Electromagnetic wiggler technology development at the Lawrence Livermore National Laboratory

Deis, G.A.; Burns, Michael J.; Christensen, T.; Coffield, F.E.; Kulke, B.; Prosnitz, D.; Scharlemann, E.T.; Halbach, K.

doi:10.1109/20.11393

Cited by 7 publications

(2 citation statements)

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“…Our FEL experiment, 1 which is currently in operation at the Lawrence Livermore National Laboratory (LLNL), is intended to examine the physics of high-efficiency induction-linac free-electron lasers (IFELs) operating near the visible regime. This experiment employs the Advanced Test Accelerator (ATA) to provide a 50-MeV, 3-kA, 50-ns electron beam, which is used to amplify an input 0.25-to 50-] C0 2 laser pulse within the wiggler.…”

Section: Introductionmentioning

confidence: 99%

A long electromagnetic wiggler for the PALADIN free-electron laser experiments

et al. 1988

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We have designed, built, and tested a 25.6-m-long wiggler for a free-electron-laser (FEL) experiment. It is a DC iron-core electromagnetic wiggler that incorporates a number of important and unique features. Permanent magnets are used to suppress saturation in the iron and extend the linear operating range. Steering-free excitation allows real-time adjustment of the field taper without causing beam steering. Wiggle-plane focusing is produced by curved pole tips. The magnitude of random pole-topole field errors is minimized by a mechanical design con cept that reduces tolerance stackup in critical locations. To date, we have tested 15 m of this wiggler, and our mea surements have shown exceptionally low levels of random Introduction Our FEL experiment, 1 which is currently in operation at the Lawrence Livermore National Laboratory (LLNL), is intended to examine the physics of high-efficiency induction-linac free-electron lasers (IFELs) operating near the visible regime. This experiment employs the Advanced Test Accelerator (ATA) to provide a 50-MeV, 3-kA, 50-ns electron beam, which is used to amplify an input 0.25-to 50-] C0 2 laser pulse within the wiggler. The wiggler that we have designed, built, tested, and partially installed for this experiment has a number of unique features. Table 1 summarizes some of the most important overall specifica tions and features that are discussed in more detail below.

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Section: Introductionmentioning

confidence: 99%

A long electromagnetic wiggler for the PALADIN free-electron laser experiments

et al. 1988

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“…Thus, despite a strong base of experience in E&M (DC) technology at LLNL [3] and a prior study of pure PM structures for a longer-wavelength LCLS [4], the r&d…”

Section: Introductionmentioning

confidence: 99%