Abstract:
An apparatus and a method for measuring gas absorption characteristic of a cryogenic pump absorption panel are provided to improve an exhaust method of a cryogenic pump by estimating exhaust capability of the cryogenic pump. An apparatus for measuring gas absorption characteristic of a cryogenic pump absorption panel includes an electronic gun(210), a sensor(240), and a calculating unit. The electronic gun is installed in a chamber and inputs an electronic beam to the absorption panel. The sensor is installed in the chamber and detects an ion flying time and the amount of ion output from the surface of the absorption panel. The calculating unit determines a sort of gas, absorbed in the absorption panel, and calculates the amount of the gas from the ion flying time and the amount of ion.