  The measurement of the radio emission from extensive air showers, induced by
high-energy cosmic rays is one of the key science projects of the LOFAR radio
telescope. The LOfar Radboud air shower Array (LORA) has been installed in the
core of LOFAR in the Netherlands. The main purpose of LORA is to measure the
properties of air showers and to trigger the read-out of the LOFAR radio
antennas to register extensive air showers. The experimental set-up of the
array of scintillation detectors and its performance are described.
