Experimental Observation of Plasma Wakefield Growth Driven by the Seeded Self-Modulation of a Proton Bunch

CERN, Switzerland

Результат исследования: Научные публикации в периодических изданияхстатья

15 Цитирования (Scopus)

Аннотация

We measure the effects of transverse wakefields driven by a relativistic proton bunch in plasma with densities of 2.1×1014 and 7.7×1014 electrons/cm3. We show that these wakefields periodically defocus the proton bunch itself, consistently with the development of the seeded self-modulation process. We show that the defocusing increases both along the bunch and along the plasma by using time resolved and time-integrated measurements of the proton bunch transverse distribution. We evaluate the transverse wakefield amplitudes and show that they exceed their seed value (<15 MV/m) and reach over 300 MV/m. All these results confirm the development of the seeded self-modulation process, a necessary condition for external injection of low energy and acceleration of electrons to multi-GeV energy levels.

Язык оригиналаанглийский
Номер статьи054801
Число страниц7
ЖурналPhysical Review Letters
Том122
Номер выпуска5
DOI
СостояниеОпубликовано - 8 фев 2019

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