To determine an absorbed dose for proton and heavy ion beams, a quasi adiabatic solid calorimeter with carbon absorber was designed and constructed. The absorber is a graphite block with 2.5cm diameter and 4mm thick. It has contained three thermistors, one is used as a detector for the absorbed energy and the another two as the electrical temperature calibrators. We confirmed the system had a sufficient reliability to make the measurement of absorbed dose for dose rate larger than 0.5Gy/min.
