When a cosmic particle hits matter it produces radio emission via the Askaryan
effect. This allows to use Earth's moon as detector for cosmic particles by
searching for these ns-pulses with radio telescopes. This technique potentially
increases the available collective area by several orders of magnitude compared
to current experiments. The LOw Frequency ARray (LOFAR) is the largest radio
telescope operating in the optimum frequency regime for corresponding searches.
In this contribution, we report on the design and status of the implementation
of the lunar detection mode at LOFAR.