A dynamic collimation and alignment system for the Helmholtz linear accelerator

Lauber, Simon; Aulenbacher, K.; Barth, W.; Basten, Markus; Burandt, Christoph; Dziuba, Florian; Forck, P.; Gettmann, Viktor; Heilmann, Manuel; Kürzeder, Thorsten; List, Julian; Miski-Oglu, Maksym; Podlech, Holger; Rubin, Anna; Schwarz, Malte; Sieber, T.; Yaramyshev, Stepan

doi:10.1063/5.0069824

Cited by 6 publications

(4 citation statements)

References 45 publications

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“…Together with the results already achieved in the performance of the prototype, the promising beam dynamic design and the significant energy savings due to the use of superconducting RF technologies, the HELIAC is of general interest to the accelerator community. The upcoming extended beam test with the first fully equipped cryomodule CM1 [35][36][37][38][39] will take place in 2023 and will pave the way for the realization of the entire HELIAC.…”

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.

Self Cite

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“…Among several GSI linac projects [16][17][18][19][20][21][22][23], one of the most important ones is an upgrade of UNILAC for FAIR. After an exchange of the HSI-RFQ rods and the re-definition of its working point, the full spectrum of ions can be accelerated again, after a five years interruption.…”

Section: Discussionmentioning

confidence: 99%

High current heavy ion beam investigations at GSI-UNILAC

Vormann

Barth

Miski-Oglu

et al. 2023

J. Phys.: Conf. Ser.

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The GSI Universal Linear Accelerator UNILAC and the synchrotron SIS18 will serve as injector for the upcoming FAIR-facility. The UNILAC-High Current Injector will be improved and modernized until FAIR is commissioned and the Alvarez post stripper accelerator is replaced. The reference heavy ion for future FAIR-operation is uranium, with highest intensity requirements. To re-establish uranium beam operation and to improve high current beam operation, different subjects have been explored in dedicated machine investigation campaigns. After a beam line modification in 2017 the RFQ-performance had deteriorated significantly; new rods have been installed and the RF-working point has been redefined. Also the Superlens-performance had become unsatisfactory; improved with a modified RF-coupler. With a pulsed hydrogen gas stripper target the uranium beam stripping efficiency could be increased by 65%. Various work has already been carried out to establish this stripper device in routine operation. With medium heavy ion beams a very high beam brilliance at the end of transfer line to SIS18 was achieved. Results of the measurement campaigns and the UNILAC upgrade activities will be presented.

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“…Such a machine provides for a significantly increased rate of SHE production, offering the beam for physics experiments with a smoothly varied output particle energy from 3.5 to 7.3 MeV/u. In accordance with the linac layout, a heavy ion beam with the design mass to charge ratio of A/q = 6 could be accelerated by twelve multi-gap CH cavities [44][45][46][47].…”

Section: Superconducting Continuous Wave Heavy Ion 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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A dynamic collimation and alignment system for the Helmholtz linear accelerator

Cited by 6 publications

References 45 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

High current heavy ion beam investigations at GSI-UNILAC

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

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