ESTRO 2023 - Abstract Book

S1508

Digital Posters

ESTRO 2023

Conclusion In this preliminary study, dosimetric characterization of an in-house developed minibeam collimator for preclinical MBRT could be accomplished using ion chamber in combination with GC films, adapting methodologies in use for small field dosimetry in external radiotherapy.

PO-1786 concrete activation-concentrations in a high energy medical accelerator bunker: a case study

M. van Hinsberg 1

1 ZRTI, Klinische Fysica, Vlissingen, The Netherlands

Purpose or Objective Euratom directives implemented in Dutch regulations ask for special attention to all kinds of sources of radioactive waste, accumulated during the life-time of a high energy accelerator facility. Neutrons created by high energy photons in the head of LINAC will active the concrete shielding (neutron capture). Clearance levels for radioactive waste depend on the activation concentration for each radio-isotope present. The objective of this case-study is to estimate the order of