Speaker
Description
In the main ring (MR) at the Japan proton accelerator research complex (J-PARC), beam-based alignment (BBA) is essential for precise calibration of beam position monitors relative to quadrupole magnet centers. With the upgrade of the beam position monitor (BPM) system for better precision scheduled in this summer, frequent and accurate BBA will become increasingly important to optics and orbit correction for realizing less beam loss and stable operation. In this study, a fast BBA method is experimentally investigated and compared with conventional approaches. The fast method uses orbit modulation within a single measurement to efficiently extract offset information. Experimental results show that the fast approach achieves alignment accuracy comparable to the conventional method while significantly reducing the required measurement time. These results demonstrate the feasibility of regular beam-based alignment measurements and provide a path toward more precise optics correction in the MR.
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