Online target normal sheath acceleration proton beam stabilization at 1 Hz in ultra-intense laser–matter interaction  

作　　者：Jose Luis Henares Michael Ehret Jon Apiñnaniz Carlos Salgado-López José Antonio Pérez-Hernández María Luisa Berlanga Ana María Cives Fernández Evgeny Filippov Enrique García-García Rubén Hernández Martín Diego De Luis Pilar Puyuelo-Valdes Isabel Rodríguez-Pérez María Dolores Rodríguez Frías Iuliana-Mariana Vladisavlevici Giancarlo Gatti 

机构地区：[1]CLPU(Centro de Láseres Pulsados),Villamayor,Salamanca,Spain [2]Dpto.Fisica y Matemáticas.Universidad de Alcalá,Madrid,Spain

出　　处：《High Power Laser Science and Engineering》2024年第6期229-237,共9页高功率激光科学与工程(英文版)

基　　金：funding from the European Union’s Horizon 2020 research and innovation programme through the European IMPULSE project under grant agreement No.871161;from LASERLAB-EUROPE V under grant agreement No.871124;funding from the Ministerio de Ciencia,Innovación y Universidades in Spain,through ICTS Equipment grant No.EQC2018-005230-P,further from grant PID2021-125389OA-I00 funded by MCIN/AEI/10.13039/501100011033/FEDER,UE;‘ERDF A way of making Europe’,by the European Union and in addition from grants from the Junta de Castilla y León,No.CLP263P20 and No.CLP087U16

摘　　要：We introduce a versatile high-repetition-rate solid tape target system suitable for relativistic laser-plasma driven secondary sources. We demonstrate the operation and stability monitoring based on a petawatt laser focused at 1 Hz.Experiments were carried out at the VEGA-3 laser system of the Centro de Láseres Pulsados facility where results for different tape materials and thicknesses are presented. Experimental proton spectra were recorded by a Thomson parabola spectrometer and a time-of-flight detector. In addition, non-invasive detectors, such as a target charging monitor and ionization chamber detectors, were tested as metrology for the stability of the source. Degradation of the proton signal at high-repetition-rate operation was observed and it was solved by online optimization of the relative focus position of the target and laser beam parameters. We report the use of the tape target for bursts of 1000 shots at1 Hz with mean cut-off energies of about 10 MeV in optimized interaction conditions.

关 键 词：high-repetition-rate operation laser-plasma acceleration petawatt laser facility solid target 

分 类 号：TN24[电子电信—物理电子学]