A Muon Linear accelerator (Muon Linac) for the muon g-2/EDM experiment is currently under construction at Japan Proton Accelerator Research Complex (J-PARC). The objective of this project is to accelerate thermal muons (25 meV at 300 K) to 212 MeV, marking the world’s first implementation of muon acceleration. Development of the control system for the Muon Linac began in 2024. Core functionalities of the Ultra-Slow Muon section have been tested during beam time in May 2025. The system adopts the standard EPICS framework and features a compact architecture consisting of (a) a QNAP NAS for disk storage, (b) two operator terminals, and (c) two commercial micro servers serving as the EPICS IOC and the archiver server, respectively. This paper reports on the status of the control system development for the Ultra-Slow Muon section, as part of the first phase of the Muon Linac project. Toward the full commissioning of the entire Muon Linac in 2028, the prospects for extending the present control system to the main Linac components are discussed.
Min et al. (Fri,) studied this question.
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