Detector description language news

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Detector description language news
2
Topics

• News of the geometry
• No more need for default attributes
• Transformations
• Usage
• Composition
• Boolean solids
• Parametrized volumes
• Trapezoids
• News of detector elements
• userParameter and userParameterVector
• Done / To do list

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Default values for attributes

• Null or default values are no more needed inside
  xml
• These are mostly
• 0m for every dimension
• 0degree for every angle
• 360degree for deltaPhiAngle
• 180degree for deltaThetaAngle

lttubs name"..." sizeZ "1m"
innerRadius "0m" outerRadius
"1m" startPhiAngle"0degree"
deltaPhiAngle"360phi"/gt ltposXYZ x"0m"
y"1m" z"0m"/gt
lttubs name"..." sizeZ "1m"
outerRadius "1m"/gt ltposXYZ y"1m"/gt
New Way
Old Way
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Usage of the transformations

• No more inside solids but outside
• Accepted after every solid (even first one in
  booleans)
• Give position first, rotation afterwards.
  rotation is applied first.

ltsubtraction name"L"gt ltbox .../gt ltbox ...gt
ltposXYZ .../gt lt/boxgt lt/subtractiongt
ltsubtraction name"L"gt ltbox .../gt lt!-- I can
put pos and rot here --gt ltbox .../gt ltposXYZ
.../gt lt/subtractiongt
Old Way
New Way
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Composition of transformations

• A new tag lttransformationgt
• No attributes, as many children as you want
• It just applies the transformation in the order
  they are given

lttransformationgt ltpos ...gt ltrot ...gt
lttransformationgt ltpos ...gt ltrot ...gt
ltpos ...gt lt/transformationgt lt/transformationgt
1st
2nd
3rd
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Composition of boolean operations

• Nothing new but a recursive behavior of booleans.

ltsubtraction name"..."gt ltunion name"..."gt
lttubs .../gt lttubs .../gt ltposXYZ
.../gt lt/uniongt ltintersection name"..."gt
lttubs .../gt lttubs .../gt ltposXYZ
.../gt lt/intersectiongt lt/subtractiongt
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Composition of parametrizations

• Nothing new but a recursive behavior of
  parametrization.

ltlogvol ... name"ppv"gt ltparamphysvol
number"4"gt ltphysvol ... logvol".../vol"/gt
ltposXYZ y"1m"/gt ltrotXYZ
rotZ"45degree"/gt lt/paramphysvolgt lt/logvolgt ltl
ogvol ... name"pppv"gt ltparamphysvol
number"3"gt ltphysvol nam...
logvol".../ppv"/gt ltposXYZ/gt ltrotXYZ
rotZ"45degree"/gt lt/paramphysvolgt lt/logvolgt
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2D and 3D parametrizations

• New tags ltparamphysvol2Dgt and ltparamphysvol3Dgt
• Special behavior, different from composition
• All rotations applied first
• Positionning done at the end
• The results are "grids"

ltlogvol ... name"ppv2D"gt ltparamphysvol2D
number1"4"
number2"4"gt ltphysvol ...
logvol".../vol"/gt ltposXYZ y"1m"/gt
ltrotXYZ rotZ"45degree"/gt ltposXYZ
x"1m"/gt ltrotXYZ rotZ"90degree"/gt
lt/paramphysvol2Dgt lt/logvolgt
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Example of 3D parametrization
ltlogvol ... name"ppv3D"gt ltparamphysvol3D
number1"4"
number2"4"
number3"2"gt ltphysvol ...
logvol".../vol"/gt ltposXYZ y"1m"/gt
ltrotXYZ rotZ"45degree"/gt ltposXYZ
x"1m"/gt ltrotXYZ rotZ"90degree"/gt
ltposXYZ x".5m" y".5m"/gt ltrotXYZ
rotZ"180degree"/gt lt/paramphysvol3Dgt lt/logvolgt
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General trapezoids

• New tag lttrapgt with lots of attributes name,
  sizeZ, theta, phi, sizeY1, sizeX1, sizeX2, alp1,
  sizeY2, sizeX3, sizeX4, alp2.
• This is exactly the geant general trapezoid.

lttrap name"trap_sample" sizeZ"12m"
theta"0degree" phi"0degree"
sizeY1"2m" sizeX1"2m"
sizeX2"4m" alp1"0degree"
sizeY2"4m" sizeX3"4m"
sizeX4"8m" alp2"0degree"/gt
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userParameter / userParameterVector

• Two new tags ltuserParametergt and
  ltuserParameterVectorgt
• Attributes are name, type and comment. All these
  are strings.
• The value is given directly between opening and
  closing tags.
• It is accessible in regular interface
  IdetectorElement via methods userParameterType,
  userParameterComment, userParameterValue,
  userParameter (see next talk)

ltuserParameterVector name"Al_plate_thickn
ess" type"double"
comment"blabla"gt 1.222m 1.333m 1.444m
1.555m lt/userParameterVectorgt
ltuserParameter name"Al_plate_thickness"
type"double" comment"blabla"gt
1.2222mm lt/userParametergt
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To be done / discussed

• Concerning geometry
• Test general trapezoids
• Discuss the memory problem for parametrized
  physical volumes
• Be able to reload xml in GaudiLab (most of the
  work in DetDesc)
• Usage of a transformation for the first solid in
  a boolean
• Compile and test everything under windows
• Problems with GaudiLab (stability, boolean
  operations, ...)
• Concerning structure
• Discuss the scope of the ltparametergt tag
• Improve the ltuserParam(Vector)gt tag