$IAEA_INDEX: 502 // IAEA website: www-nds.iaea.org/phsp/photon/ $TITLE: PHASESPACE in IAEA format for Varian Clinac iX at 6 MV $FILE_TYPE: 0 $CHECKSUM: 253604364 $RECORD_CONTENTS: 1 // X is stored ? 1 // Y is stored ? 0 // Z is stored ? 1 // U is stored ? 1 // V is stored ? 1 // W is stored ? 1 // Weight is stored ? 1 // Extra floats stored ? 2 // Extra longs stored ? 3 // ZLAST variable stored in the extrafloat array [ 0] 1 // Incremental history number stored in the extralong array [ 0] 2 // LATCH EGS variable stored in the extralong array [ 1] $RECORD_CONSTANT: 0.0000 // Constant Z $RECORD_LENGTH: 37 $BYTE_ORDER: 1234 $ORIG_HISTORIES: 99999906 $PARTICLES: 6854172 $PHOTONS: 6831572 $ELECTRONS: 21665 $POSITRONS: 935 $TRANSPORT_PARAMETERS: Global ECUT= 0.7 Global PCUT= 0.01 Global SMAX= 1e10 ESTEPE= 0.25 XIMAX= 0.5 Boundary crossing algorithm= EXACT Skin depth for BCA= 0 Electron-step algorithm= PRESTA-II Spin effects= On Brems angular sampling= KM Brems cross sections= NIST Bound Compton scattering= On Pair angular sampling= KM Photoelectron angular sampling= On Rayleigh scattering= Off Atomic relaxations= Off Electron impact ionization= Off $MACHINE_TYPE: Varian Clinac iX $MONTE_CARLO_CODE_VERSION: BEAMnrc 2009 $GLOBAL_PHOTON_ENERGY_CUTOFF: 0.01000 $GLOBAL_PARTICLE_ENERGY_CUTOFF: 0.70000 $COORDINATE_SYSTEM_DESCRIPTION: Beam axis along the Z axis, top of bremsstrahlung target at Z=0 // OPTIONAL INFORMATION $BEAM_NAME: Phase space collected at SSD 100cm $FIELD_SIZE: 2x2 cm2 at SSD 100cm $NOMINAL_SSD: $MC_INPUT_FILENAME: $VARIANCE_REDUCTION_TECHNIQUES: DBS-radius 10 cm at SSD 100cm, NBRSPL=1000, ESAVE=2 MeV everywhere except in target where it was 1 MeV. $INITIAL_SOURCE_DESCRIPTION: BEAMnrc Source 19 with monoenergetic 5.7 electrons and a spot size of FWHM=0.1 cm $PUBLISHED_REFERENCE: Report MFT-Radfys 2010:01 $AUTHORS: E. Hedin, A. Back, R. Chakarova $INSTITUTION: Sahlgrenska University Hospital, Gothenburg, Sweden $LINK_VALIDATION: $ADDITIONAL_NOTES: This is IAEA header as defined in the technical report IAEA(NDS)-0484, Vienna, 2006 $STATISTICAL_INFORMATION_PARTICLES: // Weight Wmin Wmax Emin Emax Particle 7130.27 0.001 1 1.76 0.01007 5.7 PHOTONS 21.665 0.001 0.001 1.875 0.7 5.758 ELECTRONS 0.935 0.001 0.001 2.008 0.7062 4.81 POSITRONS $STATISTICAL_INFORMATION_GEOMETRY: -29.9919 29.982 -29.9919 29.9999