• F. Sannibale, K.M. Baptiste, J.N. Corlett, T.M. Huang, S. Kwiatkowski, D. Li, J. Qiang, J.W. Staples, R.P. Wells, L. Yang, A. Zholents
  LBNL, Berkeley, California
• J.W. McKenzie
  STFC/DL/ASTeC, Daresbury, Warrington, Cheshire

Funding: This work was supported by the Director of the Office of Science of the US Department of Energy under Contract no. DEAC02-05CH11231

A high-brightness high-repetition rate photo-injector based on a normal conducting 187 MHz RF cavity design capable of CW operation is under construction at the Lawrence Berkeley National Laboratory. A cathode field of ~20 MV/m accelerates electron bunches to 750 keV with peak current, energy spread and transverse emittance suitable for FEL and ERL applications. A vacuum load-lock mechanism is included and a 10 picoTorr range vacuum capability allows most types of photocathodes to operate at a MHz repetition rate with present laser technology. The status of the project is presented.

• R.P. Walker, R. Bartolini, C. Christou, J.H. Han, J. Kay, I.P.S. Martin, G. Rehm, J. Rowland
  Diamond, Oxfordshire
• D. Angal-Kalinin, M.A. Bowler, J.A. Clarke, D.J. Dunning, B.D. Fell, A.R. Goulden, F. Jackson, S.P. Jamison, J.K. Jones, K.B. Marinov, P.A. McIntosh, J.W. McKenzie, B.L. Militsyn, A.J. Moss, B.D. Muratori, S.M. Pattalwar, M.W. Poole, R.J. Smith, S.L. Smith, N. Thompson, P.H. Williams
  STFC/DL/ASTeC, Daresbury, Warrington, Cheshire
• N. Bliss, G.P. Diakun, M.D. Roper
  STFC/DL, Daresbury, Warrington, Cheshire
• J.L. Collier, C.A. Froud, G.J. Hirst, E. Springate
  STFC/RAL, Chilton, Didcot, Oxon
• J.P. Marangos, J.W.G. Tisch
  Imperial College of Science and Technology, Department of Physics, London
• B.W.J. McNeil
  USTRAT/SUPA, Glasgow
• H.L. Owen
  UMAN, Manchester

The New Light Source (NLS) project was launched in April 2008 by the UK Science and Technology Facilities Council (STFC) to consider the scientific case and develop a conceptual design for a possible next generation light source based on a combination of advanced conventional laser and free-electron laser sources. Following a series of workshops and a period of scientific consultation, the science case was approved in October 2008 and the go-ahead given to continue the project to the design stage. In November the decision was taken that the facility will be based on cw superconducting technology in order to provide the best match to the scientific objectives. In this paper we present the source requirements, both for baseline operation and with possible upgrades, and the current status of the design of the accelerator driver and free-electron laser sources to meet those requirements.

• S.L. Smith, R. Bate, C.D. Beard, M.A. Bowler, R.K. Buckley, S.R. Buckley, J.A. Clarke, P.A. Corlett, M. Dufau, D.J. Dunning, B.D. Fell, P. Goudket, A.R. Goulden, S.A. Griffiths, J.D. Herbert, C. Hill, F. Jackson, S.P. Jamison, J.K. Jones, L.B. Jones, A. Kalinin, N. Marks, P.A. McIntosh, J.W. McKenzie, K.J. Middleman, B.L. Militsyn, A.J. Moss, B.D. Muratori, J.F. Orrett, S.M. Pattalwar, P.J. Phillips, M.W. Poole, Y.M. Saveliev, D.J. Scott, B.J.A. Shepherd, R.J. Smith, N. Thompson, B. Todd, T.M. Weston, A.E. Wheelhouse, P.H. Williams
  STFC/DL/ASTeC, Daresbury, Warrington, Cheshire
• J.R. Alexander, P. Atkinson, N. Bliss, I. Burrows, G. Cox, P.A.D. Dickenson, A. Gallagher, K.D. Gleave, J.P. Hindley, B.G. Martlew, I.D. Mullacrane, A. Oates, P.D. Quinn, D.G. Stokes, J. Strachan, P.J. Warburton, C.J. White
  STFC/DL, Daresbury, Warrington, Cheshire
• W.R. Flavell, E.A. Seddon
  UMAN, Manchester
• F.G. Gabriel
  FZD, Dresden
• C. Gerth
  DESY, Hamburg
• F.E. Hannon, C. Hernandez-Garcia, K. Jordan, G. Neil
  JLAB, Newport News, Virginia
• K. Harada
  KEK, Ibaraki
• P. Harrison, D.J. Holder, G.M. Holder, P. Weightman
  The University of Liverpool, Liverpool
• S.F. Hill, G. Priebe, R.V. Rotheroe, M. Surman
  STFC/DL/SRD, Daresbury, Warrington, Cheshire
• G.J. Hirst, P.G. Huggard
  STFC/RAL, Chilton, Didcot, Oxon
• P. vom Stein
  ACCEL, Bergisch Gladbach

ALICE (Accelerators and Lasers in Combined Experiments) is a 35 MeV energy recovery linac based light source. ALICE is being developed as an experimental test-bed for a broad suite of science and technology activities that make use of electron acceleration and ultra-short pulse laser techniques. This paper reports the progress made in accelerator commissioning and includes the results of measurement made on the commissioning beam. The steps taken to prepare the beam for short pulse operation as a driver for a Compton Back Scattered source and in preparation for the commissioning of the free electron laser are reported.

• J.D.A. Smith
  Cockcroft Institute, Warrington, Cheshire
• J. Kewley
  STFC/DL, Daresbury, Warrington, Cheshire
• C. Lingwood
  Cockcroft Institute, Lancaster University, Lancaster
• J.W. McKenzie
  STFC/DL/ASTeC, Daresbury, Warrington, Cheshire

This work reports on the developments of a computational infrastructure framework that aids achievement of computational research objectives. Examples from a broad range of accelerator problems will be presented, along with ways in which the workflow can be modified.

• J.W. McKenzie, B.D. Muratori, Y.M. Saveliev
  STFC/DL/ASTeC, Daresbury, Warrington, Cheshire

Results of designing of the extended ALICE injector with the aim to include a special dedicated diagnostic line are presented. The purpose of the diagnostic line is to characterise the low energy beam, before it enters the booster, as much as possible. A key component of the ALICE is the high brightness injector. The ALICE injector consists of a DC photocathode gun generating ~ 80 pC electron bunches at 350 keV. These bunches are then matched into a booster cavity which accelerates them to an energy of 8.35 MeV. In order to do this, three solenoids and a single-cell buncher cavity are used, together with the off-crest of the first booster cavity where the beam is still far from being relativistic. The performance of the injector has been studied using the particle tracking code ASTRA.