Transcript GEANT4 History - unisalento.it

GEANT4 Introduction, History
Geant4 User’s Workshop
February 2002
Goals
P58/RD44
 Detector
simulation toolkit for HEP
 World-wide collaboration
 Requirements from physicists in:
 LHC
 heavy
ions, CP violation, cosmic rays, medical
and space science applications
 Software
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Engineering and OO technology
Geant4 External Review
P58/RD44 1994
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Objectives 94-97
 Major
RD44
objectives reached in 1995
 Problem
domain decomposition and OOA&D
 Geometry&tracking prototype + benchmarks
 Major
objectives reached in 1996-7
a-version, functionality comparable to G3
 Persistency
via RD45 (hits) + benchmarks
 Transparency of physics processes & models
 User Requirement Document v 0.6
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Geant4 User's Workshop
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RD44 1997
Geant4 production releases
 Dec
’98 - Geant4.0.0 release
 Jul ’99 - Geant4.0.1 release
…
 Dec ’00 – Geant4 3.0 release
 Apr ’01 – Geant4 3.1 release
 Jun ’01 – Geant4 3.2 release
 Dec ’01 – Geant4 4.0 release
Two scheduled public releases per year.
Monthly development releases for collaboration members.
Patches & minor releases with fixes, improvements.
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Geant4 External Review
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Workplan: methodology
 Software
 URD:
RD44
Engineering
PSS-05; OOA&D: Booch; CASE: Rose
 Testing: test-cases per class; 400 for hadronics
 Standards:
 STEP,
ODMG, OGL, VRML, CVS, C++, RW/STL
 Assumptions:
 LHC++
 strategy
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for free and commercial software on www
Geant4 External Review
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RD44 1997
Class Category Diagram (1998)
Persistency
RUN
UI_GUI
Visualization
EVENT manag.
EV.GENER.
DIGI
TRACKING
PHYSICS
HIT
CAD int.
TRACK
GEOM
MATERIAL
FIELDS
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Geant4 External Review
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PARTICLE
Intercoms, global
RD44
Quality assurance
 Insure++
and Logiscope for software
reliability and metrics
 CASE Rose (also with reverse engineering)
for design reviews
 Coding guidelines automatic checking
 Code inspections within subdomains
 Code and design inspection for categories
interfaces
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Geant4 External Review
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Geant4 3.0
 New
(Dec. 2000)
module: analysis
 manager
 General
for histograms; drivers; for using AIDA
Particle Source
 flexible
primary particle ‘source’
 e+/e- Bremsstrahlung
 new cross section and energy-loss parameterization

New "advanced" examples:
 X-ray and g-ray telescopes, brachytherapy
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Geant4 External Review
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Geant4 3.1 minor release
(April 2001)
 “Minor”
new functionality
 Problem fixes, improvements
 Also
 migration
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to direct use of STL in many areas
Geant4 External Review
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The latest release of Geant4
The latest release of Geant4 was 4.0, a major release on
December 14th and included
 New
theoretical hadronic models
CHIPS for gamma-Nucleus, p capture and intranuclear transport
 Cascade+Pre-compound re-engineered from HETC (not ready)

 Ability

By saving/retrieving physics processes’ table
 A field

can now be set to any volume or volume tree
Overriding a potential global ‘default’ field

Note that, for now, all fields must be addressed in global coordinates
 Ability

to reduce initialisation time
to set different Cuts for different regions
In a first implementation (for urgent clients)
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Geant4 External Review
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HARP
Geant4 Collaboration
Univ. Barcelona
Lebedev
Helsinki Inst. Ph.
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Geant4 External Review
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PPARC
Collaborators also from nonmember institutions, including
Budker Inst. of Physics
IHEP Protvino
MEPHI Moscow
Pittsburg University
Geant4 platforms today
 Platforms
 SUN:
supported:
CC 5.1
 Linux: g++ 2.95.2, egcs 1.1.2
 Windows
NT/2000: Visual C++ 6.0 SP5, g++
 DEC (support, testing to be dropped June 2002)
All platforms use native STL
 Not supported

 HP –

Geant4 4.0 worked
AIX, SGI – status unknown
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Geant4 External Review
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