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 the injector section, various mechanical structures must be placed in a confined space, so simple 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 investigate the diagnostic response for a 3~GeV electron beam. Based on calculation results, we evaluate the measurable dynamic 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 |