Layout of the New Septum Magnets for Fast Extraction in J-PARC Main Ring Article Swipe

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Magnet Ring (chemistry) J-PARC Extraction (chemistry) Physics Engineering Mechanical engineering Structural engineering Chemistry Organic chemistry Beam (structure) Chromatography

S. Iwata , K. Ishii , Hiroshi Matsumoto , N. Matsumoto , Yoichi Sato , T. Shibata , T. Sugimoto ·

YOU? · · 2021 · Open Access · · DOI: https://doi.org/10.18429/jacow-ipac2021-wepab204 · OA: W3202289728

At J-PARC Main Ring (MR), we are pursuing to improve the beam power from 500 kW to 1.3 MW by reducing the repetition cycle from 2.48 to 1.16 seconds (1 Hz operation). Additionally, we are considering the beam particles increasing by selecting a more optimal tune. The fast extraction (FX) equipment to the neutrino facility (NU) is needed to upgrade for the 1 Hz operation. We plan to replace most FX septum magnets with new ones in 2021. We report a layout of the FX line in confirmation of new beam optics and mention the beam loss during the fast extraction.