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Poster communications

CERN PSB beam tests of CNAO Synchrotron's digital LLRF

Abstract : The Italian National Centre for Oncological hAdrontherapy (CNAO), in its final construction phase, uses proton and carbon ion beams to treat patients affected by solid tumours. At the heart of CNAO is a 78- meter circumference synchrotron that accelerates particles to up to 400 MeV/u. The synchrotron relies on a digital LLRF system based upon Digital Signal Processors (DSPs) and Field Programmable Gate Array (FPGA). This system implements cavity servoing and beam control capabilities, such as phase and radial loops. Beam tests of the CNAO synchrotron LLRF system were carried out at CERN's Proton Synchrotron Booster (PSB) in autumn 2007, to verify the combined DSP/FPGA architecture and the beam control capabilities. For this, a prototype version of CNAO's LLRF system was adapted to the PSB requirements. This paper outlines the prototype system layout and describes the tests carried out and their results. In particular, system architecture and beam control capabilities were successfully proven by comparison with the PSB operational beam control system and with the help of several existing beam diagnostic systems.
Document type :
Poster communications
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Contributor : Emmanuelle Vernay <>
Submitted on : Wednesday, July 2, 2008 - 6:35:48 PM
Last modification on : Thursday, November 19, 2020 - 12:58:50 PM


  • HAL Id : in2p3-00292879, version 1




M. E. Angoletta, A. Findlay, O. Bourrion, R. Foglio, D. Tourres, et al.. CERN PSB beam tests of CNAO Synchrotron's digital LLRF. 11th European Particle Accelerator Conference EPAC'08, Jun 2008, Genoa, Italy. Joint Accelerator Conferences Website, pp.1431-1433, 2008. ⟨in2p3-00292879⟩



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