Accelerator-driven systems(ADSs)may offer a promising technology for energy production and transmutation of nuclear waste.Here we introduce the concept of utilizing high-intensity laser acceleration technology in real...Accelerator-driven systems(ADSs)may offer a promising technology for energy production and transmutation of nuclear waste.Here we introduce the concept of utilizing high-intensity laser acceleration technology in realizing an ADS,with a focus on the use of thorium fuel in subcritical systems.We explore state-of-the-art laser-driven particle sources for neutron generation by nuclear fusion,spallation or photonuclear reactions and the prospect of reaching the flux of 10^(15)n/s required to drive a subcritical reactor.We review recent advances in high-power laser amplification and assess their technological readiness in view of integration in an ADS.Finally,we present a risk analysis of a laser-driven ADS in terms of laser and target development,radiation safety and operational stability.Our conclusion highlights the potential of laser-driven ADSs as a transformative approach to nuclear fission energy.With continued research and development,technological hurdles can be overcome to fully realize sustainable,green energy production that can meet global energy demands while addressing safety and environmental concerns.展开更多
A colliding microjet liquid sheet target system was developed and tested for pairs of round nozzles of 10,11 and 18μm in diameter.The sheet's position stability was found to be better than a few micrometers.Upon ...A colliding microjet liquid sheet target system was developed and tested for pairs of round nozzles of 10,11 and 18μm in diameter.The sheet's position stability was found to be better than a few micrometers.Upon interaction with 50 mJ laser pulses,the 18μm jet has a resonance amplitude of 16μm at a repetition rate of 33 Hz,while towards 100 Hz it converges to 10μm for all nozzles.A white-light interferometric system was developed to measure the liquid sheet thickness in the target chamber both in air and in vacuum,with a measurement range of 182 nm±1μm and an accuracy of±3%.The overall shape and 3D shape of the sheet follow the Hasson±Peck model in air.In vacuum versus air,the sheet gradually loses 10%of its thickness,so the thinnest sheet achieved was below 200 nm at a vacuum level of 10±4mbar,and remained stable for several hours of operation.展开更多
基金funding from the EU Horizon 2020 Eu PRAXIA Preparatory Phase,under Grant Agreement No.101079773,and EU Horizon IFAST,under Grant Agreement No.101004730co-funded by the European Union–Next Generation EU‘Integrated infrastructure initiative in Photonic and Quantum Sciences’–I-PHOQS(IR0000016,ID D2B8D520,CUP B53C22001750006)and‘Eu PRAXIA Advanced Photon Sources’–Eu APS(IR0000030,CUP I93C21000160006)the funding from the National Research,Development,and Innovation Office through the National Laboratory program(contract#NKFIH 877-2/2020,and 476-4/2021)。
文摘Accelerator-driven systems(ADSs)may offer a promising technology for energy production and transmutation of nuclear waste.Here we introduce the concept of utilizing high-intensity laser acceleration technology in realizing an ADS,with a focus on the use of thorium fuel in subcritical systems.We explore state-of-the-art laser-driven particle sources for neutron generation by nuclear fusion,spallation or photonuclear reactions and the prospect of reaching the flux of 10^(15)n/s required to drive a subcritical reactor.We review recent advances in high-power laser amplification and assess their technological readiness in view of integration in an ADS.Finally,we present a risk analysis of a laser-driven ADS in terms of laser and target development,radiation safety and operational stability.Our conclusion highlights the potential of laser-driven ADSs as a transformative approach to nuclear fission energy.With continued research and development,technological hurdles can be overcome to fully realize sustainable,green energy production that can meet global energy demands while addressing safety and environmental concerns.
基金The project has been supported by the National Research,Development,and Innovation Office through the National Laboratory program(contract Nos.NKFIH-877-2/2020,NKFIH-476-4/2021 and NKFIH-476-16/2021)The ELIALPS project(GINOP-2.3.6-15-2015-00001)is supported by the European Union and co-financed by the European Regional Development Fund。
文摘A colliding microjet liquid sheet target system was developed and tested for pairs of round nozzles of 10,11 and 18μm in diameter.The sheet's position stability was found to be better than a few micrometers.Upon interaction with 50 mJ laser pulses,the 18μm jet has a resonance amplitude of 16μm at a repetition rate of 33 Hz,while towards 100 Hz it converges to 10μm for all nozzles.A white-light interferometric system was developed to measure the liquid sheet thickness in the target chamber both in air and in vacuum,with a measurement range of 182 nm±1μm and an accuracy of±3%.The overall shape and 3D shape of the sheet follow the Hasson±Peck model in air.In vacuum versus air,the sheet gradually loses 10%of its thickness,so the thinnest sheet achieved was below 200 nm at a vacuum level of 10±4mbar,and remained stable for several hours of operation.
