{"id":513,"date":"2026-01-22T21:00:00","date_gmt":"2026-01-22T12:00:00","guid":{"rendered":"https:\/\/www-nh.scphys.kyoto-u.ac.jp\/KSgroup\/?post_type=news-research&#038;p=513"},"modified":"2026-01-23T19:06:28","modified_gmt":"2026-01-23T10:06:28","slug":"513","status":"publish","type":"news-research","link":"https:\/\/www-nh.scphys.kyoto-u.ac.jp\/KSgroup\/news-research\/513\/","title":{"rendered":"\u3010J-PARC PAC\u3011E94\u5b9f\u9a13\uff08CSB\u7814\u7a76\uff09\u306e\u6e96\u5099\u72b6\u6cc1\u3092\u5831\u544a\uff1a\u65b0\u691c\u51fa\u5668\u958b\u767a\u3068\u89e3\u6790\u624b\u6cd5\u306e\u9ad8\u5ea6\u5316 (Report on E94 Experiment Status at 41st J-PARC PAC)"},"content":{"rendered":"\n<p><\/p>\n\n\n\n<!-- Google Fonts -->\n<link href=\"https:\/\/fonts.googleapis.com\/css2?family=Montserrat:wght@700&family=Noto+Sans+JP:wght@400;700&family=Roboto:wght@400;500&display=swap\" rel=\"stylesheet\">\n<link rel=\"stylesheet\" href=\"https:\/\/cdnjs.cloudflare.com\/ajax\/libs\/font-awesome\/6.4.0\/css\/all.min.css\">\n\n<style>\n    \/* --- Base Styles (Reusing the fix style) --- *\/\n    #pac-news-wrapper {\n        font-family: 'Noto Sans JP', sans-serif !important;\n        color: #333 !important;\n        line-height: 1.8 !important;\n        box-sizing: border-box !important;\n        width: 100% !important;\n        max-width: 100% !important;\n        margin-left: auto !important;\n        margin-right: auto !important;\n        padding: 30px !important;\n        background-color: #fff !important;\n        border: 1px solid #e0e0e0 !important;\n        border-radius: 8px !important;\n        box-shadow: 0 4px 10px rgba(0,0,0,0.05) !important;\n    }\n    #pac-news-wrapper * { box-sizing: inherit !important; }\n\n    \/* Header *\/\n    .p-news-header {\n        border-bottom: 2px solid #b71c1c !important; \/* J-PARC Red *\/\n        padding-bottom: 15px !important;\n        margin-bottom: 25px !important;\n    }\n    .p-news-title-en {\n        font-family: 'Montserrat', sans-serif !important;\n        font-size: 1.1rem !important;\n        color: #b71c1c !important;\n        font-weight: bold !important;\n        display: block !important;\n        margin-bottom: 5px !important;\n    }\n    .p-news-title-jp {\n        font-size: 1.5rem !important;\n        font-weight: bold !important;\n        color: #333 !important;\n    }\n\n    \/* Content *\/\n    .p-news-content p {\n        margin-bottom: 1.5em !important;\n        text-align: justify !important;\n        font-size: 16px !important;\n    }\n\n    \/* Topics Grid *\/\n    .p-topics-grid {\n        display: grid !important;\n        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)) !important;\n        gap: 20px !important;\n        margin: 30px 0 !important;\n        background-color: #fff5f5 !important; \/* Redish bg for J-PARC *\/\n        padding: 20px !important;\n        border-radius: 8px !important;\n 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inline-block !important;\n        background-color: #eee !important;\n        color: #666 !important;\n        font-size: 12px !important;\n        padding: 4px 10px !important;\n        border-radius: 4px !important;\n        margin-bottom: 15px !important;\n        font-weight: bold !important;\n    }\n    .p-english-section ul {\n        margin: 15px 0 15px 20px !important;\n        padding-left: 0 !important;\n        list-style-type: disc !important;\n    }\n    .p-english-section li {\n        margin-bottom: 5px !important;\n        font-size: 15px !important;\n    }\n\n    @media (max-width: 600px) {\n        #pac-news-wrapper { padding: 15px !important; }\n        .p-news-title-jp { font-size: 1.3rem !important; }\n        .p-topics-grid { grid-template-columns: 1fr !important; }\n    }\n<\/style>\n\n<div id=\"pac-news-wrapper\">\n\n    <!-- Header -->\n    <div class=\"p-news-header\">\n        <span class=\"p-news-title-en\">Report on E94 Experiment Status at 41st J-PARC PAC<\/span>\n        <div class=\"p-news-title-jp\">\u3010J-PARC PAC\u3011E94\u5b9f\u9a13\uff08CSB\u7814\u7a76\uff09\u306e\u6e96\u5099\u72b6\u6cc1\u3092\u5831\u544a\uff1a\u65b0\u691c\u51fa\u5668\u958b\u767a\u3068\u89e3\u6790\u624b\u6cd5\u306e\u9ad8\u5ea6\u5316<\/div>\n    <\/div>\n\n    <!-- Japanese Content -->\n    <div class=\"p-news-content\">\n        <p>\n            2026\u5e741\u670821\u65e5\uff5e23\u65e5\u3001\u7b2c41\u56deJ-PARC\u8ab2\u984c\u5be9\u67fb\u59d4\u54e1\u4f1a (PAC) \u304cJ-PARC\u306b\u304a\u3044\u3066\u958b\u50ac\u3055\u308c\u307e\u3057\u305f\u3002\u672c\u59d4\u54e1\u4f1a\u306b\u304a\u3044\u3066\u3001\u4eac\u90fd\u5927\u5b66\u30b9\u30c8\u30ec\u30f3\u30b8\u30cd\u30b9\u6838\u7269\u7406\u7814\u7a76\u30b0\u30eb\u30fc\u30d7\u304c\u9032\u3081\u308b\u300c\u30e9\u30e0\u30c0\u30cf\u30a4\u30d1\u30fc\u6838\u306e\u9ad8\u7cbe\u5ea6\u5206\u5149\u306b\u3088\u308b\u300e\u8377\u96fb\u5bfe\u79f0\u6027\u306e\u7834\u308c (CSB)\u300f\u7a76\u660e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\uff08J-PARC E94\u5b9f\u9a13\uff09\u300d\u306e\u6e96\u5099\u72b6\u6cc1\u306b\u3064\u3044\u3066\u30011\u670821\u65e5\u306b\u5f8c\u795e\u304c\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u4ee3\u8868\u3068\u3057\u3066\u767a\u8868\u3092\u884c\u3044\u307e\u3057\u305f\u3002\n        <\/p>\n\n        <p>\n            J-PARC E94\u5b9f\u9a13\u306f\u3001K1.8\u30d3\u30fc\u30e0\u30e9\u30a4\u30f3\u306b\u8a2d\u7f6e\u3055\u308c\u305f\u9ad8\u5206\u89e3\u80fd\u78c1\u6c17\u5206\u5149\u5668\u300cS-2S\u300d\u306b\u3001\u65b0\u305f\u306b\u30a2\u30af\u30ea\u30eb\u30c1\u30a7\u30ec\u30f3\u30b3\u30d5\u691c\u51fa\u5668\u3092\u5c0e\u5165\u3059\u308b\u3053\u3068\u3067\u3001\u9ad8\u5f37\u5ea6\u30d3\u30fc\u30e0\u74b0\u5883\u4e0b\u3067\u306e\u5b9f\u9a13\u5b9f\u73fe\u3092\u76ee\u6307\u3059\u3082\u306e\u3067\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u751f\u6210\u7387\u304c\u6975\u3081\u3066\u4f4e\u3044\u30e9\u30e0\u30c0\u30cf\u30a4\u30d1\u30fc\u6838\u306e\u4fe1\u53f7\u3092\u52b9\u7387\u7684\u306b\u691c\u51fa\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u3068\u306a\u308a\u307e\u3059\u3002<br>\n            2025\u5e7411\u6708\u306b\u306f\u30a2\u30af\u30ea\u30eb\u30c1\u30a7\u30ec\u30f3\u30b3\u30d5\u691c\u51fa\u5668\u306e\u8a66\u4f5c\u6a5f\u3092\u7528\u3044\u305f\u8a66\u9a13\u3092\u5b9f\u65bd\u3057\u3001\u4fe1\u53f7\u691c\u77e5\u306b\u304a\u3044\u3066\u5341\u5206\u306a\u6027\u80fd\u3092\u6709\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u307e\u3057\u305f\u3002\u4eca\u56de\u306ePAC\u3067\u306f\u3001\u3053\u306e\u65b0\u691c\u51fa\u5668\u306e\u958b\u767a\u72b6\u6cc1\u306b\u52a0\u3048\u3001S-2S\u306e\u904b\u52d5\u91cf\u89e3\u6790\u6027\u80fd\u306e\u5411\u4e0a\u306b\u5411\u3051\u305f\u4ee5\u4e0b\u306e\u53d6\u308a\u7d44\u307f\u306b\u3064\u3044\u3066\u3082\u5831\u544a\u3092\u884c\u3044\u307e\u3057\u305f\u3002\n        <\/p>\n\n        <!-- Topics Grid -->\n        <div class=\"p-topics-grid\">\n            <div class=\"p-topic-card\">\n                <strong><i class=\"fa-solid fa-microscope\"><\/i> \u30a2\u30af\u30c6\u30a3\u30d6\u30b7\u30fc\u30d6\u30b9\u30ea\u30c3\u30c8<\/strong>\n                <span>\u7a74\u3042\u304d\u691c\u51fa\u5668\u3092\u7528\u3044\u305f\u98db\u8de1\u30d1\u30bf\u30fc\u30f3\u62bd\u51fa\u306b\u3088\u308b\u3001S-2S\u30d3\u30fc\u30e0\u5149\u5b66\u7279\u6027\u306e\u7406\u89e3\u3068\u89e3\u6790\u7cbe\u5ea6\u5411\u4e0a<\/span>\n            <\/div>\n            <div class=\"p-topic-card\">\n                <strong><i class=\"fa-solid fa-brain\"><\/i> \u78c1\u5834\u8a08\u7b97\u3068AI\u89e3\u6790<\/strong>\n                <span>3\u6b21\u5143\u6709\u9650\u8981\u7d20\u6cd5\u306b\u3088\u308b\u78c1\u77f3\u30e2\u30c7\u30eb\u6700\u9069\u5316\u3084\u3001AI\uff08\u6a5f\u68b0\u5b66\u7fd2\uff09\u3092\u6d3b\u7528\u3057\u305f\u904b\u52d5\u91cf\u89e3\u6790\u624b\u6cd5\u306e\u958b\u767a<\/span>\n            <\/div>\n            <div class=\"p-topic-card\" style=\"border-left-color: #2e7d32 !important;\">\n                <strong><i class=\"fa-solid fa-flag-checkered\"><\/i> \u4eca\u5f8c\u306e\u5c55\u671b<\/strong>\n                <span>Stage 2 \u63a1\u629e\u6e08\u307f\u30022026\u5e74\u590f\uff5e\u79cb\u306e\u5b9f\u9a13\u5b9f\u65bd\u306b\u5411\u3051\u3001\u5b9f\u6a5f\u958b\u767a\u3068\u89e3\u6790\u30bd\u30d5\u30c8\u6574\u5099\u3092\u52a0\u901f<\/span>\n            <\/div>\n        <\/div>\n\n        <p>\n            J-PARC E94\u5b9f\u9a13\u306f\u3001\u3059\u3067\u306b\u5b9f\u9a13\u5b9f\u65bd\u306b\u5fc5\u8981\u306a\u300cStage 2\u300d\u63a1\u629e\u3092\u5f97\u3066\u3044\u307e\u3059\u3002\u4eca\u5f8c\u306f\u30a2\u30af\u30ea\u30eb\u30c1\u30a7\u30ec\u30f3\u30b3\u30d5\u691c\u51fa\u5668\u306e\u5b9f\u6a5f\u958b\u767a\u3001\u65e2\u5b58\u691c\u51fa\u5668\u306e\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u3001\u89e3\u6790\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u306e\u6574\u5099\u3092\u3055\u3089\u306b\u9032\u3081\u30012026\u5e74\u306e\u590f\uff5e\u79cb\u306b\u306f\u88c5\u7f6e\u306e\u5b8c\u6210\u3092\u76ee\u6307\u3057\u3066\u6e96\u5099\u3092\u52a0\u901f\u3055\u305b\u3066\u3044\u304d\u307e\u3059\u3002\n        <\/p>\n    <\/div>\n\n    <!-- English Content -->\n    <div class=\"p-english-section\">\n        <span class=\"p-en-label\">English Translation<\/span>\n        <p>\n            From January 21st to 23rd, 2026, the 41st J-PARC Program Advisory Committee (PAC) meeting was held at J-PARC. On January 21st, Dr. Gogami presented the preparation status of the \"J-PARC E94 Experiment,\" a project aimed at elucidating \"Charge Symmetry Breaking (CSB)\" through high-precision spectroscopy of Lambda hypernuclei.\n        <\/p>\n        <p>\n            The J-PARC E94 experiment aims to realize measurements under high-intensity beam conditions by introducing a new Acrylic Cherenkov Detector to the high-resolution magnetic spectrometer \"S-2S.\" This upgrade will enable efficient detection of Lambda hypernuclei signals.\n            We reported on the successful prototype test of the detector (Nov. 2025) and various initiatives to improve S-2S momentum analysis:\n        <\/p>\n        <ul>\n            <li><strong>Active Sieve Slit:<\/strong> Extracting track patterns through holes to understand S-2S optical properties.<\/li>\n            <li><strong>Advanced Analysis:<\/strong> Magnet model optimization using 3D field calculations and AI-based momentum analysis developed by graduate students.<\/li>\n        <\/ul>\n        <p>\n            With \"Stage 2\" status already granted, we are proceeding with detector development and software refinement, aiming for preparation completion in the summer or autumn of 2026.\n        <\/p>\n    <\/div>\n\n<\/div>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><a href=\"https:\/\/kds.kek.jp\/event\/58237\">https:\/\/kds.kek.jp\/event\/58237<\/a><\/p>\n<\/blockquote>\n","protected":false},"featured_media":427,"template":"","meta":{"_acf_changed":false},"news-research-category":[31,2,26],"news-research-tag":[],"class_list":["post-513","news-research","type-news-research","status-publish","has-post-thumbnail","hentry","news-research-category-31","news-research-category-news","news-research-category-presentations"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>\u3010J-PARC 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