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Singh, B.

Paper Title Page
WEPC070 Further Optimisation of the Diamond Light Source Injector 2157
 
  • C. Christou, J. A. Dobbing, V. C. Kempson, A. F.D. Morgan, B. Singh, S. J. Singleton
    Diamond, Oxfordshire
 
  The Diamond Light Source injector consists of a 100MeV linac and a 3GeV full-energy booster, and has been providing beam to the storage ring since September 2006. System optimisation has continued throughout the first year of user operation at Diamond. Beam losses on injection into both the booster and storage ring have been minimised by optimisation of operating parameters and the stabilisation of injection elements, particularly the elimination of a linac energy beat. High level software has been developed to monitor turn-by-turn BPM data, allowing booster chromaticity to be measured. The same software generates an automatic log of storage ring frequency spectra on injection, enabling the parasitic measurement of storage ring tune, and can be used to provide information on storage ring impedance and chromaticity. Further optimisation of single bunch injection has been carried out in preparation for top-up operation, and top-up capability has been extended to provide a single bunch filling mode for the storage ring. Injection into the booster at low energy has been demonstrated, providing a mode of operation for the injection system in the event of a linac klystron failure.  
WEPC119 First Year's Experience of Diamond Insertion Devices 2285
 
  • E. C. Longhi, R. T. Fielder, I. P.S. Martin, J. C. Schouten, B. Singh
    Diamond, Oxfordshire
  • R. Bartolini
    JAI, Oxford
 
  Diamond was commissioned at 3GeV with seven insertion devices (IDs) already installed. The phase 1 IDs include five in-vacuum permanent magnet undulators, an APPLE–2 variable polarization device, and a superconducting wiggler. Since initial commissioning of the ring, three more in-vacuum undulators have been installed, and another three devices will be installed in the coming year. In this paper, we describe commissioning, characterizing, and operating with these IDs.  
THPC025 Further Advances in Understanding and Optimising Beam Dynamics in the Diamond Storage Ring 3032
 
  • I. P.S. Martin, R. T. Fielder, E. C. Longhi, B. Singh
    Diamond, Oxfordshire
  • R. Bartolini
    JAI, Oxford
 
  We report the results of recent beam dynamics studies of the Diamond storage ring. These studies were aimed at both improving our understanding of the machine operation as well as establishing a reliable, well corrected lattice with long lifetime and high injection efficiency suitable for later top-up operation. Particular attention has been given to measuring and controlling the linear optics of the lattice, to determining the various contributions to the overall beam lifetime and to optimising the sextupole strengths for good on and off momentum dynamic aperture. For each topic, detailed comparisons with model predictions are also described.