High brilliance beam investigations at the universal linear accelerator

Barth, W.; Scheeler, U.; Vormann, H.; Miski-Oglu, Maksym; Vossberg, Markus; Yaramyshev, Stepan

doi:10.1103/physrevaccelbeams.25.040101

Cited by 8 publications

(6 citation statements)

References 16 publications

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“…The GSI UNILAC will be upgraded to supply the FAIR facility currently under construction with short high-intensity heavy ion pulses [25][26][27][28][29][30][31]. In future, the HELIAC will then meet the requirements of users, including those from SHE research, for long pulses with the highest possible power density.…”

Section: Discussionmentioning

confidence: 99%

Advanced basic layout of the HElmholtz LInear Accelerator for cw heavy ion beams at GSI

Barth,

Basten,

Burandt

et al. 2024

J. Phys.: Conf. Ser.

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The design and construction of continuous wave (cw) high intensity linacs is a crucial goal of worldwide accelerator technology development. The standalone sc heavy ion linac HELIAC (HElmholtz LInear ACcelerator) is a common project of GSI Helmholtz Centre for Heavy Ion Research and Helmholtz Institute Mainz (HIM) under key support of Goethe University Frankfurt (IAP). In 2017 the first section of the linac has been successfully commissioned and extensively tested with beam at GSI, featuring the capability of 216.816 MHz multi-gap Crossbar H-mode (CH) DTL-structures. At present, the first fully equipped cryomodule of the HELIAC is under construction. In addition, six further superconducting CH cavities are being procured. The HELIAC beam dynamics concept foresees a total of twelve CH-cavities in order to accelerate ions with a mass-to-charge ratio of 6 up to an energy of 7.5 MeV/u. In this paper, an advanced very compact and less complex layout is presented, where the same number of accelerating cavities can be accommodated in three instead of four cryomodules, thus also reducing the number of solenoids and rebunchers. In addition, the integration and linking of the HELIAC to the GSI accelerator UNILAC will be outlined.

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Section: Discussionmentioning

confidence: 99%

Advanced basic layout of the HElmholtz LInear Accelerator for cw heavy ion beams at GSI

Barth,

Basten,

Burandt

et al. 2024

J. Phys.: Conf. Ser.

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“…After beam stripping and charge state separation, the Alvarez DTL provides for beam acceleration without significant particle loss for the beam energy up to 11.4 MeV/u. The transfer line (TK) to the synchrotron SIS18 is equipped with a foil stripper and another charge state separator system [36]. Additionally, highly charged heavy ion beams are provided by the high charge state injector (HLI), accelerated to 1.4 MeV/u and, by means of a special bending section, injected into the main UNILAC beamline [37].…”

Section: Unilac As a Heavy Ion High Current Linacmentioning

confidence: 99%

DYNAMION—A Powerful Beam Dynamics Software Package for the Development of Ion Linear Accelerators and Decelerators

et al. 2023

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Numerous ambitious particle accelerator facilities, based on proton and ion linear accelerators, have recently been in development for fundamental research, as well as for industrial applications. The advanced design of such new machines, as well as the upgrade and optimization of existing linacs, requires adequate, precise and reliable tools to simulate beam dynamics. The software package DYNAMION, created about 30 years ago, is undergoing systematic improvement and further development in order to characterize modern ion linacs and to provide solutions for its intrinsic complex problems. The DYNAMION code features Front to End beam dynamics simulations under space charge conditions in a linac system, comprising an arbitrary sequence of accelerating-focusing structures and beam transport lines. The evolution of a macroparticle ensemble could be analyzed at a high level of specification. A 3D distribution of the external electrical field (RFQ, DTL) is modeled using integrated internal solvers. Optionally, a 3D electromagnetic field mapping, supplied by specialized external codes, could be used. The recent status of the DYNAMION software package is presented in this paper. Furthermore, the performance of the code is demonstrated on the basis of its application for various linear accelerator/decelerator projects.

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“…In this article, we propose a simple method to considerably improve the performance of the gas stripper setup at the GSI Universal Linear Accelerator (UNILAC) in Germany. A detailed description of the design and operation of the GSI gas stripper reader can be found elsewhere, for example, in [4][5][6][7][8][9][10][11][12][13][14], as well as links between them. Therefore, in this article, we provide only a short description.…”

Section: Introductionmentioning

confidence: 99%

How Simply One Can Considerably Improve Performance of the Gas Stripper at the GSI UNILAC (Proposal)

Varentsov

2024

Preprint

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Here we propose a simple way in which one can considerably improve performance of the gas stripper setup at the GSI UNILAC. To do so, it will be enough to replace inside the main GSI stripper chamber the present nozzle and the short windowless storage gas cell (for pulsed gas-jet operation mode) by a simple conical diverging nozzle combined with a gas catcher tube placed on the axis of gas-jet at some distance downstream the nozzle exit. As a result, the background pressure in the main and differentially pumped adjacent vacuum chambers of the gas stripper at the GSI UNILAC will dramatically reduce, and it will make possible to achieve the required optimal thickness of gas targets. The pulsed gas stripper operation is simply realized by implementing a commercially available fast gas valve connected to the nozzle entrance. Moreover, the ion beam pulses repetition rate can be increased and it will allow for the considerably higher average intensity of the ion beams extracted from the GSI UNILAC. Performance of the proposed GSI UNILAC gas stripper modification we explored by means of detailed computer experiments, which give a realistic description of supersonic gas jets flowing out the nozzle into vacuum. Results of these computer experiments have presented and discussed.

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High brilliance beam investigations at the universal linear accelerator

Cited by 8 publications

References 16 publications

Advanced basic layout of the HElmholtz LInear Accelerator for cw heavy ion beams at GSI

Advanced basic layout of the HElmholtz LInear Accelerator for cw heavy ion beams at GSI

DYNAMION—A Powerful Beam Dynamics Software Package for the Development of Ion Linear Accelerators and Decelerators

How Simply One Can Considerably Improve Performance of the Gas Stripper at the GSI UNILAC (Proposal)

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