HIAT2022 - List of Authors (Maier, M.T.)

Paper	Title	Page
MO3I3	Heavy Ion Stripping	24
	P. Gerhard, M.T. Maier GSI, Darmstadt, Germany
	Ion stripping is primarily an essential technique for heavy ion accelerators in order to reach higher beam energies within reasonable size and budget limits. Due to the nature of the stripping process, the resulting ion beam contains ions of different charge states. Therefore, high beam loss is typically associated, making the net stripping efficiency one of the decisive elements of the overall performance of an accelerator or facility. Several technical implementations of strippers have been and are still being developed in order to obtain optimal stripping for different ions and beam energies by employing different kinds of stripping targets, namely gaseous, solid and more recently fluid materials. High beam intensities resulting in prohibitive energy deposition and target destruction are challenging. Optimizing a stripper may potentially increase the overall performance by a large factor with less effort than other actions. This gave rise to the pulsed gas stripper project at the GSI UNILAC. This talk will give an overview of different strippers at GSI and beyond. The second part will give a detailed report on the introduction of hydrogen at the GSI gas stripper.
	Slides MO3I3 [53.513 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-HIAT2022-MO3I3
About •	Received ※ 21 June 2022 — Accepted ※ 01 July 2022 — Issue date ※ 10 August 2022
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TU3C3	Preparation of Low-Energy Heavy Ion Beams in a Compact Linear Accelerator/Decelerator	63
	Z. Andelkovic, S. Fedotova, W. Geithner, P. Gerhard, F. Herfurth, I. Kraus, M.T. Maier, A. Reiter, G. Vorobyev GSI, Darmstadt, Germany N.S. Stallkamp IKF, Frankfurt am Main, Germany
	High precision tests of fundamental theories can often unfold their full potential only by using highly charged ions (HCI) at very low energies. Although in light of the envisaged energies at FAIR, experiments in the keV to MeV range may sound like backpedaling, these two techniques are in fact complementary, since the production of heavy HCI is virtually impossible without prior acceleration and electron stripping. However, subsequent preparation, transport, storage and detection of low-energy HCI bring new, surprising sets of problems and limitations. Here we will give an overview of the CRYRING@ESR local injector and the HITRAP linear decelerator. These two facilities consist out of one or two accelerator or decelerator stages, with a total length of around 10 meters, making them "compact" in comparison to other GSI accelerators. The following sections describe their main design parameters, the achieved ion numbers, challenges of beam detection, as well as some special features such as multi-turn injection and single-shot energy analyzers. The conclusion will present the current status and will also give an outlook of the planned applications of low-energy ions at the FAIR facility.
	Slides TU3C3 [3.244 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-HIAT2022-TU3C3
About •	Received ※ 20 June 2022 — Revised ※ 01 July 2022 — Accepted ※ 01 July 2022 — Issue date ※ 10 August 2022
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

Heavy Ion Stripping

24

P. Gerhard, M.T. Maier
GSI, Darmstadt, Germany

Ion stripping is primarily an essential technique for heavy ion accelerators in order to reach higher beam energies within reasonable size and budget limits. Due to the nature of the stripping process, the resulting ion beam contains ions of different charge states. Therefore, high beam loss is typically associated, making the net stripping efficiency one of the decisive elements of the overall performance of an accelerator or facility. Several technical implementations of strippers have been and are still being developed in order to obtain optimal stripping for different ions and beam energies by employing different kinds of stripping targets, namely gaseous, solid and more recently fluid materials. High beam intensities resulting in prohibitive energy deposition and target destruction are challenging. Optimizing a stripper may potentially increase the overall performance by a large factor with less effort than other actions. This gave rise to the pulsed gas stripper project at the GSI UNILAC. This talk will give an overview of different strippers at GSI and beyond. The second part will give a detailed report on the introduction of hydrogen at the GSI gas stripper.

Slides MO3I3 [53.513 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-HIAT2022-MO3I3

About •

Received ※ 21 June 2022 — Accepted ※ 01 July 2022 — Issue date ※ 10 August 2022

Cite •

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

TU3C3

Preparation of Low-Energy Heavy Ion Beams in a Compact Linear Accelerator/Decelerator

63

Z. Andelkovic, S. Fedotova, W. Geithner, P. Gerhard, F. Herfurth, I. Kraus, M.T. Maier, A. Reiter, G. Vorobyev
GSI, Darmstadt, Germany
N.S. Stallkamp
IKF, Frankfurt am Main, Germany

High precision tests of fundamental theories can often unfold their full potential only by using highly charged ions (HCI) at very low energies. Although in light of the envisaged energies at FAIR, experiments in the keV to MeV range may sound like backpedaling, these two techniques are in fact complementary, since the production of heavy HCI is virtually impossible without prior acceleration and electron stripping. However, subsequent preparation, transport, storage and detection of low-energy HCI bring new, surprising sets of problems and limitations. Here we will give an overview of the CRYRING@ESR local injector and the HITRAP linear decelerator. These two facilities consist out of one or two accelerator or decelerator stages, with a total length of around 10 meters, making them "compact" in comparison to other GSI accelerators. The following sections describe their main design parameters, the achieved ion numbers, challenges of beam detection, as well as some special features such as multi-turn injection and single-shot energy analyzers. The conclusion will present the current status and will also give an outlook of the planned applications of low-energy ions at the FAIR facility.

Slides TU3C3 [3.244 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-HIAT2022-TU3C3

About •

Received ※ 20 June 2022 — Revised ※ 01 July 2022 — Accepted ※ 01 July 2022 — Issue date ※ 10 August 2022

Cite •

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