Status of update of G4LEND Koi, Tatsumi (SLAC) Beck, Bret (LLNL) - PowerPoint PPT Presentation

Status of update of G4LEND Koi, Tatsumi (SLAC) Beck, Bret (LLNL) Hiller, Larry (LLNL) Caleb, Mattoon (LLNL) Wright, Douglas (LLNL)

GND, GIDI and G4LEND GND: Generalized Nuclear Data New, modern structure to replace legacy nuclear data formats (e.g., ENDF-6) GIDI: General Interaction Data Interface G4LEND: Geant4 Low Energy Nuclear Data G4LEND is a package of low energy nuclear interaction model of Geant4. It is a data driven and uses data written in GND format thorugh GIDI interface. G4LEND has been in release of Geant4 since v9.5 (2011). 2

GND becomes a widely accepted prototype of new international nuclear data standard 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. • 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 .’ Goal: complete specifications by December 2015 3

How to get ENDF data in GND format http://www.nndc.bnl.gov/exfor/endf00.jsp Click GND Retrieval 1-H-1 4

How to get ENDF data in GND format Click gnd.xml ENDFBVII.1 1-H-1 data in GND format 5

Update of G4LEND Migrate recent update of GND and GIDI Introduce gamma (and other particles) as projectile New data translated from ENDF/BVII.1 has been prepared Neutrons projectile 421 nuclides, from H to Es Gamma projectile 162 nuclides, from H to Pt 6

An example of data file of this version Data file for 1-H-1 7

Validation of gamma incidence reaction gamma ¡on ¡C12 ¡ 0.1 ¡ gamma ¡ neutron ¡ 0.01 ¡ proton ¡ cross ¡sec'on ¡[barn] ¡ C12(g,3a) alpha ¡ ENDF ¡C12(G,non) ¡ 0.001 ¡ ENDF ¡C12(G,N) ¡ ENDF ¡C12(G,P) ¡ 0.0001 ¡ 0 ¡ 5 ¡ 10 ¡ 15 ¡ 20 ¡ 25 ¡ 30 ¡ 35 ¡ 40 ¡ 45 ¡ 50 ¡ energy ¡[MeV] ¡ 8

Validation of gamma incidence reaction gamma ¡on ¡C13 ¡ 0.1 ¡ gamma ¡ neutron ¡ 0.01 ¡ cross ¡sec'on ¡[barn] ¡ proton ¡ 0.001 ¡ alpha ¡ ENDF ¡C12(G,X) ¡ 0.0001 ¡ 0 ¡ 5 ¡ 10 ¡ 15 ¡ 20 ¡ 25 ¡ 30 ¡ 35 ¡ 40 ¡ 45 ¡ 50 ¡ energy ¡[MeV] ¡ 9

Validation gamma on U235 (photonNuclear and photoFission) neutron ¡produc'on ¡cross ¡sec'on ¡ n ¡from ¡photonNuclear ¡ n ¡from ¡photonFission ¡ 1.6 ¡ 1.4 ¡ 1.2 ¡ cross ¡sec'on ¡[barn] ¡ 1 ¡ 0.8 ¡ 0.6 ¡ 0.4 ¡ 0.2 ¡ 0 ¡ 0 ¡ 2.5 ¡ 5 ¡ 7.5 ¡ 10 ¡ 12.5 ¡ 15 ¡ 17.5 ¡ 20 ¡ energy ¡[MeV] ¡ 10

Summary • GND is considered as a prototype of new international nuclear data standard • Being designed by an international committee - OECD/NEA/WPEC sub-group 38 • Many ENDF data have been translated to GND • You can download them from web page • Update of G4LEND on going • Migrate to update of GND and GIDI • Validate working proto type for neutron and gamma • Hope to include coming release 11

Backup slides 12

Example of data file in current version. Data file for 1-H-1 13

Validation Particle production cross section gamma on C12 ************************************************************ *********************************************************************** ********************************** ********************************************* * G4Track Information: Particle = gamma, Track ID = 1, * G4Track Information: Particle = gamma, Track ID Parent ID = 0 = 1, Parent ID = 0 *********************************************************************** ************************************************************ ********************************** ********************************************* Step# X Y Z KineE dEStep StepLeng TrakLeng Volume Process Step# X Y Z KineE dEStep 0 0 fm 0 fm -1.88 m 15 MeV 0 eV 0 fm 0 StepLeng TrakLeng Volume Process fm World initStep 0 0 fm 0 fm -1.88 m 15 MeV 0 eV 1 0 fm 0 fm -50 cm 15 MeV 0 eV 1.38 m 0 fm 0 fm World initStep 1.38 m World Transportation 1 0 fm 0 fm -50 cm 15 MeV 0 eV 2 0 fm 0 fm -17.8 cm 0 eV 0 eV 32.2 cm 1.7 1.38 m 1.38 m World Transportation m PM_Target photonNuclear 2 0 fm 0 fm -12.7 cm 0 eV 0 eV 37.3 :----- List of secondaries ---------------- cm 1.75 m PM_Target photonNuclear gamma: energy = 1.363 MeV time = 5.66 ns gamma: energy = 871 keV time = 5.66 ns :----- List of secondaries ---------------- gamma: energy = 511.9 keV time = 5.66 ns alpha: energy = 168 keV time = 5.831 ns alpha: energy = 3.177 MeV time = 5.66 ns alpha: energy = 195.2 keV time = 5.831 ns Be8: energy = 1.696 MeV time = 5.66 ns alpha: energy = 67.68 keV time = 5.831 ns :------------------------------------------ :------------------------------------------ 14

Example of reactions gamma on 92U235 photonNucler ********************************************************************************************************* * G4Track Information: Particle = gamma, Track ID = 1, Parent ID = 0 ********************************************************************************************************* Step# X Y Z KineE dEStep StepLeng TrakLeng Volume Process 0 0 fm 0 fm -1.88 m 15 MeV 0 eV 0 fm 0 fm World initStep 1 0 fm 0 fm -50 cm 15 MeV 0 eV 1.38 m 1.38 m World Transportation 2 0 fm 0 fm -49.5 cm 0 eV 0 eV 4.54 mm 1.38 m PM_Target photonNuclear :----- List of secondaries ---------------- gamma: energy = 10.54 MeV time = 4.602 ns gamma: energy = 2.045 MeV time = 4.602 ns gamma: energy = 1.738 MeV time = 4.602 ns gamma: energy = 598.8 keV time = 4.602 ns U235: energy = 1.493 keV time = 4.602 ns :------------------------------------------ photoFission ********************************************************************************************************* * G4Track Information: Particle = gamma, Track ID = 1, Parent ID = 0 ********************************************************************************************************* Step# X Y Z KineE dEStep StepLeng TrakLeng Volume Process 0 0 fm 0 fm -1.88 m 15 MeV 0 eV 0 fm 0 fm World initStep 1 0 fm 0 fm -50 cm 15 MeV 0 eV 1.38 m 1.38 m World Transportation 2 0 fm 0 fm -50 cm 0 eV 0 eV 424 um 1.38 m PM_Target photoFission :----- List of secondaries ---------------- neutron: energy = 1.482 MeV time = 4.588 ns neutron: energy = 6.336 MeV time = 4.588 ns neutron: energy = 2.084 MeV time = 4.588 ns neutron: energy = 1.639 MeV time = 4.588 ns :------------------------------------------ 15