A solar neutron telescope in Tibet and its capability examined by the 1998 November 28th event

A new solar neutron telescope has been constructed at Yangbajing, Tibet (600 g/cm(2)) and has been successfully operated for 8 years. During this time several interesting events were observed in coincidence with large solar flares. In this paper the authors discuss a directional count rate enhancement 1998 November 28 as to whether it is related to solar phenomena or not. We use this event to evaluate the sensitivity of the solar neutron telescope and discuss the detection limit for solar neutrons and high energy solar protons of this detector. (C) 2007 Elsevier B.V. All rights reserved.