GSI-FAIR Colloquium
Laser Acceleration of Protons and Ions - ultrashort, low emittance bunches for plasma probing, time resolved ion interactions and next generation accelerators
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Europe/Berlin
SB1 1.120 (GSI Main Lecture Hall)
SB1 1.120
GSI Main Lecture Hall
Beschreibung
Abstract
The extreme energy density associated with focused high power lasers results in extreme electric fields (>>TV/m) which can be harnessed for the acceleration of protons and ions to multi-MeV energies. An intriguing feature is the smal source size (micron scale) and short acceleration time (femtosecond scale). This results in extremely low emittance, ultrafast proton or ion source.
Control of the source parameters such as initial energy spectrum and pulse duration is achieved by controlling the acceleration mechanism - with sheath acceleration, relativistic transparency and radiation pressure modes forming distinct ways in which the target can accelerate the target hadrons to high energy [1-4].
First measurements of the proton pulse duration < 3.5ps will be shown and their application to first direct measurements of the picosecond response of materials. Ultimately, this method should allow the elucidation of the full track formation dynamics in solids. Such short proton pulses are also a key component of future advanced linear collider concepts [5] and laser based sources have the intrinsic low emittance required for such applications.
References
[1] Borghesi M and Macchi A Rev. Mod. Phys. 85, 751 (2013)
[2] J. Schreiber et al. Phys. Rev. Lett. 97, 045005 (2006)
[3] Robinson APR, M. Zepf et al. New Journal of Physics 10 (2008) 013021
[4] D. Jung, Rev. Sci. Instrum. 86, 033303 (2015); http://dx.doi.org/10.1063/1.4914845
[5] A. Caldwell, Nature Physics 5, 363 - 367 (2009)
The extreme energy density associated with focused high power lasers results in extreme electric fields (>>TV/m) which can be harnessed for the acceleration of protons and ions to multi-MeV energies. An intriguing feature is the smal source size (micron scale) and short acceleration time (femtosecond scale). This results in extremely low emittance, ultrafast proton or ion source.
Control of the source parameters such as initial energy spectrum and pulse duration is achieved by controlling the acceleration mechanism - with sheath acceleration, relativistic transparency and radiation pressure modes forming distinct ways in which the target can accelerate the target hadrons to high energy [1-4].
First measurements of the proton pulse duration < 3.5ps will be shown and their application to first direct measurements of the picosecond response of materials. Ultimately, this method should allow the elucidation of the full track formation dynamics in solids. Such short proton pulses are also a key component of future advanced linear collider concepts [5] and laser based sources have the intrinsic low emittance required for such applications.
References
[1] Borghesi M and Macchi A Rev. Mod. Phys. 85, 751 (2013)
[2] J. Schreiber et al. Phys. Rev. Lett. 97, 045005 (2006)
[3] Robinson APR, M. Zepf et al. New Journal of Physics 10 (2008) 013021
[4] D. Jung, Rev. Sci. Instrum. 86, 033303 (2015); http://dx.doi.org/10.1063/1.4914845
[5] A. Caldwell, Nature Physics 5, 363 - 367 (2009)