| Paper | Title | Page |
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| TH3D2 | Radiation Protection Issues in Undulator Upgrades for the European XFEL | 245 |
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| European XFEL is the first free electron laser operating at MHz repetition rate with electron beam energy up to 17.5 GeV. The high repetition rate together with the high electron beam energy provides unique opportunities for users in different domains. To further extend the operation schemes, some upgrades have already been implemented and several more are planned. The advanced operation schemes may require devices inserted into the beam like slotted foil or narrow vacuum chambers such as for the corrugated structure, the Apple-X undulator, and the superconducting undulator. Due to the high beam power generated by the superconducting linac, there are concerns about increased radiation loads. Therefore, simulations and measurements have been carried out to study the radiation dose rates that may be generated. We give an overview of the simulations and measurements for the above mentioned schemes. | ||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-FLS2023-TH3D2 | |
| About • | Received ※ 30 August 2023 — Revised ※ 31 August 2023 — Accepted ※ 01 September 2023 — Issued ※ 02 December 2023 | |
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| TH3D3 | How Can Machine Learning Help Future Light Sources? | 249 |
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| Machine learning (ML) is one of the key technologies that can considerably extend and advance the capabilities of particle accelerators and needs to be included in their future design. Future light sources aim to reach unprecedented beam brightness and radiation coherence, which require challenging beam sizes and accelerating gradients. The sensitive designs and complex operation modes that arise from such demands will impact the beam availability and flexibility for the users, and can render future accelerators inefficient. ML brings a paradigm shift that can re-define how accelerators are operated. In this contribution we introduce the vision of ML-driven facilities for future accelerators, address some challenges of future light sources, and show an example of how such methods can be used to control beam instabilities. | ||
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Slides TH3D3 [5.398 MB] | |
| DOI • | reference for this paper ※ doi:10.18429/JACoW-FLS2023-TH3D3 | |
| About • | Received ※ 23 August 2023 — Revised ※ 25 August 2023 — Accepted ※ 31 August 2023 — Issued ※ 02 December 2023 | |
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TH3D4 |
DFCSR: A Fast Calculation of 2D/3D Coherent Synchrotron Radiation in Relativistic Beams | |
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| Coherent Synchrotron Radiation (CSR) is regarded as one of the most important reasons that limits beam brightness in modern accelerators. Current numerical packages containing CSR wake fields generally use 1D models, which can become invalid in electron beams with very high brightness. On the other hand, the existing 2D or 3D codes are often slow. Here we report DFCSR, a novel particle tracking code that can simulate 2D/3D CSR and space charge wakes in relativistic electron beams 2 or 3 orders of magnitude faster than conventional models like CSRtrack. We performed benchmark simulations based on FACET-II beams, where electron beams are compressed to reach 300 kA peak current. The tracking code is written in Python and C programming languages with human-friendly input styles and is open-sourced on GitHub. It can serve as a powerful simulation tool for the design of next-generation accelerators. | ||
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Slides TH3D4 [2.598 MB] | |
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TH3D5 |
Building Digital Models with thor_{s}csi: An Evolutionary Approach | |
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| Tracy is used as a computing core for digital models for synchrotron light sources since SLS. It inspired the accelerator toolbox, which is using (largely) Tracy’s Hamiltonian propagators. This Tracy code was refactored using modern software paradigms. It started with the Tracy III code base, reorganized its structure, and rebased it on a modern (cx+2a) coding style next to well-tested math libraries: but it is still using the tested Tracy propagators and code. This new code was renamed to thor-scsi, as its API was significantly reworked from the ones that Tracy II has established. Furthermore, a modern Python interfaces is provided, which is is based on pybind11. This new interface allows implementing beam line components using the Python language or tracking state spaces using truncated power series. Digital shadows or twins are essential ingredients for building 4th generation light sources. Based on the modernized thorscsi code we built an EPICS IOC exporting required thorscsi externals as EPICS variables. While it focuses on HZB’s current BESSY II and MLS, it is designed flexibly to extend to the BESSY III and MLS II project or similar light sources. | ||
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Slides TH3D5 [1.038 MB] | |
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | |