Abstract
Recently, details of modular cosmic ray detectors developed by the staff of the SVIRCO Observatory and Terrestrial Physics Laboratory (Rome, National Institute for Astrophysics) were published (Signoretti and Storini, 2011). Data recorded during June 2011 by a modular mobile neutron detector, equipped with a large helium counter (5.08 cm in diameter, 191 cm long) and assembled with twenty-three modules, were carefully checked and used to investigate the detector response to the perturbations originating on the Sun and travelling through the interplanetary medium. We show that at the Rome rigidity threshold (about 6.3 GV) the registered intensity well accounts for the macro perturbations in the near-Earth Space. Nevertheless, to investigate the fine structure of the perturbations the modular detector should operate at mountain altitudes or in polar areas.
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