[PDF] Top 20 Spectral shaping of laser generated proton beams

... The laser pulse hits the thin foil target at the front side exactly opposite to a ...second laser, which hits the target on the back side concentrically with respect to the first, is used for the cleaning ... See full document

... of laser-accelerated particles if detectors with single par- ticle sensitivity are used, such as an absolutely calibrated multichannel-plate (MCP) coupled to a phosphor screen (see Sec- tion ...single laser ... See full document

... using laser-irradiated microtubes, by which both the energy and the quality of an injected proton beam can be en- ...intense laser pulses, a micro- tube will be ionized instantaneously and its ... See full document

... the laser focus and the separation of the laser foci in the case of two beams may be expected to influence the resulting proton beam ...given laser focus are assumed to be bal- ... See full document

... high laser intensity produces sheath fields that can accelerate protons [ 1, 2 ] ...these beams characteristically have a thermal ...these beams, especially reducing low energy parasitic ions, is a ... See full document

... on laser and target parameters). The manipulation of laser generated proton beams gives new challenges due to the high bunch charge and short pulse nature of the beams, requiring ... See full document

... camera-based laser profiler (Spiricon) to observe the reconstructed annular beam patterns when it was flipped into beam ...the laser focus. The spectral bandwidth, ∆𝜆 < ... See full document

... and longitudinal instabilities (such as the Weibel et al., 1959), two-stream (Hao et al., 2009), and resistive filamenta- tion instabilities (Gremillet et al., 2002)), and to self- generated magnetic fields (Bell ... See full document

... required laser intensity increases much slower than the increase of the target ...interactive laser and target shaping provides a possible guidance for future target ...only laser or electron ... See full document

... a proton-focusing region of the B-field is a novel feature for these experimental ...broad spectral peak in the target normal ...energy—the spectral modification also enhances the proton ... See full document

... current laser parameters, the target normal sheath acceleration (TNSA) has been the typical mechanism found in experiments for laser-driven ion acceleration 10,11 ...generate proton beams with ... See full document

... the shaping crystals, are shown to be 40 ps by using four shaping crystals ...five shaping crystals ...More shaping crystals [7] or longer input pulse duration [8] can be used to produce a ... See full document

... 8 The idea for Run 2 is to split the plasma into two sections: a self-modulator and an accelerator. The proton bunch modulates (until saturation is reached) into a micro-bunch train in the self- modulator. A short ... See full document

... simultaneously in separate audio channels to allow for the measurement of RT. RT measurements were calculated in Audacity® by measuring the time delay between the speech offset in the stimulus to the start of the ... See full document

... The data acquisition system designed and constructed for the experiments discussed in this thesis is shown schematically in fig. A3.1. The system consisted of an Apple 3 microcomputer and an external analog input u n i t ... See full document

... irradiance, the temperature as well as the number density were found to rise to a level of 1000mj irradiance of laser and to saturate later on. The temperature’s saturation along with the number density which was ... See full document

... of laser technology in underwater, the evolution properties of laser beams propagating in oceanic turbulence have been ...various laser beams in oceanic turbulence have been illustrated ... See full document

... Laser forming is thermo mechanical process in which a sheet metal is formed in to a desired shape without using external force. No direct contact with the work piece, so it is a non contact type process. The aim ... See full document

... pump laser before interaction with the seed, can be preferentially damped by the introduc- tion of collisional effects in the code without affecting the driven process, which occurs as a result of the beating of ... See full document

... outgoing beams in a state not representable by ...resultant beams for all three gratings and for the NG control are maintained at the same power level for the complete set of ...resultant beams. ... See full document