Provided are a flash memory system and a word line interleaving method thereof. The putter faces releasably connect to the putter head. The adapter circuit includes a switch for selecting between a first magnitude step down voltage lower than a magnitude of the source voltage and second magnitude lower than a magnitude of the source voltage and higher than the first magnitude. A detection device of the apparatus is arranged so as to be capable of detecting an operational parameter of a radiation beam emitted by the radiation source and having passed at least one optical element of the irradiation unit.