Accelerator
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Elettra 2.0 will deliver a significant increase in brightness by replacing the current double-bend magnet lattice of the storage ring with a new multi-bend achromat lattice, specifically the S6BA-E (symmetric six-bend enhanced) magnet structure. This upgrade, combined with advanced undulator, wiggler and superbend sources, state-of-the-art hardware, and improved beamline instrumentation, will enhance the performance of all existing experimental techniques while enabling the development of innovative methods beyond the capabilities of the current facility. The accelerator upgrade focuses on transforming the storage ring lattice into a six-bend achromat with a 12-fold symmetry design optimized to operate at 2.4 GeV. This includes novel reverse bends to optimize energy dispersion and four out of six transverse and longitudinal focusing dipoles (B80) per achromat, which will significantly reduce emittance by a factor of approximately 48. Initially, the accelerator will also operate at 2.0 GeV for a transitional period to allow partner institutions sufficient time to upgrade their beamline instrumentation. At present, the use of permanent magnets is not feasible, though they are being considered for future implementation as part of the I.FAST project, which aims to replace the electromagnet dipoles (B80) with permanent magnet solutions. The upgraded optics will also support transverse deflecting cavities (crab cavities), enabling the generation of fully coherent 1 ps FWHM pulses. This capability is particularly beneficial for time-resolved experiments that require high repetition rates and moderate intensity. Details of the upgraded accelerator optics, operational parameters at both energy levels, comparisons with the current machine, and the projected brilliance and coherence improvements (excluding the effects of insertion devices) are presented here. |
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Last Updated on Friday, 22 November 2024 14:39
