Calibration System for Zener Voltage Standards Using a 10 V Programmable Josephson Voltage Standard at NMIJ
Calibration System for Zener Voltage Standards Using a 10 V Programmable Josephson Voltage Standard at NMIJ
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NMIJ 使用 10 V 可编程约瑟夫森电压标准的齐纳电压标准校准系统
DOI：
10.1109/tim.2015.2411998
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发表时间：
2015
影响因子：
5.6
通讯作者：
N. Kaneko
中科院分区：
文献类型：
--
作者：
M. Maruyama;A. Iwasa;H. Yamamori;Shih;C. Urano;N. Kaneko
我们使用可编程约瑟夫森电压标准(PJVS)开发了齐纳电压标准的校准系统，以降低液氦消耗和提高校准性能。PJVS阵列由524288个基于NbN的过阻尼约瑟夫森结组成，由10K紧凑型制冷器冷却。为了验证该系统的有效性，将PJVS系统与我国传统的约瑟夫森电压标准系统进行了间接和直接的比较。结果表明，在标称电压为10V时，测量不确定度在8.4×10-10的相对扩展不确定度范围内是一致的。我们还讨论了使用我们的PJVS系统校准齐纳电压标准的不确定度来源。
We have developed a calibration system for the Zener voltage standards using a programmable Josephson voltage standard (PJVS) for liquid-helium consumption reduction and improvement in the calibration performance. The PJVS array is composed of 524288 niobium nitride (NbN)-based overdamped Josephson junctions and is cooled by a 10-K compact cooler. To verify the validity of the system, indirect and direct comparisons of the PJVS system and our conventional Josephson voltage standard system have been carried out. As a result, an agreement within a relative expanded uncertainty of 8.4 × 10-10 was obtained for a nominal voltage of 10 V. We also discuss the uncertainty sources in the calibration of the Zener voltage standards using our PJVS system.