Data handling EXTEND Budapest, 1 ‐ 12 September 2008 Hans Henriksson H Henriksson EXTEND Data handling, 1 ‐ 12 Sept 08 1
Who is the lecturer? • MSc Engineering Physics, Uppsala University, Sweden. • PhD in applied nuclear physics (fusion neutron emission with a magnetic proton recoil spectrometer). • Researcher at JET, UKAEA Culham during deuterium ‐ tritium experiments. • Nuclear physicist at the OECD Nuclear Energy Agency (NEA) in Paris. • Finished the Paris Marathon 2007. Your background? H Henriksson EXTEND Data handling, 1 ‐ 12 Sept 08 2
Contents NEA Data Bank International collaboration Experimental data Evaluated data Applications Tools H Henriksson EXTEND Data handling, 1 ‐ 12 Sept 08 3
Nuclear data applications • Nuclear energy: Fission and Fusion • Accelerator design • Shielding • Nuclear waste • Safeguards • Medicine • Environmental monitoring • Materials analysis • Dosimetry & radiation safety • Nuclear astrophysics H Henriksson EXTEND Data handling, 1 ‐ 12 Sept 08 4
NEA Data Bank, Nuclear Data Services � International reference centre for basic nuclear tools, i.e. computer codes and nuclear data for analysis and predictions. � Provide a direct service to its users by developing, improving and validating these tools and making them available as requested. H Henriksson EXTEND Data handling, 1 ‐ 12 Sept 08 5
Nuclear data services H Henriksson EXTEND Data handling, 1 ‐ 12 Sept 08 6
Nuclear data from request to application Request 2 Request n Experiment Experiment Request Experiment Theory Data Data Analysis Presentation Analysis Presentation Data Analysis Presentation Models, Codes EXFOR Evaluation HPRL Check / Validation JEFF JANIS Evaluated Data ENDF/B Library Applications JENDL Processed data Processing MCJEFF31 Codes H Henriksson EXTEND Data handling, 1 ‐ 12 Sept 08 7
International collaboration International network of four nuclear reaction data centres (NRDC) was established in 1969: • OECD / NEA Data Bank, France • IAEA Nuclear Data Section (NDS), Austria • National Nuclear Data Center (NNDC), BNL, USA • IPPE Nuclear Data Center (CJD), Russian Federation Services: • Coordinates the collect and prepare experimental data and bibliographic information in EXFOR and CINDA. • Database web retrievals • Distribution of nuclear data and computer programs • Preparation and publication of reports and handbooks H Henriksson EXTEND Data handling, 1 ‐ 12 Sept 08 8
9 Specialised centres in the NRDC network ATOMKI Charged-Particle Nuclear Reaction Data Group, Hungary Centre for Experimental Photonuclear Data, Russian Federation (CDFE) Centre of Nuclear Physics Data (CNPD), Russian Federation Chinese Nuclear Data Center (CNDC), China JAEA Nuclear Data Center, Japan Japanese Charged-Particle Nuclear Reaction Data Group (JCPRG), Japan KAERI Nuclear Data Evaluation Laboratory, Korea Russian Nuclear Structure and Reaction Data Center (CAJAD), Russia Ukraine Nuclear Data Center (UKRNDC), Ukraine H Henriksson EXTEND Data handling, 1 ‐ 12 Sept 08
Nuclear data from request to application Request 2 Request n Experiment Experiment Request Experiment Theory Data Data Analysis Presentation Analysis Presentation Data Analysis Presentation Models, Codes EXFOR Evaluation HPRL Check / Validation JEFF JANIS Evaluated Data ENDF/B EVA Applications JENDL Processed data Processing MCJEFF31 Codes H Henriksson EXTEND Data handling, 1 ‐ 12 Sept 08 10
NEA W orking P arty of international nuclear data E valuation C o ‐ operation ( WPEC ) Activities (http://www.nea.fr/html/science/wpec/) � Established to promote the exchange of information on nuclear data evaluations, measurements, nuclear model calculations, validation . � Provides a framework for co ‐ operative activities between the participating projects: BROND, CENDL, ENDF/B, JEFF, JENDL � Assesses needs for data improvements and initiates joint evaluation and/or measurement efforts in subgroups to solve problems. � Annual meetings are held where the progress in evaluated data and related measurement activities is reviewed. � Identification of common problems and setting up of subgroups to solve these problems. H Henriksson EXTEND Data handling, 1 ‐ 12 Sept 08 11
WPEC Organisation Europe Japan USA non-OECD (JEFF project) (JENDL project) (ENDF project) (IAEA, Russia, China) 4 members 4 members 4 members 4 members (through IAEA) Subgroup 1 Subgroup 2 Subgroup 3 Subgroup n � Established in 1989, reorganised in 1999 � 16 members H Henriksson EXTEND Data handling, 1 ‐ 12 Sept 08 12
WPEC output • Each subgroup publishes a report • 23 reports published so far • Reports available from www.nea.fr/html/science/wpec/ H Henriksson EXTEND Data handling, 1 ‐ 12 Sept 08 13
Recent WPEC subgroup activities Subgroup C: High Priority Nuclear Data Request List (HPRL) Subgroup 25: Assessment of fission product decay data for decay heat calculations (Report in 2006) Subgroup 26: Nuclear data needs for advanced reactor systems (Report Aug 2008) Subgroup 27: Prompt photon production from fission products (ongoing) Subgroup 24+28: Production and processing of covariances (ongoing) 235 U capture cross section in the keV to MeV energy region (ongoing) Subgroup 29: Subgroup 30: Improvement of EXFOR accessibility and quality (ongoing) Subgroup 31: Meeting Nuclear Data Needs for Advanced Reactor Systems (new) Subgroup 32: Unresolved resonance treatment for cross sections and covariances (new) H Henriksson EXTEND Data handling, 1 ‐ 12 Sept 08 14
Back www.nea.fr/html/dbdata/hprl H Henriksson EXTEND Data handling, 1 ‐ 12 Sept 08 15
Experimental nuclear reaction data EXFOR � EXFOR contains information on about 17,300 experiments, divided in 130,000 data sets. � Neutron as well as charged particle data Compulsory compilation: A (of projectile) ≤ 12, E in ≤ 1 GeV. Data is collected through: o Direct contact with the data producer o Published data or reports publicly available, or sent to the NRDC o Data only available as graphs (old articles) extracted manually. o Experimental data, theoretical models and evaluations are collected from all available literature on nuclear data in the world. Compilation tools include for example: o Scanning tools to digitize graphical data, e.g GSYS ‐ 2. o Program to facilitate the compilation, e.g. EXFOR Editor o Format checking tools, e.g. CHEX and JANIS o Plotting tools, e.g. ZVView and JANIS o Conversion tools (output formats), e.g. ENDVER, X4toC4 and JANIS The EXFOR format Designed for flexibility , to exchange data between centres. End ‐ user formats for processing and plotting data have recently been improved. H Henriksson EXTEND Data handling, 1 ‐ 12 Sept 08 16
Measured isotopes in EXFOR Z • Stables • EXFOR data (nat.) • EXFOR data (isotopic) N H Henriksson EXTEND Data handling, 1 ‐ 12 Sept 08 17
EXFOR basics � EXFOR is the exchange format designed to allow transmission of nuclear reaction data in the NRDC. � Data, bibliographic and experimental information is stored. • An exchange file contains a number of entries (works) further divided into subentries (data sets). The subentries are further divided into: – bibliographic, descriptive information, – common data that applies to all data in the subentry, – a data table. H Henriksson EXTEND Data handling, 1 ‐ 12 Sept 08 18
EXFOR structure BIB 001 COMMON BIB Reaction 1 22987 007 COMMON Reaction 2 DATA Reaction n Subentry ENTRY Sections Data tables Information (subwork) (work) H Henriksson EXTEND Data handling, 1 ‐ 12 Sept 08 19
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