Reference beam dynamics layout for the SC CW heavy ion HELIAC at GSI

Schwarz, Malte; Yaramyshev, Stepan; Aulenbacher, K.; Barth, W.; Basten, Markus; Busch, M.; Burandt, Christoph; Conrad, Thorsten; Dziuba, Florian; Gettmann, Viktor; Гусарова, М. А.; Heilmann, Manuel; Khabibullina, E. R.; Kulevoy, T. V.; Kuerzeder, T.; Lauber, Simon; List, Julian; Miski-Oglu, Maksym; Podlech, Holger; Polozov, S. M.; Rubin, Anna; Taletskiy, Kirill; Ziiatdinova, A. V.

doi:10.1016/j.nima.2019.163044

Cited by 12 publications

(8 citation statements)

References 26 publications

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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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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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“…There are several components to further advance the nuclear spectroscopy opportunities for the heaviest elements. With the Lund group being engaged in the superheavy element research programme at GSI/FAIR, the new superconducting continuous-wave heavy-ion linear accelerator HELIAC [99] is going to deliver an increase in ion-beam rate and thus superheavy element production and observation rate. Provided that actinide targets can withstand the ion-beam related heating, also an increase in their thickness beyond 1 mg/cm 2 might become an option.…”

Section: From Tasispec To Lundiummentioning

confidence: 99%

Results and plans for nuclear spectroscopy of superheavy nuclei: the Lund perspective

Rudolph

2022

Eur. Phys. J. A

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A survey of nuclear structure results obtained along $$\alpha $$ α -decay chains stemming from isotopes of element 114, Fl, and element 115, Mc, is presented. Measures taken to ensure a reliable hand-over of nuclear spectroscopy output to nuclear structure theory are outlined. Possible links between decay chains starting from element 117, Ts, and element 115, Mc, are commented on. The experiments were conducted with the TASISpec set-up placed in the focal plane of the TASCA separator at the GSI Helmholtzzentrum für Schwerionenforschung GmbH in Darmstadt, Germany. Plans to improve the decay-spectroscopy set-up towards future superheavy endeavours are described.

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“…The initial design goals (𝐸 acc = 5 MV/m at 𝑄 0 = 2 × 10 8 ) have been exceeded, a maximum accelerating gradient of 𝐸 acc = 9.6 MV/m at 𝑄 0 = 8.14 × 10 8 has been achieved (figure 1, right) [7]. Another step paving the way to HELIAC was realized within the development of the Advanced Demonstrator (CM1) concept [8,9]. For CM1 two structurally identical CH-cavities (CH1 and CH2) with 𝛽 geom.…”

Section: Superconducting Rf-cavities Developments For Heavy Ion Cw-be...mentioning

confidence: 99%

LINAC developments for heavy ion operation at GSI and FAIR

Barth¹,

Hollinger²,

Adonin³

et al. 2020

J. Inst.

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The first cavity of a standalone superconducting (sc) continuous wave (cw) heavy ion Linac as a demonstration of the capability of 217 MHz multi gap Crossbar H-mode structures (CH) has been already commissioned at high acceleration gain. The worldwide first beam test with a superconducting multi gap CH-cavity was a milestone of the R&D work of HIM and GSI in collaboration with Goethe University Frankfurt (GUF) in preparation of the sc cw heavy ion Linac project, substituting GSI-UNILAC as a heavy ion high duty factor Linac. Recently the first two of four fully equipped cw-Linac cryomodules are in procurement. To meet the future FAIR science requirements higher beam intensity has to be achieved in the present GSI-accelerator complex. In the last years ion source developments, in particular for the high current Vacuum Arc Ion Sources (VARIS), were concentrated on heavy elements, as Bi and Pb, aiming for stable routine ion source operation at a sufficient rep. rate and high production efficiency. Stripping is a key technology for all heavy ion accelerators. After upgrade of the supersonic N 2 -gas jet implementation of high current foil stripping, recently a new H 2 gas cell, using a pulsed gas regime synchronized with arrival of the beam pulse has been developed. An enhanced stripper gas density as well as a simultaneously reduced gas load results in an increased stripping efficiency, while the beam emittance remains the same. A new record beam intensity (11.1 emA) for 238 U 28+ beams at 1.4 MeV/u has been achieved, applying the pulsed high density H 2 -stripper target to a high intensity 238 U 4+ beam from the VARIS ion source. Further ion source developments have been accomplished recently providing for sufficient heavy ion beam intensities at the High Current Injector Linac. A machine investigation program has been performed in 2020. The focus was to optimize the entire FAIR injector chain for high intensity heavy ion beam after the successful implementation of different upgrade measures. Besides a dedicated operation mode applying UNILAC, as a heavy ion Linac, at a synchronous phase significantly lower than 30 degrees for high intensity proton beam, could be established. Thus, UNILAC is able to deliver a sufficient proton beam intensity for the FAIR commissioning phase, when the FAIR-proton Linac is not yet available.

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Reference beam dynamics layout for the SC CW heavy ion HELIAC at GSI

Cited by 12 publications

References 26 publications

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

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

Results and plans for nuclear spectroscopy of superheavy nuclei: the Lund perspective

LINAC developments for heavy ion operation at GSI and FAIR

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