Keyword: photon
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MOPMU009 The Diamond Control System: Five Years of Operations controls, EPICS, operation, interface 442
  • M.T. Heron
    Diamond, Oxfordshire, United Kingdom
  Commissioning of the Diamond Light Source accelerators began in 2005, with routine operation of the storage ring commencing in 2006 and photon beamline operation in January 2007. Since then the Diamond control system has provided a single interface and abstraction to (nearly) all the equipment required to operate the accelerators and beamlines. It now supports the three accelerators and a suite of twenty photon beamlines and experiment stations. This paper presents an analysis of the operation of the control system and further considers the developments that have taken place in the light of operational experience over this period.  
MOPMU012 The Local Control System of an Undulator Cell for the European XFEL undulator, controls, quadrupole, electron 450
  • S. Karabekyan, R. Pannier, J. Pflüger
    European XFEL GmbH, Hamburg, Germany
  • N. Burandt, J. Kuhn
    Beckhoff Automation GmbH, Verl, Germany
  • A. Schöps
    DESY, Hamburg, Germany
  The European XFEL project is a 4th generation light source. The first beam will be delivered in the beginning of 2015. At the project startup three light sources SASE 1, SASE 2 and SASE 3 will produce spatially coherent ≤80fs short photon pulses with a peak brilliance of 1032-1034 photons/s/mm2/mrad2/0.1% BW in the energy range from 0.26 to 24 keV at an electron beam energy 14 GeV. The Undulator systems are used to produce photon beams for SASE 1, SASE 2 and SASE 3. Each undulator system consists of an array of undulator cells installed in a row along the electron beam. The undulator cell itself consists of a planar undulator, a phase shifter, magnetic field correction coils and a quadrupole mover. The local control system of the undulator cell is based on industrial components produced by Beckhoff and on PLC software implemented in TwinCAT system. Four servo motors are installed on each undulator and control the gap between girders with micrometer accuracy. One stepper motor is used for phase shifter control, and two other stepper motors control the position of the quadrupole magnet. The current of magnetic field correction coils as well as the gap of the phase shifter are adjustable as a function of the undulator gap. The high level of synchronization (<<1μs) for the complete undulator system (for instance SASE2 with 35 undulator cells in total) could be achieved due to implementation of the EtherCAT fieldbus system in the local control. The description of the hardware components and the software functionality of the local control system will be discussed.  
poster icon Poster MOPMU012 [1.163 MB]  
WEPKS009 Integrating Gigabit Ethernet Cameras into EPICS at Diamond Light Source EPICS, Ethernet, controls, software 794
  • T.M. Cobb
    Diamond, Oxfordshire, United Kingdom
  At Diamond Light Source we have selected Gigabit Ethernet cameras supporting GigE Vision for our new photon beamlines. GigE Vision is an interface standard for high speed Ethernet cameras which encourages interoperability between manufacturers. This paper describes the challenges encountered while integrating GigE Vision cameras from a range of vendors into EPICS.  
poster icon Poster WEPKS009 [0.976 MB]  
WEPMU003 The Diamond Machine Protection System controls, interlocks, vacuum, interface 1051
  • M.T. Heron, Y.S. Chernousko, P. Hamadyk, S.C. Lay, N. Rotolo
    Diamond, Oxfordshire, United Kingdom
  Funding: Diamond Light Source LTD
The Diamond Light Source Machine Protection System manages the hazards from high power photon beams and other hazards to ensure equipment protection on the booster synchrotron and storage ring. The system has a shutdown requirement, on a beam mis-steer, of under 1msec and has to manage in excess of a thousand interlocks. This is realised using a combination of bespoke hardware and programmable logic controllers. The structure of the Machine Protection System will be described, together with operational experience and developments to provide post-mortem functionality.
poster icon Poster WEPMU003 [0.694 MB]