AI Article Synopsis
- Collinear wakefield acceleration can produce very high acceleration gradients, prompting research to improve the transformer ratio (TR), which measures the efficiency of acceleration behind a drive bunch.
- To maximize TR, researchers have shifted focus to creating asymmetrical drive bunch distributions since conventional symmetrical ones limit TR to below 2.
- This study showcases the use of an emittance-exchange method to shape the drive bunch, achieving an experimental TR of about 5 in a dielectric wakefield accelerator.
Article Abstract
Collinear wakefield acceleration has been long established as a method capable of generating ultrahigh acceleration gradients. Because of the success on this front, recently, more efforts have shifted towards developing methods to raise the transformer ratio (TR). This figure of merit is defined as the ratio of the peak acceleration field behind the drive bunch to the peak deceleration field inside the drive bunch. TR is always less than 2 for temporally symmetric drive bunch distributions and therefore recent efforts have focused on generating asymmetric distributions to overcome this limitation. In this Letter, we report on using the emittance-exchange method to generate a shaped drive bunch to experimentally demonstrate a TR≈5 in a dielectric wakefield accelerator.
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| http://dx.doi.org/10.1103/PhysRevLett.120.114801 | DOI Listing |
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