High power laser systems are an attractive driver for compact energetic ion sources. We demonstrate repetitive acceleration at 0.1 Hz of proton beams up to 40 MeV from a reeled tape target irradiated by ultra-high intensities up to 5 × 10²¹ Wcm${}^{-2}$ and laser energies ≈ 15 J using the J-KAREN-P laser system. We investigate the stability of the source and its behaviour with laser spot focal size. We compare the scaling of proton energy with laser energy to a recently developed analytical model, and also demonstrate that it is possible to reach energies up to 50 MeV on a single shot with a lower laser energy ≈ 10 J by using a thinner target, motivating development of high repetition targetry suitable for thinner targets.

高功率激光系统是紧凑型高能离子源的诱人驱动器。我们展示了从高至5×10 ²¹  Wcm的超高强度辐照的带状磁带目标在质子束高达40 MeV的0.1 Hz下的重复加速度${}^{-2}$使用J-KAREN-P激光系统的激光能量约为15J。我们研究光源的稳定性及其与激光光斑焦距的关系。我们将质子能量与激光能量的缩放比例与最近开发的分析模型进行了比较，并且还证明了通过使用较薄的目标，可以以较低的激光能量≈10 J在单发中达到高达50 MeV的能量开发适合较薄目标的高重复目标。