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TY - CONF AU - Shou, Y.R. AU - Geng, Y.X. AU - Li, C. AU - Li, L.R.F. AU - Liao, Q. AU - Lin, C. AU - Lu, H.Y. AU - Ma, W.J. AU - Wang, P. AU - Wu, M. AU - Xu, X. AU - Yan, X.Q. AU - Zhao, Y.Y. AU - Zhu, J.G. ED - Schaa, Volker RW ED - Arduini, Gianluigi ED - Pranke, Juliana ED - Seidel, Mike ED - Lindroos, Mats TI - Laser Proton Accelerator with Improved Repeatability at Peking University J2 - Proc. of IPAC2017, Copenhagen, Denmark, 14â19 May, 2017 C1 - Copenhagen, Denmark T2 - International Particle Accelerator Conference T3 - 8 LA - english AB - The repeatability of laser proton accelerator is mainly limited by laser plasma interaction, laser target coupling and laser parameter variation. In our recent experiments performed on the Compact Laser Plasma Accelerator at Peking University, gain of proton beams with improved repeatability is demonstrated. In order to control the laser plasma interaction in pre-plasma, cross polarized-wave (XPW) generation technique is employed to provide a laser pulse with a good contrast of 10⁻¹⁰. A semi-automatic laser and target alignment system with a sensitivity of few micrometers is employed. The repetition rate of the laser proton accelerator is improved to the level of 0.1 Hz which is beneficial to decrease laser parameter variation. The shot-to-shot variation of proton energies is about 9% for a level of confidence of 0.95. PB - JACoW CP - Geneva, Switzerland SP - 3275 EP - 3277 KW - laser KW - target KW - proton KW - acceleration KW - plasma DA - 2017/05 PY - 2017 SN - 978-3-95450-182-3 DO - 10.18429/JACoW-IPAC2017-WEPVA012 UR - http://jacow.org/ipac2017/papers/wepva012.pdf ER -