--- ******************************************************************* Dr. Jilberto Zamora Saa Dzhelepov Laboratory of Nuclear Problems Joint Institute for Nuclear Research 141980 Dubna, Moscow region, Russia phone: +(496)2162589 (Office) phone: +7(915)4671294 (Mobile) email: jzamorasaa_at_jinr.ru ******************************************************************** El 25-05-2020 4:22 am, Answers escribió: > Hello > the LAM-BIAS card should have no SDUM. One has to bias the interaction > probability, not the decay probability. > The PHOTONUC card with SDUM=ELECTNUC activates nuclear reactions > induced by electrons. In order to activate nuclear reactions induced > by photons, a PHOTONUC card with a blank SDUM is needed > Regards > > > > On Sat, 23 May 2020, Jilberto Antonio Zamora Saá wrote: > >> Dear fluka expert >> >> I'm simulating 100 GeV electron beam impinging a Pb target. I'm >> interested in score neutron and energy deposited in a calorimeter >> place after the target. In order to have good accuracy, I have defined >> the corresponding PHOTONUC card, using SDUM=ELECTNUC option. Then, as >> is recommended in the fluka manual I have added a LAM-BIAS card with >> SDUM=GDECAY. >> >> >> >> The manual reads: >> >> "10) For photons, a typical reduction factor of the hadronic inelastic >> interaction length is the order of 0.01-0.05 for a shower >> initiated >> by 1 GeV photons or electrons, and of 0.1-0.5 for one at 10 >> TeV. >> For electrons and positrons, a typical reduction factor is >> about >> 5.E-4" >> >> >> According to the fluka manual, I have tried different values of >> parameter lambda-inelastic (WHAT(2)), starting from 5.E-4 as the >> manual suggests to my case. However, it was impossible to run the >> code, this takes a lot of time and then the computer becomes stuck. In >> this sense, I start to increase this value, founding that for a value >> equal to 0.6 the code works. >> >> So. I would like to ask if there is any problem choosing a value >> different from the recommended and how this fact can affect my >> results? >> >> thank you in advance. >> >> regards, >> Jilberto >> >> -- ******************************************************************* >> Dr. Jilberto Zamora Saa >> Dzhelepov Laboratory of Nuclear Problems >> Joint Institute for Nuclear Research >> 141980 Dubna, Moscow region, Russia >> phone: +(496)2162589 (Office) >> phone: +7(915)4671294 (Mobile) >> email: jzamorasaa_at_jinr.ru >> >> ******************************************************************** >> >> __________________________________________________________________________ >> You can manage unsubscription from this mailing list at >> https://www.fluka.org/fluka.php?id=acc_info >> __________________________________________________________________________ You can manage unsubscription from this mailing list at https://www.fluka.org/fluka.php?id=acc_infoReceived on Mon May 25 2020 - 16:19:26 CEST
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