Precision thermostabilization for LUE-200 accelerator section

A two-loop thermostating system for the accelerating section of the S-band electron linac has been developed. To provide the required heatsink path and an opportunity of re-changing the section while altering the acceleration mode, the temperature in the system of the thermostat and the cooling water channel in the external contour are regulated. To achieve the required precision (0.1%) and stabilization time of the temperature of the thermostat having extended waterways, the method of proportional-integral-derivative (PID) control has been applied. The programmed control allows one to adapt the system for several operating modes: the fast warming-up, operated settling of temperature and thermostabilization, change of the preset temperature of the thermostat. It provides the reduction of errors and setting time of the thermostating regime, and also minimization of power consumption of the thermostat