A generator of forward neutrons for ultra-peripheral collisions

Scope

Repository contains the generator class and two macros showing various usage

Building / Installation

Generator is a ROOT based class compiled on-the-fly, the macros are ment to run in ROOT. Supported versions are ROOT5 and ROOT6

Running

root runBreakup.C

This is an afterburner generator an input file with theory curves: one-arm coherent VM photoproduction cross section and invariant mass histogram, are expected. An example file for testing purposes is provided.

See/Use run macro (runBreakup.C) to execute the generator. There are two sub-functions you may use:

• runStandaloneGenerator(): This method by default runs generation of events based on the theory input.
• computeModelBreakups(): This method using the same theory input as in the previous method will produce the cross section predictions as on Fig.14 in the paper

Files:

• ENDF_Pb208.txt: Input file with photo-neutron emission spectra for Pb208
• ExampleTheory.root: Example file with theory prediction
• NeutronGenerator.h .cxx: Generator class
• runBreakup.C: ROOT macro to run the generator