= Delphes =

== A framework for fast simulation of a generic collider experiment ==

Delphes is a C++ framework, performing a fast multipurpose detector response simulation. The simulation includes a tracking system, embedded into a magnetic field, calorimeters and a muon system. The framework is interfaced to standard file formats (e.g. Les Houches Event File or HepMC) and outputs observables such as isolated leptons, missing transverse energy and collection of jets which can be used for dedicated analyses. The simulation of the detector response takes into account the effect of magnetic field, the granularity of the calorimeters and subdetector resolutions. Visualisation of the final state particles is also built-in using the corresponding ROOT library.

[TheTeam The Delphes team]

=== **NEW** Delphes 3 **stable release** (February 26) ===

Following the guidelines and suggestions of the 2012 [http://indico.cern.ch/materialDisplay.py?materialId=minutes&confId=187127 LPCC workshop on public fast simulators for the LHC], Delphes has been completely redesigned to meet the needs of all users.

Improvements include:
  - Modular structure allowing users to introduce new features easily and modify existing ones
  - Library mode to use Delphes inside other programs
  - Simulation speed has been improved
  - Input libraries have been rewritten from scratch to handle standard formats, files stored on castor or on the web
  - Many existing features have been updated
  - Important number of bug fixes

The modular system allows you to:
  - define your own output collections, store multiple object collections (different jet algorithms, etc.)
  - define the isolation criteria for each type of object 
  - define efficiency and resolution formulas for all objects
  - change the b-tagging and tau-tagging efficiency and misidentification rate
  - and much more! Be sure to read the [WorkBook online documentation]


Production version 3.0.4:
  * added modules for pile-up injection and subtraction (WorkBook/PileUp)
  * increased particle counter capacity in the Calorimeter module (ticket #162)
  * modified HepMC reader to accept out of range floating point values in the HepMC files (ticket #155)

Download here: [http://cp3.irmp.ucl.ac.be/downloads/Delphes-3.0.4.tar.gz Delphes 3.0.4]

Documentation: [WorkBook Delphes 3 user guide]

=== Community and support ===

Delphes is now moving to community-based development. The '''branches''' of the subversion repository are open to users who would like to participate. If you are interested, [https://cp3.irmp.ucl.ac.be/projects/delphes/register register] first and then contact the support team via cp3-delphes@uclouvain.be to be granted write access to the subversion repository.  

=== SVN access ===

You can get the latest version of the code using:

{{{
svn checkout https://cp3.irmp.ucl.ac.be/sources/delphes/trunk
}}}

Registered developers can checkout and commit in branches using their credentials:

{{{
svn checkout --username=my_user_name https://cp3.irmp.ucl.ac.be/sources/delphes/branches/my_branch
}}}

== Latest tickets ==
[[TicketQuery(max=10,order=time,desc=1,format=table,col=resolution|summary|owner|reporter|status|priority|time,type!=spam)]]
[report:9 More tickets]
{{{#!comment
== Active tickets ==
[[TicketQuery(order=priority,format=table,col=resolution|summary|owner|reporter|status|priority|time,status!=closed,type!=archive)]]
[report:1 Active tickets]
}}}


=== Production version Delphes 2 (deprecated) ===

Production version 2.0.5:
  * new tar.gz file name format

Download here: [http://cp3.irmp.ucl.ac.be/downloads/Delphes-2.0.5.tar.gz Delphes 2.0.5]

Previous version 2.0.4:
  * fixes compilation on MacOSX

Download here: [http://cp3.irmp.ucl.ac.be/downloads/Delphes_V_2.0.4.tar.gz Delphes 2.0.4]

Previous version 2.0.3:
  * b-tagging now based on b-quark content (thanks to A.Mertens)
  * track isolation bugfix (Ticket #61, thanks to Sourav Mandal)
  * Compatible with HepMC 2.05 and 2.06
  * Solved: some tracks were ignored in the computation of ptiso (thanks to Sourav Mandal)
  * Solved: Memory leak preventing to load many events using HepMC (thanks to Sourav Mandal)
  * Solved bug in root genparticles branches when reading HepMC files (thanks to Nadja Strobbe)
  * Solved bug in b-tagging (thanks to Alexandre Mertens)
  * Solved bug in !Examples/Analysis_Ex.cpp (thanks to hashemi.mj)
  * Solved bug in !ExRootAnalysis (thanks to Pavel Demin and lessa.a.p)
  * Includes Frog 3.0 (You should never need a FROG-free version anymore)

Download here: [https://cp3.irmp.ucl.ac.be/projects/delphes/raw-attachment/wiki/WikiStart/Delphes_V_2.0.3.tar.gz Delphes 2.0.3]

The previous stable version is here: [https://cp3.irmp.ucl.ac.be/projects/delphes/raw-attachment/wiki/WikiStart/Delphes_V_1.9.tar.gz Delphes 1.9] 


=== Delphes 2 Documentation ===
   * [ReleaseNotes Release notes]
   * [UserManual User manual]


=== Development Area (authenticated users only) ===
   * [DevelopmentArea Development]