Modification of duct heater control to maintain stability of humidity in the cyclotron cave to support operation of cyclotron CS - 30 BATAN

Cyclotron CS-30 is a charged particle accelerator owned by BATAN. One of the requirements for the operation is moisture condition (humidity) in the Cyclotron Cave which should be below 55 %. Damage of the heating system (duct heater) makes the humidity rises above the limit value. To overcome these problems modifications have been made to the duct heater control with the aim of reviving the heating system and maintaining the reliability of the heating system so that stability of humidity can be achieved. The methodology used here is by to utilizing the incoming air flow of the VAC system as an indication to control the operation of the heating system. Therefore an air flow-based control unit has been built that can operate the heating system so that the stability of the humidity in the Cyclotron Cave can be achieved. (author)