Cosmic-gate: A Cosmic Rays Detector for Public Exhibition

摘要

To celebrate world year of astronomy in 2009, the Taipei Astronomical Museum conducted a special exhi-bition on the topics of 'fundamental particle and cosmic ray '.We made a door -like cosmic rays detector, called cos-mic-gate, and it was placed at the entrance of exhibition hall. Cosmic-gate consists of five plastic scintillators and 6sets of photomultiplier tubes and read-out electronics. Triggered events are recorded and displayed in a big-screenmonitor. Spectators can know how many secondary cosmic rays pass through this area when they step into the exhibi-tionhall through the Cosmic-gate. This paper describes the details of cosmic-gate and present some data collectedduring exhibition and the following year.