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TY - CONF AU - Chaikovska, I. AU - Artru, X. AU - Chehab, R. AU - Furukawa, K. AU - Guler, H. AU - Kamitani, T. AU - Kubytskyi, V. AU - Miyahara, F. AU - Rodin, V. AU - Satoh, M. AU - Seimiya, Y. AU - Sievers, P. AU - Suwada, T. ED - Schaa, Volker RW ED - Arduini, Gianluigi ED - Pranke, Juliana ED - Seidel, Mike ED - Lindroos, Mats TI - Experimental Activities on High Intensity Positron Sources Using Channeling J2 - Proc. of IPAC2017, Copenhagen, Denmark, 14â19 May, 2017 C1 - Copenhagen, Denmark T2 - International Particle Accelerator Conference T3 - 8 LA - english AB - The positron source under investigation is using channeling radiation of multi-GeV electrons in a tungsten crystal. The radiated photons are impinging on the amorphous targets creating e⁺e⁻ pairs. A dipole magnet between the crystal-radiator and the amorphous-converter allows the charged particles to be swept off and only emitted photons to generate e⁺e⁻ pairs in the converter. Granular targets of different thicknesses, made of small tungsten spheres, have been recently investigated as a target-converter. This paper is describing the experimental studies conducted at the KEKB linac with such device. After the description of the experimental set-up and beam parameters, the measurement methods and preliminary results are presented. PB - JACoW CP - Geneva, Switzerland SP - 2910 EP - 2913 KW - positron KW - target KW - electron KW - photon KW - experiment DA - 2017/05 PY - 2017 SN - 978-3-95450-182-3 DO - 10.18429/JACoW-IPAC2017-WEPIK002 UR - http://jacow.org/ipac2017/papers/wepik002.pdf ER -