Speaker
Description
The first 100 MeV stage of the MYRRHA superconducting RF linear accelerator is under construction in Mol, Belgium. The machine produce an instantaneous proton beam current of 4 mA and represents the first step toward the construction of the MYRRHA Accelerator-Driven System (ADS). Such a machine presents several technical challenges for the control of its RF cavities. First, the required field stability is ≤ 0.1% in amplitude and ≤ 0.1° in phase to avoid excessive beam losses. The high loaded quality factor (QL = 2.3×10⁶) and the need to modulate the beam at 250 Hz require sophisticated field- and detuning-control techniques to keep RF consumption and stability within specifications. Finally, since the maximum allowed beam-trip duration is less than 3 seconds, real-time fault detection and recovery techniques must be implemented in the Low-Level RF (LLRF) controller. To meet these stringent requirements, the MTCA.4 standard and the DAMC-DS5014DR direct-sampling AMC were chosen. In this proceeding, the LLRF control strategy foreseen for the MYRRHA phase 1 will be presented. The current status of the firmware, software, and analog front-end will also be discussed.
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