A fuel cell system having a fuel cell which performs a power generation operation with fuel for power generation of a fuel container; a water supply control section which extracts water from the fuel container and supplies the water to the fuel cell before the fuel cell performs the power generation operation. The first magnetic pole layer includes a tapered portion and a first tip portion. According to this vacuum processing apparatus, high speed processing of a number of processing objects can be achieved. Other embodiments may be described and claimed. Moreover, a silica glass crucible not causing the vibration at the surface of the silicon melt held in the silica glass crucible is also provided, wherein the vibration cycle of a silica glass of a side wall of the crucible is controlled at more than \u2159 seconds.