Brugger M, Khater H, Mayer S, Prinz A, Roesler S, Ulrici L, Vincke H
CERN, CH-1211 Geneva 23, Switzerland.
Radiat Prot Dosimetry. 2005;116(1-4 Pt 2):6-11. doi: 10.1093/rpd/nci051.
Samples of materials which will be used in the LHC machine for shielding and construction components were irradiated in the stray radiation field of the CERN-EU high-energy reference field facility. After irradiation, the specific activities induced in the various samples were analysed with a high-precision gamma spectrometer at various cooling times, allowing identification of isotopes with a wide range of half-lives. Furthermore, the irradiation experiment was simulated in detail with the FLUKA Monte Carlo code. A comparison of measured and calculated specific activities shows good agreement, supporting the use of FLUKA for estimating the level of induced activity in the LHC.
将用于大型强子对撞机（LHC）机器屏蔽和结构部件的材料样本，在欧洲核子研究组织（CERN）-欧盟高能参考场设施的杂散辐射场中进行了辐照。辐照后，使用高精度伽马能谱仪在不同冷却时间对各种样本中产生的比活度进行了分析，从而能够识别具有广泛半衰期的同位素。此外，使用FLUKA蒙特卡罗代码对辐照实验进行了详细模拟。测量的比活度与计算的比活度之间的比较显示出良好的一致性，这支持了使用FLUKA来估计大型强子对撞机中的感生活度水平。
