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| MOPLS113 |
Commissioning of the ALTO 50 MeV Electron Linac
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825 |
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- J. Lesrel, J. Arianer, M. Arianer, O. Bajeat, J-M. Buhour, H. Bzyl, F. Carrey, M. Chabot, J.-L. Coacolo, T. Corbin, H. Croizet, J.-M. Curaudeau, F. Doizon, M. Ducourtieux, J.-M. Dufour, S. Essabaa, D. Grialou, C. Joly, M. Kaminski, H. Lefort, B. Lesellier, G. Magneney, L. Mottet, Y. Ollivier, C. Planat, M. Raynaud, Y. Richard, A. Said, A. Semsoum, F. Taquin, C. Vogel
IPN, Orsay
- G. Bienvenu, J-N. Cayla, M. Desmons
LAL, Orsay
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The ALTO 50 MeV electron linac is dedicated to the production of neutron-rich radioactive nuclei using the photo-fission process and the optimisation of the target-ion source system for SPIRAL 2 and Eurisol projects. A description of the accelerator consisting in 3 Mev injector (old test station of LAL), LIL accelerating structure, RF power plant, beam line, control system and diagnostics will be given. Specified and measured beam parameters will be compared to show the performance for the photo-fission and eventually other applications.
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| WEPLS059 |
The PHIN Photoinjector for the CTF3 Drive Beam
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2517 |
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- R. Losito, H.-H. Braun, N. Champault, E. Chevallay, V. Fedosseev, A. Kumar, A.M. Masi, G. Suberlucq
CERN, Geneva
- G. Bienvenu, B.M. Mercier, C.P. Prevost, R. Roux
LAL, Orsay
- M. Divall, G.J. Hirst, G. Kurdi, W. E. Martin, I. O. Musgrave, I. N. Ross, E. L. Springate
CCLRC/RAL, Chilton, Didcot, Oxon
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A new photoinjector for the CTF3 drive beam has been designed and is now being constructed by a collaboration among LAL, CCLRC and CERN within PHIN, the second Joint Research Activity of CARE. The photoinjector will provide a train of 2332 pulses at 1.5 GHz with a complex timing structure (sub-trains of 212 pulses spaced from one another by 333 ps or 999 ps) to allow the frequency multiplication scheme, which is one of the features of CLIC, to be tested in CTF3. Each pulse of 2.33 nC will be emitted by a Cs2Te photocathode deposited by a co-evaporation process to allow high quantum efficiency in operation (>3% for a minimum of 40 h). The 3 GHz, 2 1/2 cell RF gun has a 2 port coupler to minimize emittance growth due to asymmetric fields, racetrack profile of the irises and two solenoids to keep the emittance at the output below 20 pi.mm.mrad. The laser has to survive very high average powers both within the pulse train (15 kW) and overall (200 W before pulse slicing). Challenging targets are also for amplitude stability (<0.25% rms) and time jitter from pulse to pulse (<1ps rms). An offline test in a dedicated line is foreseen at CERN in 2007.
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