LOW-NOISE FRONT-END ELECTRONICS FOR DILUTION REFRIGERATOR EXPERIMENTS

Authors
STOCKWELL W YVON D AUBOURG E BARNES PD CUMMINGS A DASILVA A ELLMAN B ROSS RR SADOULET B SHUTT T SMITH G STUBBS C WANG N WHITE S YOUNG BA
Citation
W. Stockwell et al., LOW-NOISE FRONT-END ELECTRONICS FOR DILUTION REFRIGERATOR EXPERIMENTS, Journal of low temperature physics, 93(3-4), 1993, pp. 755-760
Citations number
3
Categorie Soggetti
Physics, Applied
Journal title
Journal of low temperature physics → ACNP
ISSN journal
00222291
Volume
93
Issue
3-4
Year of publication
1993
Pages
755 - 760
Database
ISI
SICI code
0022-2291(1993)93:3-4<755:LFEFDR>2.0.ZU;2-S
Abstract
We have developed low noise voltage and low noise charge sensitive pre amplifiers for use in dilution refrigerator experiments. The amplifier s use a JFET at 140K as the front end. Each JFET dissipates about 7 mW on the 4K heat sink. The flat noise of the voltage amplifier is 0.9 n V/Hz1/2, with the 1/f knee below 100 Hz. The charge amplifier noise is 500 eV with a total input capacitance of approximately 90 pF.