A direct readout high-Tc dc SQUID electronics with ac bias and a liquid-nitrogen-cooled preamplifier

被引：1

作者：

Gudoshnikov, SA ^{[1
]}

Matveets, LV

Weidl, R

Dörrer, L

Seidel, P

Krasnosvobodtsev, SI

Kalabukhov, AS

Snigirev, OV

机构：

[1] Russian Acad Sci, Inst Terr Magnetism Ionosphere & Radio Wave Propa, Troitsk 142092, Moscow Region, Russia

[2] Univ Jena, Inst Festkorperphys, D-6900 Jena, Germany

[3] PN Lebedev Phys Inst, Moscow 117924, Russia

[4] Moscow MV Lomonosov State Univ, Dept Phys, Moscow 119899, Russia

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 1999年 / 9卷 / 02期

关键词：

D O I：

10.1109/77.783999

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Direct readout de SQUID electronics based on a liquid-nitrogen-cooled preamplifier and alternating current bias was developed. The preamplifier with an intrinsic voltage noise of 0.18 nV/Hz(1/2) was used as the first stage of this electronics. A mathematical description of the noise suppression by this electronics was done. Low-frequency noise was reduced by a factor of 6 at 1 Hz by this technique.

引用

页码：4397 / 4399

页数：3

共 22 条

[21] Dc electrical breakdown of liquid nitrogen under simulated quench state in pool cooled high Tc superconducting power apparatus Pt. 1. Analytical study of bubble behavior
Dep of Electrical and Electronic, Systems Engineering
Res Rep Inf Sci Electr Eng Kyushu Univ, 1 (23-33):
[22] Dc electrical breakdown of liquid nitrogen under simulated quench state in pool cooled high Tc superconducting power apparatus Pt. 2. Experimental study of bubble behavior and bubble-triggered breakdown characteristics
Hara, Masanori
Takano, Koji
Matsuura, Shunsuke
Wang, Zhen-Chao
Research Reports on Information Science and Electrical Engineering of Kyushu University, 1998, 3 (01): : 35 - 43

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