Skip to content

Frametype fix for asymmetric beams #1972

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
jackal1-66 merged 1 commit into from
Apr 25, 2025
Merged

Frametype fix for asymmetric beams #1972

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
5 changes: 4 additions & 1 deletion MC/config/common/pythia8/utils/mkpy8cfg.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -102,6 +102,9 @@ def derive_process(process_in, beam_type_a, beam_type_b):
if args.eCM > 0:
fout.write('Beams:eCM = %f \n' % (args.eCM))
elif args.eA > 0 and args.eB > 0:
# Reference frame to be set to 2 if the two back-to-back beams have different energies
if args.eA != args.eB:
fout.write('Beams:frameType = 2 \n')
fout.write('Beams:eA = %f \n' % (args.eA))
fout.write('Beams:eB = %f \n' % (args.eB))
else:
Expand Down Expand Up @@ -136,7 +139,7 @@ def derive_process(process_in, beam_type_a, beam_type_b):
fout.write('\n')

### heavy ion settings (valid for Pb-Pb 5520 only)
if args.process == 'heavy_ion':
if args.process == 'heavy_ion' and (args.idA == 1000822080 and args.idB == 1000822080 and args.eCM == 5520.):
fout.write('### heavy-ion settings (valid for Pb-Pb 5520 only) \n')
fout.write('HeavyIon:SigFitNGen = 0 \n')
fout.write('HeavyIon:SigFitDefPar = 13.88,1.84,0.22,0.0,0.0,0.0,0.0,0.0 \n')
Expand Down