Applications of PADC nuclear track detectors in laser-driven particle acceleration experiments

Fukuda, Yuji; Tampo, Motonobu; Sakaki, Hironao; Kondo, Kiminori; Kanasaki, Masato; Yamauchi, Tomoya*

In the laser-driven ion acceleration experiments, it is almost impossible to predict maximum ion energy in advance, because the maximum energy varies according to experimental condition. Recently, solid state nuclear track detectors such as CR-39 detectors have been extensively used in laser-driven ion acceleration experiments. This is because the CR-39 have a great advantage that they are insensitive to high energy photons and electrons and capable of detecting only ions. However, the CR-39 cannot detect fast ions with energies beyond its detection threshold limit. A stack of CR-39 or a method utilizing backscattered particles are developed to detect high energy ions. Moreover, vacuum effects on CR-39 make it difficult to identify ion energies and ion species. We introduce applications of CR-39 detectors in laser-driven particle acceleration experiments in JAEA-KPSI.