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TY - CONF AU - Wu, Wu,M.J. AU - Geng, Y.X. AU - Liao, Q. AU - Lin, C. AU - Lu, H.Y. AU - Lu, Y.R. AU - Ma, W.J. AU - Shou, Y.R. AU - Xu, X. AU - Yan, X.Q. AU - Zhao, Y.Y. AU - Zhu, J.G. AU - Zhu, K. ED - Koscielniak, Shane ED - Satogata, Todd ED - Schaa, Volker RW ED - Thomson, Jana TI - Preliminary Emittance Measurement of Laser Driven Proton Beam Employing a Quadruple Triplet Magnet 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 - The Compact Laser Plasma Accelerator (CLAPA) has been built recently at Peking University, which composed of a 200TW laser acceleration platform and a beam line system. Proton with energy spread of <1%, up to 10 pC charge and different energies below 10 MeV have been produced and transported to the irradiation platform. Emittance is a critical parameter for beam transportation. The preliminary emittance measurement has been per-formed for CLAPA's proton beams using the quadrupole scan technique (QST). In the experiment, the focal spot size of the proton beam was changed by scanning the current of a quadrupole triplet magnet. The result shows that the normalized emittance is smaller than 0.01 mm·mrad for 5 MeV laser driven protons, which is on the same level of the previously reported work. PB - JACoW Publishing CP - Geneva, Switzerland SP - 3818 EP - 3820 DA - 2018/06 PY - 2018 SN - 978-3-95450-184-7 DO - 10.18429/JACoW-IPAC2018-THPAL071 UR - http://jacow.org/ipac2018/papers/thpal071.pdf ER -