J. Pucek

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)

Implementation of light diagnostics for wakefields at AWAKE

J. Mezger, M. Bergamaschi, L. Ranc, A. Sublet et autres

We describe the implementation of light diagnostics for studying the self-modulation instability of a long relativistic proton bunch in a 10 m-long plasma. The wakefields driven by the proton bunch dissipate their energy in the surrounding plasma. The amount of light emitted …

de, ch (code pays fourni par la source)

Implementation of Light Diagnostics for Wakefields at AWAKE

J. Mezger, M. Bergamaschi, L. Ranc, A. Sublet et autres

We describe the implementation of light diagnostics for studying the self-modulation instability of a long relativistic proton bunch in a 10m-long plasma. The wakefields driven by the proton bunch dissipate their energy in the surrounding plasma. The amount of light emitted as …

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 …

Plasma Light As Diagnostic For Wakefields Driven By Developing Self-Modulation Of A Long Particle Bunch

P. Muggli, M. Bergamaschi, J. Pucek, D. S. Easton et autres

We outline plans to use plasma light emitted as atomic lines radiation as a diagnostic for wakefields driven in plasma by a self-modulating, long proton bunch. This diagnostic is built into the design of a new vapor/plasma source that will also allow …

Experimental Observation of 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 …

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)

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, that we observe as filamentation. We determine a threshold value for the ratio between the bunch transverse size and plasma skin depth for the …

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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)

Plasma Light as Diagnostic for Wakefields Driven by Developing Self-Modulation of a Long Particle Bunch

P. Muggli, M. Bergamaschi, J. Pucek, Daniel Easton et autres

We outline plans to use plasma light emitted as atomic lines radiation as a diagnostic for wakefields driven in plasma by a self-modulating, long proton bunch. This diagnostic is built into the design of a new vapor/plasma source that will also allow …

de, gb (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)