期刊
PHYSICAL REVIEW LETTERS
卷 122, 期 5, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.122.054801
关键词
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资金
- Max Planck Society
- Siberian Branch of the Russian Academy of Science [0305-2017-0021]
- Leverhulme Trust Research Project [RPG-2017-143]
- Deutsche Forschungsgemeinschaft [PU 213-6/1]
- National Research Foundation of Korea [NRF-2015R1D1A1A01061074, NRF-2016R1A5A1013277]
- Portuguese FCT-Foundation for Science and Technology [CERN/FIS-TEC/0032/2017, UID/FIS/50010/2013, SFRH/IF/01635/2015]
- NSERC
- Research Council of Norway
- Alexander von Humboldt Stiftung
- DESY, Hamburg
- STFC
- STFC [1787274, 1690577, ST/K002317/1, ST/N001001/1, ST/R002347/1, ST/R002312/1, ST/P002056/1, 2021482, ST/P001939/1, ST/M004570/1, ST/R002339/1, AWAKE, ST/N001486/1, ST/R002304/1] Funding Source: UKRI
- Fundação para a Ciência e a Tecnologia [UID/FIS/50010/2013, CERN/FIS-TEC/0032/2017] Funding Source: FCT
We measure the effects of transverse wakefields driven by a relativistic proton bunch in plasma with densities of 2.1 x 10(14) and 7.7 x 10(14) electrons/cm(3). 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.
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