The GEANT-FLUKA interface

Since version 3.15, GEANT includes an interface with some FLUKA [,,,,,,] routines. This part has been updated and extended in subsequent releases.

FLUKA is a standalone code with its own life. Only a few parts have been included into GEANT, namely the ones dealing with hadronic elastic and inelastic interactions.

The implementation of FLUKA routines in GEANT does not include any change, apart from interface ones and those agreed by the FLUKA authors. Whenever different options are available in FLUKA, the one suggested by the authors have been retained. Nevertheless the results obtained with FLUKA routines inside GEANT could not be representative of the full FLUKA performances, since they generally depend on other parts which are GEANT specific.

The routines made available for GEANT have been extensively tested and are reasonably robust. They usually do not represent the latest FLUKA developments, since the policy is to supply for GEANT well tested and reliable code rather than very recent developments with possibly better physics but also still undetected errors.

It is important that GEANT users are aware of the conditions at which this code has been kindly made available:

• relevant authorship and references about FLUKA [,,,,,,] should be clearly indicated in any publication reporting results obtained with this code;
• the FLUKA authors reserve the right of publishing about the physical models they developed and implemented inside FLUKA, GEANT users are not supposed to extract from the GEANT- FLUKA code the relevant routines running them standalone for benchmarks;
• more generally, FLUKA routines contained in the GEANF file are supposed to be included and used with GEANT only: any other use must be authorised by the FLUKA authors.