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&CELL: PLANE


direction

Specifies which coordinate is constant along the plane. Can have one of the following 4 values:

Direction Meaning Coordinate system
X Plane parallel with the y-axis Cartesian
Y Plane parallel with the x-axis Cartesian
R Circular plane Polar
PHI Plane through the origin Polar


coordinate

The coordinate at which the plane is located, in cm for X, Y and R and in degrees for PHI.

The r coordinate must be strictly positive (non-zero).

[No default, the coordinate is mandatory.]


potential

Optional indication of the potential, in Volt, of the plane.

[Default: an earthed plane, at 0 V.]


label

A label by which the plane can be referenced in SELECT statements, for instance when computing signals induced in the plane by moving charges.

The label is a single alphabetic upper case character. You may type a longer string, but only the first character will be stored.

A label is not mandatory, but signals induced in a plane are only computed if the plane can be selected, and this can only be done if the plane has a label.

[By default, no label is assigned to a plane.]


STRIP

Anticipates read-out of a part of the plane.

Signals in strips are computed with weighting fields that are exclusively valid for parallel plate chambers without wires.

Subdivisions are permitted as follows:

Subdivision Permitted with Unit
R-STRIP PLANE PHI=... cm
PHI-STRIP PLANE R=... degrees
X-STRIP PLANE Y=... cm
Y-STRIP PLANE X=... cm
Z-STRIP all planes cm


strip_min

Indicates the starting point of the strip.

The location should be given in degrees for phi-sectors, in cm for all other strips.

[Mandatory parameter, no default provided.]


strip_max

Indicates the end point of the strip.

The location should be given in degrees for phi-sectors, in cm for all other strips.

[Mandatory parameter, no default provided.]


strip_label

A label by which the strip can be referenced in SELECT statements, when computing signals induced in the strip by moving charges.

The label is a single alphabetic upper case character. You may type a longer string, but only the first character will be stored.

A label is not mandatory, but signals induced in a strip are only computed if the strip can be selected, and this can only be done if the strip has a label.

[By default, no label is assigned to a strip.]


gap

Indicates the gap width to be used when computing the weighting field for the strip.

The gap is specified in cm for strips in x-, r- and y-planes, and in degrees for strips in phi-planes.

[By default, this is taken to be the distance to the parallel plane, if there is one, otherwise the distance from the plane to which the strip belongs to the nearest electrode.]


representations

The planes will be displayed using the PLANES representation.

Strips, if any, are shown with the STRIPS representation.


Go to the top level, to &CELL, to PLANE, to the topic index, to the table of contents, or to the full text.

Formatted on 0108-03- at 19:47.