IPAC2011 - List of Authors (Palm, M.)

Paper	Title	Page
THPS081	Design Choices of the MedAustron Nozzles and Proton Gantry based on Modeling of Particle Scattering	3621
	M. Palm CERN, Geneva, Switzerland M. Benedikt, A. Fabich EBG MedAustron, Wr. Neustadt, Austria M. Palm ATI, Wien, Austria
	MedAustron, the Austrian hadron therapy center is currently under construction. Irradiations will be performed using active scanning with a proton or carbon ion pencil beam which is subject to scattering in vacuum windows, beam monitors and air gap. For applications where sharp lateral beam penumbras are required in order to spare critical organs from unwanted dose, scattering should be minimal. A semi-empirical scattering model has been established to evaluate beam size growth at the patient due to upstream scattering. Major design choices for proton gantry and nozzle based on the scattering calculations are presented.

THPS082	Dose-homogeneity Driven Beam Delivery System Performance Requirements for MedAustron	3624
	M. Palm, F. Moser CERN, Geneva, Switzerland M. Benedikt, A. Fabich EBG MedAustron, Wr. Neustadt, Austria M. Palm ATI, Wien, Austria
	MedAustron, the Austrian hadron therapy center is currently under construction. Irradiation will be performed using active scanning with proton or carbon ion pencil beams. Major beam delivery system contributors to dose heterogeneities during active scanning are evaluated: beam position, beam size and spot weight errors. Their individual and combined effect on the dose distribution is quantified, using semi-analytical models of lateral beam spread in the nozzle and target and depth-dose curves for protons and carbon ions. Deduced requirements on critical parts of the beam delivery system are presented. Preventive and active methods to suppress the impact of beam delivery inaccuracies are proposed.

THPS082	Dose-homogeneity Driven Beam Delivery System Performance Requirements for MedAustron	3624
	M. Palm, F. Moser CERN, Geneva, Switzerland M. Benedikt, A. Fabich EBG MedAustron, Wr. Neustadt, Austria M. Palm ATI, Wien, Austria
	MedAustron, the Austrian hadron therapy center is currently under construction. Irradiation will be performed using active scanning with proton or carbon ion pencil beams. Major beam delivery system contributors to dose heterogeneities during active scanning are evaluated: beam position, beam size and spot weight errors. Their individual and combined effect on the dose distribution is quantified, using semi-analytical models of lateral beam spread in the nozzle and target and depth-dose curves for protons and carbon ions. Deduced requirements on critical parts of the beam delivery system are presented. Preventive and active methods to suppress the impact of beam delivery inaccuracies are proposed.

Paper

Title

Page

Design Choices of the MedAustron Nozzles and Proton Gantry based on Modeling of Particle Scattering

3621

M. Palm
CERN, Geneva, Switzerland
M. Benedikt, A. Fabich
EBG MedAustron, Wr. Neustadt, Austria
M. Palm
ATI, Wien, Austria

MedAustron, the Austrian hadron therapy center is currently under construction. Irradiations will be performed using active scanning with a proton or carbon ion pencil beam which is subject to scattering in vacuum windows, beam monitors and air gap. For applications where sharp lateral beam penumbras are required in order to spare critical organs from unwanted dose, scattering should be minimal. A semi-empirical scattering model has been established to evaluate beam size growth at the patient due to upstream scattering. Major design choices for proton gantry and nozzle based on the scattering calculations are presented.

THPS082

Dose-homogeneity Driven Beam Delivery System Performance Requirements for MedAustron

3624

M. Palm, F. Moser
CERN, Geneva, Switzerland
M. Benedikt, A. Fabich
EBG MedAustron, Wr. Neustadt, Austria
M. Palm
ATI, Wien, Austria

MedAustron, the Austrian hadron therapy center is currently under construction. Irradiation will be performed using active scanning with proton or carbon ion pencil beams. Major beam delivery system contributors to dose heterogeneities during active scanning are evaluated: beam position, beam size and spot weight errors. Their individual and combined effect on the dose distribution is quantified, using semi-analytical models of lateral beam spread in the nozzle and target and depth-dose curves for protons and carbon ions. Deduced requirements on critical parts of the beam delivery system are presented. Preventive and active methods to suppress the impact of beam delivery inaccuracies are proposed.

THPS082

Dose-homogeneity Driven Beam Delivery System Performance Requirements for MedAustron

3624

M. Palm, F. Moser
CERN, Geneva, Switzerland
M. Benedikt, A. Fabich
EBG MedAustron, Wr. Neustadt, Austria
M. Palm
ATI, Wien, Austria

MedAustron, the Austrian hadron therapy center is currently under construction. Irradiation will be performed using active scanning with proton or carbon ion pencil beams. Major beam delivery system contributors to dose heterogeneities during active scanning are evaluated: beam position, beam size and spot weight errors. Their individual and combined effect on the dose distribution is quantified, using semi-analytical models of lateral beam spread in the nozzle and target and depth-dose curves for protons and carbon ions. Deduced requirements on critical parts of the beam delivery system are presented. Preventive and active methods to suppress the impact of beam delivery inaccuracies are proposed.