A. Topaloudis

Experimental Observation of the Motion of Ions in a Resonantly Driven Plasma Wakefield Accelerator

M. Turner, Erwin Walter, C. Amoedo, N. Torrado et autres

We show experimentally that an effect of motion of ions, observed in a plasma-based accelerator, depends inversely on the plasma ion mass. The effect appears within a single wakefield event and manifests itself as a bunch tail, occurring only when sufficient motion …

ch, de, pt, pk, gb, kr, hu, dk, se, ca, us (code pays fourni par la source)

Measurement of the emittance of accelerated electron bunches at the AWAKE experiment

D. Cooke, F. N. Pannell, G. Zevi Della Porta, John Farmer et autres

The vertical plane transverse emittance of accelerated electron bunches at the AWAKE experiment at CERN has been determined, using three different methods of data analysis. This is a proof-of-principle measurement using the existing AWAKE electron spectrometer to validate the measurement technique. Large …

Filamentation of a relativistic proton bunch in plasma

L. Verra, C. Amoedo, N. Torrado, A. Clairembaud et autres

We show in experiments that a long, underdense, relativistic proton bunch propagating in plasma undergoes the oblique instability, which we observe as filamentation. We determine a threshold value for the ratio between the bunch transverse size and plasma skin depth for the …

ch, pt, fr, de, pk, gb, it, kr, hu, us, dk, ca, ru, se (code pays fourni par la source)

Hosing of a Long Relativistic Particle Bunch in Plasma

T. Nechaeva, L. Verra, J. Pucek, L. Ranc et autres

Experimental results show that hosing of a long particle bunch in plasma can be induced by wakefields driven by a short, misaligned preceding bunch. Hosing develops in the plane of misalignment, self-modulation in the perpendicular plane, at frequencies close to the plasma …

de, ch, gb, kr, hu, pt, us, dk, ca, ru, se (code pays fourni par la source)

A smart beekeeping platform based on remote sensing and artificial intelligence

Nikos Grammalidis, Andreas Stergioulas, Aggelos Avramidis, Konstantinos Karystinakis et autres

Honey bees play an essential role in the food chain, being responsible for one third of the global food supply due to pollination. Thus, preserving the health of beehives is of paramount environmental and economic importance. Unfortunately, at present a decline in …

gr (code pays fourni par la source)

Development of the self-modulation instability of a relativistic proton bunch in plasma

L. Verra, Samuel Stefan Wyler, T. Nechaeva, J. Pucek et autres

Self-modulation is a beam–plasma instability that is useful to drive large-amplitude wakefields with bunches much longer than the plasma skin depth. We present experimental results showing that, when increasing the ratio between the initial transverse size of the bunch and the plasma …

ch, de, gb, kr, hu, us, ca, pt, se (code pays fourni par la source)

The AWAKE Run 2 Programme and Beyond

К. В. Лотов, P. Muggli, M. Wing, R. Agnello et autres

Plasma wakefield acceleration is a promising technology to reduce the size of particle accelerators. The use of high energy protons to drive wakefields in plasma has been demonstrated during Run 1 of the AWAKE programme at CERN. Protons of energy 400 GeV …

ch, ru, de, gb, kr, hu, pt, us, dk, ca, se (code pays fourni par la source)

Controlled Growth of the Self-Modulation of a Relativistic Proton Bunch in Plasma

L. Verra, G. Zevi Della Porta, J. Pucek, Tatiana Nechaeva et autres

A long, narrow, relativistic charged particle bunch propagating in plasma is subject to the self-modulation (SM) instability. We show that SM of a proton bunch can be seeded by the wakefields driven by a preceding electron bunch. SM timing reproducibility and control …

de, ch, hu, gb, kr, pt, ru, us, dk, ca, se (code pays fourni par la source)

The AWAKE Run 2 programme and beyond

К. В. Лотов, P. Muggli, M. Wing, R. Agnello et autres

Plasma wakefield acceleration is a promising technology to reduce the size of particle accelerators. Use of high energy protons to drive wakefields in plasma has been demonstrated during Run 1 of the AWAKE programme at CERN. Protons of energy 400 GeV drove …

no (code pays fourni par la source)

Analysis of proton bunch parameters in the AWAKE experiment

Vasyl Hafych, A. Caldwell, R. Agnello, C. Ahdida et autres

Abstract A precise characterization of the incoming proton bunch parameters is required to accurately simulate the self-modulation process in the Advanced Wakefield Experiment (AWAKE). This paper presents an analysis of the parameters of the incoming proton bunches used in the later stages …

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Simulation and experimental study of proton bunch self-modulation in plasma with linear density gradients

P. I. Morales Guzmán, P. Muggli, R. Agnello, C. Ahdida et autres

We present numerical simulations and experimental results of the self-modulation of a long proton bunch in a plasma with linear density gradients along the beam path. Simulation results agree with the experimental results reported [F. Braunmller, T. Nechaeva et al. (AWAKE Collaboration), …

de, ch, hu, gb, ru, kr, pt, us, dk (code pays fourni par la source)

Transition between Instability and Seeded Self-Modulation of a Relativistic Particle Bunch in Plasma

Fabian Batsch, P. Muggli, R. Agnello, C. Ahdida et autres

We use a relativistic ionization front to provide various initial transverse wakefield amplitudes for the self-modulation of a long proton bunch in plasma. We show experimentally that, with sufficient initial amplitude [≥(4.1±0.4) MV/m], the phase of the modulation along the bunch is …

de, ch, gb, ru, kr, hu, pt, ca, us, dk (code pays fourni par la source)