Noise Thermometry with Commercial Squids
The design and construction of a noise thermometer built around two commercially available SQUID systems is presented. The thermometer is based upon the direct-coupled system of Webb, Gifford and Wheatley but uses a novel digital squarer/integrator to analyse the noise voltage. Preliminary results demonstrate the performance of the thermometer.
KeywordsCopper Wire Johnson Noise Flux Noise Flux Transformer Squid System
Unable to display preview. Download preview PDF.
- 4.M. Itoh, T. Mizusako and A. Hirai, in “Proc. of the 17th Int. Conf. on Low Temperature Physics”, (V. Eckern, A. Schmid, W. Weber and H. Wuhl, eds.) North Holland (1984) p. 1175.Google Scholar
- 5.M.L. Roukeis, R.S. Germain, M.R. Freeman and R.C. Richardson, ibid., p. 1177.Google Scholar
- 6.J. Tate, B. Cabrera and S.B. Felch, ibid., p. 1179.Google Scholar
- 7.S.N. Erne and H. Luther, ibid., p. 1181.Google Scholar
- 8.R. Malassis in “Proc. of the 3rd Int. Conf. on Superconducting Quantum Devices” (to be published).Google Scholar
- 9.M.L. Roukes, M.R. Freeman, R.S. Germain, R.C. Richardson and M.B. Ketchen, Phys. Rev. Lett., 55: 422 (1985).Google Scholar
- 10.J. Clarke, IEEE Transactions on Electron Devices, ED-27: 1896 (1980).Google Scholar