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Description
The construction of a heavy ion accelerator facility is underway to support a variety of scientific studies, including nuclear physics, materials science, and medical applications. The accelerator is divided into two main sections: SCL3 for low-energy acceleration and SCL2 for high-energy acceleration. Currently, beam extraction and application experiments are being conducted in the low-energy acceleration section, while the construction of the high-energy acceleration section is ongoing. SCL3 consists of 22 quarter-wave resonators (QWR) operating at a superconducting cavity frequency of 81.25 MHz and 102 half-wave resonators (HWR) operating at 162.5 MHz. In contrast, SCL2 is equipped with 213 single-spoke resonators (SSR), which operate at a frequency of 325 MHz. The SCL3 superconducting cavities are powered by a solid-state power amplifier (SSPA) based on LDMOS (Lateral Double Diffused Metal Oxide Semiconductor) technology, capable of supplying up to 4 kW of RF power to the acceleration cavities. The primary components of the SSPA include the main transistor, a bidirectional coupler for monitoring RF input power, an attenuator, a limiter to prevent over-input, an ultra-short MMIC, a driving amplifier, a 4-way input power divider, a 4-way output power combiner, a circulator, and a dummy load. This device applies a feedback system using LLRF.
| Abstract Category | Hardware |
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