{"id":6028,"date":"2022-01-20T16:51:14","date_gmt":"2022-01-20T16:51:14","guid":{"rendered":"https:\/\/t2k-experiment.org\/beyond-t2k\/"},"modified":"2023-02-06T06:55:04","modified_gmt":"2023-02-06T06:55:04","slug":"beyond-t2k","status":"publish","type":"page","link":"https:\/\/t2k-experiment.org\/zh-hans\/beyond-t2k\/","title":{"rendered":"T2K\u5b9e\u9a8c\u53ca\u672a\u6765"},"content":{"rendered":"\n

T2K\u73b0\u5728\u5df2\u7ecf\u8fd0\u884c\u8d85\u591a\u5341\u5e74\uff0c\u6210\u529f\u5730\u5b8c\u6210\u4e86\u6700\u521d\u7684\u7269\u7406\u5b66\u7814\u7a76\u8ba1\u5212\u3002\u968f\u7740\u66f4\u591a\u6570\u636e\u7684\u91c7\u96c6\uff0c\u5728\u4e2d\u5fae\u5b50\u632f\u8361\u53c2\u6570\u548c\u76f8\u4e92\u4f5c\u7528\u622a\u9762\u7684\u6d4b\u91cf\u65b9\u9762\u4f1a\u6709\u8fdb\u4e00\u6b65\u7684\u6539\u8fdb\u3002\u968f\u7740\u66f4\u591a\u7edf\u8ba1\u6570\u636e\u7684\u6536\u96c6\uff0c\u6539\u8fdb\u63a2\u6d4b\u5668\u53d8\u5f97\u975e\u5e38\u91cd\u8981\uff0c\u4ee5\u4fbf\u51cf\u5c11\u7cfb\u7edf\u8bef\u5dee\uff08\u5373\u4e0d\u53ea\u662f\u7edf\u8ba1\u6ce2\u52a8\u5f15\u8d77\u7684\u7ed3\u679c\u4e0d\u786e\u5b9a\u6027\uff09\u3002\u65e5\u672c\u7684\u4e2d\u5fae\u5b50\u7269\u7406\u5b66\u8ba1\u5212\u5305\u62ec\u5bf9T2K\u5b9e\u9a8c\u8fdb\u884c\u91cd\u5927\u5347\u7ea7\u7684\u8ba1\u5212\uff0c\u5e76\u5728\u672a\u6765\u51e0\u5341\u5e74\u5185\u542f\u52a8T2K\u5b9e\u9a8c\u7684\u540e\u7ee7\u8005\u2014\u2014\u9876\u7ea7\u795e\u5188\uff08Hyper-Kamiokande\uff09\u5b9e\u9a8c\u3002<\/p>\n\n\n\n

T2K-II\/T2K-\u5347\u7ea7<\/strong><\/h2>\n\n\n\n

T2K\u5b9e\u9a8c\u7684\u7b2c\u4e8c\u9636\u6bb5\uff08T2K-II\uff09\u5305\u62ec\u4e2d\u5fae\u5b50\u675f\u7ebf\u548cND280\u8fd1\u63a2\u6d4b\u5668\u7684\u91cd\u5927\u5347\u7ea7\u8ba1\u5212\uff0c\u4ee5\u53ca\u8d85\u7ea7\u795e\u5188\uff08Super-Kamiokande\uff09\u6c34\u63ba\u9486\uff08Gd\uff09\u7684\u51b3\u5b9a\u5229\u7528\u3002T2K-II\u7684\u76ee\u6807\u662f\u5bf9CP\u5bf9\u79f0\u6027\u5728\u4e2d\u5fae\u5b50\u632f\u8361\u4e2d\u662f\u5426\u5b88\u6052\u8fbe\u52303\u03c3\u7f6e\u4fe1\u5ea6\u7684\u786e\u8ba4\u3002<\/p>\n\n\n\n

\u675f\u6d41\u5347\u7ea7<\/h3>\n\n\n
\n
\"\"
The improvement of beam power over time<\/em><\/figcaption><\/figure>\n<\/div>\n\n\n

\u76ee\u524d\u7684J-PARC\u4e3b\u73af\uff08MR\uff09\u6bcf\u96942.48s\u52a0\u901f\u8d28\u5b50\u523030GeV\uff0c\u4e3aT2K\u5b9e\u9a8c\u63d0\u4f9b\u4e86\u529f\u7387\u4e3a515kW\u7684\u8d28\u5b50\u675f\u3002\u675f\u7ebf\u5347\u7ea7\u76ee\u6807\u4e8e2022\u5e74\u8d28\u5b50\u675f\u7684\u529f\u7387\u8fbe\u5230750kW\uff0c\u5e76\u5728Hyper-K\u5b9e\u9a8c\u5f00\u59cb\u524d\u63d0\u9ad8\u52301.3MW\uff0c\u4ee5\u589e\u52a0\u7edf\u8ba1\u6570\u636e\u7684\u6536\u96c6\u3002\u589e\u52a0\u675f\u6d41\u529f\u7387\u9700\u8981\u8fbe\u5230\u66f4\u591a\u7684\u675f\u6d41\u6ea2\u51fa\u6b21\u6570\u548c\u6bcf\u6b21\u6ea2\u51fa\u6240\u56ca\u62ec\u7684\u8d28\u5b50\u6570\uff0c\u53ef\u4ee5\u901a\u8fc7\u63d0\u5347\u675f\u6d41\u91cd\u590d\u7387\u4ee5\u53ca\u51cf\u5c11\u675f\u6d41\u6d41\u5931\u548c\u4e0d\u7a33\u5b9a\u6027\u5b9e\u73b0\u3002\u7535\u6e90\u548c\u5c04\u9891\u8154\uff08RF\uff09\u7cfb\u7edf\u7684\u5347\u7ea7\u5c06\u6709\u52a9\u4e8e\u5c06\u5355\u6b21\u675f\u6d41\u6ea2\u51fa\u7684\u65f6\u95f4\u4ece2.48s\u51cf\u5c11\u81f31.16s\uff0c\u5e76\u63d0\u9ad8\u7a33\u5b9a\u6027\uff0c2026\u5e74\u95f4\u5de6\u53f3\u5355\u6b21\u6ea2\u51fa\u7684\u8d28\u5b50\u6570\u6709\u671b\u4ece2.65E14\u589e\u52a0\u81f33.2E14\u3002\u6b64\u5916\uff0c\u675f\u6d41\u5206\u6790\u76d1\u6d4b\u5668\u7684\u5347\u7ea7\u81f3\u5173\u91cd\u8981\uff0c\u9700\u8981\u9002\u5e94\u5e94\u5bf9\u675f\u6d41\u529f\u7387\u4ee5\u53ca\u8d28\u5b50\u4e0e\u77f3\u58a8\u9776\u76f8\u4e92\u4f5c\u7528\u91cf\u7684\u589e\u52a0\uff0c\u4ee5\u66f4\u7cbe\u786e\u5730\u6d4b\u91cf\u675f\u6d41\u7279\u6027\u548c\u51cf\u5c11\u4e2d\u5fae\u5b50\u901a\u91cf\u6d4b\u91cf\u4e2d\u7684\u7cfb\u7edf\u4e0d\u786e\u5b9a\u6027\u3002<\/p>\n\n\n\n

\u968f\u7740\u4e3b\u675f\u7ebf\uff08\u8d28\u5b50\u52a0\u901f\u5668\uff09\u7684\u5347\u7ea7\uff0c\u540c\u65f6\u4e5f\u9700\u8981\u5bf9\u675f\u7ebf\u4e2d\u63d0\u53d6\u4e2d\u5fae\u5b50\u90e8\u5206\u7684\u90e8\u4ef6\u8fdb\u884c\u6539\u8fdb\uff0c\u4ee5\u5e94\u5bf9\u52a0\u5f3a\u540e\u7684\u675f\u6d41\u529f\u7387\u3002\u8d28\u5b50\u675f\u649e\u51fb\u5230\u4e00\u4e2a91.4\u5398\u7c73\u957f\u7684\u6574\u4f53\u78b3\u9776 \uff08\u77f3\u58a8\u9776\uff09\u4e0a\uff0c\u7531\u6c26\u6c14\u51b7\u5374\uff0c\u51b7\u5374\u80fd\u529b\u63d0\u5347\u540e\uff0c\u76ee\u524d\u6b63\u4e3a\u66f4\u5f3a\u529f\u7387\u7684\u675f\u6d41\u7814\u53d1\u65b0\u578b\u9776\uff0c\u8003\u8651\u65b0\u578b\u9776\u7684\u7c7b\u578b\uff0c\u4ee5\u8fdb\u4e00\u6b65\u6700\u5927\u9650\u5ea6\u5730\u4ea7\u751f\u7684\u66f4\u591a\u6709\u6548\u4e2d\u5fae\u5b50\u3002\u78c1\u53f7\u7684\u5347\u7ea7\u5bf9\u4e8e\u6539\u5584\u5206\u522b\u805a\u7126\u8870\u53d8\u4ea7\u751f\u4e2d\u5fae\u5b50\u7684\u6b63\u8d1f\u03c0\u4ecb\u5b50\u975e\u5e38\u91cd\u8981\u3002\u76ee\u524d\u6b63\u5728\u66f4\u6362\u78c1\u53f71\u548c\u78c1\u53f72\uff0c\u5347\u7ea7\u7535\u6e90\u4f9b\u80fd\uff0c\u5e76\u57282\u4e2a\u78c1\u53f7\u7684\u57fa\u7840\u4e0a\u5728\u589e\u52a0\u4e00\u4e2a\u30023\u4e2a\u78c1\u53f7\u7684\u4f5c\u7528\u4e0b\uff0c\u78c1\u53f7\u4e2d\u7535\u6d41\u5c06\u4ece250kA\u589e\u52a0\u5230320kA\uff0c\u4ece\u800c\u4f7f\u540c\u53f7\u4e2d\u5fae\u5b50\uff08\u610f\u6307\u4e2d\u5fae\u5b50\u675f\u6a21\u5f0f\u7684\u4e2d\u5fae\u5b50\u6216\u53cd\u4e2d\u5fae\u5b50\u675f\u6a21\u5f0f\u7684\u53cd\u4e2d\u5fae\u5b50\uff09\u7684\u901a\u91cf\u589e\u52a010%\uff0c\u5f02\u53f7\u4e2d\u5fae\u5b50\u7684\u901a\u91cf\u51cf\u5c115~10%\u3002\u5728\u78c1\u53f7\u5185\u90e8\uff0c\u8f7d\u6d41\u6761\u7ebf\u5c06\u88ab\u5347\u7ea7\u4e3a\u4f7f\u7528\u6c34\u51b7\u800c\u4e0d\u662f\u6c26\u6c14\u51b7\u5374\uff0c\u800c\u6c26\u6c14\u5bb9\u5668\u3001\u8870\u53d8\u4f53\u79ef\u548c\u675f\u6d41\u6536\u96c6\u5668\uff08\u4ee5\u53ca\u9776\u7ad9\u7684\u5176\u4ed6\u5668\u4ef6\uff09\u5468\u56f4\u7684\u7ba1\u9053\u6c34\u51b7\u80fd\u529b\u4e5f\u5c06\u901a\u8fc7\u589e\u52a0\u6c34\u6d41\u91cf\u5f97\u5230\u5347\u7ea7\u3002\u6c34\u7bb1\u4e5f\u6b63\u5728\u5347\u7ea7\uff0c\u4ee5\u4fbf\u6709\u8db3\u591f\u7684\u7a7a\u95f4\u6765\u5904\u7406\u5728\u4e2d\u5fae\u5b50\u675f\u751f\u4ea7\u8fc7\u7a0b\u4e2d\u4ea7\u751f\u7684\u88ab\u5e9f\u5f03\u548c\u7a00\u91ca\u7684\u653e\u5c04\u6027\u6c34\u3002\u7535\u5b50\u500d\u589e\u7ba1\u4ee5\u53caMUMON\u7535\u6d41\u4e92\u611f\u5668\u7528\u4e8e\u611f\u5e94\u4e8c\u6b21\u8870\u53d8\u03bc\u5b50\uff08\u6765\u81ea\u03c0\u4ecb\u5b50\u8870\u53d8\uff09\u675f\u6d41\u5206\u6790\u548c\u03bc\u5b50\u7535\u8377\u6d4b\u91cf\uff0c\u6b63\u5728\u5f00\u53d1\u4e2d\u4ee5\u63d0\u9ad8\u6d4b\u91cf\u4e2d\u5fae\u5b50\u675f\u5206\u6790\u7684\u7075\u654f\u5ea6\u3002\u53e6\u4e00\u65b9\u9762\uff0c\u675f\u7ebf\u6a21\u62df\u4e5f\u53ef\u4ee5\u901a\u8fc7\u8003\u8651\u66f4\u591a\u7684\u5f3a\u5b50\u751f\u4ea7\u5b9e\u9a8c\u52a0\u5f3a\u9650\u5236\u6539\u8fdb\u3002<\/p>\n\n\n\n

ND280\u63a2\u6d4b\u5668\u5347\u7ea7<\/h3>\n\n\n\n

\u79bb\u8f74\u8fd1\u63a2\u6d4b\u5668ND280\u81ea2009\u5e74T2K\u5b9e\u9a8c\u6295\u5165\u4f7f\u7528\u4ee5\u6765\uff0c\u5728\u51cf\u5c11\u7cfb\u7edf\u4e0d\u786e\u5b9a\u6027\u65b9\u9762\u53d1\u6325\u4e86\u91cd\u8981\u4f5c\u7528\uff0c\u6700\u7ec8\u4e3a\u5728\u8db3\u591f\u7684\u7cbe\u786e\u5ea6\u4e4b\u4e0a\u53d1\u73b0\u03bd\u03bc \u2192 \u03bde\u632f\u8361\u505a\u51fa\u4e86\u8d21\u732e\u3002\u968f\u7740J-PARC\u675f\u6d41\u5411\u66f4\u9ad8\u7684\u529f\u7387\u5347\u7ea7\uff0c\u4e0b\u4e00\u4e2a\u76ee\u6807\u662f\u83b7\u5f97\u8db3\u591f\u7684\u7edf\u8ba1\u6570\u636e\uff0c\u4ee5\u8d85\u8fc73\u03c3\u7684\u7f6e\u4fe1\u5ea6\u786e\u5b9a\u8f7b\u5b50\u90e8\u5206\u7684CP\u7834\u574f\u60c5\u51b5\uff0c\u9700\u8981\u8fdb\u4e00\u6b65\u51cf\u5c11\u5269\u4f59\u7684\u7cfb\u7edf\u8bef\u5dee\u3002\u76ee\u524d\u7684\u79bb\u8f74\u8fd1\u63a2\u6d4b\u5668\u4ecd\u7136\u53d7\u5236\u4e8e\u4ec5\u5bf9\u5927\u90e8\u5206\u524d\u884c\u4e8b\u4ef6\u7684\u89d2\u5ea6\u63a5\u53d7\uff0c\u6b64\u5916\uff0c\u77ed\u8f68\u9053\u7684\u65f6\u95f4\u91cd\u5efa\u4e5f\u53d7\u5230\u9650\u5236\u3002\u56e0\u6b64\uff0c\u5e76\u975e\u6bcf\u4e00\u79cd\u7c7b\u578b\u7684\u4e2d\u5fae\u5b50\u76f8\u4e92\u4f5c\u7528\u90fd\u80fd\u5f97\u5230\u8db3\u591f\u7cbe\u786e\u7684\u5206\u6790\u3002<\/p>\n\n\n

\n
\"ND280
ND280 upgraded detector scheme (TOF sub-detectors not visible)<\/figcaption><\/figure>\n<\/div>\n\n\n

\u4e3a\u4e86\u6539\u5584\u8fd9\u4e9b\u7f3a\u70b9\uff0c\u76ee\u524dND280\u7684\u03c00\u63a2\u6d4b\u5668\uff08P0D\uff09\u88ab\u4e09\u79cd\u7c7b\u578b\u7684\u65b0\u5b50\u63a2\u6d4b\u5668\u6240\u53d6\u4ee3\u3002\u8d85\u7ea7\u7ec6\u7c92\u63a2\u6d4b\u5668\uff08SuperFGD\uff09\uff0c\u5939\u5728\u4e24\u4e2a\u9ad8\u89d2\u5ea6\u65f6\u95f4\u6295\u5f71\u5ba4\uff08HA-TPCs\uff09\u4e4b\u95f4\uff0c\u6709\u516d\u4e2a\u98de\u884c\u65f6\u95f4\u9762\uff08TOF\uff09\u56f4\u7ed5\u7740SuperFGD\u548cHA-TPCs\u3002SuperFGD\u662f\u7531\u6700\u5148\u8fdb\u7684\u5851\u6599\u95ea\u70c1\u7acb\u65b9\u4f53\u5236\u6210\uff0c\u5927\u5c0f\u4e3a1cm3\uff0c\u6709\u4e09\u4e2a\u5782\u76f4\u7684\u8bfb\u53d6\u5e73\u9762\u3002\u7531\u4e8e\u5176\u5404\u5411\u540c\u6027\u7684\u7279\u6027\uff0c\u7ec6\u5c0f\u7684\u7acb\u65b9\u4f53\u7ed3\u6784\u63d0\u4f9b\u4e86\u5168\u65b9\u4f4d\u7684\u89d2\u5ea6\u63a5\u53d7\u80fd\u529b\uff0c\u8fd9\u5927\u5927\u589e\u52a0\u4e86\u77ed\u8f68\u9053\u7684\u63a2\u6d4b\u6548\u7387\uff0c\u4e0e\u76ee\u524d\u57fa\u4e8e\u95ea\u70c1\u4f53\u68d2\u7684\u7ec6\u9897\u7c92\u63a2\u6d4b\u5668\uff08FGD\uff09\u76f8\u6bd4\uff0c\u4ec5\u4e00\u4e2a\u7acb\u65b9\u4f53\u7684\u4fe1\u53f7\u5c31\u80fd\u63d0\u4f9b\u4e09\u7ef4\u4fe1\u606f\u5e76\u63d0\u9ad8\u4f4d\u7f6e\u5206\u8fa8\u7387\u3002\u8d28\u5b50\u548c\u5e26\u7535\u79bb\u5b50\u7684\u6d4b\u91cf\u56e0\u6b64\u66f4\u52a0\u7cbe\u786e\uff0c\u5e76\u4e14\u80fd\u591f\u901a\u8fc7\u6d4b\u91cf\u968f\u540e\u76f8\u4e92\u4f5c\u7528\u4e2d\u4ea7\u751f\u7684\u4e8c\u6b21\u8870\u53d8\u7c92\u5b50\u6765\u63a2\u6d4b\u4e2d\u5b50\u3002HA-TPCs\u914d\u5907\u4e86\u5c16\u7aef\u7684\u8bfb\u53d6\u6280\u672f\uff0c\u5373\u7535\u963b\u5f0fMicroMegas\uff0c\u7531\u4e8eHA-TPCs\u4e2d\u6c14\u4f53\u7535\u79bb\u7684\u7c92\u5b50\u4ea7\u751f\u7684\u7535\u8377\u6269\u6563\uff0c\u4f7f\u5f97\u4f4d\u7f6e\u5206\u8fa8\u7387\u91cd\u5927\u6539\u8fdb\u3002\u6c34\u5e73\u914d\u7f6e\u53ef\u4ee5\u5bf9\u4e2d\u5fae\u5b50\u675f\u7684\u4e0a\u884c\u548c\u4e0b\u884c\u8f68\u9053\u8fdb\u884c\u8bc6\u522b\u548c\u52a8\u91cf\u91cd\u5efa\uff0c\u662f\u5bf9\u76ee\u524d\u5782\u76f4TPCs\u524d\u884c\u7c92\u5b50\u4fe1\u606f\u7684\u8865\u5145\u3002\u8d85\u8fc7TOF\u7684\u7c92\u5b50\u7684\u51c6\u786e\u65f6\u95f4\u4fe1\u606f\u53ef\u4ee5\u8bc6\u522b\u7c92\u5b50\u7684\u65b9\u5411\uff0c\u4ece\u800c\u5c06\u63a2\u6d4b\u5668\u5185\u4ea7\u751f\u7684\u7c92\u5b50\u4e0e\u63a2\u6d4b\u5668\u5916\u4ea7\u751f\u7684\u5e72\u6270\u4fe1\u53f7\u533a\u5206\u5f00\u6765\u3002\u65b0\u7684\u5b50\u63a2\u6d4b\u5668\u62e5\u6709\u5bf9\u4e2d\u5fae\u5b50\u76f8\u4e92\u4f5c\u7528\u622a\u9762\u8fdb\u884c\u66f4\u7cbe\u786e\u6d4b\u91cf\u7684\u57fa\u7840\uff0c\u5305\u62ec\u5229\u7528\u4f4e\u52a8\u91cf\u5f3a\u5b50\u7684\u6d4b\u91cf\u6765\u63a2\u6d4b\u6838\u6548\u5e94\u7684\u80fd\u529b\u3002<\/p>\n\n\n\n

\u7531\u4e8e\u63a5\u8fd1\u63a2\u6d4b\u5668\u7684\u5347\u7ea7\uff0c\u4f7f\u7528T2K\u7b2c\u4e8c\u9636\u6bb5\u6570\u636e\u7684\u7269\u7406\u5b66\u7814\u7a76\u6709\u671b\u4ece\u7cfb\u7edf\u4e0d\u786e\u5b9a\u6027\u964d\u4f4e\u52304%\uff08\u76ee\u524d\u4e3a6%\uff09\u4e2d\u83b7\u76ca\u3002ND280\u7684\u5347\u7ea7\u76ee\u524d\u6b63\u5728\u51c6\u5907\u4e2d\uff0c\u5c06\u4e8e2022\/23\u5e74\u5b8c\u6210\u3002<\/p>\n\n\n\n

SK-Gd<\/h2>\n\n\n\n

\u8d85\u7ea7\u795e\u5188\u5728\u5176\u8fd0\u884c\u7684\u5927\u90e8\u5206\u65f6\u95f4\u91cc\u4e00\u76f4\u5728\u586b\u5145\u8d85\u7eaf\u6c34\u3002\u7136\u800c\u8fd1\u5e74\u6765\uff0c\u7a00\u571f\u5143\u7d20\u9486\uff08Gd\uff09\u5df2\u88ab\u6dfb\u52a0\u4f9b\u5e94\uff0c\u6b64\u6d3b\u52a8\u671f\u88ab\u79f0\u4e3aSK-Gd\u3002\u9486\u5bf9\u4e2d\u5b50\u6355\u83b7\u6709\u975e\u5e38\u9ad8\u7684\u4eb2\u548c\u529b\u3002\u9486\u7684\u52a0\u5165\u610f\u5473\u7740\u5728\u53cd\u03b2\u8870\u53d8 (IBD, \u03bd<\/span>e<\/sub> + p \u2192 e+<\/sup> + n) \u4e8b\u4ef6\u4e2d\u4ea7\u751f\u7684\u4e00\u4e9b\u4e2d\u5b50\u5c06\u88ab\u9486\u6355\u83b7\uff0c\u53d7\u6fc0\u7684\u9486\u6838\u5728\u4e00\u9635\u9ad8\u80fd\u91cf\u7684X\u5c04\u7ebf\u4e2d\u89e3\u4f53\u3002\u8fd9\u4e9bX-ray\u5149\u5b50\u88ab\u5149\u7535\u500d\u589e\u5668\uff08PMTs\uff09\u68c0\u6d4b\u4e3a\u5ef6\u8fdf\u4fe1\u53f7\u3002\u6709\u4e86\u6b63\u7535\u5b50\u7684\u63d0\u793a\u4fe1\u53f7\u548c\u6355\u83b7\u7684\u4e2d\u5b50\u7684\u5ef6\u8fdf\u4fe1\u53f7\uff0cSK-GD\u53ef\u4ee5\u8fdb\u884c\u66f4\u7cbe\u786e\u7684\u4e8b\u4ef6\u91cd\u5efa\u3002\u5728\u63a2\u6d4b\u5668\u4e2d\u88ab\u6355\u83b7\u7684\u4e2d\u5b50\u7684\u6bd4\u4f8b\u4e0e\u9486\u6d53\u5ea6\u76f4\u63a5\u76f8\u5173\uff1b\u4ec5\u4ec5~0.1%\u7684\u9486\u5c31\u80fd\u63d0\u4f9b\u5927\u7ea690%\u7684\u4e2d\u5b50\u6355\u83b7\u7387\u3002<\/p>\n\n\n\n

\u66f4\u597d\u5730\u91cd\u5efaIBD\u4e8b\u4ef6\u5728\u4e0d\u540c\u7684\u4e2d\u5fae\u5b50\u7814\u7a76\u9886\u57df\u7ed9\u4e88\u6211\u4eec\u5e2e\u52a9\u3002\u5176\u4e2d\u6700\u6709\u5e0c\u671b\u7684\u662f\u5bfb\u627e\u6240\u8c13\u7684\u8d85\u65b0\u661f\u76f8\u5173\u4e2d\u5fae\u5b50\uff08SRN\uff09\u6216\u5f25\u6f2b\u6027\u8d85\u65b0\u661f\u4e2d\u5fae\u5b50\u80cc\u666f\uff08DSNB\uff09\u3002\u867d\u7136\u94f6\u6cb3\u7cfb\u7684\u8d85\u65b0\u661f\u662f\u7f55\u89c1\u7684\u73b0\u8c61\uff0c\u4f46\u9884\u8ba1\u5b83\u4eec\u5728\u6574\u4e2a\u5b87\u5b99\u4e2d\u5927\u7ea6\u6bcf\u79d2\u949f\u53d1\u751f\u4e00\u6b21\u3002\u6765\u81ea\u6240\u6709\u8fd9\u4e9b\u8d85\u65b0\u661f\u7684\u4e2d\u5fae\u5b50\u9884\u8ba1\u5c06\u5f62\u6210\u4e00\u4e2a\u603b\u901a\u91cf\uff0c\u53ef\u4ee5\u7528SK-GD\u6d4b\u91cf\u3002\u6d4b\u91cf\u9057\u8ff9\u4fe1\u53f7\u53ef\u4ee5\u544a\u8bc9\u6211\u4eec\u5173\u4e8e\u8d85\u65b0\u661f\u672c\u8eab\uff0c\u5b87\u5b99\u4e2d\u6052\u661f\u5f62\u6210\u7684\u901f\u5ea6\uff0c\u4ee5\u53ca\u5b87\u5b99\u7684\u5b87\u5b99\u5b66\u3002\u56e0\u6b64\uff0c\u9486\u7684\u52a0\u5165\u4e3a\u8d85\u7ea7\u795e\u5188\u7684\u4e2d\u5fae\u5b50\u7814\u7a76\u5e26\u6765\u4e86\u4e00\u6761\u65b0\u7684\u9014\u5f84\u3002<\/p>\n\n\n\n

\u9876\u7ea7\u795e\u5188\uff08Hyper-Kamiokande\uff09\u9879\u76ee<\/strong><\/h2>\n\n\n\n

\u4ece\u957f\u8fdc\u6765\u770b\uff0c\u542f\u52a8T2K\u5b9e\u9a8c\u7684\u540e\u7eed\u9879\u76ee–Hyper-Kamiokande\u5b9e\u9a8c\u6b63\u5728\u8ba1\u5212\u4e2d\u3002\u5b83\u5c06\u4fdd\u7559\u73b0\u6709\u7684\u4e2d\u5fae\u5b50\u675f\uff0c\u7ecf\u8fc7\u5347\u7ea7\u4ee5\u4ea7\u751f\u66f4\u5f3a\u7684\u4e2d\u5fae\u5b50\u901a\u91cf\u4ee5\u53ca\u8fd0\u7528\u5347\u7ea7\u540e\u7684\u8fd1\u7a0b\u63a2\u6d4b\u5668\u3002\u6c34\u5207\u4f26\u79d1\u592b\uff08Cherenkov\uff09\u63a2\u6d4b\u5668\u5c06\u4f1a\u66f4\u5927–Hyper-Kamiokande\u5c06\u4f1a\u53d6\u4ee3Super-Kamiokande\u3002\u540c\u65f6\u6709\u8ba1\u5212\u5728\u8ddd\u79bb\u4e2d\u5fae\u5b50\u6e901-2\u516c\u91cc\u5904\u5efa\u9020\u4e2d\u95f4\u6c34\u5207\u4f26\u79d1\u592b\u63a2\u6d4b\u5668\uff08IWCD\uff09\u3002\u548cSuper-Kamiokande\u4e00\u6837\uff0cHyper-Kamiokande\u5c06\u5305\u542b\u591a\u6837\u7684\u7269\u7406\u5b66\u9879\u76ee\uff0c\u6d89\u53ca\u6765\u81eaJ-PARC\u7684\u4e2d\u5fae\u5b50\u548c\u6765\u81ea\u5b87\u5b99\u5c04\u7ebf\u76f8\u4e92\u4f5c\u7528\u7684\u5927\u6c14\u4e2d\u5fae\u5b50\u3002Hyper-Kamiokande\u9884\u8ba1\u57282027\u5e74\u5de6\u53f3\u5f00\u59cb\u8fd0\u884c\u3002<\/p>\n\n\n\n

\u5173\u4e8eHyper-Kamiokande\u7684\u66f4\u591a\u4fe1\u606f\uff0c\u8bf7\u8bbf\u95eeHyper-Kamiokande\u7f51\u9875<\/a>\u3002<\/p>\n\n\n\n

Hyper-Kamiokande detector<\/h3>\n\n\n
\n
\"\"
Schematic of the Hyper-Kamiokande tank [\u00a9 Hyper-Kamiokande proto-collaboration, https:\/\/doi.org\/10.1093\/ptep\/pty044<\/a> ]<\/figcaption><\/figure>\n<\/div>\n\n\n

Hyper-Kamiokande\u662f\u7b2c\u4e09\u4ee3\u6c34\u5207\u4f26\u79d1\u592b\u63a2\u6d4b\u5668–\u6bd4\u5176\u524d\u8f88Super-Kamiokande\u5927\u4e94\u500d\u3002\u76ee\u524d\uff0cHyper-Kamiokande\u7684\u7f38\u4f53\u548c\u6d1e\u7a74\u8bbe\u8ba1\u6b63\u5728\u8fdb\u884c\u4e2d\uff0c\u8ba1\u5212\u57282027\u5e74\u8fdb\u884c\u6570\u636e\u91c7\u96c6\u3002\u50cfSuper-Kamiokande\u4e00\u6837\uff0c\u5b83\u5c06\u6709\u4e00\u4e2a\u5706\u67f1\u5f62\u7f38\u7684\u8bbe\u8ba1\uff0c\u4f46\u9ad8\u5ea6\u4e3a71\u7c73\u76f4\u5f84\u4e3a68\u7c73\uff0c\u7531\u4e8e\u5176\u4f53\u79ef\u7684\u5de8\u5927\u589e\u52a0\uff0c\u5b83\u5c06\u80fd\u591f\u5728\u77ed\u77ed\u768410\u5e74\u5185\u83b7\u5f97\u76f8\u5f53\u4e8eSuper-K\u6570\u636e\u6536\u96c6\u65f6\u95f4100\u5e74\u5de5\u4f5c\u7684\u6570\u636e\u91cf\uff0c\u5bfc\u81f4\u63a2\u6d4b\u5230\u65b0\u7269\u7406\u5b66\u7684\u673a\u4f1a\u5927\u5927\u589e\u52a0\u3002<\/p>\n\n\n\n

Hyper-Kamiokande\u7684\u7269\u7406\u5b66\u76ee\u6807\u591a\u79cd\u591a\u6837\uff0c\u4f46\u4e3b\u8981\u5305\u62ec\u66f4\u7cbe\u786e\u7684CP\u7834\u574f\u6d4b\u91cf\u3001\u66f4\u597d\u5730\u786e\u5b9a\u4e2d\u5fae\u5b50\u8d28\u91cf\u6392\u5e8f\u3001\u5b87\u5b99\u4e2d\u5fae\u5b50\u63a2\u6d4b\u548c\u89c2\u6d4b\u8d28\u5b50\u8870\u53d8\u3002CP\u7834\u574f\u7684\u6d4b\u91cf\u548c\u8d28\u5b50\u8870\u53d8\uff0c\u90fd\u662f\u786e\u5b9a\u5b87\u5b99\u4e2d\u5b58\u5728\u7684\u7269\u8d28-\u53cd\u7269\u8d28\u4e0d\u5bf9\u79f0\u6027\u80cc\u540e\u7684\u539f\u56e0\u7684\u5173\u952e\uff0c\u56e0\u4e3a\u5b83\u4eec\u5c5e\u4e8e\u8428\u54c8\u7f57\u592b\uff08Sakharov\uff09\u7684\u91cd\u5b50\u751f\u6210\u7684\u5fc5\u8981\u6761\u4ef6\u3002Hyper-Kamiokande\u5c06\u901a\u8fc7\u6d4b\u91cf\u4e2d\u5fae\u5b50\u548c\u53cd\u4e2d\u5fae\u5b50\u7684\u5473\u632f\u8361\u7684\u6982\u7387\u4e4b\u95f4\u7684\u5dee\u5f02\u6765\u7814\u7a76CP\u7834\u574f\u3002\u5bf9\u4e8e75%\u7684CP\u53c2\u6570\u7a7a\u95f4\uff0c\u5b83\u5c06\u80fd\u591f\u4ee53\u03c3\u7684\u7f6e\u4fe1\u5ea6\u786e\u8ba4CP\u7834\u574f\u7684\u5b58\u5728\uff0c\u5bf9\u4e8e50%\u4ee5\u4e0a\u7684\u53c2\u6570\u7a7a\u95f4\uff0c\u5219\u4ee55\u03c3\u7684\u7f6e\u4fe1\u5ea6\u786e\u8ba4\u3002\u4e2d\u5fae\u5b50\u8d28\u91cf\u6392\u5e8f\u7684\u7814\u7a76\u81f3\u5173\u91cd\u8981\uff0c\u56e0\u4e3a\u5b83\u5c06\u6709\u52a9\u4e8e\u5f04\u6e05\u8d1f\u8d23\u4e2d\u5fae\u5b50\u8d28\u91cf\u4ea7\u751f\u7684\u673a\u5236\u3002\u8d28\u91cf\u6392\u5e8f\u53ef\u4ee5\u6bd4\u8f83\u5927\u6c14\u7535\u4e2d\u5fae\u5b50\u51fa\u73b0\u7684\u4e2d\u5fae\u5b50\u4e0e\u53cd\u4e2d\u5fae\u5b50\u6765\u786e\u5b9a\u3002\u6709\u5173\u8d28\u91cf\u6392\u5e8f\u7684\u77e5\u8bc6\u4e5f\u5c06\u6709\u52a9\u4e8e\u68c0\u67e5\u4e2d\u5fae\u5b50\u662f\u5426\u662f\u5b83\u81ea\u5df1\u7684\u53cd\u7c92\u5b50\u3002<\/p>\n\n\n\n

Hyper-Kamiokande\u5c06\u901a\u8fc7\u4f7f\u7528\u4e00\u4e2a\u63a2\u6d4b\u5668\u6765\u5b8c\u6210\u8fd9\u4e9b\u6d4b\u91cf\uff0c\u8be5\u63a2\u6d4b\u5668\u4e0d\u4ec5\u5177\u6709\u6bd4Super-Kamiokande\u5927\u5f97\u591a\u7684\u57fa\u51c6\u4f53\u79ef\uff0c\u800c\u4e14\u8fd8\u5927\u5927\u6539\u8fdb\u4e86\u5149\u611f\u5668\uff0c\u5b83\u5c06\u8868\u73b0\u51fa\u4e24\u500d\u7684\u5149\u63a2\u6d4b\u6548\u7387\uff0c\u5e76\u80fd\u591f\u4ee5\u66f4\u9ad8\u7684\u7cbe\u5ea6\u6d4b\u91cf\u5149\u5f3a\u5ea6\u548c\u63a2\u6d4b\u65f6\u95f4\u3002\u5229\u7528\u591aPMT\u5149\u5b66\u6a21\u5757\uff0c\u5305\u62ec\u4f7f\u752819\u4e2a3\u82f1\u5bf8PMT\u5b89\u88c5\u5728\u4e0e\u666e\u901a20\u82f1\u5bf8PMT\u76f8\u540c\u7684\u6a21\u5757\u4e2d\uff0c\u53ef\u4ee5\u63d0\u4f9b\u66f4\u591a\u7684\u9897\u7c92\u5ea6\u4ee5\u589e\u5f3a\u4e8b\u4ef6\u91cd\u5efa\uff0c\u8fd9\u5bf9\u4e8e\u591a\u73af\u4e8b\u4ef6\u548c\u53d1\u751f\u5728\u63a2\u6d4b\u5668\u5185\u58c1\u9644\u8fd1\u7684\u4e8b\u4ef6\u5c24\u5176\u91cd\u8981\u3002\u6b64\u5916\uff0c\u8fd8\u5c06\u964d\u4f4e\u6697\u90e8\u547d\u4e2d\u7387\uff0c\u66f4\u597d\u5730\u9632\u6b62PMT\u5bb9\u5668\u5185\u7206\u3002<\/p>\n\n\n\n

\u4e2d\u95f4\u6c34\u5207\u4f26\u79d1\u592b\u63a2\u6d4b\u5668(IWCD)<\/h3>\n\n\n\n

\u4e2d\u95f4\u6c34\u5207\u4f26\u79d1\u592b\u63a2\u6d4b\u5668\uff0c\u7b80\u79f0IWCD\uff0c\u662f\u4f5c\u4e3aHyper-Kamiokande\u957f\u57fa\u7ebf\u4e2d\u5fae\u5b50\u7269\u7406\u8ba1\u5212\u7684\u4e00\u90e8\u5206\u63a8\u51fa\u7684\u4e00\u4e2a\u4e2d\u95f4\u8fd1\u63a2\u6d4b\u5668\u3002IWCD\u662f\u4e00\u4e2a\u5c0f\u89c4\u6a21\u7684\u6c34\u5207\u4f26\u79d1\u592b\u63a2\u6d4b\u5668\uff08\u9ad86\u7c73\uff0c\u76f4\u5f848\u7c73\uff09\uff0c\u91cd\u91cf\u7ea6\u4e3a300\u5428\uff0c\u5c06\u88ab\u653e\u7f6e\u5728\u8ddd\u79bbJ-PARC\u7684\u675f\u6d41\u4ea7\u751f\u70b9\u7ea61\u516c\u91cc\u5904\u3002<\/p>\n\n\n

\n
\"\"
Schematic of the IWCD detector<\/figcaption><\/figure>\n<\/div>\n\n\n

IWCD\u7684\u793a\u610f\u56fe\u53ef\u4ee5\u5728\u5de6\u8fb9\u7684\u56fe\u7247\u4e2d\u770b\u5230\u3002 IWCD\u5c06\u91c7\u7528 “\u591aPMT “\u6216mPMT\u6a21\u5757\uff0c\u4e0e\u6c34\u5207\u4f26\u79d1\u592b\u8bd5\u9a8c\uff08WCTE\uff09\u4e2d\u63d0\u5230\u7684\u6a21\u5757\u76f8\u540c\u3002mPMTs\u5c06\u901a\u8fc7\u5176\u5feb\u901f\u7684\u65f6\u95f4\u54cd\u5e94\u548c\u9897\u7c92\u5ea6\u5b9e\u73b0\u5bf9\u4e2d\u5fae\u5b50\u76f8\u4e92\u4f5c\u7528\u7684\u7cbe\u786e\u91cd\u5efa\u3002<\/p>\n\n\n\n

IWCD\u7684\u76ee\u6807\u662f\u5728\u76f8\u5bf9\u4e8e\u4e2d\u5fae\u5b50\u675f\u6d41\u7684\u591a\u4e2a\u79bb\u8f74\u89d2\u4f4d\u7f6e\u6d4b\u91cf\u4e2d\u5fae\u5b50\u901a\u91cf\uff0c\u4ee5\u4fbf\u5bf9\u4e2d\u5fae\u5b50\u76f8\u4e92\u4f5c\u7528\u6a21\u578b\u8fdb\u884c\u7814\u7a76\u3002\u4f17\u6240\u5468\u77e5\uff0c\u6c34\u5207\u4f26\u79d1\u592b\u63a2\u6d4b\u5668\u53ef\u4ee5\u8fdb\u884c\u975e\u5e38\u597d\u7684\u7535\u4e2d\u5fae\u5b50\u6d4b\u91cf\uff0c\u5782\u76f4\u9762\u79fb\u52a8\u5c06\u4f7fIWCD\u6210\u4e3a\u4e00\u4e2a\u529f\u80fd\u6027\u5f88\u5f3a\u7684\u8fd1\u63a2\u6d4b\u5668\u3002<\/p>\n\n\n

\n
\"\"
Neutrino energy spectrum with respect to off-axis angle<\/figcaption><\/figure>\n<\/div>\n\n\n

\u4e3a\u4ec0\u4e48\u662f\u4e00\u4e2a\u79fb\u52a8\u7684\u63a2\u6d4b\u5668\uff1f \u7531\u4e8e\u4e2d\u5fae\u5b50\u632f\u8361\uff0cHyper-Kamiokande\u548c\u8fd1\u63a2\u6d4b\u5668\u4e4b\u95f4\u7684\u80fd\u8c31\u4e0d\u540c\uff0c\u800c\u4e2d\u5fae\u5b50\u80fd\u8c31\u53d6\u51b3\u4e8e\u79bb\u8f74\u89d2\uff08\u89c1\u53f3\u56fe\uff09\u3002<\/p>\n\n\n\n

\u5728\u7ed9\u5b9a\u7684\u79bb\u8f74\u8303\u56f4\u5185\u7684\u4e0d\u540c\u70b9\u4e0a\u91c7\u96c6\u6570\u636e\uff0c\u53ef\u4ee5\u6a21\u4eff\u611f\u5174\u8da3\u7684\u80fd\u8c31\uff0c\u5305\u62ecHyper-Kamiokande\u63a2\u6d4b\u5668\u7684\u80fd\u8c31\u6216\u5355\u8272\u675f\u6d41\u3002\u8fd8\u53ef\u4ee5\u6d4b\u91cf\u771f\u5b9e\u80fd\u91cf\u548c\u91cd\u5efa\u80fd\u91cf\u5728\u80fd\u8c31\u4e0a\u7684\u5dee\u5f02\uff0c\u5e76\u786e\u5b9aCCQE\u548c\u975eCCQE\u4e8b\u4ef6\u7684 “\u9519\u8bef\u91cd\u5efa “\u7cfb\u6570\u3002<\/p>\n\n\n\n

\u7535\u4e2d\u5fae\u5b50\u622a\u9762\u7684\u6d4b\u91cf\u5c06\u662f\u81f3\u5173\u91cd\u8981\u7684\uff0cHyper-Kamiokande CP\u7834\u574f\u7684\u654f\u611f\u6027\u5c06\u53d7\u5230\u7535\u4e2d\u5fae\u5b50\u622a\u9762\u4e0d\u786e\u5b9a\u6027\u7684\u9650\u5236\u3002\u539f\u56e0\u662f\u76ee\u524d\u7684\u4e0d\u786e\u5b9a\u6027\u662f\u7531\u7406\u8bba\u9a71\u52a8\u7684\uff0c\u800c\u73b0\u6709\u7684\u6d4b\u91cf\u7ed3\u679c\u76ee\u524d\u53d7\u9650\u4e8e\u7edf\u8ba1\u4e0d\u786e\u5b9a\u6027\u3002IWCD\u7684\u6d4b\u91cf\u7ed3\u679c\u5c06\u6709\u52a9\u4e8e\u89e3\u51b3Hyper-Kamiokande\u957f\u57fa\u7ebf\u632f\u8361\u5206\u6790\u4e2d\u7684\u7cfb\u7edf\u4e0d\u786e\u5b9a\u6027\u9650\u5236\u3002<\/p>\n\n\n\n

\u6b27\u6d32\u6838\u5b50\u7814\u7a76\u4e2d\u5fc3\u7684\u6c34\u5207\u4f26\u79d1\u592b\u6d4b\u8bd5\u5b9e\u9a8c(WCTE)<\/h3>\n\n\n
\n
\"\"
WTCE scheme<\/figcaption><\/figure>\n<\/div>\n\n\n

\u6c34\u5207\u4f26\u79d1\u592b\u6d4b\u8bd5\u5b9e\u9a8c\uff08WCTE\uff09\u662f\u4e00\u4e2a\u5c0f\u89c4\u6a21\u7684\u6c34\u5207\u4f26\u79d1\u592b\u63a2\u6d4b\u5668\uff0c\u5c06\u4f4d\u4e8e\u6b27\u6d32\u6838\u5b50\u4e2d\u5fc3\uff08CERN\uff09\u3002WCTE\u5c06\u7528\u4e8e\u7814\u7a76\u6c34\u5207\u4f26\u79d1\u592b\u63a2\u6d4b\u5668\u5bf9\u5f3a\u5b50\u3001\u7535\u5b50\u548c\u03bc\u5b50\u675f\u6d41\u7684\u53cd\u5e94\uff0c\u5e76\u5c06\u4f7f\u7528\u65b0\u7684\u5149\u4f20\u611f\u5668\u6280\u672f\u3002\u63a2\u6d4b\u5668\u5c06\u91c7\u7528\u591aPMT\u6a21\u5757\uff0c\u6bcf\u4e2a\u6a21\u5757\u753119\u4e2a3\u82f1\u5bf8PMT\u7ec4\u6210\uff0c\u8fd8\u5c06\u6d4b\u8bd5\u4e00\u4e2a\u65b0\u5f00\u53d1\u7684\u6821\u51c6\u90e8\u7f72\u7cfb\u7edf\u3002\u5e26\u6709\u5df2\u77e5\u7c92\u5b50\u901a\u91cf\u7684\u6821\u51c6\u6280\u672f\u5c06\u88ab\u7528\u6765\u6f14\u793a1%\u7684GeV\u7ea7\u4e2d\u5fae\u5b50\u76f8\u4e92\u4f5c\u7528\u7684\u6821\u51c6\u3002\u5176\u4ed6\u6d4b\u91cf\u5c06\u5305\u62ec\u5207\u4f26\u79d1\u592b\u5149\u751f\u4ea7\u3001\u03c0\u4ecb\u5b50\u6563\u5c04\u548c\u4e8c\u6b21\u8870\u53d8\u4e2d\u5b50\u751f\u4ea7\uff0c\u4e3aT2K\u548cSuper-Kamiokande\uff08SK\uff09\u5b9e\u9a8c\u63d0\u4f9b\u76f4\u63a5\u4fe1\u606f\u8f93\u5165\u3002<\/p>\n\n\n\n

WCTE\u63a2\u6d4b\u5668\u7684\u8bbe\u8ba1\u7c7b\u4f3c\u4e8eSK\u7684\u8bbe\u8ba1\uff0c\u5728\u6c34\u7bb1\u5185\u5b89\u7f6e\u4e86\u4e00\u4e2a\u4e0d\u9508\u94a2PMT\u652f\u6491\u7ed3\u6784\u3002\u7136\u800c\uff0cWCTE\u7684\u89c4\u6a21\u8981\u5c0f\u5f97\u591a\uff0c\u5927\u7ea6\u4e3a4\u7c73-4\u7c73\uff0c\u5e76\u5c06\u4f7f\u7528\u591aPMT\u6a21\u5757\uff08mPMT\uff09\u800c\u4e0d\u662fSK\u4e2d\u4f7f\u7528\u7684\u5927\u578b20\u82f1\u5bf8PMT\u300219\u4e2a\u76f4\u5f84\u4e3a8\u5398\u7c73\u7684PMT\uff08Hamamatsu R14374\uff09\u7ec4\u6210\u4e86\u4e00\u4e2amPMT\uff0c\u4e0e\u4f7f\u7528\u8f83\u5927\u7684\u5355\u4e2aPMT\u76f8\u6bd4\uff0c\u5b83\u53ef\u4ee5\u6539\u5584\u9897\u7c92\u5ea6\u548c\u65f6\u95f4\u3002\u63a2\u6d4b\u5668\u7684\u6a2a\u622a\u9762\u663e\u793a\u5728\u5de6\u8fb9\u7684\u56fe\u4e2d\uff0c\u53ef\u4ee5\u770b\u5230\u4e0d\u9508\u94a2\u7f38\u3001\u652f\u6491\u7ed3\u6784\u548cmPMT\u6a21\u5757\u3002\u540c\u6837\u53ef\u89c1\u7684\u662f\u4e00\u4e2a3\u8f74\u6821\u51c6\u7cfb\u7edf\uff0c\u5b83\u5c06\u88ab\u7528\u6765\u5728\u63a2\u6d4b\u5668\u5185\u7684\u6307\u5b9a\u4f4d\u7f6e\u90e8\u7f72\u591a\u4e2a\u6821\u51c6\u88c5\u7f6e\u3002<\/p>\n\n\n\n

WCTE\u7684\u7269\u7406\u5b66\u7814\u7a76\u5305\u62ec<\/p>\n\n\n\n

    \n
  • \u5207\u4f26\u79d1\u592b\u5149\u7684\u4ea7\u751f\/\u8fc7\u7a0b\u5728\u5927\u578b\u63a2\u6d4b\u5668\u4e2d\u53ef\u80fd\u96be\u4ee5\u7814\u7a76\u3002<\/li>\n\n\n\n
  • \u80fd\u91cf\u6807\u5ea6\u6821\u51c6
    • \u5bf9\u4e8eHK\u6765\u8bf4\uff0c\u80fd\u91cf\u5c3a\u5ea6\u7684\u4e0d\u786e\u5b9a\u6027\u5e94\u8be5\u57280.5%\u7684\u8303\u56f4\u5185\uff0c\u800c\u76ee\u524dSK\u7684\u8bef\u5dee\u662f2%\u3002<\/li><\/ul>\n
        \n
      • \u5bf9\u80fd\u6807\u548c\u6821\u51c6\u6280\u672f\u7684\u7814\u7a76\u5c06\u81f4\u529b\u4e8e\u51cf\u5c11\u5927\u578b\u63a2\u6d4b\u5668\u7684\u80fd\u6807\u4e0d\u786e\u5b9a\u6027\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n
      • \u4e8c\u6b21\u8870\u53d8\u4e2d\u5b50\u4ea7\u751f\uff0c\u7528\u4e8eSK-GD\u548cHK\u7684\u4e2d\u5fae\u5b50\/\u53cd\u4e2d\u5fae\u5b50\u6807\u8bb0<\/li>\n\n\n\n
      • \u03c0\u4ecb\u5b50\u6563\u5c04\n
          \n
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\u4e3a\u4e86\u6539\u5584\u8fd9\u4e9b\u7f3a\u70b9\uff0c\u76ee\u524dND280\u7684\u03c00\u63a2\u6d4b\u5668\uff08P0D\uff09\u88ab\u4e09\u79cd\u7c7b\u578b\u7684\u65b0\u5b50\u63a2\u6d4b\u5668\u6240\u53d6\u4ee3\u3002\u8d85\u7ea7\u7ec6\u7c92\u63a2\u6d4b\u5668\uff08SuperFGD\uff09\uff0c\u5939\u5728\u4e24\u4e2a\u9ad8\u89d2\u5ea6\u65f6\u95f4\u6295\u5f71\u5ba4\uff08HA-TPCs\uff09\u4e4b\u95f4\uff0c\u6709\u516d\u4e2a\u98de\u884c\u65f6\u95f4\u9762\uff08TOF\uff09\u56f4\u7ed5\u7740SuperFGD\u548cHA-TPCs\u3002SuperFGD\u662f\u7531\u6700\u5148\u8fdb\u7684\u5851\u6599\u95ea\u70c1\u7acb\u65b9\u4f53\u5236\u6210\uff0c\u5927\u5c0f\u4e3a1cm3\uff0c\u6709\u4e09\u4e2a\u5782\u76f4\u7684\u8bfb\u53d6\u5e73\u9762\u3002\u7531\u4e8e\u5176\u5404\u5411\u540c\u6027\u7684\u7279\u6027\uff0c\u7ec6\u5c0f\u7684\u7acb\u65b9\u4f53\u7ed3\u6784\u63d0\u4f9b\u4e86\u5168\u65b9\u4f4d\u7684\u89d2\u5ea6\u63a5\u53d7\u80fd\u529b\uff0c\u8fd9\u5927\u5927\u589e\u52a0\u4e86\u77ed\u8f68\u9053\u7684\u63a2\u6d4b\u6548\u7387\uff0c\u4e0e\u76ee\u524d\u57fa\u4e8e\u95ea\u70c1\u4f53\u68d2\u7684\u7ec6\u9897\u7c92\u63a2\u6d4b\u5668\uff08FGD\uff09\u76f8\u6bd4\uff0c\u4ec5\u4e00\u4e2a\u7acb\u65b9\u4f53\u7684\u4fe1\u53f7\u5c31\u80fd\u63d0\u4f9b\u4e09\u7ef4\u4fe1\u606f\u5e76\u63d0\u9ad8\u4f4d\u7f6e\u5206\u8fa8\u7387\u3002\u8d28\u5b50\u548c\u5e26\u7535\u79bb\u5b50\u7684\u6d4b\u91cf\u56e0\u6b64\u66f4\u52a0\u7cbe\u786e\uff0c\u5e76\u4e14\u80fd\u591f\u901a\u8fc7\u6d4b\u91cf\u968f\u540e\u76f8\u4e92\u4f5c\u7528\u4e2d\u4ea7\u751f\u7684\u4e8c\u6b21\u8870\u53d8\u7c92\u5b50\u6765\u63a2\u6d4b\u4e2d\u5b50\u3002HA-TPCs\u914d\u5907\u4e86\u5c16\u7aef\u7684\u8bfb\u53d6\u6280\u672f\uff0c\u5373\u7535\u963b\u5f0fMicroMegas\uff0c\u7531\u4e8eHA-TPCs\u4e2d\u6c14\u4f53\u7535\u79bb\u7684\u7c92\u5b50\u4ea7\u751f\u7684\u7535\u8377\u6269\u6563\uff0c\u4f7f\u5f97\u4f4d\u7f6e\u5206\u8fa8\u7387\u91cd\u5927\u6539\u8fdb\u3002\u6c34\u5e73\u914d\u7f6e\u53ef\u4ee5\u5bf9\u4e2d\u5fae\u5b50\u675f\u7684\u4e0a\u884c\u548c\u4e0b\u884c\u8f68\u9053\u8fdb\u884c\u8bc6\u522b\u548c\u52a8\u91cf\u91cd\u5efa\uff0c\u662f\u5bf9\u76ee\u524d\u5782\u76f4TPCs\u524d\u884c\u7c92\u5b50\u4fe1\u606f\u7684\u8865\u5145\u3002\u8d85\u8fc7TOF\u7684\u7c92\u5b50\u7684\u51c6\u786e\u65f6\u95f4\u4fe1\u606f\u53ef\u4ee5\u8bc6\u522b\u7c92\u5b50\u7684\u65b9\u5411\uff0c\u4ece\u800c\u5c06\u63a2\u6d4b\u5668\u5185\u4ea7\u751f\u7684\u7c92\u5b50\u4e0e\u63a2\u6d4b\u5668\u5916\u4ea7\u751f\u7684\u5e72\u6270\u4fe1\u53f7\u533a\u5206\u5f00\u6765\u3002\u65b0\u7684\u5b50\u63a2\u6d4b\u5668\u62e5\u6709\u5bf9\u4e2d\u5fae\u5b50\u76f8\u4e92\u4f5c\u7528\u622a\u9762\u8fdb\u884c\u66f4\u7cbe\u786e\u6d4b\u91cf\u7684\u57fa\u7840\uff0c\u5305\u62ec\u5229\u7528\u4f4e\u52a8\u91cf\u5f3a\u5b50\u7684\u6d4b\u91cf\u6765\u63a2\u6d4b\u6838\u6548\u5e94\u7684\u80fd\u529b\u3002 \u7531\u4e8e\u63a5\u8fd1\u63a2\u6d4b\u5668\u7684\u5347\u7ea7\uff0c\u4f7f\u7528T2K\u7b2c\u4e8c\u9636\u6bb5\u6570\u636e\u7684\u7269\u7406\u5b66\u7814\u7a76\u6709\u671b\u4ece\u7cfb\u7edf\u4e0d\u786e\u5b9a\u6027\u964d\u4f4e\u52304%\uff08\u76ee\u524d\u4e3a6%\uff09\u4e2d\u83b7\u76ca\u3002ND280\u7684\u5347\u7ea7\u76ee\u524d\u6b63\u5728\u51c6\u5907\u4e2d\uff0c\u5c06\u4e8e2022\/23\u5e74\u5b8c\u6210\u3002 SK-Gd \u8d85\u7ea7\u795e\u5188\u5728\u5176\u8fd0\u884c\u7684\u5927\u90e8\u5206\u65f6\u95f4\u91cc\u4e00\u76f4\u5728\u586b\u5145\u8d85\u7eaf\u6c34\u3002\u7136\u800c\u8fd1\u5e74\u6765\uff0c\u7a00\u571f\u5143\u7d20\u9486\uff08Gd\uff09\u5df2\u88ab\u6dfb\u52a0\u4f9b\u5e94\uff0c\u6b64\u6d3b\u52a8\u671f\u88ab\u79f0\u4e3aSK-Gd\u3002\u9486\u5bf9\u4e2d\u5b50\u6355\u83b7\u6709\u975e\u5e38\u9ad8\u7684\u4eb2\u548c\u529b\u3002\u9486\u7684\u52a0\u5165\u610f\u5473\u7740\u5728\u53cd\u03b2\u8870\u53d8 (IBD, \u03bde + p \u2192 e+ + n) \u4e8b\u4ef6\u4e2d\u4ea7\u751f\u7684\u4e00\u4e9b\u4e2d\u5b50\u5c06\u88ab\u9486\u6355\u83b7\uff0c\u53d7\u6fc0\u7684\u9486\u6838\u5728\u4e00\u9635\u9ad8\u80fd\u91cf\u7684X\u5c04\u7ebf\u4e2d\u89e3\u4f53\u3002\u8fd9\u4e9bX-ray\u5149\u5b50\u88ab\u5149\u7535\u500d\u589e\u5668\uff08PMTs\uff09\u68c0\u6d4b\u4e3a\u5ef6\u8fdf\u4fe1\u53f7\u3002\u6709\u4e86\u6b63\u7535\u5b50\u7684\u63d0\u793a\u4fe1\u53f7\u548c\u6355\u83b7\u7684\u4e2d\u5b50\u7684\u5ef6\u8fdf\u4fe1\u53f7\uff0cSK-GD\u53ef\u4ee5\u8fdb\u884c\u66f4\u7cbe\u786e\u7684\u4e8b\u4ef6\u91cd\u5efa\u3002\u5728\u63a2\u6d4b\u5668\u4e2d\u88ab\u6355\u83b7\u7684\u4e2d\u5b50\u7684\u6bd4\u4f8b\u4e0e\u9486\u6d53\u5ea6\u76f4\u63a5\u76f8\u5173\uff1b\u4ec5\u4ec5~0.1%\u7684\u9486\u5c31\u80fd\u63d0\u4f9b\u5927\u7ea690%\u7684\u4e2d\u5b50\u6355\u83b7\u7387\u3002 \u66f4\u597d\u5730\u91cd\u5efaIBD\u4e8b\u4ef6\u5728\u4e0d\u540c\u7684\u4e2d\u5fae\u5b50\u7814\u7a76\u9886\u57df\u7ed9\u4e88\u6211\u4eec\u5e2e\u52a9\u3002\u5176\u4e2d\u6700\u6709\u5e0c\u671b\u7684\u662f\u5bfb\u627e\u6240\u8c13\u7684\u8d85\u65b0\u661f\u76f8\u5173\u4e2d\u5fae\u5b50\uff08SRN\uff09\u6216\u5f25\u6f2b\u6027\u8d85\u65b0\u661f\u4e2d\u5fae\u5b50\u80cc\u666f\uff08DSNB\uff09\u3002\u867d\u7136\u94f6\u6cb3\u7cfb\u7684\u8d85\u65b0\u661f\u662f\u7f55\u89c1\u7684\u73b0\u8c61\uff0c\u4f46\u9884\u8ba1\u5b83\u4eec\u5728\u6574\u4e2a\u5b87\u5b99\u4e2d\u5927\u7ea6\u6bcf\u79d2\u949f\u53d1\u751f\u4e00\u6b21\u3002\u6765\u81ea\u6240\u6709\u8fd9\u4e9b\u8d85\u65b0\u661f\u7684\u4e2d\u5fae\u5b50\u9884\u8ba1\u5c06\u5f62\u6210\u4e00\u4e2a\u603b\u901a\u91cf\uff0c\u53ef\u4ee5\u7528SK-GD\u6d4b\u91cf\u3002\u6d4b\u91cf\u9057\u8ff9\u4fe1\u53f7\u53ef\u4ee5\u544a\u8bc9\u6211\u4eec\u5173\u4e8e\u8d85\u65b0\u661f\u672c\u8eab\uff0c\u5b87\u5b99\u4e2d\u6052\u661f\u5f62\u6210\u7684\u901f\u5ea6\uff0c\u4ee5\u53ca\u5b87\u5b99\u7684\u5b87\u5b99\u5b66\u3002\u56e0\u6b64\uff0c\u9486\u7684\u52a0\u5165\u4e3a\u8d85\u7ea7\u795e\u5188\u7684\u4e2d\u5fae\u5b50\u7814\u7a76\u5e26\u6765\u4e86\u4e00\u6761\u65b0\u7684\u9014\u5f84\u3002 \u9876\u7ea7\u795e\u5188\uff08Hyper-Kamiokande\uff09\u9879\u76ee \u4ece\u957f\u8fdc\u6765\u770b\uff0c\u542f\u52a8T2K\u5b9e\u9a8c\u7684\u540e\u7eed\u9879\u76ee–Hyper-Kamiokande\u5b9e\u9a8c\u6b63\u5728\u8ba1\u5212\u4e2d\u3002\u5b83\u5c06\u4fdd\u7559\u73b0\u6709\u7684\u4e2d\u5fae\u5b50\u675f\uff0c\u7ecf\u8fc7\u5347\u7ea7\u4ee5\u4ea7\u751f\u66f4\u5f3a\u7684\u4e2d\u5fae\u5b50\u901a\u91cf\u4ee5\u53ca\u8fd0\u7528\u5347\u7ea7\u540e\u7684\u8fd1\u7a0b\u63a2\u6d4b\u5668\u3002\u6c34\u5207\u4f26\u79d1\u592b\uff08Cherenkov\uff09\u63a2\u6d4b\u5668\u5c06\u4f1a\u66f4\u5927–Hyper-Kamiokande\u5c06\u4f1a\u53d6\u4ee3Super-Kamiokande\u3002\u540c\u65f6\u6709\u8ba1\u5212\u5728\u8ddd\u79bb\u4e2d\u5fae\u5b50\u6e901-2\u516c\u91cc\u5904\u5efa\u9020\u4e2d\u95f4\u6c34\u5207\u4f26\u79d1\u592b\u63a2\u6d4b\u5668\uff08IWCD\uff09\u3002\u548cSuper-Kamiokande\u4e00\u6837\uff0cHyper-Kamiokande\u5c06\u5305\u542b\u591a\u6837\u7684\u7269\u7406\u5b66\u9879\u76ee\uff0c\u6d89\u53ca\u6765\u81eaJ-PARC\u7684\u4e2d\u5fae\u5b50\u548c\u6765\u81ea\u5b87\u5b99\u5c04\u7ebf\u76f8\u4e92\u4f5c\u7528\u7684\u5927\u6c14\u4e2d\u5fae\u5b50\u3002Hyper-Kamiokande\u9884\u8ba1\u57282027\u5e74\u5de6\u53f3\u5f00\u59cb\u8fd0\u884c\u3002 \u5173\u4e8eHyper-Kamiokande\u7684\u66f4\u591a\u4fe1\u606f\uff0c\u8bf7\u8bbf\u95eeHyper-Kamiokande\u7f51\u9875\u3002 Hyper-Kamiokande detector Hyper-Kamiokande\u662f\u7b2c\u4e09\u4ee3\u6c34\u5207\u4f26\u79d1\u592b\u63a2\u6d4b\u5668–\u6bd4\u5176\u524d\u8f88Super-Kamiokande\u5927\u4e94\u500d\u3002\u76ee\u524d\uff0cHyper-Kamiokande\u7684\u7f38\u4f53\u548c\u6d1e\u7a74\u8bbe\u8ba1\u6b63\u5728\u8fdb\u884c\u4e2d\uff0c\u8ba1\u5212\u57282027\u5e74\u8fdb\u884c\u6570\u636e\u91c7\u96c6\u3002\u50cfSuper-Kamiokande\u4e00\u6837\uff0c\u5b83\u5c06\u6709\u4e00\u4e2a\u5706\u67f1\u5f62\u7f38\u7684\u8bbe\u8ba1\uff0c\u4f46\u9ad8\u5ea6\u4e3a71\u7c73\u76f4\u5f84\u4e3a68\u7c73\uff0c\u7531\u4e8e\u5176\u4f53\u79ef\u7684\u5de8\u5927\u589e\u52a0\uff0c\u5b83\u5c06\u80fd\u591f\u5728\u77ed\u77ed\u768410\u5e74\u5185\u83b7\u5f97\u76f8\u5f53\u4e8eSuper-K\u6570\u636e\u6536\u96c6\u65f6\u95f4100\u5e74\u5de5\u4f5c\u7684\u6570\u636e\u91cf\uff0c\u5bfc\u81f4\u63a2\u6d4b\u5230\u65b0\u7269\u7406\u5b66\u7684\u673a\u4f1a\u5927\u5927\u589e\u52a0\u3002 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