7th FLUKA Course NEA Paris, Sept.29-Oct.3, 2008

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7th FLUKA Course NEA Paris, Sept.29-Oct.3, 2008 Exercise 1 7th FLUKA Course NEA Paris, Sept.29-Oct.3, 2008

Ex #1 Proton beam impinging on a cylinder of pre-def material Get the source example files from the course website http://www.cern.ch/fluka-course/nea2008 Download all the ex1*.inp files to ~/work/ex1 directory Different input formats: ex1.inp fixed card format free geometry format (RECOMMENDED) ex1free.inp free card format free geometry format obsolete (but supported) ex1fix.inp fixed card format fixed geometry format (DEFAULT) ex1double.inp fixed card format high-accuracy fixed geometry format ex1fixfree.inp free card format fixed geometry format

Ex #1 run ex1.inp in the ex1 dir $$FLUPRO/flutil/rfluka –N0 –M4 ex1 & look at the .out file $emacs [or any editor] ex1001.out & find the inelastic scattering length for beam particles in the target convert the beam momentum spread into energy spread (in MeV) determine how many primaries are needed to have a run (with 4 cycles) lasting in total as many minutes as the number of neutrons of the 6He’s isotope find the fraction of energy leaving the system calculate the power leaving the system for a beam current of 4mA (in S.I. units)