Author :
Berkvens, P. ; Biasci, J.C. ; Chavanne, J. ; Duru, P. ; Elleaume, P. ; Farvacque, L. ; Günzel, T. ; Hardy, L. ; Jacob, J. ; Kersevan, R. ; Naylor, G. ; Papaphilipou, Y. ; Plouviez, E. ; Revol, J.-L. ; Ropert, A. ; Scheidt, K.
Abstract :
The ESRF has been operating for more than 10 years. As a result of the maintenance policy a high level of beam availability as well as a long beam time between failures has been maintained. In addition, a continuous effort is made to develop the machine further. The operation status and the experience gained with the recent upgrades are reported. It concerns: a) The successful operation with 5 in-vacuum undulators operated at a 5-6 mm magnetic gap; b) The implementation of a new hybrid type filling pattern which combines groups of bunches at full current and single bunch; c) The successful qualification of a 5 metre-long, 8 mm vertical aperture insertion device (ID) aluminum chamber coated with nonevaporable getter material; d) The evolution of the impedance with associated consequences on instability thresholds, following the installation of a number of low aperture insertion device chambers; e) The successful test of the SOLEIL superconducting cavity; f) The injection front end open in order to ensure a better thermal stability in the beamlines.
Keywords :
electron accelerators; particle beam bunching; particle beam diagnostics; particle beam injection; particle beam stability; storage rings; superconducting cavity resonators; wigglers; 5 m; 5 to 6 mm; 8 mm; ESRF; SOLEIL superconducting cavity; aluminum chamber; aperture insertion device; beamlines; bunches; hybrid type filling pattern; impedance; injection front end; instability thresholds; invacuum undulators; magnetic gap; Aluminum; Apertures; Availability; Filling; Magnetic devices; Magnetic materials; Qualifications; Superconducting magnets; Superconducting materials; Undulators;
