arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1809.04594physics.ins-dethep-exnucl-ex
收藏

硅光电倍增器中子和γ辐照效应的比较

A Comparison of the Effects of Neutron and Gamma Radiation in Silicon Photomultipliers

B. Biró, G. David, A. Fenyvesi, J. S. Haggerty, J. Kierstead, E. J. Mannel, T. Majoros, J. Molnar, F. Nagy, S. Stoll, B. Ujvari, C. L. Woody

摘要:

测量了γ射线对硅光电倍增器(SiPMs)的辐照损伤效应,并与中子辐照损伤作了比较。在布鲁克海文国家实验室和匈牙利德布勒森核研究所的固态伽马射线辐照设施(SSGRIF)中,将来自滨松的几种MPPC暴露于伽马射线和中子。伽马射线暴露范围为1 krad至1 Mrad,中子暴露范围为10 $^8$ n/cm $^2$至10 $^{12}$ n/cm $^2$。伽马射线损伤的主要影响是增加噪声和泄漏电流的照射设备,类似于从中子损伤所看到的,但损伤的水平是相当少的在相当高的曝光水平。此外,伽马射线的损伤在几百krad后饱和,而中子的损伤没有显示出饱和的迹象,这表明两种情况下的不同损伤机制。还测量了由于辐射导致的SiPM的窗口材料中的光吸收的变化。进行这项研究,以评估使用SiPM的粒子物理应用与中等水平的辐射暴露。

英文摘要:

The effects of radiation damage in silicon photomultipliers (SiPMs) from gamma rays have been measured and compared with the damage produced by neutrons. Several types of MPPCs from Hamamatsu were exposed to gamma rays and neutrons at the Solid State Gamma Ray Irradiation Facility (SSGRIF) at Brookhaven National Lab and the Institute for Nuclear Research (Atomki) in Debrecen, Hungary. The gamma ray exposures ranged from 1 krad to 1 Mrad and the neutron exposures ranged from 10$^8$ n/cm$^2$ to 10$^{12}$ n/cm$^2$. The main effect of gamma ray damage is an increase in the noise and leakage current in the irradiated devices, similar to what is seen from neutron damage, but the level of damage is considerably less at comparable high levels of exposure. In addition, the damage from gamma rays saturates after a few hundred krad, while the damage from neutrons shows no sign of saturation, suggestive of different damage mechanisms in the two cases. The change in optical absorption in the window material of the SiPMs due to radiation was also measured. This study was carried out in order to evaluate the use of SiPMs for particle physics applications with moderate levels of radiation exposures.

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。

↑