manTree Root Trees & Analysis Framework

Important: For 2012 analysis with D3PDs see SFrameD3PD.

Introduction

The manTree package contains a set of classes for storing physics objects for final analysis. It can be used outside of athena, for example in SFrame. The code is in svn and the html descriptions of the classes can be found here. This page covers the release 17 version of the code, for release 16 please see ManTreeRel16. The recommended way to compile the package is to follow the instructions below.

Analysis Framework

In order to do a complete analysis, there are a set of packages provided by ATLAS for applying common prescriptions. These packages are made available through the TopRootCore package and we interface to these packages using the topUtils package.

First Time Setup

The following instructions should be followed to setup up & compile sframe, manTree and the common analysis packages:

Commands to be entered into the terminal start with '>'

Export CERN_USER variable:
> export CERN_USER=yourcernlxplususername

Setup root core (note this also sets up root v5.28.00):
> source /nfs/software/AtlasSoftware/RootCore/Root_v528_Rel17_ICHEP12/RootCore/scripts/setup.sh

Export SVNMAN variable:
> export SVNMAN=svn+ssh://$CERN_USER@svn.cern.ch/reps/atlasinst/Institutes/Manchester

Go to a directory where you want to work from:
> cd somedir

Check out sframe:
> svn co https://sframe.svn.sourceforge.net/svnroot/sframe/SFrame/tags/SFrame-03-04-23 SFrameArea
> cd SFrameArea

Patch sframe:
> patch core/include/SCycleBaseNTuple.icc /afs/hep.man.ac.uk/g/atlas/SFramePatches/16June11/SCycleBaseNTuple.icc.patch

Build sframe:
> source ./setup.sh
> make

Check out manTree packages:
> svn co $SVNMAN/SFrame/manTree/trunk manTree
> svn co $SVNMAN/SFrame/SFToolInterfaces/tags/SFToolInterfaces-00-00-01 SFToolInterfaces
> svn co $SVNMAN/SFrame/manTreeSFrameBase/trunk manTreeSFrameBase
> svn co $SVNMAN/SFrame/topUtils/branches/topUtils-01-02-06-branch topUtils
> svn co $SVNMAN/SFrame/exampleManTreeCycle/trunk exampleManTreeCycle

Build manTree packages:
> cd manTree
> make
> cd ../manTreeSFrameBase
> make
> cd ../topUtils
> make
> cd ../exampleManTreeCycle
> make

Make a soft link to the RootCore par file (needed for proof running):
cd $SFRAME_LIB_PATH
ln -s $ROOTCOREDIR/../RootCore.par .

Setup for Each Session

Each time you start a new terminal and want to work on the analysis you need to do the following steps:

Go to your sframe directory:
> cd pathto/SFrameArea

Export CERN_USER variable:
> export CERN_USER=yourcernlxplususername

Setup root core (also sets up root v5.28):
> source /nfs/software/AtlasSoftware/RootCore/Root_v528_Rel17_ICHEP12/RootCore/scripts/setup.sh

setup sframe:
> source ./setup.sh

Running the Example Cycle

There is an example sframe cycle in exampleManTreeCycle. It can be run with the following (don't forget the setup commands):

> cd $SFRAME_DIR
> cd exampleManTreeCycle
> sframe_main config/TestCycle_config.xml

Making manTrees

Instructions for making manTrees are at ManTreeMaking.

manTree Samples

A list of currently available samples can be found at ManTreeSamples.

-- MarkOwen - 16-Sep-2011