Conveners
Plenary: Plenary 1
- John Power (Argonne National Lab)
Plenary: Plenary 2
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Plenary: Plenary 3
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Plenary: Plenary 4
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Plenary: Plenary 5
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Plenary
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Plenary: Students Presentations
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Advanced accelerator concepts have potential to enable future colliders. Recent progress includes multi-GeV acceleration, positron acceleration, strong structure loading and focusing, staging of two modules, beam shaping for efficiency, high gradient structures and greatly improved beam quality which recently enabled wakefield-based FELs.
The recent 2023 Particle Physics Project...
European research groups and institutions, often working in close collaboration with others from around the world, work on all aspects of advanced accelerator research.
In this talk I will give an overview of research efforts in Europe, highlight recent key results, and indicate anticipated future directions.
The first demonstrations of fully optical multi-GeV laser wakefield acceleration (LWFA) have been enabled by the advent of low density (~$10^{17}$ $cm^{-3}$), meter-scale plasma waveguides generated in supersonic gas jets [1-7]. In this talk, I will present results from our recent LWFA experiments using plasma waveguides up to 30 cm in length, which have produced sub-milliradian divergence...
Laser-accelerated electron beams have been the subject of intense research in the last few decades. The general direction in the field is the development towards ultralow beam emittance, necessitating controlled injection methods to ensure electron trapping in the laser-driven plasma wave. Due to its simplicity, one of the more popular injection mechanisms relies on a downward step in gas...
Future applications of laser-plasma accelerators will require one or more stages providing multi-GeV energy gain. Preformed plasma channels can increase the maximum energy gain of a laser-plasma accelerator. Recently, hydrodynamic optical-field-ionized (HOFI) plasma channels [1-3] have gained attention because i) they produce tightly confined channels at densities required for multi-GeV...
Accelerator-based x-ray free-electron lasers (XFELs) are the latest addition to the revolutionary tools of discovery for the 21st century. The two major components of an XFEL are an accelerator-produced electron beam and a magnetic undulator, which tend to be kilometer-scale long and expensive. A proof-of-principle demonstration of free-electron lasing at 27 nm using beams from compact laser...
Structure wakefield accelerators (SWFAs) offer a path to high accelerating gradient using either collinear wakefield acceleration or two-beam acceleration (TBA). In the past five years, significant progress has been made in operating accelerating structures powered externally by short radiofrequency pulses generated from thew wakefield of decelerating bunches. Such a TBA approach has...
Laser-plasma acceleration has enormous potential to provide compact sources of ultra-short ion beams. However, several factors hamper their wider adoption, such as the low shot-to-shot stability, large beam divergence and the difficulty of high-repetition rate operation. In this talk I will outline an approach for overcoming these challenges by a novel liquid sheet target, developed at the...
Currently, the Extreme Light Infrastructure – Nuclear Physics (ELI-NP) facility is running the most powerful laser in the world. The commissioning of the 10 PW laser system began at the end of 2022 and continued until recently. The first ever 10 PW shot focused on target was fired on April 2023 and since then a constant effort has been made to improve the laser performance and the experimental...
Laser-driven (LD) proton sources are of interest for various applications due to their ability to produce short proton bunches with high charge. These sources can be used in biological studies investigating improvements to radiation cancer therapy. Recently, the differential sparing effect on normal tissues versus tumors using the delivery of high radiation doses >10 Gy at extremely high dose...
Laser-plasma accelerators (LPAs) have great potential to be compact and economic, and can enable many applications in science, industry, and medicine, from wakefield colliders (e.g. 10TeV) and precision LPA facilities (e.g. kBELLA) to photon and particle sources. These applications need new kHz rep-rate laser driver technologies producing Joules of pulse energy, up to 100’s kW average power,...
The space-charge field of a relativistic bunch is screened in plasma due to the presence of mobile charge carriers. We experimentally investigate such screening by measuring the effect of dielectric wakefields driven by an electron bunch in an uncoated dielectric capillary where the plasma is confined [1]. We show that the plasma screens the space-charge field and therefore suppresses the...
Beam test facilities have been an integral part of accelerator science research, education, and applications development. However, awareness of their capabilities is limited, and potential new researchers typically face a multitude of barriers in accessing their capabilities, such as a lack of centralized information on facility capabilities or how to engage with them. BeamNetUS is a network...
The United States government high energy physics community develops state-of-the-art particle accelerator technologies, which later must be purchased from abroad to support domestic projects, because US-based firms are not consistently prioritized for government programs of record. In contrast, the high energy physics communities in Europe and Asia work to nurture their domestic industrial...
ALEGRO, the Advanced LinEar collider study GROup, is an international study group created in 2017 to promote Advanced and Novel Accelerators (ANAs) for High-Energy Physics applications. It is driven by the ICFA-ANA panel. ALEGRO organizes workshops (CERN 2017, Oxford 2018, CERN 2019, DESY 2023, IST 2024) to energize the ANA community around applications to particle and high-energy physics. The...
I will give an overview of the 2023 P5 recommendations for accelerators as well as rollout plans, processes, recent HEP organizational changes and possibly share some personal perspectives and thoughts.
This discussion focuses on the planning for R&D toward a linear collider based on advanced acceleration concepts.