Author: Biasci, J.C.
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The Extremely Brilliant Source (EBS) Project  
  • J.C. Biasci
    ESRF, Grenoble, France
  The EBS project required the shutdown and dismantling of the existing storage ring, and the design, construction, and installation of a new synchrotron source in a limited period with minimal disruption to the ongoing user program. From 2015 to 2018, in addition to keeping the existing accelerator operational more than 1,000 magnets, 900 m of vacuum chambers, and several thousand other components were designed, procured, and pre-assembled. On December 10, 2018, ESRF stopped the beam of the original accelerator for just 17 months to dismantle the existing accelerator, install and commission the new one, before the start of beamlines program at the end of August 2020. The EBS produced its first stored beam as scheduled, thanks to ESRF staff and international teams who have worked tirelessly to make this possible. One of the major challenges of this upgrade program was to replace these 32 cells, within the existing infrastructure, by new ones whose magnet density made engineering much more complicated. The new ring comprises over 10 000 components, each precision-aligned to within 50 microns over the storage ring length. The timing of different activities and the coordination of teams during all phases was another challenge, but the expertise, team spirit, commitment and responsiveness of teams and management to deal with unforeseen situations or technical problems greatly contributed to the success of the project. After such a project, several lessons are to be learned, first it is necessary to capitalize on all the positive aspects, then technical issues needs to be analyzed, in order to keep the knowledge and expertise. This presentation will cover the different phases of the project by highlighting the difficulties encountered and the lessons to be learned.  
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