TY  - JOUR
AU  - Holm, Kim Marina
AU  - Jaekel, Oliver
AU  - Krauss, Achim
TI  - Direct determination ofkQfor Farmer-type ionization chambers in a clinical scanned carbon-ion beam using water calorimetry.
JO  - Physics in medicine and biology
VL  - 67
IS  - 4
SN  - 0031-9155
CY  - Bristol
PB  - IOP Publ.
M1  - DKFZ-2022-00182
SP  - 049401
PY  - 2022
N1  - Phys. Med. Biol. 67 (2022) 049401
AB  - Within two studies, kQ factors for two Farmer-type ionization chambers have been experimentally determined by means of water calorimetry in the entrance channel (EC) of a monoenergetic carbon-ion beam [1] and for a passively modulated spread-out Bragg peak (SOBP) [2]. Both studies were performed at the Heidelberg Ion Beam Therapy Center (HIT) using the PTB portable water calorimeter but applying different initial beam energies of 429 MeV/u for the EC and 278 MeV/u for the SOBP as well as different scanning patterns of the irradiated eld. Comparing their results revealed differences between the experimental kQ factors of up to 1.9
KW  - SOBP (Other)
KW  - carbon-ion beams (Other)
KW  - entrance channel (Other)
KW  - kQ factors (Other)
KW  - water calorimetry (Other)
LB  - PUB:(DE-HGF)16
C6  - pmid:35086066
DO  - DOI:10.1088/1361-6560/ac4fa0
UR  - https://inrepo02.dkfz.de/record/178653
ER  -