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RPPT019 |
Start to End Simulations of the ERL Prototype at Daresbury Laboratory
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1643 |
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- C. Gerth, M.A. Bowler, B.D. Muratori, H.L. Owen, N. Thompson
CCLRC/DL/ASTeC, Daresbury, Warrington, Cheshire
- B. Faatz
DESY, Hamburg
- B.W.J. McNeil
Strathclyde University, Glasgow
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Daresbury Laboratory is currently building an Energy Recovery Linac Prototype (ERLP) that will serve as a research and development facility for the study of beam dynamics and accelerator technology important to the design and construction of the proposed 4th Generation Light Source (4GLS) project. Two major objectives of the ERLP are the demonstration of energy recovery and of energy recovery from a beam disrupted by an FEL interaction as supplied by an infrared oscillator system. In this paper we present start-to-end simulations of the ERLP including such an FEL interaction. The beam dynamics in the high-brightness injector, which consists of a DC photocathode gun and a superconducting booster, have been modelled using the particle tracking code ASTRA. After the booster the particles have been tracked with the code GPT which includes space charge in the injector line at 8.3 MeV. The 3D code GENESIS 1.3 was used to model the FEL interaction with the electron beam at 35 MeV.
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RPPT012 |
Layout of the Diagnostic Section for the European XFEL
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1285 |
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- C. Gerth, Mr. Roehrs, H. Schlarb
DESY, Hamburg
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Fourth generation synchrotron light sources, such as the European Free Electron Laser (XFEL) project, are based on an exponential gain of the radiation amplification in a single pass through a long undulator magnet. To initiate the FEL process and to reach staturation, precise monitoring and control of the electron beam parameters is mandatory. Most challenging are the longitudinal compression processes in magnetic chicanes of the high brightness electron bunch emitted from an RF photo-injector. To measure and control the beam properties after compression, careful consideration must be given to the design of a diagnostic section and the choice of beam monitors. In this paper, the proposed layout of the XFEL diagnostics beamline is discussed and emphasis is put on the possibility of monitoring on-line the slice energy spread, slice emittance and longitudinal bunch profile with high accuracy.
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RPPT020 |
Space Charge Effects for the ERL Prototype Injector Line at Daresbury Laboratory
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1676 |
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- B.D. Muratori, H.L. Owen
CCLRC/DL/ASTeC, Daresbury, Warrington, Cheshire
- C. Gerth
DESY, Hamburg
- M.J. de Loos, S.B. van der Geer
PP, Soest
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Daresbury Laboratory is currently building an Energy Recovery Linac Prototype (ERLP) that will operate at a beam energy of 35 MeV. In this paper we examine the space charge effects on the beam dynamics in the ERLP injector line. A Gaussian particle distribution is tracked with GPT (General Particle Tracer) through the injection line to the main linac to calculate the effect of 3Dspace charge in the dipoles. The nominal beam energy in the injection line is 8.3 MeV and the bunch charge 80 pC. The effects of space charge on the transverse and longitudinal emittance are studied for various electron beam parameter settings.
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