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首页> 外文期刊>Nuclear Technology >ADSORPTION BEHAVIOR OF RADIONUCLIDES ON ION-EXCHANGE RESIN FROM COOLING WATER FOR THE K2K TARGET AND MAGNETIC HORNS
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ADSORPTION BEHAVIOR OF RADIONUCLIDES ON ION-EXCHANGE RESIN FROM COOLING WATER FOR THE K2K TARGET AND MAGNETIC HORNS

机译：放射性核素在冷却水中对K2K目标和磁性角质的离子交换树脂的吸附行为

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摘要

The beam power in a new project of a long-baseline neutrino oscillation experiment from Tokai to Kamioka (the T2K experiment) will be approximately 100 times higher than that in a substantial long-baseline neutrino oscillation experiment from the High Energy Accelerator Research Organization (KEK) to Kamioka (the K2K experiment). In the T2K experiment, ra-dionuclides at serious activity levels will be produced in a target, magnetic horns, and partially dissolved into the cooling water. Radionuclides at serious activity levels will also be produced in the cooling water. Therefore, we measured the total activity and distribution of ~7Be, ~(22)Na, ~(54)Mn, ~(57)Co, ~(60)Co, ~(88)Y, ~(101g)Rh, ~(102m)Rh, and ~(110m)Ag collected on a demineralizer in the K2K water cooling system, in order to consider reducing both exposure to personnel from the demineralizer and radioactivity released by draining the cooling water at regular intervals inrnthe T2K experiment. The total activity of the individual nu-clides was estimated to range from 0.9 MBq to 0.7 GBq at the end of the 2-yr K2K operation. When the results are projected to the T2K experiment, 70 GBq of ~7Be and 6 GBq of ~(22)Na are particularly high, and shielding from the radiation must be provided for the entire water system. Half of the demineralizer was saturated with the Al. Cu, and Ag ions dissolved from the target and magnetic horns. When the entire column is saturated with the ions, all high activity of ~(22)Na located at the bottom of the demineralizer will be released into the cooling water immediately. Although ~(88)Y, ~(101g)Rh, and ~(102m)Rh cannot be collected completely because of weak retention by hydrolysis and/or association with colloid, a reduction in the surface area of the Ag metal is possible for new magnetic horns and will result in a decrease of the activities in the cooling water.
机译：从东海到神冈的长基线中微子振荡实验的一个新项目（T2K实验）中的束功率将比高能加速器研究组织（KEK）的一个长基线中微子振荡实验的光束强度高约100倍。 ）到神冈（K2K实验）。在T2K实验中，会在靶标，磁喇叭中产生具有严重活性的镭二聚核素，并部分溶解在冷却水中。冷却水中还会产生放射性水平很高的放射性核素。因此，我们测量了〜7Be，〜（22）Na，〜（54）Mn，〜（57）Co，〜（60）Co，〜（88）Y，〜（101g）Rh，〜的总活性和分布在K2K水冷却系统中，在除盐器上收集到的（102m）Rh和〜（110m）Ag，以考虑减少在T2K实验中从除盐器对人员的暴露以及通过定期排空冷却水而释放的放射性。在2年K2K操作结束时，单个核素的总活性估计为0.9 MBq至0.7 GBq。当将结果投影到T2K实验时，〜7Be的70 GBq和〜（22）Na的6 GBq特别高，必须为整个水系统提供辐射防护。一半的脱盐器中充满了Al。铜和银离子从靶角和磁喇叭中溶解。当整个色谱柱被离子饱和时，位于脱盐器底部的〜（22）Na的所有高活性将立即释放到冷却水中。尽管〜（88）Y，〜（101g）Rh和〜（102m）Rh由于水解和/或与胶体缔合的保留力弱而无法完全收集，但对于新型金属，Ag金属的表面积减小是可能的电磁角，将导致冷却水中的活性降低。

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  • 来源
    《Nuclear Technology》 |2009年第3期|979-983|共5页
  • 作者

    HIROSHI MATSUMURA; NORIKAZU KINOSHITA; AKIHIRO TOYODA; KAZUYOSHI MASUMOTO; KOTARO BESSHO; MASAYUKI HAGIWARA; YUTAKA YAMANOI;

  • 作者单位

    High Energy Accelerator Research Organization (KEK) Tsukuba, Ibaraki 305-0801, Japan;

    High Energy Accelerator Research Organization (KEK) Tsukuba, Ibaraki 305-0801, Japan;

    High Energy Accelerator Research Organization (KEK) Tsukuba, Ibaraki 305-0801, Japan;

    High Energy Accelerator Research Organization (KEK) Tsukuba, Ibaraki 305-0801, Japan;

    High Energy Accelerator Research Organization (KEK) Tsukuba, Ibaraki 305-0801, Japan;

    High Energy Accelerator Research Organization (KEK) Tsukuba, Ibaraki 305-0801, Japan;

    High Energy Accelerator Research Organization (KEK) Tsukuba, Ibaraki 305-0801, Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    cooling water; ion-exchange resin; K2K;

    机译：冷却水;离子交换树脂K2K;

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