Speaker
Description
Cherenkov diffraction radiation (ChDR) has been widely studied for non-invasive transverse diagnostics of relativistic charged particle beams. In this work, we present a design study of a ChDR-based beam profile monitor for the beam transport line of the Pohang Light Source-II(PLS-II) injector at Pohang Accelerator Laboratory (PAL). In the beam transport line, especially at injector section, various mechanical structure must be placed in a confined space, so simple diagnostic instruments are required. Furthermore, conventional profile monitors such as YAG screens and wire scanners are interceptive, which limits their use for online profile measurements during tuning. A ChDR-based beam profile monitor is considered a compact, non-invasive option for transverse beam diagnostics. Since the ChDR intensity decreases exponentially with increasing impact parameter between the beam and the dielectric radiator, we investigated the diagnostic response for a 3 GeV electron beam. Based on calculation results, we evaluated the measurable dynamics range of the proposed ChDR beam profile monitor. These results support the feasibility of a ChDR diagnostic system for transverse beam profile measurements for the PLS-II injector beam transport line.
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| Supervisor's name | Moses Chung |
| Supervisor's email | moses@postech.ac.kr |
| Paper submission software | LATeX |