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The amount of radioactive contaminants in the MS","authors_text":"Boxiang Yu, Hansheng Sun, Jian Fang, Jie Zhao, Junyu Shao, Lijun Sun, Li Zhou, Mengchao Liu, Tao Hu, Wanjin Liu, Wenjie Li, Xiao Cai, Xilei Sun, Xin Ling, Yayun Ding, Yuguang Xie","cross_cats":[],"headline":"The JUNO mixing plant reduces radioactive contaminants in the liquid scintillator master solution by two orders of magnitude using acid and water extraction and filtration.","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2026-05-15T01:46:40Z","title":"Mixing plant for JUNO liquid scintillator: Design, construction, installation and commissioning"},"references":{"count":12,"internal_anchors":1,"resolved_work":12,"sample":[{"cited_arxiv_id":"","doi":"10.1016/j.ppnp.2021.103927","is_internal_anchor":false,"ref_index":1,"title":"Progress in Particle and Nuclear Physics , keywords =","work_id":"ce1ee92a-2f69-4eb3-b7bf-87a0b2cb51ee","year":2022},{"cited_arxiv_id":"1508.07166","doi":"","is_internal_anchor":true,"ref_index":2,"title":"JUNO conceptual design report","work_id":"8db52764-5de7-4b3a-a3c7-477315fb54e8","year":2015},{"cited_arxiv_id":"","doi":"10.1088/1748-0221/18/02/p02013","is_internal_anchor":false,"ref_index":3,"title":"Journal of Instrumentation18(02), 02013 (2023) https://doi.org/10.1088/1748-0221/18/02/P02013","work_id":"c52df491-880b-4bac-b858-696214c21571","year":2023},{"cited_arxiv_id":"","doi":"10.1007/jhep11(2021)102","is_internal_anchor":false,"ref_index":4,"title":"JHEP 11, 102 (2021) https://doi.org/10.1007/JHEP11(2021)102 arXiv:2107.03669 [physics.ins-det]","work_id":"68fc8cb5-3c21-49ce-8709-941c10859e2b","year":2021},{"cited_arxiv_id":"","doi":"10.1016/j.nima.2022.167890","is_internal_anchor":false,"ref_index":5,"title":"Zhu, Z., Sun, L., Hu, T., Fang, J., Ye, J., Zhou, L., Liu, M., Liu, W., Cai, X., Sun, X., Ding, Y., Xie, Y., Yu, B.: Optical purification pilot plant for juno liquid scintillator. Nuclear Instruments ","work_id":"f42847cb-df3c-4f06-9cae-e5e0672e2893","year":2023}],"snapshot_sha256":"1ec346d7de79db9fa00f564db7ac93bb17972f7c02f827ca974e1f89bc41f210"},"source":{"id":"2605.15525","kind":"arxiv","version":1},"verdict":{"created_at":"2026-05-19T14:52:47.461866Z","id":"381f1eab-07a2-4271-94b6-0beec52a21ca","model_set":{"reader":"grok-4.3"},"one_line_summary":"The JUNO LS Mixing Plant purifies master solution to lower radioactive contaminants by approximately two orders of magnitude via extraction and filtration, then mixes it with LAB to deliver ultra-pure liquid scintillator meeting radiopurity requirements.","pipeline_version":"pith-pipeline@v0.9.0","pith_extraction_headline":"The JUNO mixing plant reduces radioactive contaminants in the liquid scintillator master solution by two orders of magnitude using acid and water extraction and filtration.","strongest_claim":"Commissioning results of the LS verify that the Mixing Plant achieved its design goal, delivering ultra pure LS that satisfies the stringent radiopurity requirements for neutrino physics.","weakest_assumption":"The acid and water extraction followed by multi-stage filtration can be performed at the required scale without introducing new radioactive or optical contaminants that would compromise the final liquid scintillator performance."}},"verdict_id":"381f1eab-07a2-4271-94b6-0beec52a21ca"}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:87a538305d0b9067215cb24a83e747f1dc1116544d3adae928309b2acb166e1c","target":"record","created_at":"2026-05-20T00:01:03Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"c7e5415af40549c30aada2d6923442455c639710f5344ad647b54d55329b29af","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2026-05-15T01:46:40Z","title_canon_sha256":"4def3c3e0ce572303944aead01ff6568764762961630bc60e8df8043cfc2958f"},"schema_version":"1.0","source":{"id":"2605.15525","kind":"arxiv","version":1}},"canonical_sha256":"f20bd7970de3433cd73e0a221518db201685416c39839fd14f8414089c872e9a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f20bd7970de3433cd73e0a221518db201685416c39839fd14f8414089c872e9a","first_computed_at":"2026-05-20T00:01:03.369419Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-20T00:01:03.369419Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"LFGszMrcDch8wlVlGXxisCe1I0WQUSFc7YecJwyIZsH6DYlHqbChdbu3550LCvQtFj4qK5SIj+XIUk7tfx7KBw==","signature_status":"signed_v1","signed_at":"2026-05-20T00:01:03.370222Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.15525","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:25654b5cb622498ab8973cb74f93228c5216e9ecbc387939f01c99a1af667463","sha256:87a538305d0b9067215cb24a83e747f1dc1116544d3adae928309b2acb166e1c","sha256:65b9466c9fff6af72b8bd06fa51b5e74cea35af8ea9ad0b38a3d7c6772691852"],"state_sha256":"3e723e6c680fac3a91549c6160b3cd1040fd4ed2f2da99bafd3836a1041e9dd4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"M6TFQyEPyrE8eqXIv66/qbq3dFM46BuTtsZi4xVTAdco/yW11HBXennpAXvn5INOsG92mRwpQ+FQRpx8DRIcCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-22T15:33:26.552860Z","bundle_sha256":"d0672fe1ed68c2d750b57f2b1231c065ca483daeac34ca4990d2c57a83393acb"}}