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TY - UNPB AU - Marion, P. AU - Biasci, J.C. AU - Brochard, T. AU - Eybert, L. AU - Goirand, L. ED - Schaa, Volker RW ED - Tavakoli, Keihan ED - Tilmont, Manuel TI - Status of the ESRF EBS Storage Ring Engineering and Construction J2 - Proc. of MEDSI2018, Paris, France, 25-29 June 2018 C1 - Paris, France T2 - Mechanical Engineering Design of Synchrotron Radiation Equipment and Instrumentation T3 - 10 LA - english AB - In the frame of its Extremely Brilliant Source (EBS) upgrade, the ESRF is preparing the replacement of its existing storage ring by a new ring based on a 7-bend achromat lattice enabling to reduce the electron beam horizontal emittance by a factor 30. The project involves challenging engineering requirements due to the large number of magnets, space constraints and specified geometrical precision. In order to validate the feasibility of this very compact assembly with real parts, a Mock-up of a complete EBS cell was assembled in 2017. The preparation of fully equipped girders with all components assembled, aligned and tested was started in October 2017 and is progressing as a rate of 3 per week. The main technical achievements and issues encountered during manufacturing of magnets, girders, chambers and absorbers will be presented, together with an outline of the planned dismantling and installation phases, scheduled from December 2018. This presentation is given on behalf of the ESRF EBS engineering team: J-C Biasci, J Borrel, T Brochard, F Cianciosi, D Coulon, Y Dabin, L Eybert, L Goirand, M Lesourd, N Louis, T Mairs, B Ogier, J Pasquaud, P Van Vaerenbergh, F Villar. PB - JACoW Publishing CP - Geneva, Switzerland ER -