Experimental Study on Generation of Single-electron Emitter with Minimal Normalized Emissivity Based on Self-modulated Laser Wake Field Accelerating Principle View Homepage


Ontology type: schema:MonetaryGrant     


Grant Info

YEARS

2013-2016

FUNDING AMOUNT

300000 CNY

ABSTRACT

One crucial requirement for realizing next-generation synchrotron light sources, colliders and linac-based free-electron lasers (FELs) is high brightness electron sources which possess extremely high-peak current and small normalized emittance. This is a tremendous challenge to traditional electron guns due to their relatively low accelerating gradient and strong bunch self-field interaction. Meanwhile, for its ultrahigh accelerating gradient and natural advantages in bunch length and emittance, laser plasma accelerators have the potential to make some breakthroughs in this subject. Unlike most previous LWFA experiments under "bubble" mechanisms, we plan to adopt Self-Modulate LWFA (SM-LWFA) method which use small power laser facilities with high contrast and high repetition rate interacting with moderate plasmas to generate monoenergetic electron bunches with ultra-low emittance. SM-LWFA was once thought to be unsuited for the generation of monoenergetic electron beams. But some recent successful experiments including ours have preliminarily proved its feasibility. Moreover, we found in simulations that the mechanism can smoothly shift from SM-LWFA to bubble acceleration with some special laser plasma parameters. By taking both advantages of these two mechanisms, we achieved monoenergetic electron bunches with More... »

URL

http://npd.nsfc.gov.cn/projectDetail.action?pid=11305185

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