Verification of Monte Carlo transport codes against measured small angle p-, d-, and t-emission in carbon fragmentation at 600 MeV/nucleon

TL;DR

This paper evaluates the accuracy of four Monte Carlo transport codes in predicting small-angle hydrogen isotope emission spectra from carbon fragmentation at 600 MeV/nucleon, finding INCL++ performs best.

Contribution

It provides a detailed comparison of Monte Carlo models against experimental data for carbon fragmentation, highlighting INCL++'s superior predictive capability.

Findings

INCL++ closely matches experimental spectra.

Significant discrepancies observed in some models at high momentum.

Data spans a wide range of differential cross sections.

Abstract

Momentum spectra of hydrogen isotopes have been measured at 3.5 deg from C12 fragmentation on a Be target. Momentum spectra cover both the region of fragmentation maximum and the cumulative region. Differential cross sections span five orders of magnitude. The data are compared to predictions of four Monte Carlo codes: QMD, LAQGSM, BC, and INCL++. There are large differences between the data and predictions of some models in the high momentum region. The INCL++ code gives the best and almost perfect description of the data.