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EPAC 2000

Name: EPAC 2000

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Date: 2000-01-01

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Created at: Fri Jul 27 23:53:36 -0700 2007

Updated at: Fri Jul 27 23:53:36 -0700 2007

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2 papers from the conference:

title: New design study and related experimental program for the LCLS RF photoinjector
format: conference proceeding
conference: EPAC 2000
year: 2000
11 authors: M. Ferrario | P.R. Bolton | Clendenin, J. E. | Dowell, D. H. | Gierman, S. M. | M. E. Hernandez | D. C. Nguyen | D. T. Palmer | J.B. Rosenzweig | Schmerge, J. F. | L. Serafini
abstract: We report the results of a recent beam dynamics study, motivated by the need to redesign the LCLS photoinjector, that lead to the discovery of a new effective working point for a split RF photoinjector. We consider the emittance compensation regime of a space charge beam: by increasing the solenoid strength, the emittance evolution shows a double minimum behavior in the drifting region. If the booster is located where the relative emittance maximum and the envelope waist occur, the second emittance minimum can be shifted to the booster exit and frozen at a very low level (0.3 mm-mrad for a 1 nC flat top bunch), to the extent that the invariant envelope matching conditions are satisfied. Standing Wave Structures or alternatively Traveling Wave Structures embedded in a Long Solenoid are both candidates as booster linac. A careful measurement of the emittance evolution as a function of position in the drifting region is necessary to verify the computation and to determine experimentally the proper position of the booster cavities. The new design study and supporting experimental program under way at the SLAC Gun Test Facility are discussed.
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title: IFEL experiment at Neptune Lab
format: conference proceeding
conference: EPAC 2000
year: 2000
2 authors: P. Musumeci | C. Pellegrini
abstract: We present a two stage Inverse Free Electron Laser accelerator proposed for construction at the UCLA Neptune Lab. Proof-of-principle experiments on the IFEL scheme have been carried out successfully. This experiment is intended to achieve a 100 MeV energy gain, staging two IFEL modules. It will use a 16 MeV electron beam, a 1 TW CO2 laser and two different tapered helical undulators. The problem of refocusing both laser and electron beam is analysed in detail. A preliminary beam-line layout and numerical simulations are presented.
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