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Commissioning of the hybrid superconducting/normal conducting RF system in the Diamond storage ring

DOI: 10.18429/JACoW-IPAC2018-THPMF007 DOI Help

Authors: C. Christou (Diamond Light Source) , A. G. Day (Diamond Light Source) , P. Gu (Diamond Light Source) , P. J. Marten (Diamond Light Source) , S. A. Pande (Diamond Light Source) , D. Spink (Diamond Light Source) , A. Tropp (Diamond Light Source)
Co-authored by industrial partner: No

Type: Conference Paper
Conference: 9th International Particle Accelerator Conference
Peer Reviewed: No

State: Published (Approved)
Published: June 2018

Open Access Open Access

Abstract: Two 500 MHz HOM damped normal conducting cavities have been installed in the Diamond storage ring to ensure continuity of operation of Diamond in the event of a failure of one of the two existing superconducting cavities. Following receipt from the manufacturer, the cavities were incorporated into an assembly including vacuum pumping, cooling and interlocked diagnostics and then tested for vacuum integrity and RF performance. Both cavities were then conditioned up to high power in Diamond's RF test facility before being installed in the storage ring in August and November 2017. Conditioning and operation has been carried out using a new digital LLRF system. Results of acceptance tests and commissioning with power and beam are presented, together with the current status of the hybrid RF system and options for further improvement of the system in the near future.

Journal Keywords: cavity; storage-ring; operation; LLRF; HOM

Subject Areas: Technique Development

Technical Areas: RF