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arXiv 2202.12809physics.ins-detphysics.acc-ph
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CERN中子飞行时间设施辐照站的设计开发和实施

Design development and implementation of an irradiation station at the neutron time-of-flight facility at CERN

M. Ferrari, D. Senajova, O. Aberle, Y. Aguiar, D. Baillard, M. Barbagallo, A. -P. Bernardes, L. Buonocore, M. Cecchetto, V. Clerc, M. Di Castro, R. Garcia Alia,… 展开作者

M. Ferrari, D. Senajova, O. Aberle, Y. Aguiar, D. Baillard, M. Barbagallo, A. -P. Bernardes, L. Buonocore, M. Cecchetto, V. Clerc, M. Di Castro, R. Garcia Alia, S. Girod, J. -L. Grenard, K. Kershaw, G. Lerner, M. Maeder, A. Makovec, A. Mengoni, M. Perez Ornedo, F. Pozzi, C. V. Almagro, M. Calviani

摘要:

一个新的寄生式、混合场、中子为主的辐照站最近已在欧洲粒子物理实验室(CERN)投入使用。该站安装在中子飞行时间设施中,利用中子散射靶产生的二次辐射。新的台站允许在更接近于粒子加速器运行期间所遇到的辐照条件下进行辐射损害研究;在台站进行的辐照试验将补充通常用伽马源进行的材料标准试验。样品将每年暴露于MGy范围内的中子剂量,对n TOF设施运行的影响最小。该工作站有24个辐照位置,每个位置可容纳多达100 cm 3的样品材料。鉴于其接近nTOF靶,在保护屏蔽内,考虑到人员的安全并避免对nTOF设施和实验的操作产生任何不必要的影响,已经仔细地开发了辐照站及其操作程序。由于nTOF靶周围的整个区域和辐照样品的残留放射性,即使当nTOF设施不运行时,也禁止人类操作员进入辐照站。机器人用于远程安装和取回样品,并根据辐射防护条例和最大限度地减少人员剂量的目的,对处理程序进行了其他优化。

英文摘要:

A new parasitic, mixed-field, neutron-dominated irradiation station has been recently commissioned at the European Laboratory for Particle Physics (CERN). The station is installed in the Neutron Time-Of-Flight (n\_TOF) facility, taking advantage of the secondary radiation produced by the neutron spallation target. The new station allows radiation damage studies to be performed in irradiation conditions that are closer to the ones encountered during the operation of particle accelerators; the irradiation tests carried out in the station will be complementary to the standard tests on materials, usually performed with gamma sources. Samples will be exposed to neutron doses in the MGy range per year, with minimal impact on the n TOF facility operation. The station has twenty-four irradiation positions, each hosting up to 100 cm3 of sample material. In view of its proximity to the n\_TOF target, inside protective shielding, the irradiation station and its operating procedures have been carefully developed taking into account the safety of personnel and to avoid any unwanted impact on the operation of the n\_TOF facility and experiments. Due to the residual radioactivity of the whole area around the n\_TOF target and of the irradiated samples, access to the irradiation station is forbidden to human operators even when the n\_TOF facility is not in operation. Robots are used for the remote installation and retrieval of the samples, and other optimizations of the handling procedures were developed in compliance with radiation protection regulations and the aim of minimizing doses to personnel.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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