Recent experiments aiming to measure phenomena predicted by strong-field quantum electrodynamics(SFQED)have done so by colliding relativistic electron beams and high-power lasers.In such experiments,measurements of co...Recent experiments aiming to measure phenomena predicted by strong-field quantum electrodynamics(SFQED)have done so by colliding relativistic electron beams and high-power lasers.In such experiments,measurements of collision parameters are not always feasible.However,precise knowledge of these parameters is required to accurately test SFQED.Here,we present a novel Bayesian inference procedure that infers collision parameters that could not be measured on-shot.This procedure is applicable to all-optical non-linear Compton scattering experiments investigating radiation reaction.The framework allows multiple diagnostics to be combined self-consistently and facilitates the inclusion of known information pertaining to the collision parameters.Using this Bayesian analysis,the relative validity of the classical,quantum-continuous and quantum-stochastic models of radiation reaction was compared for several test cases,which demonstrates the accuracy and model selection capability of the framework and highlight its robustness if the experimental values of fixed parameters differ from their values in the models.展开更多
The first demonstration of laser action in ruby was made in 1960 by T.H.Maiman of Hughes Research Laboratories,USA.Many laboratories worldwide began the search for lasers using different materials,operating at differe...The first demonstration of laser action in ruby was made in 1960 by T.H.Maiman of Hughes Research Laboratories,USA.Many laboratories worldwide began the search for lasers using different materials,operating at different wavelengths.In the UK,academia,industry and the central laboratories took up the challenge from the earliest days to develop these systems for a broad range of applications.This historical review looks at the contribution the UK has made to the advancement of the technology,the development of systems and components and their exploitation over the last 60 years.展开更多
文摘Recent experiments aiming to measure phenomena predicted by strong-field quantum electrodynamics(SFQED)have done so by colliding relativistic electron beams and high-power lasers.In such experiments,measurements of collision parameters are not always feasible.However,precise knowledge of these parameters is required to accurately test SFQED.Here,we present a novel Bayesian inference procedure that infers collision parameters that could not be measured on-shot.This procedure is applicable to all-optical non-linear Compton scattering experiments investigating radiation reaction.The framework allows multiple diagnostics to be combined self-consistently and facilitates the inclusion of known information pertaining to the collision parameters.Using this Bayesian analysis,the relative validity of the classical,quantum-continuous and quantum-stochastic models of radiation reaction was compared for several test cases,which demonstrates the accuracy and model selection capability of the framework and highlight its robustness if the experimental values of fixed parameters differ from their values in the models.
文摘The first demonstration of laser action in ruby was made in 1960 by T.H.Maiman of Hughes Research Laboratories,USA.Many laboratories worldwide began the search for lasers using different materials,operating at different wavelengths.In the UK,academia,industry and the central laboratories took up the challenge from the earliest days to develop these systems for a broad range of applications.This historical review looks at the contribution the UK has made to the advancement of the technology,the development of systems and components and their exploitation over the last 60 years.
