Speaker
Description
The Institute for Rare Isotope Science (IRIS) has developed and is operating an 81.25 MHz Radio Frequency Quadrupole (RFQ) equipped with two power couplers. Due to small installation errors, the two couplers exhibit slightly different coupling factors (β). As a result, the reflected powers from two couplers become unbalanced depending on the operating temperature of the Resonance Control Cooling System (RCCS).
The RCCS was originally designed to regulate the coolant temperature within ±0.1 °C. However, because the current high-power RF system has limited capability to tolerate reflected power, simultaneous minimization of the reflected power from both couplers is required by optimizing the RCCS operating temperature.
To improve operational stability under the existing RF system conditions, the PID gains of the RCCS were optimized, and the temperature control resolution was refined from 0.1 °C to 0.01 °C. Through these improvements, the reflected RF power from both couplers could be effectively minimized, enabling stable RFQ operation under reduced reflection conditions.
Funding Agency
This Work was supported by the Institute for Basic Science (IBS-I001-D1)
| I have read and accept the Privacy Policy Statement | Yes |
|---|