dorsal/arxiv
View SchemaAn Overview of the KamLAND 1-kiloton Liquid Scintillator
| Authors | F. Suekane, T. Iwamoto, H. Ogawa, O. Tajima, H. Watanabe |
|---|---|
| Categories | |
| ArXiv ID | physics/0404071 |
| URL | https://arxiv.org/abs/physics/0404071 |
Abstract
KamLAND is a massive liquid-scintillator-based neutrino detector studying low energy neutrino oscillation. The experiment has discovered a large deficit of the reactor neutrino flux with baseline of 180km in the year 2002. This result is placing a strong impact on the elementary particle physics. The KamLAND detector makes use of one kiloton of liquid scintillator (LS) as the active neutrino target. This is the largest homogeneous LS detector in the world. Although the light yield and attenuation length of the LS were measured to be 57% anthracene and ~10m, in the test experiments, when it is used in the KamLAND detector, the effective transparency and light yield significantly increased from these values, presumably due to the scattering and re-emission in the large scale LS. The radio active contamination in the LS is extremely low, such as 3.5E-18g/g for uranium. This is the world's lowest contamination record so far achieved and measured. The success of the KamLAND experiment is a fruit of this high-quality and large-quantity LS. In this proceedings, an outline of the LS is described.
{
"annotation_id": "732ced1c-4a2d-4413-80a0-7bdabc661a94",
"date_created": "2026-03-02T18:00:49.909000Z",
"date_modified": "2026-03-02T18:00:49.909000Z",
"file_hash": "fa979a244f213ba151c45544fc343a3645249b408b06041f5bb5b446284ce751",
"private": false,
"record": {
"abstract": "KamLAND is a massive liquid-scintillator-based neutrino detector studying low\nenergy neutrino oscillation. The experiment has discovered a large deficit of\nthe reactor neutrino flux with baseline of 180km in the year 2002. This result\nis placing a strong impact on the elementary particle physics. The KamLAND\ndetector makes use of one kiloton of liquid scintillator (LS) as the active\nneutrino target. This is the largest homogeneous LS detector in the world.\nAlthough the light yield and attenuation length of the LS were measured to be\n57% anthracene and ~10m, in the test experiments, when it is used in the\nKamLAND detector, the effective transparency and light yield significantly\nincreased from these values, presumably due to the scattering and re-emission\nin the large scale LS. The radio active contamination in the LS is extremely\nlow, such as 3.5E-18g/g for uranium. This is the world\u0027s lowest contamination\nrecord so far achieved and measured. The success of the KamLAND experiment is a\nfruit of this high-quality and large-quantity LS. In this proceedings, an\noutline of the LS is described.",
"arxiv_id": "physics/0404071",
"authors": [
"F. Suekane",
"T. Iwamoto",
"H. Ogawa",
"O. Tajima",
"H. Watanabe"
],
"categories": [
"physics.ins-det"
],
"title": "An Overview of the KamLAND 1-kiloton Liquid Scintillator",
"url": "https://arxiv.org/abs/physics/0404071"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "5413ecac-e132-4e3b-8794-96745ad385d6",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}