  Bose-Einstein condensation has been achieved in a magnetic surface micro trap
with 4x10^5 87Rb atoms. The strongly anisotropic trapping potential is
generated by a microstructure which consists of microfabricated linear copper
conductors at a width ranging from 3 to 30 micrometer. After loading a high
number of atoms from a pulsed thermal source directly into a magneto-optical
trap (MOT) the magnetically stored atoms are transferred into the micro trap by
adiabatic transformation of the trapping potential. The complete in vacuo trap
design is compatible with ultrahigh vacuum below 2x10^(-11) mbar.
