local position is on the sensor boundary.

Parameters:

• local_pos Position in local coordinates of the detector model

Return: True if a local position is on the sensor boundary, false otherwise

Reimplements: allpix::DetectorModel::isOnSensorBoundary

function getSensorIntercept

virtual ROOT::Math::XYZPoint getSensorIntercept(
    const ROOT::Math::XYZPoint & inside,
    const ROOT::Math::XYZPoint & outside
) const override

Calculate exit point of step outside sensor volume from one point inside the sensor (before step) and one point outside (after step).

Parameters:

• inside Position before the step, inside the sensor volume
• outside Position after the step, outside the sensor volume

Exceptions:

• std::invalid_argument if no intersection of track segment with sensor volume can be found

Return: Exit point of the sensor in local coordinates

Note: This method currently only interpolates the z coordinate between the last two points and returns the last position inside otherwise

Reimplements: allpix::DetectorModel::getSensorIntercept

function isWithinMatrix

virtual bool isWithinMatrix(
    const Pixel::Index & strip_index
) const override

Returns if a strip index is within the grid of strips defined for the device.

Parameters:

• strip_index Strip index to be checked

Return: True if strip_index is within the strip grid, false otherwise

Reimplements: allpix::DetectorModel::isWithinMatrix

function isWithinMatrix

inline virtual bool isWithinMatrix(
    const int x,
    const int y
) const override

Returns if a set of strip coordinates is within the grid of strips defined for the device.

Parameters:

• x X- (or column-) coordinate to be checked
• y Y- (or row-) coordinate to be checked

Return: True if strip coordinates are within the strip grid, false otherwise

Reimplements: allpix::DetectorModel::isWithinMatrix

function getPositionPolar

ROOT::Math::Polar2DPoint getPositionPolar(
    const ROOT::Math::XYZPoint & local_pos
) const

Converts the local position in cartesian coordinates to polar coordinates.

Parameters:

• local_pos Position in local cartesian coordinates of the detector model

Return: Local position in polar coordinates

Note: The polar coordinates are defined in a system where:

• R is measured from the local coordinate center
• Phi is measured from the strip focal point

function getPositionCartesian

ROOT::Math::XYPoint getPositionCartesian(
    const ROOT::Math::Polar2DPoint & polar_pos
) const

Converts the position in polar coordinates to cartesian coordinates in the local frame.

Parameters:

• polar_pos Position in local polar coordinates of the detector model

Return: Local position in cartesian coordinates

function getPixelCenter

virtual ROOT::Math::XYZPoint getPixelCenter(
    int x,
    int y
) const override

Returns a pixel center in local coordinates.

Parameters:

• x X- (or column-) coordinate of the pixel
• y Y- (or row-) coordinate of the pixel

Return: Coordinates of the pixel center

Reimplements: allpix::DetectorModel::getPixelCenter

function getPixelIndex

virtual std::pair< int, int > getPixelIndex(
    const ROOT::Math::XYZPoint & position
) const override

Return X,Y indices of a pixel corresponding to a local position in a sensor.

Parameters:

• position Position in local coordinates of the detector model

Return: X,Y pixel indices

Note: No checks are performed on whether these indices represent an existing pixel or are within the pixel matrix.

Reimplements: allpix::DetectorModel::getPixelIndex

function getNeighbors

virtual std::set< Pixel::Index > getNeighbors(
    const Pixel::Index & idx,
    const size_t distance
) const override

Return a set containing all pixels neighboring the given one with a configurable maximum distance.

Parameters:

• idx Index of the pixel in question
• distance Distance for pixels to be considered neighbors

Return: Set of neighboring pixel indices, including the initial pixel

Note: The returned set should always also include the initial pixel indices the neighbors are calculated for

Reimplements: allpix::DetectorModel::getNeighbors

function areNeighbors

virtual bool areNeighbors(
    const Pixel::Index & seed,
    const Pixel::Index & entrant,
    const size_t distance
) const override

Check if two pixel indices are neighbors to each other.

Parameters:

• seed Initial pixel index
• entrant Entrant pixel index to be tested
• distance Distance for pixels to be considered neighbors

Return: Boolean whether pixels are neighbors or not

Reimplements: allpix::DetectorModel::areNeighbors

Updated on 2024-12-13 at 08:31:37 +0000