| J. Jacob, D. Boilot, G. Debut, J. Pasquaud, M. Rossat, ESRF, Grenoble; P. Bosland, Ph. Brédy, S. Chel, M. Juillard, M. Maurier, A. Mosnier, CEA DSM, Gif-sur-Yvette; E. Chiaveri, R. Losito, CERN, Geneva; J.-M. Filhol, SOLEIL, Orsay
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A cryo-module prototype housing two superconducting 352MHZ-cavities was developed within the framework of the SOLEIL project design study phase. It is currently installed on the ESRF storage ring until the end of year 2002, in order to qualify the HOM-free operation. It will be tested with beam in the accelerating regime at 4.5K with the cavities cooled by liquid helium poured from Dewars. Four testing periods are programmed over the year, at the end of ESRF scheduled shutdowns. In order not to disturb the ESRF machine performances during the Users mode of operation, the cavities are maintained detuned at room temperature in a passive regime. The heat generated by the beam is then evacuated by a helium gas flow cooled by a heat exchanger. The main results of these tests as well as the possible improvements are described in this paper.
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