A low noise cryogenic preamplifier for the cosmic microwave background radiation anisotropy experiment
| ISSN: |
1089-7623
|
|---|---|
| Source: |
AIP Digital Archive
|
| Topics: |
Physics
Electrical Engineering, Measurement and Control Technology
|
| Notes: |
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)/Hz at 1.5 Hz and 1 nV rms/Hz at 50 Hz. © 2001 American Institute of Physics.
|
| Type of Medium: |
Electronic Resource
|
| URL: |