The GAUSS Project

First version of Sim10

This version is to be used for PP and Ph WG validation and commissioning of productions

It automatically picks up a new major version of DecFiles v30r* with a new general decay table.
Based on LHCb v44r2p1 and Gaudi v29r4.
Uses HepMC 2.06.09, Pythia8 235, Pythia6.427.2
Based on the v104r2 build of Geant4 10.4.p02 (see this page).

• Jira issues
• GitLab release notes

Third version for Sim10 tests and verifications.

This version uses the latest available version of Geant4 10.4.p02

It automatically picks up a new major version of DecFiles v30r* with a new general decay table.
Based on LHCb v44r2p1 and Gaudi v29r4.
Uses HepMC 2.06.09, Pythia8 235, Pythia6.427.2
Based on the v100r2 build of Geant4 10.4.p02 (see this page).

• Jira issues
• GitLab release notes

Second version for Sim10 tests and verifications.

This version uses the latest available version of Pythia8 235 and Geant4 10.4.p01

It automatically picks up a new major version of DecFiles v30r* with a new general decay table.
Based on LHCb v44r2p1 and Gaudi v29r4.
Uses HepMC 2.06.09, Pythia8 235, Pythia6.427.2
Based on the v104r1p1 build of Geant4 10.4.p01 (see this page).

• Jira issues
• GitLab release notes

First version for Sim10 tests and verifications. This version has the same the functionalities of v51r0.

In addition it has Generators FSR implemented for Pythia8 to replace statistics counters and uses the latest available version of Pythia8 230

It automatically picks up a new major version of DecFiles v30r* with a new general decay table.
Based on LHCb v42r6p2 and Gaudi v28r2.
Uses HepMC 2.06.09, Pythia8 230, Pythia6.427.2
Based on the v96r4p7 build of Geant4 9.6.p04 (latest patch, see this page).

• Jira issues
• GitLab release notes

Sim09-Up02 release: to be used for upgrade and validation of potentially incompatible developments for validation before deployment in production

Build against: LHCb v42r6p2 and Gaudi v28r2
Uses HepMC 2.06.09, Pythia8 186, Pythia6.427.2
and the v96r4p7 build of Geant4 9.6.p04

• Jira issues
• GitLab release notes

Sim09-Up02 release: to be used for upgrade and validation of potentially incompatible developments for validation before deployment in production

Build against: LHCb v42r6p2 and Gaudi v28r2
Uses HepMC 2.06.09, Pythia8 186, Pythia6.427.2
and the v96r4p7 build of Geant4 9.6.p04

• Jira issues
• GitLab release notes

Sim09-Up02 release: to be used for upgrade and validation of potentially incompatible developments for validation before deployment in production

Build against: LHCb v42r6p2 and Gaudi v28r2
Uses HepMC 2.06.09, Pythia8 186, Pythia6.427.2
and the v96r4p7 build of Geant4 9.6.p04

• Jira issues
• GitLab release notes

Sim09-upgrade release: to be used for upgrade and validation of potentially incompatible developments for validation before deployment in production

It automatically picks up a new major version of DecFiles v29r* with a new general decay table.
Build against: LHCb v40r1 and Gaudi v27r1 with Root 6.06.02
Uses HepMC 2.06.09, Pythia8 186, Pythia6.427.2
and the v96r4p4 build of Geant4 9.6.p04

• Jira issues

Sim09d production release

This release introduces two new generator for CEP in pp and HI, StarLight and SupreChi2. Some bug fixes and enhancemnt in the generators (pythia8, evtgen and generator cuts) will affect some event types and produce results different from v49r9: for this reason it is changed to Sim09d

Built against: LHCb v39r1p1 and Gaudi v26r4
Uses HepMC 2.06.09, Pythia8 186, Pythia6.427.2
and the v96r4p3 build of Geant4 9.6.p04

• Jira issues
• GitLab release notes

Sim09c production release

This release introduces some new features in the generators with respect to v49r8. A change in EvtGen will affect only one event type that has been made obsolete, so Sim09c is kept.

Built against: LHCb v39r1 and Gaudi v26r4
Uses HepMC 2.06.09, Pythia8 186, Pythia6.427.2
and the v96r4p3 build of Geant4 9.6.p04

• Jira issues
• GitLab release notes

First Sim09c production release

This release introduces some new features in the generators with respect to v49r7 of which some will give non identical results. Hence the change to Sim09c.

This release requires a new major version of DecFiles, v30r*.
It also requires the use of new DDDB tags compatible with the new DECAY.dec supporting light baryons.

Built against: LHCb v39r1 and Gaudi v26r4
Uses HepMC 2.06.09, Pythia8 186, Pythia6.427.2
and the v96r4p3 build of Geant4 9.6.p04

• Jira issues
• GitLab release notes

Sim09b production release

This release introduced some new features in the generators with respect to v49r6, including for Ions. It also introduces the new ReDecay option for fast simulation.

It automatically picks up a new major version of DecFiles v29r*.
Build against: LHCb v39r1 and Gaudi v26r4
Uses HepMC 2.06.09, Pythia8 186, Pythia6.427.2
and the v96r4p3 build of Geant4 9.6.p04

• Jira issues
• GitLab release notes

Sim09b production release

This release introduced some new features in the generators with respect to v49r5

It automatically picks up a new major version of DecFiles v29r* with a new general decay table.
Build against: LHCb v39r1 and Gaudi v26r4
Uses HepMC 2.06.09, Pythia8 186, Pythia6.427.2
and the v96r4p3 build of Geant4 9.6.p04

• Jira issues
• GitLab release notes

First Sim09b production release

This release produced incompatible results in some cases with respect to earlier Gauss v49 versions

It automatically picks up a new major version of DecFiles v29r* with a new general decay table.
Build against: LHCb v39r1 and Gaudi v26r4
Uses HepMC 2.06.09, Pythia8 186, Pythia6.427.2
and the v96r4p3 build of Geant4 9.6.p04

• Jira issues
• GitLab release notes

Last Sim09a production release

It automatically picks up a new major version of DecFiles v29r* with a new general decay table.
Build against: LHCb v39r1 and Gaudi v26r4
Uses HepMC 2.06.09, Pythia8 186, Pythia6.427.2
and the v96r4p3 build of Geant4 9.6.p04

• Jira issues

Sim09a production release

It automatically picks up a new major version of DecFiles v29r* with a new general decay table.
Build against: LHCb v39r1 and Gaudi v26r4
Uses HepMC 2.06.09, Pythia8 186, Pythia6.427.2
and the v96r4p3 build of Geant4 9.6.p04

• Jira issues

Sim09a production release

It automatically picks up a new major version of DecFiles v29r* with a new general decay table.
Build against: LHCb v39r1 and Gaudi v26r4
Uses HepMC 2.06.09, Pythia8 186, Pythia6.427.2
and the v96r4p3 build of Geant4 9.6.p04

• Jira issues

First Sim09a production release

It automatically picks up a new major version of DecFiles v29r* with a new general decay table.
Based on LHCb v39r1 and Gaudi v26r4.
Uses HepMC 2.06.09, Pythia8 186, Pythia6.427.2
Based on the v96r4p3 build of Geant4 9.6.p04 (latest patch, see this page).

Last version for Sim09 validation tests by PhWG. Pythia6 in production reverted to 427.2

It automatically picks up a new major version of DecFiles v28r* with a new general decay table.
Based on LHCb v39r1 and Gaudi v26r4.
Uses HepMC 2.06.09, Pythia8 186, Pythia6.427.2
Based on the v96r4p3 build of Geant4 9.6.p04 (latest patch, see this page).

For Sim09 validation tests by PhWG. Really uses new kaon cross sections. Problem with Pythia6 in production. Will revert to 427.2

It automatically picks up a new major version of DecFiles v28r* with a new general decay table.
Based on LHCb v38r7 and Gaudi v26r2.
Uses HepMC 2.06.09, Pythia8 186, Pythia6.428.2
Based on the v96r4p2 build of Geant4 9.6.p04 (latest patch, see this page).

Development version to prepare Sim09. To verify new tuning for Pythia8 and uses new kaon cross sections.

It automatically picks up the newest DecFiles v27r*.
Based on LHCb v38r6 and Gaudi v26r1.
Uses HepMC 2.06.09, Pythia8 186, Pythia6.428.2
Based on the v96r4p1 build of Geant4 9.6.p04 (latest patch, see this page).

Development version to prepare Sim09. This version is identical to v48r1 but uses ROOT6

It automatically picks up the newest DecFiles v27r*.
Based on LHCb v38r3p1 and Gaudi v25r6p1.
Uses HepMC 2.06.09, Pythia8 186, Pythia6.428.2
Based on the v96r4p0g1 build of Geant4 9.6.p04 (latest patch, see this page).

Development version to prepare Sim09. To test new version of Geant4 9.6.p04

It automatically picks up the newest DecFiles v27r*.
Based on LHCb v38r3 and Gaudi v25r6.
Uses HepMC 2.06.09, Pythia8 186, Pythia6.428.2
Based on the v96r4 build of Geant4 9.6.p04 (latest patch, see this page).

Development version to prepare Sim09.This version replaces v48r0.

Fixes issues of signal decays, due to a bug in the initialization of Pythia8. It automatically picks up the newest DecFiles v27r*.
Based on LHCb v37r3 and Gaudi v25r2.
Uses HepMC 2.06.08, Pythia8 186, Pythia6.428.2
Based on the v95r2p7g2 build of Geant4 9.5.p02 (latest patch, see this page).

Development version to prepare Sim09.This version has a bug for signal event types. Use v48r0p1 instead.

New version of generators libraries It automatically picks up the newest DecFiles v27r*.
Based on LHCb v37r3 and Gaudi v25r2.
Uses HepMC 2.06.08, Pythia8 186, Pythia6.428.2
Based on the v95r2p7g2 build of Geant4 9.5.p02 (latest patch, see this page).

Production version for Upgrade and 2015 Early Measurements

It automatically picks up the newest DecFiles v27r*.
Based on LHCb v37r3 and Gaudi v25r2.
Uses HepMC 2.06.08, Pythia8 175, Pythia6.427.2
Based on the v95r2p7g2 build of Geant4 9.5.p02 (latest patch, see this page).

Production version for Upgrade and preparation of Run2

It automatically picks up the newest DecFiles v27r*.
Based on LHCb v37r3 and Gaudi v25r2.
Uses HepMC 2.06.08, Pythia8 175, Pythia6.427.2
Based on the v95r2p7g2 build of Geant4 9.5.p02 (latest patch, see this page).

Production version for Upgrade and preparation of Run2

It automatically picks up the newest DecFiles v27r*.
Based on LHCb v37r3 and Gaudi v25r2.
Uses HepMC 2.06.08, Pythia8 175, Pythia6.427.2
Based on the v95r2p7g2 build of Geant4 9.5.p02 (latest patch, see this page).

Production version for Upgrade and preparation of Run2

It automatically picks up the newest DecFiles v27r*.
Based on LHCb v37r3 and Gaudi v25r2.
Uses HepMC 2.06.08, Pythia8 175, Pythia6.427.2
Based on the v95r2p7g2 build of Geant4 9.5.p02 (latest patch, see this page).

Production version for Upgrade and preparation of Run2

It automatically picks up the newest DecFiles v27r*.
Based on LHCb v37r3 and Gaudi v25r2.
Uses HepMC 2.06.08, Pythia8 175, Pythia6.427.2
Based on the v95r2p7g2 build of Geant4 9.5.p02 (latest patch, see this page).

Production version for Upgrade and preparation of Run2

It automatically picks up the newest DecFiles v27r*.
Based on LHCb v36r4 and Gaudi v24r2.
Uses HepMC 2.06.08, Pythia8 175, Pythia6.427.2
Based on the v95r2p7g1 build of Geant4 9.5.p02 (latest patch, see this page).

Production version for Upgrade and preparation of Run2

It automatically picks up the newest DecFiles v27r*.
Based on LHCb v36r4 and Gaudi v24r2.
Uses HepMC 2.06.08, Pythia8 175, Pythia6.427.2
Based on the v95r2p7g1 build of Geant4 9.5.p02 (latest patch, see this page).

Production version for Upgrade and preparation of Run2

It automatically picks up the newest DecFiles v27r*.
Based on LHCb v36r4 and Gaudi v24r2.
Uses HepMC 2.06.08, Pythia8 175, Pythia6.427.2
Based on the v95r2p7g1 build of Geant4 9.5.p02 (latest patch, see this page).

Production version for Upgrade and preparation of Run2

It automatically picks up the newest DecFiles v27r*.
Based on LHCb v36r4 and Gaudi v24r2.
Uses HepMC 2.06.08, Pythia8 175, Pythia6.427.2
Based on the v95r2p7g1 build of Geant4 9.5.p02 (latest patch, see this page).

Production version for Upgrade and preparation of Run2

It automatically picks up the newest DecFiles v27r*.
Based on LHCb v36r4 and Gaudi v24r2.
Uses HepMC 2.06.08, Pythia8 175, Pythia6.427.2
Based on the v95r2p7g1 build of Geant4 9.5.p02 (latest patch, see this page).

Production version for Upgrade and preparation of Run2

It automatically picks up the newest DecFiles v27r*.
Based on LHCb v36r4 and Gaudi v24r2.
Uses HepMC 2.06.08, Pythia8 175, Pythia6.427.2
Based on the v95r2p7g1 build of Geant4 9.5.p02 (latest patch, see this page).

Production version for Upgrade and preparation of Run2

It automatically picks up the newest DecFiles v27r*.
Based on LHCb v36r4 and Gaudi v24r2.
Uses HepMC 2.06.08, Pythia8 175, Pythia6.427.2
Based on the v95r2p7g1 build of Geant4 9.5.p02 (latest patch, see this page).

Production version for Upgrade and preparation of Run2

It automatically picks up the newest DecFiles v27r*.
Based on LHCb v36r4 and Gaudi v24r2.
Uses HepMC 2.06.08, Pythia8 175, Pythia6.427.2
Based on the v95r2p7g1 build of Geant4 9.5.p02 (latest patch, see this page).

Production version for Upgrade and preparation of Run2

It automatically picks up the newest DecFiles v27r*.
Based on LHCb v36r4 and Gaudi v24r2.
Uses HepMC 2.06.08, Pythia8 175, Pythia6.427.2
Based on the v95r2p7g1 build of Geant4 9.5.p02 (latest patch, see this page).

Production version for Upgrade and preparation of Run2

It automatically picks up the newest DecFiles v27r*.
Based on LHCb v36r4 and Gaudi v24r2.
Uses HepMC 2.06.08, Pythia8 175, Pythia6.427.2
Based on the v95r2p7g1 build of Geant4 9.5.p02 (latest patch, see this page).

Sim08i - Production version for analysis with Run1 data

The reason to change to Sim08i is reverting many of the changes below imply a different behaviour with respect to some of the already produce samples. The main changes are: - revert back to the Ranlux random engine as some reproducibility issues had been observed with Twist, - new models and bug fixes in EvtGen, EvtGenExtras and Mint - new generator level cuts - new sampling for particle gun (for CEP)

It automatically picks up the newest DecFiles v27r*.
Based on LHCb v35r4 and Gaudi v23r6.
Uses HepMC 2.06.05, Pythia8 175, Pythia6.427.2
Based on the v95r2p7 build of Geant4 9.5.p02 (latest patch, see this page).

Sim08h - Production version for analysis with Run1 data

The reason to change to Sim08h is introducing a new random number engine (as Gauss v45r10), it fixes some issues for AlpGen in production.

It automatically picks up the newest DecFiles v27r*.
Based on LHCb v35r4 and Gaudi v23r6.
Uses HepMC 2.06.05, Pythia8 175, Pythia6.427.2
Based on the v95r2p7 build of Geant4 9.5.p02 (latest patch, see this page).

Sim08h - Production version for analysis with Run1 data

The reason to change to Sim08h is introducing a new random number engine (as Gauss v45r10).

It automatically picks up the newest DecFiles v27r*.
Based on LHCb v35r4 and Gaudi v23r6.
Uses HepMC 2.06.05, Pythia8 175, Pythia6.427.2
Based on the v95r2p7 build of Geant4 9.5.p02 (latest patch, see this page).

Sim08g - Production version for analysis with Run1 data

Fixes a bug in particle gun preventing production of signal pguns

It automatically picks up the newest DecFiles v27r*.
Based on LHCb v35r4 and Gaudi v23r6.
Uses HepMC 2.06.05, Pythia8 175, Pythia6.427.2
Based on the v95r2p7 build of Geant4 9.5.p02 (latest patch, see this page).

Sim08g - Production version for analysis with Run1 data

Allows to use signale particle guns in production
New model and other updates in EvtGen and EvtGenExtras and in Mint
Support of 13 TeV collisions in BcVegPy
New generator level cuts

It automatically picks up the newest DecFiles v27r*.
Based on LHCb v35r4 and Gaudi v23r6.
Uses HepMC 2.06.05, Pythia8 175, Pythia6.427.2
Based on the v95r2p7 build of Geant4 9.5.p02 (latest patch, see this page).

Sim08f - Production version for analysis with Run1 data

The reason to change to Sim08f is the introduction of the user hook and pt dumping in Pythia8

It automatically picks up the newest DecFiles v27r*.
Based on LHCb v35r4 and Gaudi v23r6.
Uses HepMC 2.06.05, Pythia8 175, Pythia6.427.2
Based on the v95r2p7 build of Geant4 9.5.p02 (latest patch, see this page).

Sim08e - Production version for analysis with Run1 data

The reason to change to Sim08e are some changes in a model in EvtGen

It automatically picks up the newest DecFiles v27r*.
Based on LHCb v35r4 and Gaudi v23r6.
Uses HepMC 2.06.05, Pythia8 175, Pythia6.427.2
Based on the v95r2p7 build of Geant4 9.5.p02 (latest patch, see this page).

Sim08d - Production version for analysis with Run1 data

The reason to change to Sim08d is a fix in a model in EvtGenExtras

It automatically picks up the newest DecFiles v27r*.
Based on LHCb v35r4 and Gaudi v23r6.
Uses HepMC 2.06.05, Pythia8 175, Pythia6.427.2
Based on the v95r2p7 build of Geant4 9.5.p02 (latest patch, see this page).

Sim08c - Production version for analysis with 2011 and 2012 data

Allows to use powheg in production
New model and other updates in EvtGen and EvtGenExtras and in Mint
New information in xml generator summary
Fix problem in production for BcVegPy when opening files
New momentum spectrum tool (see Simulation Meeting of 2013-09-24)
New generator level cuts

It automatically picks up the newest DecFiles v27r*.
Based on LHCb v35r4 and Gaudi v23r6.
Uses HepMC 2.06.05, Pythia8 175, Pythia6.427.2
Based on the v95r2p5 build of Geant4 9.5.p02 (latest patch, see this page).

Sim08b - Production version for analysis with 2011 and 2012 data

It automatically picks up the newest DecFiles v27r*.
Based on LHCb v35r4 and Gaudi v23r6.
Uses HepMC 2.06.05, Pythia8 175, Pythia6.427.2
Based on the v95r2p5 build of Geant4 9.5.p02 (latest patch, see this page).

Sim08a - Production version for analysis with 2011 and 2012 data

It automatically picks up the newest DecFiles v27r*.
Based on LHCb v35r4 and Gaudi v23r6.
Uses HepMC 2.06.05, Pythia8 175, Pythia6.427.2
Based on the v95r2p5 build of Geant4 9.5.p02 (latest patch, see this page).

Sim08 and Sim08a - Production version for analysis with 2011 and 2012 data

It automatically picks up the newest DecFiles v27r*.
Based on LHCb v35r4 and Gaudi v23r6.
Uses HepMC 2.06.05, Pythia8 175, Pythia6.427.2
Based on the v95r2p5 build of Geant4 9.5.p02 (latest patch, see this page).

Sim08 - Production version for analysis with 2011 and 2012 data

It automatically picks up the newest DecFiles v27r*.
Based on LHCb v35r4 and Gaudi v23r6.
Uses HepMC 2.06.05, Pythia8 175, Pythia6.427.2
Based on the v95r2p5 build of Geant4 9.5.p02 (latest patch, see this page).

Development version for productions for 2011 and 2012 data in 2013. New version of EvtGen and Geant4 combined for final tests.

Development version for productions for 2011 and 2012 data in 2013.

Development version for productions for 2011 and 2012 data in 2013. New version of EvtGen.

Development version for productions for 2011 and 2012 data in 2013. New version of EvtGen.

Photos has been replaced with Photos++ Needed by EvtGen and use of both not possible.

Topic: detail

It automatically picks up the new DecFiles v26r*. Needs DecFiles v26 series

Based on LHCb v35r3 and Gaudi v23r5.

Uses HepMC 2.06.05, Pythia 6.426.2, Uses Pythia8 170.

Based on the v94r2p6 build of Geant4 9.4.p02 (latest patch, see this page).

Development version for productions for 2011 and 2012 data in 2013. New version of Geant4.

Development version for productions for 2011 and 2012 data in 2013. New version of Geant4 9.5.

Identical to Gauss v42r3 but for changes in generators versions and changes needed for G4 9.5 Needed by EvtGen and use of both not possible.

Topic: detail

It automatically picks up the new DecFiles v26r*. Needs DecFiles v26 series

Based on LHCb v35r3 and Gaudi v23r5.

Uses HepMC 2.06.05, Pythia 6.426.2, Uses Pythia8 170.

Based on the v95r2 build of Geant4 9.5.p02 (latest patch, see this page).

Sim06b - Version for productions for 2012 early analysis.

MC production version for 2012 May-June and July-to-Sept data and for Upgrade studies.

Introduce the use

Topic: detail

It automatically picks up the new DecFiles v26r*. Needs DecFiles v26 series

Based on LHCb v35r3 and Gaudi v23r5.

Uses HepMC 2.06.05, Pythia 6.425.2, Photos 2.15.4 and LHAPDF 5.8.5. Uses Pythia8 170.

Based on the v94r2p6 build of Geant4 9.4.p02 (latest patch, see this page).

MC production version for 2012 May-June data. First version to support Upgrade detectors Simulation.

Use of some private version of LCG_GeneratorsInterface

This allow new one to be defined, e.g. herwigpp needed for bash, or to fix others, e.g. rivet, before deployement in LCG. Bug fixes:

Fix for LoKi generator level cuts GMASS It automatically picks up the new DecFiles v26r*. Needs DecFiles v26 series

Based on LHCb v35r2 and Gaudi v23r4.

Uses HepMC 2.06.05, Pythia 6.425.2, LHAPDF 5.8.5 and Photos 2.15.4.

Uses Pythia8 170.

Based on the v94r2p5 build of Geant4 9.4.p02 (latest patch, see this page).

MC production version for 2012 May-June data. Production with this new version of Gauss will be labelled 'Sim06a' since there is known different behavior for some event types and possible different behavior for others.

New models in EvtGen: added D0->pi+pi-pi0 decay model to EvtDDalitz, added new decay EvtBcVMuNu and EvtTVP models/classes bug fix for the EvtD0gammaDalitz model.

New models and bug fix in EvtGenExtras: added a new decay Bs -> f0(980) Mu Mu in the BTOSLLMS and BTOSLLMSEXT, fixed memory allocation problems in BTOSLLMS model (MAY AFFECT EVENT TYPES), added new model for Bq -> 4 leptons decay (BQTOLLLLHYPERCP), added flat sq Dalitz model for 3body decays.

New generators level cuts: added DaughtersInLHCbAndCutsForDACP cut tool modified DiLeptonInAcceptance.cpp to allow for cut on DOCA of leptons and cut on product of leptons' pT, added DaughtersInLHCbAndWithDaughAndBCuts

Bug fix and modification in Generators fix bug that provoked crash for flat smearing of primary vertices as needed by beam gas, updated EvtGenInPhSpDecay to allow configurable parameter file name

Many packages have been modified to to use LHCb::ParticlePropertySvc.

Modification to allow use on GDML, that will be commissioned in next Gauss v42r2.

Removal of LbHerwig, the adapter to Herwig (FORTRAN) no longer maintened and being replaced by Herwig++.

Temporarily switch off LbHerwigpp, the adapted to Herwig++. It will be reactivated in v42r2, to ue fix in LCG_GeneratorsInterfaces, that will allow to run it on bash.

Introduce possibility of performing TORCH test beam simulation. Changes in Gauss itself: modified example options for Gauss-MC11.py to remove spill-over, dynamic creation of QMTests for new event types in DecFiles, example for Gauss-Upgrade.py using the upgrade database (it requires some additional tweeking, contact Paul and Sajan).

It automatically picks up the new DecFiles v25r*. DecFiles v25r12 neeeded to generate events with the new features introduced.

Based on LHCb v35r0 and Gaudi v23r3.

Uses HepMC 2.06.05, Pythia 6.425.2, Photos 2.15.4 and LHAPDF 5.8.5. Uses Pythia8 165.

Based on the v94r2p4 build of Geant4 9.4.p02 (latest patch, see this page).

MC production version for early 2012 data (ICHEP). Production with this version of Gauss are labelled 'Sim06'. The production will be carried out on 64-bits (for 2011 is on 32-bits) and there is known difference in particle multiplicity of the level of few % with respect to Sim05.

New EvtGen models: Eta2MuMuGamma and D0gammaDalitz

Some fixes in Mint

Introduce first integration of Herwig++

Many changes in the adaptor to Pythia8 (requires >160)

Adapt to changes in Gaudi for ParticlePropertySvc in namespace (for now keep the 'old' Gaudi one: will migrate to the LHCb one in the next version).

Add modifications for the new aregoel structure for 2012 and minor improvements to use different PMT photocatodes for RICH upgrade It automatically picks up the new DecFiles v25r*.

Based on LHCb v34r3 and Gaudi v23r2.

Uses HepMC 2.06.05, Pythia 6.425.2, Photos 2.15.4 and LHAPDF 5.8.5. Uses Pythia8 165.

Based on the v94r2p3 build of Geant4 9.4.p02 (latest patch, see this page).

MC production version for 2011 data (a.k.a. MC11a). Production with this version of Gauss are labelled either 'Sim05b' of 'Sim05c' when the latest 2011 database tags are used. There is known different behavior for some event types and possible different behavior for others in Sim05b. Sim05c with different database tags has some differences for calo pid and additional material. cuts

New models in EvtGen: added D0->pi+pi-pi0 decay model to EvtDDalitz, added new decay EvtBcVMuNu and EvtTVP models/classes bug fix for the EvtD0gammaDalitz model.

New models and bug fix in EvtGenExtras: added a new decay Bs -> f0(980) Mu Mu in the BTOSLLMS and BTOSLLMSEXT, fixed memory allocation problems in BTOSLLMS model (MAY AFFECT EVENT TYPES), added new model for Bq -> 4 leptons decay (BQTOLLLLHYPERCP), added flat sq Dalitz model for 3body decays.

New generators level cuts: added DaughtersInLHCbAndCutsForDACP cut tool modified DiLeptonInAcceptance.cpp to allow for cut on DOCA of leptons and cut on product of leptons' pT, added DaughtersInLHCbAndWithDaughAndBCuts

Bug fix in generator level cut: Use of LoKiGen v10r4 with fix to the oscillation flags in decay tree matching functions and already picked up by DaVinci since a long time. WILL AFFECT SOME EVENT TYPES: Bd and Bs event types using the LoKi::GenCutTool and potentially Ks event types using the LoKi::GenCutTool)

Bug fix and modification in Generators fix bug that provoked crash for flat smearing of primary vertices as needed by beam gas, updated EvtGenInPhSpDecay to allow configurable parameter file name

Changes in Gauss itself: modified example options for Gauss-MC11.py to remove spill-over, dynamic creation of QMTests for new event types in DecFiles

It automatically picks up the new DecFiles v25r*. DecFiles v25r12 neeeded to generate events with the new features introduced.

Based on LHCb v33r0 and Gaudi v22r4.

Uses HepMC 2.06.05, Pythia 6.425.2, Photos 2.15.4 and LHAPDF 5.8.6. Uses Pythia8 153.

Based on the v94r2p2 build of Geant4 9.4.p02 (latest patch, see this page).

Production version for MC11a.

Introduce a new generator extension to Pythia6 for Xicc and Xibc, GenXicc. Two new models in EvtGen, Eta2MuMuGamma and D0gammaDalitz.

It automatically picks up the new DecFiles v25r*.

Based on LHCb v33r0 and Gaudi v22r4.

Uses HepMC 2.06.05, Pythia 6.425.2, Photos 2.15.4 and LHAPDF 5.8.6. Uses Pythia8 153.

Based on the v94r2p1 build of Geant4 9.4.p02 (latest patch, see this page).

Production version for MC11a.

Fixes a bug for signal Ks to allow them to be produced from K0 removing bias on their momentum distribution. New generator cuts introduced: DaughtersInLHCbAndCutsForDstar and DaughtersInLHCbAndMassCut. New models in EvtGenExtras for B -> K_1(1270) Mu Mu and B -> K_1 (1400) Mu Mu. Fix bug in Pythia preventing some EW signal to be produced.

It automatically picks up the new DecFiles v25r*.

Based on LHCb v33r0 and Gaudi v22r4.

Uses HepMC 2.06.05, Pythia 6.425.2, Photos 2.15.4 and LHAPDF 5.8.6. Uses Pythia8 153.

Based on the v94r2p2 build of Geant4 9.4.p02 (latest patch, see this page).

Production version for MC11a.

Replaces Gauss v41r0 for production fixing bug in to calculate emittance. Introduce protection preventing options in AppConfig for older version of Gauss to be used.

It automatically picks up the new DecFiles v25r*.

Based on LHCb v33r0 and Gaudi v22r4.

Uses HepMC 2.06.05, Pythia 6.425.2, Photos 2.15.4 and LHAPDF 5.8.6. Uses Pythia8 153.

Based on the v94r2p2 build of Geant4 9.4.p02 (latest patch, see this page).

Production version for MC11a. Bug found in setting emittance affecting transversal size of beam. Replaced by v41r1.

Replaces all previous versions for tests. The default settings for Pythia are to generate events with D**/B** excited states. The default settings for Geant4 are set to be as close as possible to those of MC10.

It automatically picks up the new DecFiles v25r*.

Based on LHCb v33r0 and Gaudi v22r4.

Uses HepMC 2.06.05, Pythia 6.425.2, Photos 2.15.4 and LHAPDF 5.8.6. Uses Pythia8 153.

Based on the v94r2p2 build of Geant4 9.4.p02 (latest patch, see this page).

Should NOT be used: inconsistency bewteen two packages prevent its used. It has been removed!