To improve a heat transport performance in a period until a stable time after the use of a heat pipe for high temperature is started, shorten the period until the stable period is obtained, and reduce a thermal stress.

In the heat pipe for high temperature having a wick provided in an inner wall surface of a container, a temperature sensor for observing the temperature of a high temperature part of the heat pipe for high temperature inserted into a heater, and a controller for controlling the high temperature part to prescribed temperature, are provided. A vibrator for vibrating the container in a radial direction is attached to one side of the container.