A low noise cryogenic preamplifier for the cosmic microwave background radiation anisotropy experiment

被引：2
|
作者：
Oh, ES [1 ]
Sharp, EH [1 ]
Fixsen, DJ [1 ]
Cheng, ES [1 ]
Inman, CA [1 ]
Silver, C [1 ]
机构：
[1] NASA, GSFC, Astron & Solar Phys Lab, Greenbelt, MD 20771 USA
来源：
REVIEW OF SCIENTIFIC INSTRUMENTS | 2001年 / 72卷 / 06期
关键词：
D O I：
10.1063/1.1372167
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
A cryogenic stage preamplifier for the TopHat experiment is built with InterFet NJ132L junction field effect transistors. We describe the testing procedure, screening, and fabrication of the six-channel preamplifier. It is attached to the LN2 shield and self-heats to 110 K with 20 mW total dissipation. The noise performance with grounded input is 7 nV root-mean-square (rms)/root Hz at 1.5 Hz and 1 nV rms/root Hz at 50 Hz. (C) 2001 American Institute of Physics.
引用
收藏
页码：2735 / 2737
页数：3
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