Delayed photo-emission model for beam optics codes
| Autor: | Nathan A. Moody, Kevin L. Jensen, Serguei Ovtchinnikov, Dimitrios Panagos, John Petillo |
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| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Physics Femtosecond pulse shaping Free electron model 010308 nuclear & particles physics business.industry Process Chemistry and Technology Laser 01 natural sciences Pulse shaping Photocathode Surfaces Coatings and Films Electronic Optical and Magnetic Materials Pulse (physics) law.invention Optics law 0103 physical sciences Materials Chemistry Physics::Accelerator Physics Electrical and Electronic Engineering business Instrumentation Ultrashort pulse Bandwidth-limited pulse |
| Zdroj: | Journal of Vacuum Science & Technology B, Nanotechnology and Microelectronics: Materials, Processing, Measurement, and Phenomena. 35:02C102 |
| ISSN: | 2166-2754 2166-2746 |
| DOI: | 10.1116/1.4968511 |
| Popis: | Future advanced light sources and x-ray free electron lasers require fast response from the photocathode to enable short electron pulse durations as well as pulse shaping, and so the ability to model delays in emission is needed for beam optics codes. The development of a time-dependent emission model accounting for delayed photoemission due to transport and scattering is given, and its inclusion in the particle-in-cell code MICHELLE results in changes to the pulse shape that are described. The model is applied to pulse elongation of a bunch traversing an rf injector, and to the smoothing of laser jitter on a short pulse. |
| Databáze: | OpenAIRE |
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