IPAC2021 - List of Authors (Heufelder, J.)

Paper	Title	Page
MOPAB419	Acceleration and Measurement of Alpha Particles and Hydrogen Molecular Ions with the HZB Cyclotron	1264
	G. Kourkafas, J. Bundesmann, A. Denker, T. Fanselow, J. Röhrich HZB, Berlin, Germany J. Heufelder, A. Weber Charite, Berlin, Germany
	The HZB cyclotron has treated more than 4000 patients with eye tumors using protons. The accelerator can also provide heavier ions which could be suitable for ocular radiation therapy. Helium ions exhibit less lateral spread, increased relative biological effectiveness and a sharper Bragg-Peak compared to protons of the same range, while minimizing nuclear fragmentation and thus excessive dose downstream the irradiated volume compared to more heavy ions. When accelerating fully stripped helium ions (alpha particles), hydrogen molecular ions can also be accelerated to the same energy with a small tuning of the machine due to having almost the same mass-to-charge ratio, yielding a proton beam of double current after the beam exits the vacuum window towards the target. The acceleration and characterization of these two ion species are described in this paper, suggesting the feasibility of a corresponding clinical cyclotron for ocular or even deep-seated tumors.
	Poster MOPAB419 [0.806 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-MOPAB419
About •	paper received ※ 19 May 2021 paper accepted ※ 09 June 2021 issue date ※ 13 August 2021
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

Acceleration and Measurement of Alpha Particles and Hydrogen Molecular Ions with the HZB Cyclotron

1264

G. Kourkafas, J. Bundesmann, A. Denker, T. Fanselow, J. Röhrich
HZB, Berlin, Germany
J. Heufelder, A. Weber
Charite, Berlin, Germany

The HZB cyclotron has treated more than 4000 patients with eye tumors using protons. The accelerator can also provide heavier ions which could be suitable for ocular radiation therapy. Helium ions exhibit less lateral spread, increased relative biological effectiveness and a sharper Bragg-Peak compared to protons of the same range, while minimizing nuclear fragmentation and thus excessive dose downstream the irradiated volume compared to more heavy ions. When accelerating fully stripped helium ions (alpha particles), hydrogen molecular ions can also be accelerated to the same energy with a small tuning of the machine due to having almost the same mass-to-charge ratio, yielding a proton beam of double current after the beam exits the vacuum window towards the target. The acceleration and characterization of these two ion species are described in this paper, suggesting the feasibility of a corresponding clinical cyclotron for ocular or even deep-seated tumors.

Poster MOPAB419 [0.806 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-MOPAB419

About •

paper received ※ 19 May 2021 paper accepted ※ 09 June 2021 issue date ※ 13 August 2021

Export •

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