XML handler for VersatileDiskRowLayoutXML. More...

#include <VersatileDiskRowLayoutXML.h>

Inheritance diagram for gear::VersatileDiskRowLayoutXML:

Public Member Functions
virtual TiXmlElement	toXML (const PadRowLayout2D *layout) const
	Creates an XML node for the given PadRowLayout2D.

virtual PadRowLayout2D *	fromXML (const TiXmlElement *xmlElement) const
	Creates the appropriate PadRowLayout2D subclass from the given XML element (node)

Additional Inherited Members
Static Public Member Functions inherited from gear::PadRowLayout2DXML
static PadRowLayout2DXML *	getHandler (const std::string &typeName)
	Get handler for given type.

static PadRowLayout2DXML *	getHandler (const PadRowLayout2D *l)
	Get handler for given type of PadRowLayout2D.

static Map &	map ()
	The map with available xml handler objects (PadRowLayout2DXML)

Detailed Description

XML handler for VersatileDiskRowLayoutXML.

The layout is created row wise, starting from the inner radius, which is the lower edge of the first pad row. The pad geometry is always described by rowHeight and padPitch, which describe the effective pad dimensions. padWidth and padHeight are the dimensions of the metal, without the gaps. They are kept only for backwards compatibility and are irrelevant for the reconstruction.

All values are given im mm. padPitch, offset (and padWidth) are measured in the middle of the pad row. All offsets are measured with respect to phi=0, which is the zero of the local coordinate phi. The pads are arranged in positive phi direction, starting at $\phi = offset / r_i$ (where $ r_i$ is the central radius of row i) for the "right" edge of the first pad (pitch).

The parameters are visualised below. For visualisation purposes the phi=0 line (local coordinate system) has been rotated. In GEAR, this rotation with respect to the horizontal axis is the parameter of the module (not shown in the picture because it is not a parameter of the VersatileDiskRowLayout).

Please note that phiMin coincides with phi=0 in this example because the first row does not have an offset, and the second offset is positive. This is not necessarily the case. phiMin reported by the plain extent is $\min( [ offset_i / r_i ] )$ , phiMax is $\max( [ (offset_i + nPads_i\cdot padPitch_i) / r_i ] )$ . The central angle phiModuleCentre = (phiMax+ phiMin)/2 is only shown for illustration. It is never used or calculated.

Parameters for the layout itself

Parameters

rMin	The radius of the inner edge of the first pad row in mm.

Parameter for the rows

Parameters

nPad	Number of pads in the row
rowHeight	Height of the row in mm
padPitch	Pitch of the pad in mm, measured at the radius at the pad centre
padWidth	(optional) Width of the metal of the pad at the central radius in mm. Has to be < `padPitch`. If not given it is `padPitch`.
padHeight	(optional) Height of the metal of the pad in mm. Has to be < `rowHeight`. If not given it is `rowHeight`.
offset	(optional) Offset in mm with respect to the alignment axis phi=0. Measured at the central radius of the pad.
repeat	(optional) Insert "repeat" identical rows instead of only one.

The XML syntax (numbers not consistent with the drawing, sorry):

<!-- Within the module section -->
<PadRowLayout2D type="VersatileDiskRowLayout" rMin="1439.96">

  <!-- Add the individual rows -->
  <!-- nPad, rowHeight and padPitch are obligatory -->
  <!-- offset (staggering), padWidth, padHeight and repeat are optional -->

  <!-- row 0 -->
  <row nPad="176" padPitch="1.18511" rowHeight="5.36"
   padWidth="1.085106" padHeight="5.26" />

  <!-- rows 1 to 3 -->
  <row nPad="176" padPitch="1.18951" rowHeight="5.36"
   padWidth="1.08951" padHeight="5.26"  offset="0.594754" repeat="3"/>

</PadRowLayout2D>

Author: Martin Killenberg, CERN

Version

Id:: VersatileDiskRowLayoutXML.h 441 2012-11-08 02:30:06Z killenb

Definition at line 73 of file VersatileDiskRowLayoutXML.h.

The documentation for this class was generated from the following files:

Public Member Functions

Additional Inherited Members

Detailed Description