Notation Throughout the TWiki

> vp1

VP1 can also be run directly on an ESD file like this, which loads all hits and tracks directly into geometry:

1. Remotely: In order to run the program remotely, you need to use SSH connection with enabled X11 forwarding and have your X server running. Windows users use this procedure to run VP1: http://www-hep2.fzu.cz/twiki/bin/view/ATLAS/WindowsRelated
2. Locally: The other option is to deploy your local Athena distribution and run from it. It is well suggested, since 3D visualisation is very slow while running remotely.

0.1 Running VP1 on new geometry

0.1 Download and setup of necessary packages

0.1 Colour scheme modification

Virtual Point 1

You need to run the Virtual Point 1 on a ESD file like this:

> vp1 <YOUR ESD.pool.root FILE>

1 Setup

Installation instructions: https://atlas-vp1.web.cern.ch/atlas-vp1/prerequisites.php

Windows users look here: http://www-hep2.fzu.cz/twiki/bin/view/ATLAS/WindowsRelated

Since VP1 is under constant development, you will want to keep your version up to date. The patch script can be found here: https://atlas-vp1.web.cern.ch/atlas-vp1/vp1patches/vp1-install-patch. You can run it from any directory on your AFS assuming you also have put there the patch file from the bottom of this page: https://atlas-vp1.web.cern.ch/atlas-vp1/vp1patches.php

Run the vp1 on new geometry:

> vp1 -detdescr=ATLAS-GEO-00-01-00 -nomuon -nocalo

Run tracking studies

Enter the Geo tab and turn on Pixel in Sub systems

Look into the Display Options and some red circles in the Hide Sectors to see inside the detector

In Actions on visible volumes write to the Vols. with mat box: Air and click Expand a few times.

Watch in awe.

2 Modification

Get this file: https://atlas-vp1.web.cern.ch/atlas-vp1/vp1patches/vp1patch_cvshead_checkoutandbuildall.x and run it:

>
  wget http://atlas-vp1.web.cern.ch/atlas-vp1/vp1patches/vp1patch_cvshead_checkoutandbuildall.x
  chmod +x vp1patch_cvshead_checkoutandbuildall.x
  ./vp1patch_cvshead_checkoutandbuildall.x
>

The change the colouring of pixel modules, modify the contents of /graphics/VP1/VP1Systems/VP1GeometrySystems/src/VisAttributes.cxx file as follows:

{
   SoMaterial *m = new SoMaterial;
   m->diffuseColor.setValue (1, 0, 0);
   m->specularColor.setValue (1, 0, 0);
   m->emissiveColor.setValue (1, 0, 0);
   m->shininess.setValue(.60);
   add("pix::Hybrid",m);
}

Run the vp1:

> vp1 -detdescr=ATLAS-GEO-00-01-00 -nomuon -nocalo

-- MartinZeman - 13 Aug 2008