CYCLOTRONS2022 - List of Authors (Fanselow, T.)

Paper	Title	Page
MOPO011	Design and Operation of the New Fast Beam Chopper between Tandetron and Cyclotron	76
	T. Fanselow, J. Bundesmann, A. Denker, A. Dittwald, U. Hiller HZB, Berlin, Germany
	In collaboration with Charite - Universitätsmedizin Berlin, patients with ocular melanomas are treated with protons at Helmholtz Zentrum Berlin. Accompanying research includes beam delivery for Flash irradiation, thus it became necessary to set up a fast and reliable beam chopper. The new beam chopper can deliver much shorter pulses than needed for Flash irradiation, minimum pulse widths down to 70ns at 1kV amplitude can be delivered. A short description of the design and installation process, which occurred in 2020, and the experiences of the first 2 years of operation with the new fast beam chopper system is presented.
	Poster MOPO011 [3.738 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-CYCLOTRONS2022-MOPO011
About •	Received ※ 30 December 2022 — Revised ※ 12 January 2023 — Accepted ※ 01 February 2023 — Issue date ※ 04 July 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUBO02	Real Time Determinations of the Range and Bragg Peak of Protons with a Depth Profile Camera at HZB	126
	A. Dittwald, J. Bundesmann, A. Denker, S. Dillenardt, T. Fanselow, G. Kourkafas HZB, Berlin, Germany
	The cyclotron at HZB provides a 68 MeV proton beam for therapy as well as for experiments. By using a novel camera setup, the range of the proton beam is measured optically. The setup consists of a phantom, a luminescent layer inside and a CMOS camera. By measuring the emission of the luminescent layer, the Bragg peak and the range of the proton beam can be visualized for different energies. In contrast to a water bath, the camera system offers much shorter measurement times. A dedicated LabVIEW code offers various evaluation possibilities: the Bragg curve and the lateral beam profile are generated and displayed. The system is sensitive to energy differences of less than 400 keV. The results were obtained with a beam intensity of less than 10 pA/cm² homogenous proton beam in front of the degrader. The measurement is done in real time and provides live feedback on changes such as beam energy and beam size. The results of the camera are presented and compared to water bath measurement.
	Slides TUBO02 [3.388 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-CYCLOTRONS2022-TUBO02
About •	Received ※ 29 December 2022 — Revised ※ 24 January 2023 — Accepted ※ 09 February 2023 — Issue date ※ 20 June 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEAO04	Status of the HZB Cyclotron	159
	A. Denker, J. Bundesmann, T. Damerow, A. Dittwald, T. Fanselow, D. Hildebrand, U. Hiller, G. Kourkafas, S. Ozierenski, J. Röhrich, D. Rössink HZB, Berlin, Germany D. Cordini, J. Heufelder, S. Seidel, R. Stark, A. Weber Charite, Berlin, Germany
	For more than 20 years eye tumours are treated in collaboration with the Charité - Universitätsmedizin Berlin. The close co-operation between Charité and HZB permits joint interdisciplinary research. Irradiations with either a sharp, well focused or a broad beam, either in vacuum or in air are possible with a proton beam of 68 MeV maximum energy, or a helium beam of 90 MeV. In the past few years, we concentrated on beam delivery for FLASH experiments and the related dosimetry. Artificial lenses have been irradiated under normal and FLASH conditions to investigate possible changes in the transparency. Furthermore, radiation hardness tests solar of cells for space have been performed. A modernization project has been started in order to secure a long term and sustainable operation of our accelerator complex for therapy and research. The accelerator operation for therapy as well as on-going experiments and results will be presented.
	Slides WEAO04 [3.928 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-CYCLOTRONS2022-WEAO04
About •	Received ※ 30 December 2022 — Revised ※ 15 January 2023 — Accepted ※ 01 February 2023 — Issue date ※ 04 May 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPO011	Upgrading the Beam Diagnostic of the HZB-Cyclotron from an Analogue to a new Digital Platform	228
	J. Bundesmann, A. Denker, A. Dittwald, T. Fanselow, G. Kourkafas HZB, Berlin, Germany
	The HZB-Cyclotron delivers since a long time reliable beam for experiments and Proton Therapy. Now the old analogue beam diagnostic is outdated and hard to maintain. We developed a digital replacement for the multiplexers for 30 Faraday cups and 12 beam profile monitors. Both use as hardware platform a single-board-controller with FPGA-technology with integrated analogue and digital signals in a client-server architecture. Here we present the new features after more than one year of operation.
	Poster WEPO011 [1.061 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-CYCLOTRONS2022-WEPO011
About •	Received ※ 30 December 2022 — Revised ※ 17 January 2023 — Accepted ※ 01 February 2023 — Issue date ※ 26 March 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

Design and Operation of the New Fast Beam Chopper between Tandetron and Cyclotron

76

T. Fanselow, J. Bundesmann, A. Denker, A. Dittwald, U. Hiller
HZB, Berlin, Germany

In collaboration with Charite - Universitätsmedizin Berlin, patients with ocular melanomas are treated with protons at Helmholtz Zentrum Berlin. Accompanying research includes beam delivery for Flash irradiation, thus it became necessary to set up a fast and reliable beam chopper. The new beam chopper can deliver much shorter pulses than needed for Flash irradiation, minimum pulse widths down to 70ns at 1kV amplitude can be delivered. A short description of the design and installation process, which occurred in 2020, and the experiences of the first 2 years of operation with the new fast beam chopper system is presented.

Poster MOPO011 [3.738 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-CYCLOTRONS2022-MOPO011

About •

Received ※ 30 December 2022 — Revised ※ 12 January 2023 — Accepted ※ 01 February 2023 — Issue date ※ 04 July 2023

Cite •

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

TUBO02

Real Time Determinations of the Range and Bragg Peak of Protons with a Depth Profile Camera at HZB

126

A. Dittwald, J. Bundesmann, A. Denker, S. Dillenardt, T. Fanselow, G. Kourkafas
HZB, Berlin, Germany

The cyclotron at HZB provides a 68 MeV proton beam for therapy as well as for experiments. By using a novel camera setup, the range of the proton beam is measured optically. The setup consists of a phantom, a luminescent layer inside and a CMOS camera. By measuring the emission of the luminescent layer, the Bragg peak and the range of the proton beam can be visualized for different energies. In contrast to a water bath, the camera system offers much shorter measurement times. A dedicated LabVIEW code offers various evaluation possibilities: the Bragg curve and the lateral beam profile are generated and displayed. The system is sensitive to energy differences of less than 400 keV. The results were obtained with a beam intensity of less than 10 pA/cm² homogenous proton beam in front of the degrader. The measurement is done in real time and provides live feedback on changes such as beam energy and beam size. The results of the camera are presented and compared to water bath measurement.

Slides TUBO02 [3.388 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-CYCLOTRONS2022-TUBO02

About •

Received ※ 29 December 2022 — Revised ※ 24 January 2023 — Accepted ※ 09 February 2023 — Issue date ※ 20 June 2023

Cite •

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

WEAO04

Status of the HZB Cyclotron

159

A. Denker, J. Bundesmann, T. Damerow, A. Dittwald, T. Fanselow, D. Hildebrand, U. Hiller, G. Kourkafas, S. Ozierenski, J. Röhrich, D. Rössink
HZB, Berlin, Germany
D. Cordini, J. Heufelder, S. Seidel, R. Stark, A. Weber
Charite, Berlin, Germany

For more than 20 years eye tumours are treated in collaboration with the Charité - Universitätsmedizin Berlin. The close co-operation between Charité and HZB permits joint interdisciplinary research. Irradiations with either a sharp, well focused or a broad beam, either in vacuum or in air are possible with a proton beam of 68 MeV maximum energy, or a helium beam of 90 MeV. In the past few years, we concentrated on beam delivery for FLASH experiments and the related dosimetry. Artificial lenses have been irradiated under normal and FLASH conditions to investigate possible changes in the transparency. Furthermore, radiation hardness tests solar of cells for space have been performed. A modernization project has been started in order to secure a long term and sustainable operation of our accelerator complex for therapy and research. The accelerator operation for therapy as well as on-going experiments and results will be presented.

Slides WEAO04 [3.928 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-CYCLOTRONS2022-WEAO04

About •

Received ※ 30 December 2022 — Revised ※ 15 January 2023 — Accepted ※ 01 February 2023 — Issue date ※ 04 May 2023

Cite •

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

WEPO011

Upgrading the Beam Diagnostic of the HZB-Cyclotron from an Analogue to a new Digital Platform

228

J. Bundesmann, A. Denker, A. Dittwald, T. Fanselow, G. Kourkafas
HZB, Berlin, Germany

The HZB-Cyclotron delivers since a long time reliable beam for experiments and Proton Therapy. Now the old analogue beam diagnostic is outdated and hard to maintain. We developed a digital replacement for the multiplexers for 30 Faraday cups and 12 beam profile monitors. Both use as hardware platform a single-board-controller with FPGA-technology with integrated analogue and digital signals in a client-server architecture. Here we present the new features after more than one year of operation.

Poster WEPO011 [1.061 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-CYCLOTRONS2022-WEPO011

About •

Received ※ 30 December 2022 — Revised ※ 17 January 2023 — Accepted ※ 01 February 2023 — Issue date ※ 26 March 2023

Cite •

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