A multi-shot target assembly and automatic alignment procedure for laser–plasma proton acceleration at high repetition rate are introduced.The assembly is based on a multi-target rotating wheel capable of hosting mor...A multi-shot target assembly and automatic alignment procedure for laser–plasma proton acceleration at high repetition rate are introduced.The assembly is based on a multi-target rotating wheel capable of hosting more than 5000 targets,mounted on a 3D motorized stage to allow rapid replenishment and alignment of the target material between laser irradiations.The automatic alignment procedure consists of a detailed mapping of the impact positions at the target surface prior to the irradiation that ensures stable operation of the target,which alongside the purpose-built design of the target wheel,enables operation at rates up to 10 Hz.Stable and continuous laser-driven proton acceleration at 10 Hz is demonstrated,with observed cut-off energy stability about 15%.展开更多
基金This work was supportedby the Spanish Ministerio de Ciencia,Innovacion y Universidades under grants RTI2018-101578-B-C21,RTI2018-101578-B-C22,FPI predoctorals BES-2017-08917 and PRE2019-090730Unidad de Excelencia Maria de Maetzu under project MdM-2016-0692-17-2+2 种基金the Xuntade Galicia grants GRC ED431C 2017/54 and ED431F2023/21 and a grant of the program Grupos de investigacion consolidados(CIAICO/2022/008)financed by Generalitat Valenciana.Action co-financed by the European Union through the Programa Operativo del Fondo Europeo de Desarrollo Regional(FEDER)of the Comunitat Valenciana 2014-2020(IDIFEDER/2021/002)This work was supported by‘la Caixa'Foundation(ID 100010434)(fellowship code LCF/BQ/PI20/11760027)grant RYC2021-032654-I funded by MICIU/AEI/10.13039/501100011033 and by‘European Union Next Generation EU'.
文摘A multi-shot target assembly and automatic alignment procedure for laser–plasma proton acceleration at high repetition rate are introduced.The assembly is based on a multi-target rotating wheel capable of hosting more than 5000 targets,mounted on a 3D motorized stage to allow rapid replenishment and alignment of the target material between laser irradiations.The automatic alignment procedure consists of a detailed mapping of the impact positions at the target surface prior to the irradiation that ensures stable operation of the target,which alongside the purpose-built design of the target wheel,enables operation at rates up to 10 Hz.Stable and continuous laser-driven proton acceleration at 10 Hz is demonstrated,with observed cut-off energy stability about 15%.
