SHIELD-HIT12A is a Monte Carlo particle transport program which is modified for proton and heavy ion particle therapy reserach. It was forked from SHIELD-HIT in 2008 with the aim to modernize and implement new features, increasing the applicability for medical physics.

17th May 2023: Release v1.0.1

Bugfix update, highlights:

  • Bugfix: loading external sobp.dat files did not override BEAMSIGMA card. (#429)
  • Rename SAD card to BEAMSAD. Improve documentation about BEAMSAD card. (#430).

See the ChangeLog for details.


Current Developers

  • Niels Bassler
  • Leszek Grzanka
  • Nikolai Sobolevsky


Previous Contributors

  • David C. Hansen
  • Armin Lühr
  • Toke Printz
  • Vicki Trier Taasti
  • Bjarne Thomsen



This work was partially supported by funds from the Danish Cancer Society and NovoNordisk Fonden.