A new front-end 100 MHz time-to-digital electronics to study extensive air shower

A new 100 MHz time to digital electronics (time digitizer) is described. The time digitizer is characterized by a 10 nS time-resolution and low-power consumption. The simple design and low cost make it preferable for use in Extensive Air Showers (EAS) experiment. A description of the operation and tests of the time digitizer is presented. This electronics is used in an EAS experiment in Guwahati University to study UHE Cosmic Rays by Mini Array Method (Assam, India) (Bezboruah et al., Astro. part. phys. 11(3) (1999) 395). We present here the results of the time digitizer and the performances of it in this experiment.