High Precision Temperature Control and Analysis of RF Deionized Cooling Water System

Previously, the Taiwan Light Source (TLS) has proven the good beam quality mainly depends on the utility system stability. A series of efforts were devoted to these studies. Further, a high precision temperature control of the RF de-ionized cooling water system has been achieved to meet the more critical stability requirement. The paper investigates the mixing mechanism through thermal and flow analysis and verifies the practical influences. A flow mixing mechanism and control philosophy is studied and processed to minimize temperature variation which has been reduced from ± 0.1 °C to ± 0.01 °. Also, the improvement of correlation between RF performance and water cooling stability is presented.