Analytic Scene

Looking uptree from lvPmtHemi see many nodes without geometry and just physvol/logvol striping, does this need a separate “placement” tree ? Prepping for OptiX/OpenGL instancing ?

• TODO: expand ddbase.py to handle this

Checking users of lvPmtHemi AdPmts/geometry.xml uses paramphysvol to instance it around the rings etc..:

simon:pmt blyth$ pmt-dfind lvPmtHemi

./AdPmts/geometry.xml:  <physvol name="pvAdPmtUnit" logvol="/dd/Geometry/PMT/lvPmtHemiwPmtHolder">


simon:DDDB blyth$ pmt-dfind lvPmtHemiwPmtHolder
./AdPmts/geometry.xml:  <physvol name="pvAdPmtUnit" logvol="/dd/Geometry/PMT/lvPmtHemiwPmtHolder">
./PMT/geometry.xml:    <logvolref href="hemi-pmt.xml#lvPmtHemiwPmtHolder"/>
./PMT/hemi-pmt.xml:  <logvol name="lvPmtHemiwPmtHolder">
simon:DDDB blyth$

AdPmts/geometry.xml:

33   <logvol name="lvAdPmtRing">
34     <paramphysvol number="AdPmtNperRing">
35       <physvol name="pvAdPmtInRing:1" logvol="/dd/Geometry/AdPmts/lvAdPmtUnit" />
36       <posXYZ/>
37       <rotXYZ rotZ="AdPmtAngularSep" />
38     </paramphysvol>
39   </logvol>
40
41   <logvol name="lvAdPmtArrayZero">
42     <paramphysvol number="AdPmtNrings">
43       <physvol name="pvAdPmtRingInCyl:1" logvol="/dd/Geometry/AdPmts/lvAdPmtRing"/>
44       <posXYZ z="AdPmtZsep"/>
45     </paramphysvol>
46   </logvol>

Detdesc generation

Detdesc generation complicates things greatly... Take a look at GDML

/usr/local/env/dyb/NuWa-trunk/dybgaudi/Detector/XmlDetDesc/python/XmlDetDescGen

Multi File Detdesc Parsing with ddbase.py ?

• https://wiki.bnl.gov/dayabay/index.php?title=Tutorial:DetDesc/XML_Files

Detdesc using catalog to handle cross-file ? Always ?

simon:PMT blyth$ pmt-dfind hemi-pmt.xml
./PMT/geometry.xml:    <logvolref href="hemi-pmt.xml#lvPmtHemiFrame"/>
./PMT/geometry.xml:    <logvolref href="hemi-pmt.xml#lvPmtHemi"/>
./PMT/geometry.xml:    <logvolref href="hemi-pmt.xml#lvPmtHemiwPmtHolder"/>
./PMT/geometry.xml:    <logvolref href="hemi-pmt.xml#lvAdPmtCollar"/>
...

 06 <DDDB>
  7
  8   <catalog name="PMT">
  9
 10     <logvolref href="hemi-pmt.xml#lvPmtHemiFrame"/>
 11     <logvolref href="hemi-pmt.xml#lvPmtHemi"/>
 12     <logvolref href="hemi-pmt.xml#lvPmtHemiwPmtHolder"/>
 13     <logvolref href="hemi-pmt.xml#lvAdPmtCollar"/>
 14     <logvolref href="hemi-pmt.xml#lvPmtHemiCathode"/>
 15     <logvolref href="hemi-pmt.xml#lvPmtHemiVacuum"/>
 16     <logvolref href="hemi-pmt.xml#lvPmtHemiBottom"/>