cascade is hosted by Hepforge, IPPP Durham

Hadron level Monte Carlo generator for ep and pp scattering applying Transverse Momentum Dependent (TMD) parton densities and parton shower.

The Monte Carlo program CASCADE generates a full hadron event record according to the HEP common standards.

CASCADE was originally intended for small x processes and used only gluon chains in the initial state cascade.

With the development of the Parton Branching TMDs, which are valid over a large range in x and Q2, new developments were possible in CASCADE3:

CASCADE3 (apart from the older features) makes use of LHE files (either from collinear NLO calculations like MC@NLO or off-shell calculations from KaTie/Pegasus) and has a full flavor initial state parton shower, which follows directly the TMD from the Parton Branching method.

Different sets of TMDs are now accessed via TMDlib.

posted Jan 7, 2023

Version 3.3.2 of CASCADE3 (April 2023)

This release includes output of event record in HepMC2 and HepMC3 format. Optional hadronization via Pythia8 (instead of Pythia6). A Rivet interface is included (thanks to A. Verbytskyi).

The new manual has been published in EPJC, please use this reference to cite

A history of changes and updates is here. A installation guide is distributed in the download

Older versions can be found on here

The original (old) manual has been published in EPJC, please use this reference to cite

To receive announcements of new releases for CASCADE, send an email to Hannes Jung

Credits and Blame

Many people have contributed to the functionality and stability of CASCADE, especially from the HERA experiment H1 and ZEUS, where the program is extenively used.

A. Verbytskyi (MPI) helped in updating CASCADE for hepmc3 and did cmake installation option.

Contributions to the physics in CASCADE were provided by S. Baranov (LPI), J. Bartels (Uni Hamburg), M. Deak (DESY), G. Salam (IN2P3), N. Zotov (MSU)