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TUA2I1 |
Xsuite: An Integrated Beam Physics Simulation Framework |
73 |
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- G. Iadarola, A. Abramov, X. Buffat, R. De Maria, D. Demetriadou, L. Deniau, P.D. Hermes, P. Kicsiny, P.M. Kruyt, A. Latina, S. Łopaciuk, L. Mether, K. Paraschou, T. Pieloni, G. Sterbini, F.F. Van der Veken
CERN, Meyrin, Switzerland
- P. Belanger
UBC & TRIUMF, Vancouver, British Columbia, Canada
- D. Di Croce, M. Seidel, L. van Riesen-Haupt
EPFL, Lausanne, Switzerland
- P.J. Niedermayer
GSI, Darmstadt, Germany
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Xsuite is a newly developed modular simulation package combining in a single flexible and modern framework the capabilities of different tools developed at CERN in the past decades, notably Sixtrack, Sixtracklib, COMBI and PyHEADTAIL. The suite is made of a set of python modules (Xobjects, Xparts, Xtrack, Xcoll, Xfields, Xdpes) that can be flexibly combined together and with other accelerator-specific and general-purpose python tools to study complex simulation scenarios. The code allows for symplectic modeling of the particle dynamics, combined with the effect of synchrotron radiation, impedances, feedbacks, space charge, electron cloud, beam-beam, beamstrahlung, electron lenses. For collimation studies, beam-matter interaction is simulated using the K2 scattering model or interfacing Xsuite with the BDSIM/Geant4 library. Tools are available to compute the accelerator optics functions from the tracking model and to generate particle distributions matched to the optics. Different computing platforms are supported, including conventional CPUs, as well as GPUs from different vendors.
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Slides TUA2I1 [4.388 MB]
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DOI • |
reference for this paper
※ doi:10.18429/JACoW-HB2023-TUA2I1
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About • |
Received ※ 30 September 2023 — Revised ※ 07 October 2023 — Accepted ※ 10 October 2023 — Issued ※ 22 October 2023 |
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WEA4C2 |
Beam Loss Simulations for the Proposed TATTOOS Beamline at HIPA |
300 |
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- M. Hartmann, D.C. Kiselev, D. Reggiani, M. Seidel, J. Snuverink, H. Zhang
PSI, Villigen PSI, Switzerland
- M. Seidel
EPFL, Lausanne, Switzerland
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IMPACT (Isotope and Muon Production with Advanced Cyclotron and Target Technology) is a proposed upgrade project for the high-intensity proton accelerator facility (HIPA) at the Paul Scherrer Institute (PSI). As part of IMPACT, a new radioisotope target station, TATTOOS (Targeted Alpha Tumour Therapy and Other Oncological Solutions) will allow to produce promising radionuclides for diagnosis and therapy of cancer in doses sufficient for clinical studies. The proposed TATTOOS beamline and target will be located near the UCN (Ultra Cold Neutron source) target area, branching off from the main UCN beamline. In particular, the 590 MeV proton beamline is intended to operate at a beam intensity of 100 uA (60 kW), requiring a continuous splitting of the main beam via an electrostatic splitter. Beam loss simulations to verify safe operation have been performed and optimised using BDSIM, a Geant4 based tool enabling the simulation of beam transportation through magnets and particle passage through accelerator. In this study, beam profiles, beam transmission and power deposits are generated and studied. Finally, a quantitative description of the beam halo is introduced.
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Slides WEA4C2 [4.534 MB]
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DOI • |
reference for this paper
※ doi:10.18429/JACoW-HB2023-WEA4C2
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About • |
Received ※ 29 September 2023 — Revised ※ 04 October 2023 — Accepted ※ 09 October 2023 — Issued ※ 28 October 2023 |
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THAFP09 |
Optimizing Beam Dynamics in LHC with Active Deep Learning |
422 |
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- D. Di Croce, T. Pieloni, M. Seidel
EPFL, Lausanne, Switzerland
- M. Giovannozzi, F.F. Van der Veken
CERN, Meyrin, Switzerland
- E. Krymova
SDSC, Lausanne, Switzerland
- M. Seidel
PSI, Villigen PSI, Switzerland
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The Dynamic Aperture (DA) is an important concept for the study of non-linear beam dynamics in a circular accelerator. It refers to the region in phase space where a particle’s motion remains bounded over a given number of turns. Understanding the features of DA is crucial for operating circular accelerators as it provides insights on non-linear beam dynamics and the phenomena affecting beam lifetime. The standard approach to calculate the DA is computationally very intensive. In our study, we aim at determining an optimal set of parameters that affect DA, like betatron tune, chromaticity, and Landau octupole strengths, using a Deep Neural Network (DNN) model. The DNN model predicts the so-called angular DA, based on simulated LHC data. To enhance its performance, we integrated the DNN model into an innovative Active Learning (AL) framework. This framework not only enables retraining and updating of the model, but also facilitates efficient data generation through smart sampling. The results demonstrate that the use of the Active Learning (AL) framework allows faster scanning of LHC ring configuration parameters without compromising the accuracy of the DA calculations.
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Slides THAFP09 [1.028 MB]
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Poster THAFP09 [6.173 MB]
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DOI • |
reference for this paper
※ doi:10.18429/JACoW-HB2023-THAFP09
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About • |
Received ※ 01 October 2023 — Revised ※ 04 October 2023 — Accepted ※ 10 October 2023 — Issued ※ 31 October 2023 |
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THBP10 |
A Linearized Vlasov Method for the Study of Transverse e-Cloud Instabilities |
462 |
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- S. Johannesson, M. Seidel
EPFL, Lausanne, Switzerland
- G. Iadarola
CERN, Meyrin, Switzerland
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Using a Vlasov approach, electron cloud driven instabilities can be modeled to study beam stability on time scales that conventional Particle In Cell simulation methods cannot access. The Vlasov approach uses a linear description of electron cloud forces that accounts for both the betatron tune modulation along the bunch and the dipolar kicks from the electron cloud. Forces from electron clouds formed in quadrupole magnets as well as dipole magnets have been expressed in this formalism. In addition, the Vlasov approach can take into account the effect of chromaticity. To benchmark the Vlasov approach, it was compared with macroparticle simulations using the same linear description of electron cloud forces. The results showed good agreement between the Vlasov approach and macroparticle simulations for strong electron clouds, with both approaches showing a stabilizing effect from positive chromaticity. This stabilizing effect is consistent with observations from the LHC.
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Poster THBP10 [4.059 MB]
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DOI • |
reference for this paper
※ doi:10.18429/JACoW-HB2023-THBP10
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About • |
Received ※ 26 September 2023 — Revised ※ 05 October 2023 — Accepted ※ 10 October 2023 — Issued ※ 14 October 2023 |
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