Dear Paola,
Please find the answers of your questions below along with my questions associated with them for my own understanding.
What do you give exactly as initial energy? Is sqrt(s)=200 GeV, or is two times p=100GeV/c? This question comes because in your plot the average momentum at target mass is larger than 100 GeV/c.
I am always using sqrt(s) = 200 GeV. However I am wondering how either case mentioned by you is going to affect the average momentum of lighter fragments or heavier fragments ? It will be really helpful if you please explain.
Did you enable the evaporation of heavy fragments (physics 3 evaporate)?
My apologies I couldn’t understand what "physics 3 evaporate” means. For enabling Evaporation process in DPMJET the card uses different sets of arguments. The details can be found in
https://wiki.bnl.gov/eic/index.php/File:Dpmjet3_manual.rtf. I tried both with argument 1 and 3 and both gave me same results. In short argument 1 for evaporation process in DPMJet3 corresponds to standard evaporation level densities with Cook pairing energies while argument 3 corresponds to Julich A-dependent level densities.
Is your plot built with momenta as given at the exit from dpmjet, or after
evaporation?
My plot is made with final state fragments provided by DPMJet output. I guess that’s what was your question ? Please let me know if it answers your question.
Thanks
-Sourav
On Nov 3, 2014, at 3:51 PM, Paola Sala <paola.sala_at_mi.infn.it<mailto:paola.sala_at_mi.infn.it>> wrote:
Dear Sourav,
Some time is needed perform full checks and understand all details, so I
would like to ask you for a few days of patience before a real answer can
be given. A first guess could be that the behaviour is due to binding
energy losses amplified by the Lorentz boost.
One sure point is that energy and momentum are conserved within rounding
errors in every interaction.
May I ask you a couple of details to better understand your plot?
What do you give exactly as initial energy? Is sqrt(s)=200 GeV, or is two
times p=100GeV/c? This question comes because in your plot the average
momentum at target mass is larger than 100 GeV/c.
Did you enable the evaporation of heavy fragments (physics 3 evaporat)?
Is your plot built with momenta as given at the exit from dpmjet, or after
evaporation?
Thank you
Paola
Dear Fluka users,
Recently I used DPMJet with Fluka interfaced to it for simulating Au +
Au collision at C.M. energy of 200 GeV/nucleon. However the non
interacting part of Au nuclei (spectators) has average energy less than
100 GeV/nucleon which is something strange. We expect to see average
energy per nucleon for spectators as 100 GeV. As Fluka is used for
fragmentation in DPMJet so have been wondering what could be the reason
for average energy loss. I have attached a slide with the plots showing
this feature. Any comment or insight on this issue will be really
helpful.
Thanks
-Sourav
Paola Sala
INFN Milano
tel. Milano +39-0250317374
tel. CERN +41-227679148
Received on Tue Nov 04 2014 - 13:00:34 CET