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Related papers: Conical Targets for Enhanced High-Current Positron…

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The study of near--threshold meson production in pp and pd collisions involving polarized beams and polarized targets offers the rare opportunity to gain insight into short--range features of the nucleon--nucleon interaction. The Cooler…

Nuclear Experiment · Physics 2009-11-07 F. Rathmann , M. Düren , P. Jansen , F. Klehr , S. Martin , H. O. Meyer , K. Rith , H. Seyfarth , E. Steffens , H. Ströher

The paper presents a survey of the main numerical models used for simulation of interaction of accelerated particle beams with target nuclei. These models form the core of the software for simulation of various experiments and experimental…

Accelerator Physics · Physics 2022-09-28 M. Baznat , A. Baldin , E. Baldina , M. Paraipan , V. Pronskikh , P. Zhivkov

Proton interactions with $^{12}$C nuclei are a frequent nuclear interaction leading to secondary radiation in tissues for space radiation and cancer therapy with protons or $^{12}$C beams. The fragmentation of $^{12}$C by protons produces a…

Nuclear Theory · Physics 2022-11-30 Francis A. Cucinotta , Sungmin Pak

The potential of muon beams for high energy physics applications is described along with the challenges of producing high quality muon beams. Two proposed approaches for delivering high intensity muon beams, a proton driver source and a…

Accelerator Physics · Physics 2019-09-26 Manuela Boscolo , Jean Pierre Delahaye , Mark Palmer

Laser-electron beam collisions that aim to generate electron-positron pairs require laser intensities $I \gtrsim 10^{21} ~\textrm{W/cm}^2$, which can be obtained by focusing a 1-PW optical laser to a spot smaller than 10 $~\mu$m. Spatial…

Plasma Physics · Physics 2021-11-17 Óscar Amaro , Marija Vranic

The Future Circular Collider (FCC) is a post-LHC project aiming at searches for physics beyond the SM in a new 80--100~km tunnel at CERN. Running in its first phase as a very-high-luminosity electron-positron collider (FCC-ee), it will…

High Energy Physics - Phenomenology · Physics 2016-10-21 Peter Skands , David d'Enterria

Photogalvanic effect (PGE) occurring in noncentrosymmetric materials enables the generation of the open-circuit voltage that is much larger than the bandgap, making it rather attractive in solar cells. However, the magnitude of the PGE…

Applied Physics · Physics 2020-08-11 Juan Zhao , Yibin Hu , Yiqun Xie , Lei Zhang , Yin Wang

The electron-positron stage of the Future Circular Collider (FCC-ee) provides exciting opportunities that are enabled by next generation particle physics detectors. This contribution presents IDEA, a detector concept optimised for FCC-ee…

Instrumentation and Detectors · Physics 2026-04-30 Armin Ilg

Modifications to test-time sampling have emerged as an important extension to diffusion algorithms, with the goal of biasing the generative process to achieve a given objective without having to retrain the entire diffusion model. However,…

Machine Learning · Computer Science 2026-04-21 Hao Luan , Yi Xian Goh , See-Kiong Ng , Chun Kai Ling

We present the conceptual design of a polarized $^3$He target to be used for high luminosity scattering experiments within high magnetic field environments. This two-cell target will take advantage of advancements in optical pumping…

Instrumentation and Detectors · Physics 2021-07-15 James Maxwell , Richard Milner

We studied enhanced superconductivity in point contacts (PCs) based on a type-I Weyl semimetal trigonal t-PtBi2 using both normal metal (Ag, Cu, Pt) and ferromagnetic (Fe, Co, Ni) tips by measuring the differential resistance dV/dI(V)…

Intense positron beams can be prepared via electro production with the reaction $e^{-} + e^{-} \rightarrow e^{-}+e^{+}+e^{-}+e^{-}$ due to the availability of high current electron beams. Head on collisions inside of a magnetic field of a…

Accelerator Physics · Physics 2016-07-14 Berthold Schoch

The expected experimental precision of the rates and asymmetries in the Future Circular Collider with electron positron beams (FCC-ee) in the centre of the mass energy range 88-365GeV considered for construction in CERN, will be better by a…

High Energy Physics - Phenomenology · Physics 2019-11-22 S. Jadach , M. Skrzypek

A novel approach for positron injection and acceleration in laser driven plasma wakefield is proposed. A theoretical model is developed and confirmed through PIC simulation. One ring-shaped beam and one co-axially propagating Gaussian beam…

The concept of large-radius multistage coaxial cyclotrons having separated orbits is described, to generate proton beams of 120-2000 MeV energy at tens of GW pulsed and hundreds of MW in continuous beam power operation. Accelerated beam…

Accelerator Physics · Physics 2007-05-23 A. R. Tumanyan , N. Z. Akopov , Z. G. Guiragossian , Z. N. Akopov

Positron range (PR) blurring degrades positron emission tomography (PET) image resolution, particularly for high-energy emitters like gallium-68 (68 Ga). We introduce Dual-Input Dynamic Convolution (DDConv), a novel computationally…

When focusing a light beam at high numerical aperture, the resulting electric field profile in the focal plane depends on the transverse polarisation profile, as interference between different parts of the beam needs to be taken into…

Optics · Physics 2020-05-14 R. D. Hawley , R. Offer , N. Radwell , S. Franke-Arnold

We review a number of ideas put forward in favour of the use of a polarised target along with the proposed idea of a fixed-target experiment using the LHC beams -- AFTER@LHC. A number of recent studies have shown that single transverse-spin…

In positron emission tomography (PET), a clear theoretical model describing how system sensitivity varies as a source is moved trans-axially within the field of view (FOV) is lacking. The current understanding and practical intuition often…

Medical Physics · Physics 2026-01-26 Boheng Lin , Zizhuo Xie , Bo Zhang , Lin Wan , Ao Qiu , Qingguo Xie

Muon beams are customarily obtained via $K/\pi$ decays produced in proton interaction on target. In this paper we investigate the possibility to produce low emittance muon beams from electron-positron collisions at centre-of-mass energy…

Accelerator Physics · Physics 2015-12-09 M. Antonelli , M. Boscolo , R. Di Nardo , P. Raimondi