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Spatial Control of Photoemitted Electron Beams using a Micro-Lens-Array Transverse-Shaping Technique
- Publication Year :
- 2017
-
Abstract
- A common issue encountered in photoemission electron sources used in electron accelerators is the transverse inhomogeneity of the laser distribution resulting from the laser-amplification process and often use of frequency up conversion in nonlinear crystals. A inhomogeneous laser distribution on the photocathode produces charged beams with lower beam quality. In this paper, we explore the possible use of microlens arrays (fly-eye light condensers) to dramatically improve the transverse uniformity of the drive laser pulse on UV photocathodes. We also demonstrate the use of such microlens arrays to generate transversely-modulated electron beams and present a possible application to diagnose the properties of a magnetized beam.<br />Comment: arXiv admin note: text overlap with arXiv:1609.01661
- Subjects :
- Physics - Accelerator Physics
Subjects
Details
- Database :
- arXiv
- Publication Type :
- Report
- Accession number :
- edsarx.1707.08448
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevAccelBeams.20.103404