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TY - CONF AU - Couprie, M.-E. AU - Andriyash, I.A. AU - André, T. AU - Benabderrahmane, C. AU - Bielawski, S. AU - Blache, F. AU - Bouvet, F. AU - Briquez, F. AU - Corde, S. AU - Dietrich, Y. AU - Duval, J.P. AU - El Ajjouri, M. AU - Evain, C. AU - Gautier, J. AU - Ghaith, A. AU - Goddet, J.-P. AU - Herbeaux, C. AU - Hubert, N. AU - Khojoyan, M. AU - Kitégi, C.A. AU - Kononenko, O.S. AU - Labat, M. AU - Lambert, G. AU - Leclercq, N. AU - Lestrade, A. AU - Loulergue, A. AU - Malka, V. AU - Marcouillé, O. AU - Marteau, F. AU - Oumbarek Espinos, D. AU - Rommeluère, P. AU - Roussel, E. AU - Sebdaoui, M. AU - Smartzev, S. AU - Szwaj, C. AU - Ta Phuoc, K. AU - Tafzi, A. AU - Tavakoli, K.T. AU - Thaury, C. AU - Valléau, M. ED - Schaa, Volker R.W. ED - Decking, Winfried ED - Sinn, Harald ED - Geloni, Gianluca ED - Schreiber, Siegfried ED - Marx, Michaela TI - Progress Towards Laser Plasma Electron Based Free Electron Laser on COXINEL J2 - Proc. of FEL2019, Hamburg, Germany, 26-30 August 2019 CY - Hamburg, Germany T2 - Free Electron Laser Conference T3 - 39 LA - english AB - Laser plasma acceleration (LPA) with up to several GeV beam in very short distance appears very promising. The Free Electron Laser (FEL), though very challenging, can be viewed as a qualifying application of these new emerging LPAs. The energy spread and divergence, larger than from conventional accelerators used for FEL, have to be manipulated to fulfil the FEL requirements. On the test experiment COXINEL (ERC340015), the beam is controlled in a manipulation [1,2] line, using permanent magnet quadrupoles of variable strength  for emittance handing and a decompression chicane equipped with a slit for the energy selection, enabling FEL amplification for baseline reference parameters . The electron position and dispersion are independently adjusted . The measured spontaneous emission radiated by a 2 m long 18 mm period cryo-ready undulator exhibits the typical undulator spatio-spectral pattern, in agreement with the modelling of the electron beam travelling along the line and of the afferent photon generation. The wavelength is easily tuned with undulator gap variation. A wavelength stability of 2.6% is achieved. The undulator linewidth can be controlled. PB - JACoW Publishing CP - Geneva, Switzerland SP - 684 EP - 687 KW - laser KW - electron KW - plasma KW - undulator KW - FEL DA - 2019/11 PY - 2019 SN - 978-3-95450-210-3 DO - doi:10.18429/JACoW-FEL2019-THP048 UR - http://jacow.org/fel2019/papers/thp048.pdf ER -