Picture of mobile phone running fintech app

Fintech: Open Access research exploring new frontiers in financial technology

Strathprints makes available Open Access scholarly outputs by the Department of Accounting & Finance at Strathclyde. Particular research specialisms include financial risk management and investment strategies.

The Department also hosts the Centre for Financial Regulation and Innovation (CeFRI), demonstrating research expertise in fintech and capital markets. It also aims to provide a strategic link between academia, policy-makers, regulators and other financial industry participants.

Explore all Strathclyde Open Access research...

Single-stage plasma-based correlated energy spread compensation for ultrahigh 6D brightness electron beams

Manahan, G.G. and Habib, A.F. and Scherkl, P. and Delinikolas, P. and Beaton, A. and Knetsch, A. and Karger, O. and Wittig, G. and Heinemann, T. and Sheng, Z.M. and Cary, J.R. and Bruhwiler, D.L. and Rosenzweig, J.B. and Hidding, B. (2017) Single-stage plasma-based correlated energy spread compensation for ultrahigh 6D brightness electron beams. Nature Communications, 8 (15705). ISSN 2041-1723

[img]
Preview
Text (Manahan-etal-NC-2017-Single-stage-plasma-based-correlated-energy-spread-compensation)
Manahan_etal_NC_2017_Single_stage_plasma_based_correlated_energy_spread_compensation.pdf
Final Published Version
License: Creative Commons Attribution 4.0 logo

Download (1MB) | Preview

Abstract

Plasma photocathode wakefield acceleration combines energy gains of tens of GeV m−1 with generation of ultralow emittance electron bunches, and opens a path towards 5D-brightness orders of magnitude larger than state-of-the-art. This holds great promise for compact accelerator building blocks and advanced light sources. However, an intrinsic by-product of the enormous electric field gradients inherent to plasma accelerators is substantial correlated energy spread—an obstacle for key applications such as free-electron-lasers. Here we show that by releasing an additional tailored escort electron beam at a later phase of the acceleration, when the witness bunch is relativistically stable, the plasma wave can be locally overloaded without compromising the witness bunch normalized emittance. This reverses the effective accelerating gradient, and counter-rotates the accumulated negative longitudinal phase space chirp of the witness bunch. Thereby, the energy spread is reduced by an order of magnitude, thus enabling the production of ultrahigh 6D-brightness beams.