| 摘要 |
A device for tripping an excessive reflection power in an accelerator high frequency system is provided to prevent a system from being damaged due to a high reflection power without changing a trip level by maintaining the trip level at a constant value. A device for tripping an excessive reflection power in an accelerator high frequency system includes a high frequency power measuring unit(120), a trip level adjuster(131), a divider(133), and a comparator(132). The high frequency power measuring unit measures a forward power value, which is delivered from a high frequency system to the accelerator, and a reflection power value, which is reflected from the accelerator. The trip level adjuster sets a trip level for the high frequency system. The divider is connected to forward and backward power ports(121,122) of the high frequency power measuring unit and calculates a power ratio between the reflection power and the forward power. The comparator is connected to the divider and the trip level adjuster and compares an input power ratio with the trip level from the adjusted trip level, and outputs a trip signal, when the power ratio is higher than the trip level. |
