Speaker
Description
The ESRF's 6 GeV storage ring (SR), commissioned in 1992 and known as the world's first third-generation light source, will be shut down in December 2018 after more than 24 years of reliable user operation. Within one year it will be replaced by an ultra-low emittance 6 GeV ring, which will provide the ESRF with the first Extremely Brilliant Source (EBS) for hard X-rays. Almost all of the parts for the new ring have been delivered and the complete assembly of subsystems is progressing as planned. This will allow a short installation phase ready for commissioning to start in November 2019.
A review of recent RF operation experience with the existing five-cell cavities, two prototype HOM damped single cell copper cavities, RF klystrons and solid state power amplifiers (SSPA) will be presented as well as the status of the RF system upgrade for the new EBS ring. The 12 new series fabricated HOM damped cavities for EBS were all successfully conditioned to 750 kV for a nominal working point at 500 kV, even though some technical problems were encountered during the fabrication of the cavities and their auxiliaries. A report will also be made on the successful identification and mitigation of the technological and mechanical issues encountered throughout the process.