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TY - CONF AU - Bruni, C. AU - Baynard, E. AU - Cayla, J-N. AU - Chancé, S. AU - Chaumat, V. AU - Delerue, N. AU - ElKamchi, N. AU - Lepercq, P. AU - Lucas, B. AU - Neveu, O. AU - Pittman, M. AU - Purwar, H. AU - Vinatier, T. ED - Boland, Mark ED - Tanaka, Hitoshi ED - Button, David ED - Dowd, Rohan ED - Schaa, Volker RW ED - Tan, Eugene TI - Short Bunch Experiment at EXALT Facility J2 - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019 CY - Melbourne, Australia T2 - International Particle Accelerator Conference T3 - 10 LA - english AB - Nowdays, different applications required short bunches, with low energy spread and low emittances. On EXALT facility, we perform an experiment with a short (few100 femtosecond) laser pulse on a photocathode in a 3 GHz RF gun. We perform the measurement of the single photon emission process with a copper cathode. We show that the longitudinal photoinjector model via transfer matrix is suitable for the reconstruction of the bunch duration even in short pulse mode with an increased accurracy charge below 20 pC. We clearly measure the parabolic profile in the energy spectrum resulting from blow out phenomena at the cathode due to strong space charge forces. Measurements are also compared with the Astra simulations. PB - JACoW Publishing CP - Geneva, Switzerland SP - 3100 EP - 3102 KW - laser KW - cathode KW - experiment KW - electron KW - gun DA - 2019/06 PY - 2019 SN - 978-3-95450-208-0 DO - DOI: 10.18429/JACoW-IPAC2019-WEPTS007 UR - http://jacow.org/ipac2019/papers/wepts007.pdf ER -