Accelerated Tests of Soft Errors in Network Systems Using a Compact Accelerator-Driven Neutron Source

作者：Iwashita Hidenori^*; Sato Hirotaka; Arai Kaoru; Kotanigawa Takashi; Kino Koichi; Kamiyama Takashi; Hiraga Fujio; Koda Katsutoshi; Furusaka Michihiro; Kiyanagi Yoshiaki

来源：IEEE Transactions on Nuclear Science, 2017, 64(1): 689-696.

DOI：10.1109/TNS.2016.2626005

• Accelerated test
• compact accelerator-driven neutron source
• fast neutron
• network system irradiation
• neutron beams
• neutron radiation effects
• soft error

The frequency of neutron-induced soft errors is increasing as devices become more integrated and miniaturized. Therefore, it has become more important recently to check reliability of a recovery system from the soft errors in network systems. For accelerated test, first we have examined possibility of the acceleration tests at a compact accelerator-driven neutron source, which is easy to adjust for soft-error tests and which also has low experimental costs. We selected the electron acceleratordriven neutron source at Hokkaido University as the compact accelerator-driven neutron source. We prepared a new targetreflector assembly composed of heavy metals to provide the fast neutrons, and conducted neutron-induced soft-error experiments on network equipments. As a result, we found that an accelerated rate of soft errors was about 106 times compared with that of the natural environment. We also investigated network equipment soft-error tolerance, fault detection and backup switching processes. Performing such testing before network equipment is actually deployed is critical for development of future network systems. Hence, the compact accelerator-based neutron source is a very useful tool.

• 出版日期2017-1