Let's generate some new gauge bosons Z', with mass 30 TeV, at the 100 TeV FCCpp. 

> cd /home/potter/pythia8235/
> mkdir fccpp
> cp lhc/mainLHC.cc fccpp/mainFCC.cc
> cp lhc/Makefile* fccpp
> cd fccpp

Now edit the Makefile to include your new mainFCC project:

# HEPMC2.
mainFCC mainLHC mainTevatron ...

Open up the mainFCC.cc and edit it to generate 100 events, include the following, and delete all else:

  HepMC::IO_GenEvent ascii_io("zprime_fccpp.hepmc", std::ios::out);
  Pythia pythia;
  pythia.readString("Next:numberShowProcess=10");
  pythia.readString("Beams:eCM = 100000.");
  pythia.readString("NewGaugeBoson:ffbar2gmZZprime=on");
  pythia.readString("Zprime:gmZmode=3");
  pythia.readString("32:m0=30000.");

Now make and run:

> make mainFCC
> ./mainFCC | tee fcc.log

Check the fcc.log file to see what the typical energies of the bosons are. Now copy the .hepmc file to your Delphes directory and run the simulation using the fcchh.tcl cards provided with Delphes:

> cp zprime_fccpp.hepmc /home/potter/Delphes-3.4.1
> cd /home/potter/Delphes-3.4.1
> ./DelphesHepMC cards/FCC/FCChh.tcl zprime_fccpp.hepmc.delphes.root zprime_fccpp.hepmc
> root -l zprime_fccpp.hepmc.delphes.root
> root [1] TBrowser b

Check some basic distributions like electron, muon and jet pt. Yikes! Those are some energetic objects from Z'->e+e-,mu+mu- and qqbar. The mean jet pt is 2 TeV, and I see a 16 TeV jet!