A cryocooled helmet-shaped MEG measurement system

被引：4

作者：

Sata, K ^{[1
]}

Yoshida, T ^{[1
]}

Fujimoto, S ^{[1
]}

Miyahara, S ^{[1
]}

Kang, YM ^{[1
]}

机构：

[1] Daikin Ind Ltd, MEC Lab, Tsukuba, Ibaraki 3050841, Japan

来源：

SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 1999年 / 12卷 / 11期

关键词：

D O I：

10.1088/0953-2048/12/11/379

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We developed a cryocooled helmet-shaped magnetoencephalographic measurement system. We determined the sources of white noise that contribute to the total white noise of this system and determined the source of cyclic noise generated by the Gifford-McMahon-Joule-Thomson cryocooler. Design modifications based on these results will reduce the white noise of our future cryocooled systems to 5 fT Hz(-1/2) for cyclic noise to 1 pT.

引用

页码：959 / 962

页数：4