In this chapter I will describe the experiments done with our setup. In the first experiment (sec. 3.1) we determine the percentage of the channeltron signal caused by the He* atoms. in sec. 3.2 we measure the horizontal beamprofile with and without the collimator. In sec. 3.3 the effect of the detuning on the signal increase is investigated. In sec 3.4 we measure the mean speed and the velocity spread with use of a Time of Flight (TOF)-measurement. This measurement is done again in sec. 3.5, but now we vary the detuning of the collimator laser.