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RIS citation export for TUPML023: Amplitude Enhancement of the Self-Modulated Plasma Wakefields

TY - CONF
AU - Li, Y. M.
AU - Lotov, K.V.
AU - Sosedkin, A.
AU - Xia, G.X.
AU - Zhao, Y.
ED - Koscielniak, Shane
ED - Satogata, Todd
ED - Schaa, Volker RW
ED - Thomson, Jana
TI - Amplitude Enhancement of the Self-Modulated Plasma Wakefields
J2 - Proc. of IPAC2018, Vancouver, BC, Canada, April 29-May 4, 2018
C1 - Vancouver, BC, Canada
T2 - International Particle Accelerator Conference
T3 - 9
LA - english
AB - Seeded Self-modulation (SSM) has been demonstrated to transform a long proton bunch into many equidistant micro-bunches (e.g., the AWAKE case), which then resonantly excite strong wakefields. However, the wakefields in a uniform plasma suffer from a quick amplitude drop after reaching the peak. This is caused by a significant decrease of the wake phase velocity during self-modulation. A large number of protons slip out of focusing and decelerating regions and get lost, and thus cannot contribute to the wakefield growth. Previously suggested solutions incorporate a sharp or a linear plasma longitudinal density increase which can compensate the backward phase shift and therefore enhance the wakefields. In this paper, we propose a new plasma density profile, which can further boost the wakefield amplitude by 30%. More importantly, almost 24% of protons initially located along one plasma period survive in a micro-bunch after modulation. The underlying physics is discussed.
PB - JACoW Publishing
CP - Geneva, Switzerland
SP - 1585
EP - 1588
KW - proton
KW - plasma
KW - wakefield
KW - focusing
KW - ECR
DA - 2018/06
PY - 2018
SN - 978-3-95450-184-7
DO - 10.18429/JACoW-IPAC2018-TUPML023
UR - http://jacow.org/ipac2018/papers/tupml023.pdf
ER -