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ALEGRO Workshop 2024, Lisbon, 19-22 March

19–22 Mar 2024
Instituto Superior Técnico
Europe/Lisbon timezone

Administrative Support: Cláudia Romão

Contribution List

44 out of 44 displayed
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  1. 52. Opening Words
    Luis Silva, Patric Muggli
    19/03/2024, 14:00
  2. 53. R&D Roadmap of the European Particle Physics Strategy
    Wim Leemans (DESY)
    19/03/2024, 14:30
  3. 54. US perspective on plasma based accelerators and future colliders
    Cameron Geddes (LBNL)
    19/03/2024, 15:00
  4. 83. Discussion on Organisation / Funding
    19/03/2024, 15:30
  5. 55. Physics considerations for laser-plasma linear colliders: achievements and perspectives
    Carlo Benedetti (LBNL)
    19/03/2024, 16:30
  6. 56. Advances in Structure Wakefield Accelerator R&D for Integration in a Linear Collider
    Philippe Piot (Northern Illinois University)
    19/03/2024, 17:00
  7. 57. Introduction to Sustainability for large Research Infrastructures
    Denise Voelker
    20/03/2024, 09:00
  8. 58. Sustainability at CERN: strategy for future machines
    Roberto Losito (CERN)
    20/03/2024, 09:30
  9. 59. Discussion on sustainability (efficiency budget prospects for LWFA, PWFA)
    20/03/2024, 10:00
  10. 61. Prospects and challenges for high-repetition-rate plasma sources for future colliders
    Simon Hooker
    20/03/2024, 11:30
  11. 62. Staging LWFAs using plasma mirrors
    Michael Backhouse
    20/03/2024, 12:00

    The coupling of fresh drive laser pulses into LWFA stages compactly can be achieved by using thin film plasma mirrors. Plasma mirrors allow acceleration stages to be placed close to each other, which both increases the average acceleration gradient and reduces drift driven emittance growth. To be effective, plasma mirrors need to preserve the intensity to which the laser can be focussed while...

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  12. 46. LASY: an open-source Python library for easy interfacing of laser pulses between experiments and simulations
    Kristjan Põder (Deutsches Elektronen Synchtrotron DESY)
    20/03/2024, 13:30

    While multiple works demonstrated the importance of using realistic laser profiles for simulations of laser-plasma accelerators to accurately reproduce experimental measurements, the handshake between experiments and simulations can be challenging. Similarly, transferring a laser pulse from one code to another, as needed for start-to-end simulations, may require some error-prone manipulations....

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  13. 64. Multistage LWFA based on curved plasma channels
    Boyuan Li
    20/03/2024, 14:00
  14. 43. Hybrid LWFA-driven PWFA as a test platform for staged plasma acceleration
    Susanne Schöbel (Helmholtz-Zentrum Dresden-Rossendorf)
    20/03/2024, 14:30

    Staging, sequencing plasma accelerator modules, is an important concept for the further development of plasma-based acceleration methods to reach the energy level required for high energy physic applications. In- and out-coupling of drive laser beams as well as matching of the electron beam into the plasma cavity of a subsequent energy booster stage require spatio-temporal control to achieve...

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  15. 70. Simulations of Next-Generation Colliders
    Dr Axel Huebl (Lawrence Berkeley National Laboratory)
    20/03/2024, 15:00
  16. 71. Hybrid Asymmetric Linear Higgs Factory (HALHF): Updates and Upgrades
    Richard D'Arcy (DESY)
    20/03/2024, 16:00
  17. 41. Towards a Higgs Factory based on Proton-Driven Plasma Wakefield Acceleration
    Alexander Pukhov
    20/03/2024, 16:30

    A Higgs Factory is considered the highest priority next collider project by the high-energy physics community. Very advanced designs based on radio-frequency cavities exist, and variations on this approach are still being developed. Recently, also an option based on electron bunch driven plasma wakefield acceleration has been proposed.
    Here, we discuss a further option based on proton-driven...

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  18. 84. Discussion
    20/03/2024, 17:00
  19. 73. Emittance mixing of flat beams in plasma accelerators
    Severin Diederichs
    21/03/2024, 09:00
  20. 74. Advancements in Beam Delivery Systems: CLIC Innovations and Plasma Collider Applications
    Vera Cilento (CERN)
    21/03/2024, 09:30
  21. 67. Laser-driven production of ultra-short high quality positron beams
    Gianluca Sarri (Queen's University Belfast)
    21/03/2024, 10:00
  22. 76. Experience with Wakefield Acceleration at SwissFEL
    Evan Ericson (EPFL/PSI)
    21/03/2024, 11:00
  23. 77. Beam quality preservation using multi-staged dielectric-lined rectangular waveguides
    Oznur Apsimon (University of Manchester (GB))
    21/03/2024, 11:30
  24. 78. AWAKE a plasma wakefield accelerator for particle physics
    Marlene Turner (CERN)
    21/03/2024, 13:30
  25. 79. The EuPRAXIA project: a plasma-based accelerator user facility for the next decade
    Massimo Ferrario
    21/03/2024, 14:00

    The EuPRAXIA@SPARC_LAB facility is the beam driven pillar of the EuPRAXIA project which is expected to provide by the end of 2028 the first European Research Infrastructure dedicated to demonstrating usability of plasma accelerators delivering high brightness beams up to 1-5 GeV for users.
    Among the possible EuPRAXIA@SPARC_LAB applications the realization of a short wavelength Free Electron...

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  26. 69. Positrons at FACET-II: Status and Potential
    Mark Hogan
    21/03/2024, 14:30
  27. 81. Plasma based Accelerator research for future collider in China
    wei lu (tsinghua university)
    21/03/2024, 15:00
  28. 82. A Tutorial on Particle in Cell simulation of Laser Wakefield Acceleration
    21/03/2024, 16:40

    Laser Wakefield Acceleration (LWFA) stands as a promising particle acceleration mechanism leading to accelerating gradients orders of magnitude higher than those of conventional methods. Detailed understanding of the nonlinear laser-plasma interaction mechanisms of LWFA at the kinetic scale requires performing Particle in Cell (PIC) simulations.
    Although PIC codes exist since several decades,...

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  29. 51. Advancements in Plasma-Driven Acceleration for Non-Relativistic Particles
    21/03/2024, 16:40

    In plasma-wakefield acceleration, non-relativistic particles quickly lose phase-locking due to the substantial difference between the driver's group velocity (nearly the speed of light) and the particles' velocities. Heavier particles such as muons [1] and pions have thus conventionally been excluded from this method. Recent advancements have introduced methods for shaping electromagnetic wave...

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  30. 88. All-optical induced twist without angular momentum via local pump depletion
    21/03/2024, 16:40

    Angular momentum transfer in nonlinear laser-plasma interactions, accompanied by strong axial magnetic field generation (Tesla to kilo-Tesla) [1-2], can significantly influence the dynamics during laser-driven particle acceleration. Axial magnetic field generation is typically identified in systems using lasers with angular momentum, such as circularly polarized lasers [1] and lasers with...

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  31. 86. Arbitrary Electromagnetic Wave Packets in Particle in Cell Codes
    21/03/2024, 16:40

    Particle-in-Cell (PIC) codes commonly employ laser injection algorithms rooted in analytical solutions of the paraxial wave equation under the slowly-varying envelope approximation. These algorithms, while computationally efficient, are tailored to lasers with transverse spot sizes and temporal durations significantly larger than their respective wavelengths and periods. Consequently, they...

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  32. 42. Complete elimination of BBU in open structured channels
    21/03/2024, 16:40

    The plasma-based particle acceleration promises very high accelerating fields. At the same time, it is widely accepted that uniform plasma only can support acceleration of negatively charged witness particles. Hollow plasma channels would be suitable for acceleration of witnesses of both charges due to the absence of focusing fields inside the vacuum channel core. Unfortunately, beams in the...

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  33. 44. Developing expectations for AWAKE with simulations.
    21/03/2024, 16:40

    The AWAKE experiment at CERN makes use of a self-modulated proton bunch to excite wakefields and accelerate a witness electron bunch. Run 2c of the experiment will demonstrate stabilization of the wakefield amplitude and control of the witness bunch emittance during injection and acceleration. In this work, we present an overview of the ongoing simulation efforts to support the project as it...

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  34. 89. Is Attosecond Pulse Generation Achievable at ELI Beamline Facilities through the Flying Mirror Mechanism?
    21/03/2024, 16:40

    The allure of attosecond pulses, which unravel electron behavior in atoms and find diverse applications across ultrafast phenomena, nuclear physics, and astrophysics, have captivated scientists in this field. The present investigation delves into the feasibility of generating attosecond pulses utilizing the Flying Mirror Mechanism at ELI Beamline Facilities. Achieving optimal reflection from...

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  35. 48. Laser focusing trade-off in the multi-PW regime
    21/03/2024, 16:40

    The development of laser technology will soon enable experiments focused on the interaction of laser pulses with power up to 10 PW with various types of plasma targets for purposes of electron acceleration. Amongst the others, the motivation is to reach the highest possible energies on distances shorter compared to conventional accelerators. We have recently shown using particle-in-cell...

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  36. 50. MPI-GPU Algorithm in QuickPIC
    21/03/2024, 16:40

    QuickPIC is a quasi-static PIC code for efficiently modeling the plasma based accelerators. It can be 1000 times faster than the conventional PIC code without losing accuracy. QuickPIC is developed based on the frame work UPIC. It has a hybrid parallelism algorithm that uses both OpenMP and MPI. Such an algorithm is also suitable for a GPU cluster. In this work, we will introduce the GPU+MPI...

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  37. 85. Optimisation of Quasi-Neutral Lepton Beams using Direct Laser Acceleration
    21/03/2024, 16:40

    Particle acceleration over a short distance has a vast range of potential acceleration applications. While electron acceleration in plasmas has proven widely successful, accelerating positrons is an ongoing challenge. Positron acceleration is challenging as the accelerating guiding structures for electrons are inadequate to guide positrons. Recently, Direct Laser Acceleration has emerged as a...

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  38. 45. Phase Control of Nonlinear Breit-Wheeler Pair Creation
    21/03/2024, 16:40

    Some astrophysical objects (e.g., pulsars) harbor extremely intense electromagnetic fields in their immediate surroundings. These fields allow for spontaneous and proliferous electron-positron pair creation, generating what is called a lepton pair plasma. It has so far been impossible to replicate these conditions in a laboratory setup. The advances of state-of-the-art laser and accelerator...

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  39. 40. Undepleted direct laser acceleration
    21/03/2024, 16:40

    In direct laser acceleration (DLA) of electrons, the leading part of the laser pulse ionizes the target material and forms a positively charged ion plasma channel into which electrons are injected and accelerated.
    I will describe our recent work [Cohen, I., et. al, Science advances, 10(2), eadk1947(2024)] which shows that for efficient DLA to prevail, target materials of sufficiently...

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  40. 49. SFQED - Disruption Interplay in Leptonic Beam Interaction for Future Colliders
    Dr Thomas Grismayer (GoLP/IPFN, Instituto Superior Técnico, Universidade de Lisboa)
    22/03/2024, 09:00

    High-luminosity collisions between dense and high-energy beams (100s GeV to a few TeV) planned for future colliders, including utilizing advanced collider concepts through high-gradient plasma-based accelerators, will push beamstrahlung into the quantum regime. The typical beam parameters at the final focus will necessitate the disruption parameter to be (D < 1). However, the bunch length...

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  41. 68. Positron acceleration in plasma wakefields for linear colliders: a review of progress and challenges
    Sebastien Corde
    22/03/2024, 09:30
  42. 47. Generation and acceleration of polarised electron bunches in plasma accelerators
    Kristjan Põder (Deutsches Elektronen Synchtrotron DESY)
    22/03/2024, 10:00

    Highly polarised, high current electron bunches from compact plasma accelerators are sought after for numerous applications. However, current proposals to generate these beams from plasmas suffer from intrinsic limitations to the reproducibility, charge, beam shape and final polarisation degree. We propose colliding pulse injection as a technique for the generation of highly polarised electron...

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  43. 66. Discussion on Simulations
    Jorge Vieira
    22/03/2024, 11:30
  44. 65. Conclusions
    22/03/2024, 12:00