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Summary report of the SLAC neutronHP workshopKOI, Tatsumi
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New and Future Development (Tue. 09:30-12:00)
ParticleHP and Interpolation Scheme
Adding break up reaction to HP
Status and feature development of GND, GIDI and
G4LEND
Development of Fission Fragment Generator
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July 2014 Status of particle_hp 3
What is particle_hp?
neutron_hp package uses evaluated nuclear data bases for neutron interactions: Total cross sections Inelastic channel cross sections Double differential spectra of outgoing particles Gamma emission because of nuclear level transitions
particle_hp: do the same for (inelastic) interactions of other particles (p, d, t, He3, )
Inelastic interactions of p/d/t/He3/ particles E < 200 MeV
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neutron_hp/particle_hp: interpolation of double differential cross sections
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Lawrence Livermore National Laboratory LLNL-PRES-xxxxxx6
GND• New “nuclear” data structure to replace ENDF-6 format
— ENDF atomic data also
GIDI• Transport code API for reading and sampling GND
data
FUDGE• Infrastructure for reading, viewing, modifying, checking,
processing and writing GND data
Outline
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Lawrence Livermore National Laboratory LLNL-PRES-xxxxxx7
Written in C• will probably convert to C++ in the next few years
GEANT4 wrappers written in C++• Interface called G4LEND
— Low Energy Nuclear Data (LEND)
Needs several LLNL libraries• PoPs (Property of Particles)• statusMessageReporter• numericalFunctions
GIDI code languages
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FISSION EVENT GENERATION
FISSION SAMPLING 8
• Goal: single event perspective
• Accurately reproduce single fission event
• Maintain overall fission statistics
• Conservation
• Mass
• Momentum
• Energy
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Performance Improvement (Tue. 13:30-15:00)
Performance improvement of neutronHP by simplified
Doppler broadening
Advanced applications of neutron simulation and data
formats
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10Geant4 Tutorial Cource
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Conservation (Tue. 15:00-17:00)
Introduction of conservation problem on data driven models
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Validation of gammas emission from neutron captured by Nitrogen nucleus
0.0E+00 2.0E+06 4.0E+06 6.0E+06 8.0E+06 1.0E+07 1.2E+070
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
DataENDF/B VII.r1HPHP w/o adjustmentPhoton Evaporation
energy [eV]
IIn
ten
sity
p
er
cap
ture
per
10k
eV
bin
Data: G. E. THOMAS et al., NIM 56, pp325-337 (1967)
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Biasing (Wed. 08:30-10:00)
Review of Geant4 biasing
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16Geant4 Tutorial Cource
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Nuclear Devices (Wed. 10:30-11:30)
G4-STORK: Stochastic Calculations of Reactor Kinetics
Accuracy and speed of the HP models
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19Geant4 Tutorial Cource
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20Geant4 Tutorial Cource
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22Geant4 Tutorial Cource
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Data preparation and documentation (Wed. 11:30-12:00,Lunch Break, 13:30-15:00)
CIEMAT data preparation for IAEA
See later slide
LLNL data preparation and international GND project
See later slide
Documentation of data format
Prepare documentation of cross section part
Full documentation needs huge efforts
Possibility to use conversion tools for providing
information
UI commands for setting environment variables of HP
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Lawrence Livermore National Laboratory LLNL-PRES-65671326
LLNL proposed this collaboration in order to promote GND (or something based on it) as the new standard
Entitled ‘Beyond the ENDF format: a modern nuclear database structure.’
Resources:• https://www.oecd-nea.org/science/wpec/sg38/• https://ndclx4.bnl.gov/gf/project/sg38/
International collaboration (WPEC SG38) has been formed to design a new format for storing nuclear data, and to oversee the transition from ENDF-6 to the new format.
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ReadyTalk
Audio
Use phone connection rather than PC
Toll free numbers are available for most countries
Web Application
Chat to specified person sometime useful
Every video from web-cam has same display size
Slide Share
Only chair person controls slides
Converting slides takes a long time
Only one set of slides can handle per session
Recording
Sound quality is surprisingly good and slides are also showing
Available from https://indico.cern.ch/event/319884/material/0/
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Thank you very much for all physical and remote
participants!!
I wish to have next round meeting soon!