IPAC2017 - List of Authors (Horn, J.T.)

Paper	Title	Page
THPVA083	First Tests of a Re-accelerated Beam at Heidelberg Ion-Beam Therapy Centre (HIT)	4647
	C. Schömers, E. Feldmeier, M. Galonska, Th. Haberer, J.T. Horn, A. Peters HIT, Heidelberg, Germany
	In the active raster scanning method performed at HIT since 2009, tumors are irradiated slice-by-slice by changing the extraction energy. The synchrotron provides a library of 255 different extraction-energy levels per ion type, according to the aimed penetration depth. So far, a new synchrotron cycle is started for each iso-energy-slice resulting in a non-optimal duty cycle. In order to reduce treatment time and to increase the number of patients treated per day, synchrotron cycles with several extraction flattops on different energy levels are planned. After completing one iso-energy-slice, remaining particles will be reaccelerated to the adjacent level. As a first test a new data supply model generating patterns for power supplies and RF devices with two different extraction flattops has been implemented recently. The properties of the reaccelerated beam are now under detailed examination. The reaccelerated beam was successfully extracted and guided to the experimental area. Ionization chambers along the beam line clearly show two spills on two different extraction flattops. The desired change of beam energy has been verified by range measurements in a water column.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-THPVA083
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Paper

Title

Page

First Tests of a Re-accelerated Beam at Heidelberg Ion-Beam Therapy Centre (HIT)

4647

C. Schömers, E. Feldmeier, M. Galonska, Th. Haberer, J.T. Horn, A. Peters
HIT, Heidelberg, Germany

In the active raster scanning method performed at HIT since 2009, tumors are irradiated slice-by-slice by changing the extraction energy. The synchrotron provides a library of 255 different extraction-energy levels per ion type, according to the aimed penetration depth. So far, a new synchrotron cycle is started for each iso-energy-slice resulting in a non-optimal duty cycle. In order to reduce treatment time and to increase the number of patients treated per day, synchrotron cycles with several extraction flattops on different energy levels are planned. After completing one iso-energy-slice, remaining particles will be reaccelerated to the adjacent level. As a first test a new data supply model generating patterns for power supplies and RF devices with two different extraction flattops has been implemented recently. The properties of the reaccelerated beam are now under detailed examination. The reaccelerated beam was successfully extracted and guided to the experimental area. Ionization chambers along the beam line clearly show two spills on two different extraction flattops. The desired change of beam energy has been verified by range measurements in a water column.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-THPVA083

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)