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By directing the laser-driven electromagnetic pulses along a helical path, one can achieve a travelling-field accelerator arrangement for simultaneous beam shaping and re-acceleration of laser-accelerated protons. The dynamics of guided acceleration of the transiting protons was studied by varying the length of the helical coil. Experimental data shows that the protons co-moving with the field region exhibit stronger focussing while increasing the coil length, with an increase of kinetic energy due to simultaneous post-acceleration. The net energy gain for a coil of constant pitch however saturates eventually when the post-accelerated protons overtakes the accelerating field region in due course. 3D particle tracing simulation underpins the dynamics of beam transport inside the coil, which highlights the requirement for a variable pitch coil geometry in order to sustain the post-acceleration over an extended coil.
|Number of pages||12|
|Journal||Plasma Physics and Controlled Fusion|
|Publication status||Published - 12 Oct 2020|
- Helical coil
ASJC Scopus subject areas
- Nuclear Energy and Engineering
- Condensed Matter Physics
FingerprintDive into the research topics of 'Dynamics of guided post-acceleration of protons in a laser-driven travelling-field accelerator'. Together they form a unique fingerprint.
R1696CPP: Nanorad - Ultrafast, Nano-Scale Material Response to Radiation and Applications of Ultrafast Radiation Sources
Dromey, B., Borghesi, M., Currell, F., Kar, S., Kohanoff, J., Reville, B., Riley, D., Sarri, G. & Yeung, M.
08/02/2017 → …
R1304CPP: Advanced laser-ion acceleration strategies towards next generation healthcare
Borghesi, M., Kar, S., Prise, K. & Zepf, M.
01/08/2012 → 20/01/2020
R1323CPP: Novel Techniques for control & Optimisation of Laser driven ion beams
01/08/2012 → 30/06/2015
Dataset for "Dynamics of guided post-acceleration of protons in a laser-driven travelling-field accelerator"
Kar, S. (Creator), hadjisolomou, P. (Contributor), Ahmed, H. (Contributor), Prasad, R. (Contributor), Cerchez, M. (Contributor), Brauckmann, S. (Creator), Aurand, B. (Contributor), Schroer, A. M. (Contributor), Swantusch, M. (Contributor), Willi, O. (Contributor) & Borghesi, M. (Contributor), Queen's University Belfast, 2020