Description
LPAP is looking for a highly motivated PhD Student !
Please follow the official EPFL link listed for more details and to have access to the online application. EPFL Link
The Ecole polytechnique fédérale de Lausanne (EPFL) is one of the most dynamic university campuses in Europe and ranks among the top 20 universities worldwide. The EPFL employs 6,000 people supporting the three main missions of the institutions: education, research and innovation. The EPFL campus offers an exceptional working environment at the heart of a community of 16,000 people, including over 10,000 students and 3,500 researchers from 120 different countries.
The EPFL Laboratory of Particle Accelerator Physics (LPAP) is looking for a PhD student to strengthen our interdisciplinary team focusing on the development of a robust optics configuration and beam-beam collision scheme of the Future Circular Colliders (FCC).
Description
In the context of a challenging project “Beam-beam and coherent stability studies for the Future Circular Collider FCC-ee” funded by the Swiss Accelerator Research and Technology institute (CHART), our laboratory aims at maximizing the number of collisions, and consequently the precision of particle physics measurements in the FCC-ee by studying stabilising mechanisms in collision.
High energy colliders feature high intensity and high density particle beams. In this regime, multiple phenomena lead to strong beam instabilities that require dedicated stabilization techniques. Due to its strongly non-linear nature, the electromagnetic interaction of the two beams on each other, so-called beam-beam force, generates a large frequency spread in the oscillation frequency of the particles in the beam and, thus, leads to Landau damping of beam instabilities. Mastering this mechanism is key in pushing the collider performance to its limit while maintaining the beam stability, yet today it is mostly addressed with numerical simulations. The student will combine analytical developments based on the Vlasov equation together with numerical tracking simulations in order to gain further insight into the phenomenon and potentially devise novel methods to improve the beam stability in existing and future colliders. The study will be extended also to cover the interplay of beam-beam interactions impact to the stability when space charge and/or the machine impedance is present.
We offer
The Ecole polytechnique fédérale de Lausanne (EPFL) is one of the most dynamic university campuses in Europe and ranks among the top 20 universities worldwide. The EPFL employs 6,000 people supporting the three main missions of the institutions: education, research and innovation. The EPFL campus offers an exceptional working environment at the heart of a community of 16,000 people, including over 10,000 students and 3,500 researchers from 120 different countries.
The EPFL Laboratory of Particle Accelerator Physics (LPAP) is looking for a PhD student to strengthen our interdisciplinary team focusing on the development of a robust optics configuration and beam-beam collision scheme of the Future Circular Colliders (FCC).
Description
In the context of a challenging project “Luminosity and betatron coupling effects in high energy colliders” funded by the Swiss Accelerator Research and Technology institute (CHART), our laboratory aims to investigate both local and global coupling effects in particle colliders, with particular attention to their interplay with beam-beam interactions. These effects can significantly influence luminosity and overall machine performance, especially in next-generation, high-luminosity machines such as the HL-LHC and FCC-ee.
A detailed study will be conducted to understand how transverse coupling interacts with beam-beam dynamics and how this interplay affects luminosity, beam stability, and the luminous region. The goal is to develop a deeper understanding of these complex interactions in order to propose strategies that enhance luminosity performance while maintaining beam stability. In the case of the HL-LHC, the focus will be on optimizing performance for precision measurements, whereas for the FCC-ee, the study will emphasize how coupling and beam-beam effects shape the luminous region.
This work will also address correction strategies, including the development and implementation of dedicated correction knobs. Where feasible, experimental studies of local and global coupling—particularly at the LHC and potentially at SuperKEKB—will be included to validate the theoretical and simulation-based findings.
We offer
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Accelerator Physics