Speaker
Description
The BIBA (Busan Ion Beam Accelerator) is a compact linear accelerator facility using the 28 GHz SC-ECRIS (Superconducting Electron Cyclotron Resonance Ion Source) at the KBSI (Korea Basic Science Institute). The SC-ECRIS is designed to operate at 28 GHz with up to 10 kW of microwave power. During the operation of the SC-ECRIS, a large amount of X-rays is produced due to the high-energy electrons confined within the plasma. The emitted X-rays are absorbed by the cold mass of the superconducting magnet, leading to additional heat load on the cryostat system of SC-ECRIS. Therefore, the development of radiation shielding is essential to prevent a degradation in cryostat performance. In this paper, the effects of various radiation shielding materials under different conditions were compared and analyzed through simulations to evaluate their performance. Furthermore, X-ray spectra were measured using a Cd-Zn-Te detector combined with a collimator to analyze the X-ray emission during the operation of a 28 GHz SC-ECRIS. As a result, the cryostat with radiation shielding was fabricated, and it was confirmed that the radiation shielding performance is sufficient to ensure stable operation of the cryostat system.
| Contribution track | ICABU WG1. Accelerator Systems |
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