{"references": ["A. B\u00e9trancourt and E. Bretagne, CRISTA : Logiciel de calcul de points\nde fonctionnement des r\u00e9frig\u00e9rateurs thermoacoustiques, 2004.", "G. W. Swift, D. L. Gardner and S. Backhaus, \"Acoustic recovery of lost\npower in pulse tube refrigerators\", Journal of the Acoustical Society of\nAmerica, Vol. 105, 2, pp. 711-724, 1999.", "J. R. Olson and G. W. Swift, \"Acoustic streaming in pulse tube\nrefrigerators: Tapered pulse tubes\", Cryogenics, Vol. 37, pp. 769-776,\n1997.", "A. M. Fusco, W. C. Ward and G. W. Swift, \"Two-sensor power\nmeasurements in lossy ducts\", Journal of the Acoustical Society of\nAmerica, Vol. 91, 4, pp. 2229-2235, 1992."]}

The performances of a thermoacoustic travelling-wave refrigerator are presented. Developed in the frame of the European project called THATEA, it is designed for providing 600 W at a temperature of 233 K with an efficiency of 40 % relative to the Carnot efficiency. This paper presents the device and the results of the first measurements. For a cooling power of 210 W, a coefficient of performance relative to Carnot of 30 % is achieved when the refrigerator is coupled with an existing standing-wave engine.