Post on 31-Dec-2015
description
Christmas developmentof the BME event generator
F. Cerutti
in collaboration with
A. Mairani (INFN-HIT),A. Ferrari, F. Sommerer
FLUKA user meeting CERN January 31st 2007
FLUKA user meetingFrancesco Cerutti CERN, January 31st 2008
BME – The interfaced code
FLUKA user meetingFrancesco Cerutti CERN, January 31st 2008
BME –Peripheral collisions
FLUKA user meetingFrancesco Cerutti CERN, January 31st 2008
“Closed” issue on the peripheral collision side !
quite significant underestimation of production cross sectionfor isotopes close to projectile or target
12C+12C @ 86 MeV/n(11C) ~ 1 mb
FLUKA user meetingFrancesco Cerutti CERN, January 31st 2008
Implemented developments
relaxation of the geometrical radius
PL, TL chosen according to
[d/dcm ~ exp(-kcm)
pPL, pTL chosen according to
a uniform energy loss distribution over a given interval
FLUKA user meetingFrancesco Cerutti CERN, January 31st 2008
Results [I]12C+12C @ 86 MeV/nBME(11C) = 81 mb
RQMD(11C) = 215 mb
FLUKA user meetingFrancesco Cerutti CERN, January 31st 2008
Benchmarking [I]12C+12C @ 86 MeV/n
exp data from H. Ryde, Physica Scripta Vol. T5, 114-117, 1983
2o < LAB < 22o TLAB > 10 MeV/n
exp data from H. Ryde, Physica Scripta Vol. T5, 114-117, 1983
2o < LAB < 22o TLAB > 10 MeV/n
FLUKA user meetingFrancesco Cerutti CERN, January 31st 2008
RQMD angular distribution
FLUKA user meetingFrancesco Cerutti CERN, January 31st 2008
Benchmarking [II]12C+9Be @ 86 MeV/n
exp data from H. Ryde, Physica Scripta Vol. T5, 114-117, 1983
2o < LAB < 22o TLAB > 10 MeV/n
FLUKA user meetingFrancesco Cerutti CERN, January 31st 2008
Results [II]
FLUKA user meetingFrancesco Cerutti CERN, January 31st 2008
BME – The database for the pre-equilibrium emissions
16O + 6Li, 8Li, 8B, 10B, 12C, 14N, 16O, 19F, 20Ne, 24Mg, 27Al
12C + 8Li, 8B, 12C, 27Al
@ 12, 30, 50, 70, 100 MeV/n
FLUKA user meetingFrancesco Cerutti CERN, January 31st 2008
Undertaken issues on the CF side
(extension of the database)
evidence of too hard (pre-equilibrium) neutron spectraat high incident energies
extrapolation of parametersfor systems not included in the database
FLUKA user meetingFrancesco Cerutti CERN, January 31st 2008
Treatment of transfer reactions
deep overlap and full inclusion cases addressed
This way events ofCOMPLETE FUSION because ofan impact parameter too lowhave been avoided
for 16O+197Au @ 94 MeV/nCF was pushed from 4%R (estimated) to
45%R
excitation energy sharing
FLUKA user meetingFrancesco Cerutti CERN, January 31st 2008
Complete fusion for wild systems
total multiplicity @ 12, 30, 50, 70, 100 MeV/n
angular distributions