A COLTRIMS SPECTROMETER WITH LASER COOLED TARGET:\\ ELECTRON TRANSFER IN Li$^+$ + Na $\rightarrow$ Li + Na$^+$ COLLISIONS Mike van der Poel$^\ast$, Mirela-Alina Gearba$^\ast$, Carsten V. Nielsen$^\ast$, Jan W. Thomsen$^\ast$ and Nils Andersen$^\ast$\\ Volker Mergel$^\sharp$, Reinhard D\"orner$^\sharp$ and Horst Schmidt-B\"ocking$^\sharp$ $^\ast$Niels Bohr Institute, \O rsted Laboratory, Universitetsparken 5, DK-2100 Copenhagen, Denmark \\ $^\sharp$Institut f\"ur Kernphysik der Universit\"at Frankfurt, August-Euler-Str. 6, D-60486 Frankfurt, Germany We have built an apparatus involving a combination of COLd Target Recoil Ion Momentum Spectroscopy (COLTRIMS) with a laser cooled target. With this experimental technique we shall investigate differential scattering in electron transfer Li$^{+}$ + Na collisions in the keV regime, where typical scattering angles are too small to be measured with conventional scattering techniques. Full text