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ReleaseNotes.11.3.html
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<HTML>
<HEAD>
<TITLE>Geant4 11.3 Release Notes</TITLE>
</HEAD>
<BODY BGCOLOR='F0F0F0'>
<P> </P>
<BR>
<P> </P>
<P ALIGN="Center">
<FONT SIZE="+4" COLOR="#238E23">
<B>Geant4 11.3 Release Notes</B>
</FONT>
<TABLE WIDTH="100%">
<TR><TD ALIGN="Right">
<FONT SIZE="-1" COLOR="#5C3317">
<B><I>December 6<SUP>th</SUP>, 2024</I></B>
</FONT>
</TD></TR>
</TABLE>
<BR><BR>
<HR ALIGN="Center" SIZE="7%">
<P>
The code and binary libraries for the supported systems are available
through our <A TARGET="ext" HREF="https://cern.ch/geant4/support/download">Source
Code Web page</A>.
</P>
<P>
<I>We are grateful for the efforts of Geant4 users who have provided
detailed feedback or comprehensive reports of issues.
We thank in particular those who have contributed corrections,
improvements or developments included in this release.</I>
</P>
<P>
Please refer to the
<A TARGET="ext" HREF="https://cern.ch/geant4/support/user_documentation">Geant4
User Documentation</A> for further information about using Geant4.
</P>
<H2><I>Contents</I></H2>
<OL>
<LI><A HREF="#1.">Supported and Tested Platforms</A></LI>
<LI><A HREF="#2.">Supported CLHEP, VecGeom and PTL versions</A></LI>
<LI><A HREF="#3.">Items for migration of the user code</A></LI>
<LI><A HREF="#4.">New Developments and Capabilities</A></LI>
<LI><A HREF="#5.">Expected effects on physics and performance</A></LI>
<LI><A HREF="#6.">Known Run-Time Problems and Limitations</A></LI>
<LI><A HREF="#7.">Compilation Warnings</A></LI>
<LI><A HREF="#8.">Geant4 Software License</A></LI>
<LI><A HREF="#9.">Detailed list of changes and fixes</A></LI>
</OL>
<P> </P>
<A NAME="1."></a>
<HR>
<!-- ============================================== -->
<H2>1. Supported and Tested Platforms</H2>
Platforms:
<UL>
<LI>Linux, gcc-14.2.0.<BR>
Tested on 64 bit architectures (Intel or AMD) with
Alma Linux 9 (based on RedHat Linux Enterprise 9).</LI>
<LI>macOS 15.1 Sequoia with Apple LLVM/Clang-16.<BR>
Tested on 64 bit architectures (Intel or Apple Silicon).</LI>
<LI>Windows-11 with Visual C++ 14.4 (Visual Studio 2022), 64 bits.</LI>
</UL>
More verified and tested configurations (64 bits):
<UL>
<LI>Linux, gcc-9.4/10.3/11.3/12.1/13.2, clang-16/17/19</LI>
<LI>Linux, Intel-icx 2024.2</LI>
<LI>macOS 13.6 Ventura with Apple LLVM/clang-15</LI>
<LI>macOS 14.7 Sonoma with Apple LLVM/clang-15</LI>
<LI>Windows/10 with Visual C++ 14.36 (Visual Studio 2022)</LI>
</UL>
<P> </P>
<A NAME="2."></A>
<HR>
<!-- ============================================== -->
<H2>2. Supported CLHEP, VecGeom and PTL versions</H2>
This release of Geant4 has been verified with
<A TARGET="ext" HREF="https://cern.ch/clhep/">CLHEP</A>, release <B>2.4.7.1</B>.
Use of a different CLHEP version may cause incorrect simulation results.<BR>
NOTE: an internal module of the relevant CLHEP classes is provided and can be
used as alternative to an external CLHEP library installation.<BR>
A configuration option allows a Geant4 installation to use the
<A TARGET="ext" HREF="https://gitlab.cern.ch/VecGeom/VecGeom/">VecGeom Library</A>
primitives, to replace the original Geant4 solids.<BR>
VecGeom version <B>2.0.0-rc3</B> or <B>1.2.10</B> can be adopted when using
such configuration.<BR>
PTL version <B>3.0.1</B> or later is required for external installation of the
<A TARGET="ext" HREF="https://github.com/jrmadsen/PTL">PTL tasking library</A>.<BR>
CMake <B>3.16</B> is the minimum version required to build Geant4.
<P> </P>
<A NAME="3."></A>
<HR>
<!-- ============================================== -->
<H2>3. Items for migration of the user code</H2>
Listed here is some relevant information on developments included in this
release.
Note that for all users a full re-installation of libraries (or a full
re-compilation) and a re-compilation of user applications is required.
<P> </P>
<B>General</B>
<P> </P>
<UL>
<LI>Fixed spurious compilation warnings on gcc when LTO settings are enabled.</LI>
<LI>Set default for GEANT4_INSTALL_PACKAGE_CACHE to be OFF.
This file is highly unstable on macOS and Spack installs, causing
problems for most users. Retain the ability to install this file if
really wanted, but change the default to NOT install it; in
general this will not change anything for users provided they have a
reproducible build environment setup.</LI>
<LI>Removed configuration/setup of no longer supported TiMemory profiling.</LI>
</UL>
<P> </P>
<B>Analysis</B>
<UL>
<LI>The G4Accumulable class was renamed in G4AccValue including the related
functions in G4AccumulableManager; the old class name is still available
via using.</LI>
<LI>The following G4AccumulableManager functions are deprecated (a warning
will be issued in compilation if present in user code):
<UL>
<LI><TT>CreateAccumulable<T>()</TT> [new name: <TT>CreateAccValue<T>()</TT>]</LI>
<LI><TT>GetAccumulable<T>()</TT> [new name: <TT>GetAccValue<T>()</TT>]</LI>
<LI><TT>RegisterAccumulable<T>()</TT> [new name: <TT>Register<T>()</TT>]</LI>
</UL></LI>
<LI>Newly added function <TT>Print(G4PrintOption)</TT> in the accumulable base
class G4VAccumulable requires to adapt user classes which implement the
<TT>Print()</TT> function without or with different arguments.</LI>
</UL>
<P> </P>
<B>Electromagnetic and optical physics</B>
<P> </P>
<UL>
<LI>New dataset G4EMLOW8.6.1 is required and should be used.</LI>
</UL>
<P> </P>
<B>Hadronic physics</B>
<P> </P>
<UL>
<LI>New hadronic datasets <TT>G4ENSDFSTATE-3.0, G4PhotonEvaporation-6.1,
G4RadioactiveDecay-6.1.2, G4PARTICLEXS-4.1</TT> are required and should be
used.</LI>
<LI>Since Geant4 version 11.2, the physics list QGSP_BERT_HP has a treatment
of low energy (< <TT>20 MeV</TT>) neutrons which is not the same as for
the other HP-based reference physics list (FTFP_BERT_HP, QGSP_BIC_HP,
Shielding, etc.).
QGSP_BERT_HP is still under validation, therefore it is not recommended for
physics studies, but users are welcome to try out and provide feedback.</LI>
<LI>Renamed G4RadioactiveDecay to G4VRadioactiveDecay and G4Radioactivation
to G4RadioactiveDecay. The header for G4Radioactivation is preserved to
provide backwards compatibility.</LI>
</UL>
<P> </P>
<B>Run</B>
<UL>
<LI>G4TaskRunManager now organises workers so that each divides its events
evenly across N tasks, rather than one task that processes all events for
the worker. This should have no observable effect, though applications
using the TBB backend to share it with non-Geant4 tasks may see different
overall task numbers and ordering. Event order and reproducibility are not
affected.</LI>
<LI>Tuned verbose levels to reduce printouts during event loop.</LI>
<LI>Added protection in <TT>G4VPrimaryGenerator::SetParticlePosition()</TT> to
avoid and warn for attempts to place vertex position outside or on surface
of the world volume.</LI>
<LI>Cleanly delete G4Event objects at the end of each run as long as the
events are not requested to be kept for redrawing during the following
<TT>Idle</TT> state. The kept events are deleted at the beginning of next
run or at program termination.
</UL>
<P> </P>
<B>Visualization and Modeling</B>
<P> </P>
<UL>
<LI>Restored OpenGL as default backend for Qt6. Fixed open issues when using
Qt6 with supported drivers. Qt6 is now fully supported.</LI>
</UL>
<P> </P>
<B>Data Sets</B>
<P> </P>
<UL>
<LI>This release introduces new data set versions.
Please see the corresponding details in
<A href="#data-notes">Section 9</A> of this document.
<UL>
<LI>New data set versions: <TT>G4ENSDFSTATE-3.0, G4PhotonEvaporation-6.1,
G4RadioactiveDecay-6.1.2, G4CHANNELINGDATA-1.0, G4EMLOW-8.6.1,
G4PARTICLEXS-4.1</TT>.</LI>
<LI>New optional data sets: <TT>G4NUDEXLIB-1.0, G4URRPT-1.1</TT>.</LI>
<LI>In order to use <TT>ParticleHP</TT> for charged particles
(protons, deuterons, tritons, He3 and alphas), an optional data
set <TT>G4TENDL-1.4</TT> is required, and can be optionally
downloaded in addition.</LI>
</UL></LI>
</UL>
<A NAME="4."></A>
<HR>
<!-- ============================================== -->
<H2>4. New Developments and Capabilities </H2>
<B>General</B>
<UL>
<LI>First full implementation of sub-event parallelism, with creation and
processing of sub-events in workers, and merging of results back into
events on the main thread. Added sub-event parallel mode as an option
in G4RunManagerFactory and new UI command for allowing trajectory merging.</LI>
</UL>
<B>Analysis</B>
<UL>
<LI>Added support for accumulable collections in analysis module.</LI>
</UL>
<B>Geometry & Field</B>
<UL>
<LI>Added option for performing the geometry initialisation phase,
i.e. creating the 'optimisation' voxels for navigation, in parallel mode.
The user can enable this option by calling the method
<TT>RequestParallelOptimisation(optimise, verbose)</TT> of
G4GeometryManager.</LI>
<LI>New revised and optimised implementation of G4GenericTrap shape.</LI>
<LI>Improved/optimised implementation of <TT>GetCubicVolume()</TT> in Boolean
solids.</LI>
<LI>Added new G4FieldBuilder class to construct what is needed (to carry out
the propagation) for a user-specified type (class) of a magnetic or
electromagnetic field; added also new classes to hold the accuracy
parameters for the propagation tracks in magnetic or EM fields.
Instantiating G4FieldBuilder also creates a set of UI commands in the
<TT>/field</TT> directory, for changing the default field integrator,
equation of motion and the accuracy parameters.
Note: the field class can be either user-defined or an existing type
from the toolkit, such as G4QuadrupleMagField or G4UniformElectricField.</LI>
</UL>
<B>Materials</B>
<UL>
<LI>Extended diagnostics and output from material scanner.</LI>
</UL>
<B>Electromagnetic physics</B>
<UL>
<LI>New processes G4DynamicParticleIonisation, G4DynamicParticleMSC and
G4DynamicParticleFluctuation, which perform computations on the fly using
only G4DynamicParticle data.</LI>
<LI>Optimised step limitation algorithm in G4UrbanMscModel.</LI>
<LI>G4eeToTwoGammaModel: fixed precision lost in sampling of final state
for very high energies.</LI>
<LI>New class G4EmDataRegistry, to keep EM data tables.</LI>
<LI>New 5D model for e+e- pair production by muons; classes
G4RiGeMuPairProductionModel and G4RiGeAngularGenerator.</LI>
<LI>New G4OrePowellAtRestModel and G4PolarizedOrePowellAtRestModel classes,
for Orel & Powell orto positronium decay model at rest, also polarized.</LI>
<LI>Implemented new model of ionization losses for e+- ionization for
channeling using the new channeling dataset.</LI>
<LI>New process G4CoherentPairProduction for the simulation of coherent
pair production by high energy gamma in an oriented crystal.</LI>
<LI>Simplified computation of cross-section maximum for discrete processes
in G4EmUtility.</LI>
<LI>Introduced new classes G4UnknownParticle and G4ChargedUnknownParticle,
part of ATLAS and LHCb request to assign automatically ionisation and
multiple scattering processes to charged primary particles with valid PDG
code but not known to Geant4.</LI>
<LI>Implemented production and decay of omega(780) and f2(1270) for pion
projectile and implemented decay of unstable isomers of recoil nucleus
if not a natural isotope.</LI>
<LI>New class G4XTRGaussRadModel, providing improved account on the origin
of XTR photons.</LI>
<LI>Updated adjoint simulation classes to allow running adjoint simulation
in MT mode.</LI>
<LI><U>Geant4-DNA</U>
<UL>
<LI>New classes implementing general models for ions heavier than Helium:
G4GeneralIonIonisationModel, G4DNAIonChargeIncreaseModel and
G4DNAIonChargeDecreaseModel.</LI>
<LI>New class focusing on generating multiple-ionised water ions and
calculating scale parameters to compute cross-sections of each
multiple-ionisation process: G4DNAMultipleIonisationManager.</LI>
<LI>New process classes for multiple-ionisation: G4DNADoubleIonisation,
G4DNATripleIonisation and G4DNAQuadrupleIonisation.</LI>
<LI>New model classes related to multiple-ionisation:
G4DNADoubleIonisationModel, G4DNATripleIonisationModel and
G4DNAQuadrupleIonisationModel.</LI>
<LI>In G4EmDNAPhysics, defining default maximum kinetic energy
<TT>600 MeV</TT> instead of <TT>300 MeV</TT> in order to have standard
ionisation and multiple scattering always defined for DNA physics
configurations.</LI>
</UL></LI>
</UL>
<B>Hadronic physics</B>
<UL>
<LI>The angular emission for 4-body and higher-body generation in the Bertini-like
intranuclear cascade model BERT has been improved.
This has a visible impact on the simulation of hadronic showers for most of the
reference physics lists, including FTFP_BERT and QGSP_BERT.</li>
<LI>First implementation of the optional NuDEX nuclear de-excitation hadronic model,
which provides a detailed emission of gammas and internal conversion electrons
from the de-excitation of nuclei.
This model relies on the new, optional dataset G4NUDEXLIB-1.0, accessed through
the G4NUDEXLIBDATA environmental variable.
For the time being, NuDEX can be utilised only for neutron capture in the
physics list QGSP_BERT_HP. To enable it, one needs to include the following
C++ code line <TT>G4HadronicParameters::Instance()->SetEnableNUDEX(true);</TT>
in the main program, before instantiating the physics list.</li>
<LI>For low-energy (< <TT>20 MeV</TT>) neutrons, introduced the optional
treatment of the Unresolved Resonance Region (URR) via Probability
Table (PT), relevant for precise simulations of nuclear reactor criticality
and shielding applications.
This special treatment can be activated on top of any reference physics list
based on HP or HPT by using the new physics list constructor class
G4URRNeutrons. There are two possible types of probability tables - NJOY and
CALENDF - and the choice between them can be done via the C++ code line, e.g.
<TT>G4HadronicParameters::Instance()->SetTypeTablePT("njoy")</TT>
in the main program, before instantiating the physics list.
This treatment, when activated, needs the new, optional dataset G4URRPT-1.1,
accessed through the G4URRPTDATA environmental variable.</LI>
<LI>New class G4InterfaceToXS, to compute inverse cross-section using
G4PARTICLEXS cross-sections for neutrons and light ions.</LI>
<LI>Optimised G4ChargeExchangeXS, switching computations from level of
isotopes to level of elements and making the code running faster
without loss of accuracy.</LI>
<LI>Added "HPT" extension to support adding G4ThermalNeutrons to extensible
physlist factory.</LI>
<LI>In de-excitation hadronic model, improved algorithm for handling of broken
levels in G4LevelReader.</LI>
<LI>Updates to cross-section classes to rationalise initialisation of data
in MT mode.</LI>
</UL>
<B>Physics Lists</B>
<UL>
<LI>New physics list constructor class G4ChargedUnknownPhysics, to be used
on top on any reference physics list, to assign ionisation and multiple
scattering (as well as transportation) processes to exotic charged particles,
i.e. primary charged particles with valid PDG code but not known to Geant4.</LI>
<LI>Added three new variants of <TT>Shielding</TT> physics list in
G4PhysListFactory: <TT>ShieldingLIQMD</TT>, <TT>ShieldingLIQMD_HP</TT> and
<TT>ShieldingLIQMD_HPT</TT>. These variants use the model G4LightIonQMDReaction.
Note that <TT>ShieldingLIQMD</TT> and <TT>ShieldingLIQMD_HP</TT> are the same:
the latter is introduced for consistency.</LI>
</UL>
<B>Visualization and Interfaces</B>
<UL>
<LI>Improved plotting with <TT>/vis/plot</TT> if TOOLS_USE_FREETYPE flag is set.
Set GEANT4_USE_FREETYPE=ON in CMake.</LI>
<LI>Improved identification of scene tree models in visualisation.
Now suppressing the scene tree if the number of touchables exceeds
10000 (equivalent to about 20 MB).</LI>
</UL>
<B>Examples</B>
<UL>
<LI>Extended example RE03 in 'extended/runAndEvent', demonstrating the ability
to run in sub-event parallel mode.</LI>
<LI>Introduced 'exoticphysics/channeling' examples category, created 'ch0'
example out of the original example and added 'ch1', 'ch2' and 'ch3'
examples. ch1: an easy demonstration of the minimum requirements necessary
to integrate the G4ChannelingFastSimModel and the G4BaierKatkov model into
a project in order to simulate the physics of channeling and channeling
radiation/coherent bremsstrahlung; ch2: an enhanced version of ch1,
providing the user with the full functionality of both demonstrated models,
with parameters set up via a macro; ch3: demonstrating the minimum
requirements necessary to integrate the G4CoherentPairProduction process
into a project, along with the demonstrated models, to simulate the physics
of electromagnetic showers in an oriented crystal.</LI>
<LI>Created a new dna category for Geant4-DNA advanced examples, including
<TT>moleculardna</TT> example, moved from extended category and new
<TT>cellularPhantom</TT> application, showing how to simulate the
irradiation of a 3D voxel phantom containing biological cells, created
from a confocal microscopy 24-bit RGB image. Reference:
P. Barberet et al., "Monte-Carlo dosimetry on a realistic cell monolayer
geometry exposed to alpha-particle", Phys. Med. Biol. 57 (2012) 2189-2207.</LI>
<LI>The Periodic Boundary Condition is implemented in the UHDR extended example
for Geant4-DNA microdosimetry simulations, based on
<A TARGET="ext" HREF="https://github.com/amentumspace/g4pbc">https://github.com/amentumspace/g4pbc</A>.
The effective box model is also implemented in the UHDR example based
on M. Karamitros et al., arXiv:2006.14225 (2020).</LI>
</UL>
<A NAME="5."></A>
<HR>
<!-- ============================================== -->
<H2>5. Expected effects on physics and computing performance</H2>
<B>Electromagnetic physics</B>
<UL>
<LI>Electromagnetic shower shapes will be affected on level of per mille
if 3-gamma annihilation is enabled. For low energy positively charged
particles the agreement of simulation versus data will be improved.</LI>
</UL>
<B>Hadronic physics</B>
<UL>
<LI>Due to the improvement in the angular emission of >= 4 particles in the
final-state of the BERT model, the hadronic showers for most of the reference
physics lists, including FTFP_BERT and QGSP_BERT, have few per-cent higher
energy response and narrower lateral shower shapes with respect to the
previous version, Geant4 11.2.
In other words, the hadronic string models (FTF and QGS) and the intranuclear
cascade model BERT become closer to each other in this Geant4 release.</LI>
<LI>The new hadronic dataset G4PhotonEvaporation-6.1 produces some visible differences
in the final-state of the photo-evaporation model in Tungsten, with respect to
the previous version.
This has an impact, at the per-cent level, on hadronic showers in Tungsten
calorimeters only for the physics lists QGSP_BIC and QGSP_INCLXX (whereas
those that are based on BERT model, e.g. FTFP_BERT and QGSP_BERT, are not
affected because BERT has its own internal nuclear de-excitation model that
does not use the G4PhotonEvaporation-6.1 dataset).</LI>
</UL>
<P> </P>
<A NAME="6."></A>
<HR>
<!-- ============================================== -->
<H2>6. Known Run-Time Problems and Limitations</H2>
For a complete list of outstanding run-time problems and to submit any
problem you may find while running this version of Geant4, please refer
to the
<A TARGET="ext" HREF="https://bugzilla-geant4.kek.jp/">Geant4 Problem
Reporting System</A>.
<P> </P>
<A NAME="7."></A>
<HR>
<!-- ============================================== -->
<H2>7. Compilation Warnings</H2>
There may be a few compilation warnings on some platforms.
We do not believe that any of these lead to incorrect run-time behaviour.
<P> </P>
<A NAME="8."></A>
<HR>
<!-- ============================================== -->
<H2>8. Geant4 Software License</H2>
A Software License applies to the Geant4 code.
Users must accept this license in order to use it.<BR>
The details and the list of copyright holders is available at
<A href="https://cern.ch/geant4/license">https://cern.ch/geant4/license</A>
and also in the text file <TT>LICENSE</TT> distributed with the source code.
<P> </P>
<A NAME="9."></A>
<HR>
<!-- ============================================== -->
<H2>9. Detailed list of changes and fixes</H2>
These are the main new features/fixes included in this release since the
last patched public release (for more detailed lists of fixes/additions,
please refer to the corresponding History files provided in most packages):
<P> </P>
<A NAME="conf-notes">
<H3><I>Configuration</I></H3></A>
<UL>
<LI><U>CMake</U>
<UL>
<LI>Support running example build-and-run tests in XCode on macOS.</LI>
<LI>Added support for use of sanitizers with XCode; ensure sanitizer flags
are forwarded to the linker when using Xcode, and all linker flags are
forwarded to builds of tests.</LI>
<LI>Added compiler flags for GCC only to help detect/debug LTO-related
problems when building with CMAKE_INTERPROCEDURAL_OPTIMIZATION.</LI>
<LI>Provide CMake function to assist in linking unit tests to final
libraries given required source code modules.</LI>
<LI>Removed configuration/setup of no longer supported TiMemory profiling.
<LI>Introduced new <TT>FullRelWithDebInfo</TT> build mode, <TT>-O3 -g</TT>,
so maximum optimisation with debugging symbols.</LI>
<LI>Simplifications to Geant4Config.cmake: removed obsolete and never run
"whole archive" linking of G4physics_lists; replaced TOOLSSG
visualisation driver variables that are just synonyms for more
fundamental config options (e.g. GEANT4_USE_QT) with the underlying
variable.</LI>
<LI>Simplified CMake/CTest functions and settings: moved <TT>geant4_add_test</TT>
function to dedicated module, retiring <TT>UseGeant4_internal</TT> file;
reduced oversetting of <TT>Geant4_DIR</TT> variable for use by tests.</LI>
<LI>Set default for GEANT4_INSTALL_PACKAGE_CACHE to be OFF.
This file is highly unstable on macOS and Spack installs, causing
problems for most users. Retain the ability to install this file if
really wanted, but change the default to NOT install it; in
general this will not change anything for users provided they have a
reproducible build environment setup.</LI>
<LI>Added optional install of new NuDEXLib and URRPT datasets.</LI>
<LI>Bump minimum VecGeom version to 1.2.9.</LI>
<LI>New data sets <TT>G4ENSDFSTATE-3.0</TT>, <TT>G4PhotonEvaporation-6.1</TT>,
<TT>G4RadioactiveDecay-6.1.2</TT>, <TT>G4CHANNELINGDATA-1.0</TT>,
<TT>G4EMLOW-8.6.1</TT>, <TT>G4PARTICLEXS-4.1</TT>,
<TT>G4NUDEXLIB-1.0</TT>, <TT>G4URRPT-1.1</TT>.</LI>
<LI>Updated tag-IDs for 11.3.</LI>
</UL></LI>
</UL>
<A NAME="ana-notes">
<H3><I>Analysis</I></H3></A>
<UL>
<LI>Added support for accumulable collections.
New classes: G4AccArray, G4AccMap, G4AccUnorderedMap, G4AccVector.</LI>
<LI>Added G4AccType enumeration for available accumulable types.</LI>
<LI>Added functions for printing with G4PrintOption argument to all accumulable
types and G4AccumulableManager (Note - this will require to update user
classes which implement the Print() function without or with different
arguments).</LI>
<LI>Added <TT>VerboseLevel</TT> in G4Accumulables and its setter/getter
in G4AccumulableManager.</LI>
<LI><U>Internal changes</U>:
<UL>
<LI>Renamed class G4Accumulable<T> in G4AccValue<T>, and added a using for
the old name for backward compatibility.</LI>
<LI>In G4AccumulableManager, replaced <TT>RegisterAccumulable()</TT> with
<TT>Register()</TT> and deprecated the function with the old name.</LI>
</UL></LI>
<LI><U>Fixes</U>:
<UL>
<LI>Fixed setting of file compression level in G4GenericFileManager:
propagate setting to all registered file managers.
Addressing problem report
<A href="https://bugzilla-geant4.kek.jp/show_bug.cgi?id=2625">#2625</A>.</LI>
<LI>Applyed clang-tidy checks to code (use of override, redundant data
initialisation, use of <TT>emplace-back</TT>).</LI>
<LI>Fixed reported Coverity defects (use <TT>std::move()</TT> and
<TT>const auto&</TT>, to avoid copying).</LI>
</UL></LI>
</UL>
<A NAME="digits-notes">
<H3><I>Digitization & Hits</I></H3></A>
<UL>
<LI>Fixed reported Coverity defects, use consistently <TT>const G4String&</TT>
to avoid implicit copy.</LI>
<LI>Fixed class description in headers. Use G4 types.</LI>
</UL>
<A NAME="emstd-notes">
<H3><I>Electromagnetic Processes</I></H3></A>
<UL>
<LI><B>Adjoint</B>
<UL>
<LI>Updates to allow running adjoint simulation in MT mode.</LI>
<LI>Fixed reported Coverity defects for use of <TT>const G4String&</TT>
and <TT>std::move()</TT>.</LI>
<LI>Minor code cleanup (use of default destructor, <TT>std::size_t</TT>,
G4 types, ...).</LI>
</UL></LI>
<LI><B>DNA</B>:
<UL>
<LI>Modified the molecule names of OH, HO2, O in MoleculeDefinition.
Each molecule configuration has a molecule definition.</LI>
<LI>Optimised IRT-syn at <TT>1 ps</TT> for high LET applications.</LI>
<LI>G4DNARuddIonisationExtendedModel: updated model to not use autolock but
rather upload data in the class constructor once in all threads; use
effective charge approach for all ions with <TT>Z > 2</TT> (in order to
have more correct computation of stopping power and ranges); precompute
internal variables before sampling; optimised algorithm of sampling
(at <TT>10 MeV</TT> it becomes considerably faster); updated initialisation
to allow be called from the general model; removed unused parameters.</LI>
<LI>G4GeneralIonIonisationModel, G4DNAIonChargeIncreaseModel and
G4DNAIonChargeDecreaseModel: new classes implementing general models
for ions heavier than Helium.</LI>
<LI>Fixed missing value in DNA PTB Ionization Structure.</LI>
<LI>Fixed missing <TT>GetMaterial()</TT> in DNA PTB Excitation and Elastic
models as suggested in
<A HREF="https://github.com/Geant4/geant4/pull/78">GitHub PR#78</A>.</LI>
<LI>G4DNAChargeDecrease, G4DNAChargeIncrease: removed obsolete definition
of min/max model energy inside processes class; some code clean-up.</LI>
<LI>G4DNAElectronHoleRecombination: changed branch condition in
<TT>FindReactant()</TT> to select only <TT>H2O+</TT> ions involved in
electron-hole recombination.</LI>
<LI>G4DNAWaterDissociationDisplacer: added dissociative decay channels for
multiple-ionised water ions.</LI>
<LI>G4DNAMultipleIonisationManager: new class focusing on generation of
multiple-ionised water ions and calculation of scale parameter to
compute cross-section of each multiple-ionisation process.</LI>
<LI>G4DNADoubleIonisation, G4DNATripleIonisation and
G4DNAQuadrupleIonisation: new process classes for multiple-ionisation.</LI>
<LI>G4DNADoubleIonisationModel, G4DNATripleIonisationModel and
G4DNAQuadrupleIonisationModel: new model classes related to
multiple-ionisation.</LI>
<LI>G4DNAELSEPAElasticModel: modified to be compatible with density
scaling.</LI>
<LI>Fixed condition for node insertion in G4KDTree.</LI>
<LI>Deleted DelayLists at the end of chemistry stage.</LI>
<LI>Delete unused enum, as now adopting EmParameters to control chemistry
models in G4EmDNAChemistry_option3.</LI>
<LI>Fixed reported Coverity defects for use of <TT>std::move()</TT>,
<TT>const auto&</TT> and const iterators.</LI>
<LI>Fixed reported Coverity defects in G4LEPTSElossDistr and
G4LEPTSDistribution for explicit null dereferenced pointer and
out-of-bounds reads; minor code cleanup.</LI>
<LI>Cleaned G4Scheduler and cleanup in CMake scripts.</LI>
</UL></LI>
<LI><B>High Energy</B>
<UL>
<LI>Added new processes G4DynamicParticleIonisation, G4DynamicParticleMSC
and G4DynamicParticleFluctuation, which perform computations on the fly
using only G4DynamicParticle data (G4ParticleDefinition is not used).</LI>
</UL></LI>
<LI><B>Low Energy</B>
<UL>
<LI>G4MicroElecCapture: fixed Coverity warning about division by zero via
modification of the formula to compute MFP and added an upper limit
<TT>500 eV</TT> for this process.</LI>
<LI>Fix in G4PenelopeBremsstrahlungAngular, for a crash observed when the
angular generator is used with a Bremsstrahlung model other than
G4PenelopeBremsstrahungModel.</LI>
<LI>In G4UAtomicDeexcitation, reset vector <TT>vacancyArray</TT> in
<TT>GenerateParticles()</TT>, to avoid rare case of event
non-reproducibility, observed when using EM Opt4 (EMZ) physics-list.</LI>
<LI>G4FluoData, G4hIonEffChargeSquare, G4MicroElecInelasticModel_new:
fixed reported Coverity defects.</LI>
<LI>Fixed reported Coverity defects for use of <TT>std::move()</TT>.</LI>
<LI>G4MicroElecLOPhononModel: minor code cleanup.</LI>
</UL></LI>
<LI><B>Muons</B>
<UL>
<LI>G4RiGeMuPairProductionModel, G4RiGeAngularGenerator: a new 5D model
for e+e- pair production by muons.</LI>
<LI>Fixed declaration of virtual destructors in several header files.</LI>
<LI>G4MuPairProductionModel: minor cleanup for better code readability.</LI>
</UL></LI>
<LI><B>Standard</B>
<UL>
<LI>New G4OrePowellAtRestModel class, Orel & Powell orto positronium decay
model AtRest. New class G4PolarizedOrePowellAtRestModel for polarized
Orel & Powell orto positronium decay model at rest.</LI>
<LI>G4IonICRU73Data: fix for the case when target material has an element
with <TT>Z>92</TT>; improved debug printouts. In the Lindhard-Sorensen
model to compute dEdx the first try is to take it from ICRU73 or ICRU90
data, if this class returns zero, then dEdx is computed from
G4GenericIon and effective charge. Addressing problem report
<A href="https://bugzilla-geant4.kek.jp/show_bug.cgi?id=2586">#2586</A>.</LI>
<LI>G4eeToTwoGammaModel: fixed precision lost in sampling of final state
for the very high energy (ATLAS report).</LI>
<LI>G4UrbanMscModel: optimised DistanceToBoundary step limitation
algorithm currently used only in Opt3 EM physics.</LI>
<LI>G4SimplePositronAtRestModel, G4AllisonAtRestModel: new classes to
sample positron annihilation.</LI>
<LI>Renamed G4eplusTo2GammaOKVIModel to G4eplusTo2or3GammaModel.
Removed sampling at rest.</LI>
<LI>G4WentzelOKandVIxSection: fixed rejection factor for sampling of single
scattering with nuclear form-factor. Addressing problem report
<A href="https://bugzilla-geant4.kek.jp/show_bug.cgi?id=2627">#2627</A>.</LI>
<LI>G4BraggModel: fixed issue observed with <TT>4.12 MeV</TT> mu+ range,
reported in Users Forum.</LI>
<LI>Static initialization improvement for G4eBremsstrahlungRelModel.
Use <TT>std::shared_ptr</TT> for LPMFuncs and ElementData.</LI>
<LI>G4ionIonisation: use G4BraggIonModel only for alpha and G4BraggModel
for other ions in the default EM physics.</LI>
<LI>G4eplusAnnihilation: added selection of AtRest model; implemented
<TT>ApplyCuts()</TT> for AtRest; implemented choice of positron
annihilation model at rest. Use more const class members; changed
model ID definition for produced tracks. Updated configuration of
models AtRest, the choice of 2-gamma, 3-gamma final states is
implemented in one place. Use orto positronium fraction from material
property and not from EM parameters.</LI>
<LI>G4BetheBlochModel: set flags <TT>isIon</TT> and <TT>isAlpha</TT> at
initialisation and not at run time.</LI>
<LI>G4BetheHeitlerModel: include optional possibility to use EPICS2017
cross-section.</LI>
<LI>G4BetheHeitler5DModel: added extra protection against division by zero.</LI>
<LI>Fixed reported Coverity defects in several classes.</LI>
</UL></LI>
<LI><B>Utils</B>
<UL>
<LI>G4EmElementXS: new helper class to cross-section data.</LI>
<LI>G4EmParameters: increased low-limit on 'maxKinEnergy' parameter from
<TT>10 MeV</TT> to <TT>600 MeV</TT> in order to have standard ionisation
and multiple scattering always defined for DNA physics configurations.
Added protection to fix segmentation fault when data is unavailable.
Added flag to enable/disable the new Ricardo-Gerardo model of e+e-
pair production.</LI>
<LI>G4EmParameters, G4EmParametersMessenger: added enumerator and a new
flag G4PositronAtRestModel, which allows selection and configuration of
the model of positron annihilation at rest. Added orto positronium
fraction flag. Added Ore-Powell models to the list of models for
positron annihilation at rest. Added Boolean flag <TT>UseEPICS2017</TT>.
Removed parameter defining fraction of orto positronium for all
materials. Added flag to enable/disable 3 gamma annihilation on fly.</LI>
<LI>G4EmConfigurator: handle G4TransportationWithMsc process name.</LI>
<LI>G4TransportationWithMsc: set TRANSPORTATION_WITH_MSC process sub-type.</LI>
<LI>G4LowEnergyEmProcessSubType: added <TT>fLowEnergyTripleIonisation</TT>
and <TT>fLowEnergyQuadrupleIonisation</TT> for implementing
multiple-ionisation processes in Geant4-DNA.</LI>
<LI>G4VPositronAtRestModel: new virtual interface.</LI>
<LI>G4EmDataRegistry: new class to keep EM data tables.</LI>
<LI>G4VEmProcess: extended info printout for e+ annihilation at rest.</LI>
<LI>G4VEmProcess, G4VEnergyLossProcess: improved identification of model ID
for atomic de-excitation (fluorescence, Auger e-, PIXE).</LI>
<LI>G4EmParameters, G4EmLowEParameters, G4EmLowEParametersMessenger: added
DNA chemistry time step model.</LI>
<LI>G4EmDataHandler: extended functionality.</LI>
<LI>G4LossTableManager: identify master thread using <TT>std</TT> method.</LI>
<LI>G4LossTableBuilder: more accurate use of static members and methods.</LI>
<LI>G4VEmModel, G4VEmProcess, G4VEnergyLossProcess, G4EmTableUtil: updated
according to change in the data.</LI>
<LI>G4VMscModel: moved initialisation of tables for model to G4EmTableUtil.</LI>
<LI>G4EmBiasingManager: minor cosmetic change.</LI>
<LI>G4EmProcessSubType: added sub-types for dynamic EM processes
(G4ParticleDefinition is not used, all computations on the fly).
Added coherent channeling pair production process type.</LI>
<LI>Fixed reported Coverity defects.</LI>
</UL></LI>
<LI><B>Xrays</B>
<UL>
<LI>G4XTRGaussRadModel: new class providing improved account on the origin
of XTR photons.</LI>
<LI>G4VTRModel: added empty implementation to <TT>GenerateSecondaries()</TT>
method to resolve linker error on clang compiler.</LI>
<LI>Fixed reported Coverity defect in G4VXTRenergyLoss.</LI>
</UL></LI>
</UL>
<A NAME="error-propagation">
<H3><I>Error Propagation</I></H3></A>
<UL>
<LI>Fixed reported Coverity defect in G4ErrorFreeTrajState for use of
<TT>const G4String&</TT> and <TT>std::move()</TT>.</LI>
</UL>
<A NAME="event-notes">
<H3><I>Event</I></H3></A>
<UL>
<LI>Implementated new feature for creation and processing of sub-events.</LI>
<LI>Added protection in G4VPrimaryGenerator in <TT>SetParticlePosition()</TT>
to avoid and warn for attempts to place vertex position outside or on
surface of the world volume.</LI>
<LI>In G4Event, changed data member <TT>keepTheEvent</TT> to <TT>mutable</TT>
so that <TT>KeepTheEvent()</TT> method can be invoked forconst G4Event
object.</LI>
<LI>G4PrimaryTransformer: adding sanity check of 4-momentum.</LI>
<LI>Added UI command to switch on/off the vertex position check (default: on).</LI>
<LI>Updated <TT>/gun/position</TT> UI command guidance in G4ParticleGunMessenger.
Removed unnecessary setting of gun position to <TT>(0, 0, 0)</TT>.</LI>
<LI>Improved use of Mutex lock in G4EventManager for sub-event level parallelism.</LI>
<LI>G4PrimaryTransformer: adapted and extended after introduction of the new
class G4ChargedUnknownParticle (part of ATLAS and LHCb request to assign
automatically ionisation and multiple scattering processes to charged
primary particles with valid PDG code but not known to Geant4).</LI>
<LI>Fixed reported Coverity defects: in G4GeneralParticleSourceMessenger for
use of <TT>const auto&</TT> and use of <TT>const G4String&</TT>; in
G4StackManager for copy/paste error in printout.</LI>
<LI>Removed use of no longer supported TiMemory.</LI>
</UL>
<A NAME="externals-notes">
<H3><I>Externals</I></H3></A>
<UL>
<LI><U>G4tools</U>:
<UL>
<LI>Updated to version 6.3.3</LI>
<LI>Fixed reported Coverity defects for use of <TT>const</TT> references
and <TT>std::move()</TT>. Fixed cases of potential divide by zero.</LI>
<LI>In <TT>wroot/file</TT>, fixed buffer size in function
<TT>compress_buffer()</TT>. In <TT>wroot/basket</TT>, suppressed test
in <TT>write_on_file()</TT>. Addressing problem report
<A href="https://bugzilla-geant4.kek.jp/show_bug.cgi?id=2625">#2625</A>.</LI>
<LI>Fixed typo in <TT>columns</TT> class member name; issue picked up by
clang-19 compiler on Linux.</LI>
</UL></LI>
<LI><U>PTL</U>:
<UL>
<LI>Synchronised with version PTL-3.0.1. Retaining patches for Geant4
source layout in configuration.</LI>
<LI>Fixed reported Coverity defects for use of <TT>std::move()</TT> and
removal of structurally dead code.</LI>
<LI>Added max CMake version in PTLConfig.cmake.in to suppress warnings in
latest CMake versions about support for 3.10 being dropped.</LI>
</UL></LI>
</UL>
<A NAME="gen-notes">
<H3><I>General Processes</I></H3></A>
<UL>
<LI><B>Biasing</B>
<UL>
<LI>Fixed reported Coverity defects, to use <TT>const G4String&</TT> for
avoiding implicit copies.</LI>
</UL></LI>
<LI><B>Management</B>
<UL>
<LI>G4ParticleTypes: added G4ChargedUnknownParticle class; part of ATLAS
and LHCb request to assign automatically ionisation and multiple
scattering processes to charged primary particles with valid PDG code
but not known to Geant4.</LI>
</UL></LI>
<LI><B>Optical</B>
<UL>
<LI>G4OpWLS2: change <TT>SetProcessSubType()</TT> from fOpWLS to fOpWLS2.</LI>
</UL></LI>
<LI><B>Scoring</B>
<UL>
<LI>Added safeguard for zero energy deposited in G4EnergySplitter.
Addressing problem report
<A href="https://bugzilla-geant4.kek.jp/show_bug.cgi?id=2629">#2629</A>.</LI>
</UL></LI>
<LI><B>Solid State</B>
<UL>
<LI>Fixed reported Coverity defects in G4ChannelingOptrChangeCrossSection
and G4ChannelingOptrMultiParticleChangeCrossSection.</LI>
</UL></LI>
<LI><B>Transportation</B>
<UL>
<LI>Introduced TRANSPORTATION_WITH_MSC process sub-type in
G4TransportationProcessType.</LI>
</UL></LI>
</UL>
<A NAME="geo-notes">
<H3><I>Geometry</I></H3></A>
<UL>
<LI><B>Biasing</B>
<UL>
<LI>Fixed reported Coverity defect in G4WeightWindowStore, to use
<TT>std::move()</TT> for avoiding implicit copy.</LI>
</UL></LI>
<LI><B>Divisions</B>
<UL>
<LI>Applied trivial clang-tidy fixes to classes, i.e. use of default
constructor/destructor.</LI>
</UL></LI>
<LI><B>Magnetic Field</B>
<UL>
<LI>Added new classes for automatic field construction from parameters:
G4FieldBuilder[Messenger], G4FieldParameters[Messenger] and
G4FieldSetup.</LI>
<LI>Improved stability of static initialisation for <TT>StepperType()</TT>
and <TT>StepperDescription()</TT> in G4DormandPrince745.</LI>
<LI>Applied trivial clang-tidy fixes to classes, i.e. use of default
constructor/destructor, auto and using statements.</LI>
<LI>Minor cleanup in QSS classes.</LI>
<LI>Fixed reported Coverity defects for use of <TT>std::move()</TT>
and <TT>const auto&</TT>, to avoid copying.</LI>
</UL></LI>
<LI><B>Management</B>
<UL>
<LI>Added new capability to run voxel optimisation in threads in MT mode.
Parallelises only over volumes. The user can call the method
<TT>RequestParallelOptimisation(optimise, verbose)</TT> from
G4GeometryManager to turn it on/off (default is off).
Set <TT>verbose=true</TT> to obtain statistics on the
volumes with biggest contribution to memory size and CPU time for
voxelisation.
New method <TT>BuildOptimisationsParallel()</TT> can be called by
G4WorkerRunManager to initialise. New method <TT>ReportVoxelInfo()</TT>
to write out for verification. Checked with simple and complex/large
geometries.</LI>
<LI>Added new methods <TT>GetNumOfConstituents()</TT> and <TT>IsFaceted()</TT>
to G4VSolid.</LI>
<LI>Access G4GeometryManager singleton through its <TT>GetInstance()</TT>
in stores.</LI>
<LI>Applied trivial clang-tidy fixes to classes, i.e. use of default
constructor/destructor.</LI>
</UL></LI>
<LI><B>Navigation</B>
<UL>
<LI>G4TransportationManager now notifies G4FieldManager about the global
field via its new function <TT>SetGlobalFieldManager()</TT>.
This provides the ability to access/revise the global field manager
directly from G4FieldManager without dependency on the navigation
module.</LI>
<LI>In G4MultiLevelLocator, in <TT>EstimateIntersectionPoint()</TT>,
moved repeated assertion on invalid intersection within G4DEBUG_FIELD,
to avoid excess of warning printouts in rare cases of failed
convergence, as reported by CMS.</LI>
<LI>Applied trivial clang-tidy fixes to classes, i.e. use of <TT>override</TT>
and removal of <TT>virtual</TT> keywords; use of default
constructor/destructor.</LI>
</UL></LI>
<LI><B>Solids (Boolean)</B>
<UL>
<LI>In G4BooleanSolid, propagate parameter to all constituents in
<TT>SetCubVolStatistics()</TT> and <TT>SetCubVolEpsilon()</TT>.</LI>
<LI>In G4UnionSolid and G4SubtractionSolid, limit calculations with
construction of temporary G4IntersectionSolid by 10 constituents for
<TT>GetCubicVolume()</TT>.</LI>
<LI>Implemented new methods <TT>GetNumOfConstituents()</TT> and
<TT>IsFaceted()</TT>.</LI>
<LI>G4MultiUnion: in <TT>GetCubicVolume()</TT>, use
<TT>EstimateCubicVolume()</TT>.</LI>
<LI>G4BooleanSolid: in <TT>SetCubVolStatistics()</TT> and
<TT>SetCubVolEpsilon()</TT>, added check for G4MultiUnion to avoid
memory corruption.</LI>
<LI>Added extra method to process solid and not perform external operations
via G4Polyhedron. Successive Boolean mesh operations with floating point
are invariably going to be unstable. Providing a method which takes a
solid and returns the G4Polyhedron allows the external processor to use
significantly more precise types and strategies to avoid ambiguity and
then finally convert to double at the very last step.</LI>
</UL></LI>
<LI><B>Solids (CSG)</B>
<UL>
<LI>Implemented new methods <TT>GetNumOfConstituents()</TT> and
<TT>IsFaceted()</TT>.</LI>
<LI>Applied trivial clang-tidy fixes to G4CSGSolid, i.e. use of
<TT>override</TT>.</LI>
</UL></LI>
<LI><B>Solids (Specific)</B>
<UL>
<LI>Completely revised and optimised implementation of G4GenericTrap.
Addressing problem report
<A href="https://bugzilla-geant4.kek.jp/show_bug.cgi?id=2547">#2547</A>.</LI>
<LI>Implemented new methods <TT>GetNumOfConstituents()</TT> and
<TT>IsFaceted()</TT>.</LI>
<LI>Removed internal cached state of G4TwistedTubs and G4VTwistedFaceted.
Addressing problem report
<A href="https://bugzilla-geant4.kek.jp/show_bug.cgi?id=2619">#2619</A>.</LI>
<LI>G4ExtrudedSolid: fixed defects reported by Coverity.</LI>
<LI>Fixed reported Coverity defects in G4Voxelizer; use <TT>std::move()</TT>
instead of plain vector copy in several methods.</LI>
<LI>Applied trivial clang-tidy fixes to classes, i.e. use of <TT>override</TT>
and <TT>default</TT> keywords.</LI>
</UL></LI>
<LI><B>Volumes</B>
<UL>
<LI>Access G4GeometryManager singleton through its <TT>GetInstance()</TT>
in G4AssemblyStore.</LI>
<LI>Applied trivial clang-tidy fixes to G4AssemblyStore, i.e. removed
unnecessary <TT>if</TT> check for null pointer in <TT>Clean()</TT>
method.</LI>
<LI>Fixed reported Coverity defect in G4ReflectionFactory, to not pass
the same G4VisAttributes object to the reflected logical volume.</LI>
</UL></LI>
</UL>
<A NAME="glob-notes">
<H3><I>Global</I></H3></A>
<UL>
<LI>Moved flushing of G4cout to G4iosFinalization, resolving a problem of
possible static destruction issue reported by ATLAS.</LI>
<LI>Improved stability of static initialisation in G4ios; ensure unique
initialisation and finalisation.</LI>
<LI>Added method <TT>Report()</TT> to G4AllocatorList, for monitoring
G4Allocator objects.</LI>
<LI>G4StateManager, G4VStateDependent: added notifying methods when an event
or a run is deleted to avoid a state-dependent class from accessing to an
obsolete event/run object.</LI>
<LI>G4PhysicsModelCatalog: added ID for the NuDEX nuclear de-excitation model;
removed unnecessary ID (24110) for internal conversion.</LI>
<LI>G4PhysicsTable: avoid crash in printout for the case when a vector in the
table is not yet created (useful for debugging).</LI>
<LI>Updated G4TBBTaskGroup for changes to underlying PTL-3.0.0 API.</LI>
<LI>Added protection in G4ConvergenceTester in <TT>calStat()</TT> in case of
zero histories.</LI>
<LI>Addressed Coverity reported defects for use of <TT>std:move()</TT> to
avoid copies in HEPNumerics; fixed potential division-by-zero in
G4SimplexDownhill.</LI>
<LI>Applied fixes from clang-tidy.</LI>
<LI>Removed use of no longer supported TiMemory.</LI>
<LI>Updated date of release for 11.3.</LI>
</UL>
<A NAME="greps-notes">
<H3><I>Graphical Representations</I></H3></A>
<UL>
<LI>G4SceneTreeItem: added G4String field <TT>FurtherInfo</TT> and access
functions.</LI>
<LI>G4Colour: clarify usage; added <TT>GetColor()</TT> (US spelling);
added G4Exception.</LI>
<LI>G4VVisManager: added <TT>EventReadyForVis()</TT>, used by
G4SubEvtRunManager.</LI>
<LI>In G4VVisManager, provide all base class interfaces in Sequential and MT