| Abstract: | The energy and angular resolution of a liquid xenon calorimeter for gamma rays in the GeV region is studied by a Monte-Carlo simulation. For a size of (70 cm)3, the energy resolution becomes as good as 0.2 % (r.m.s) at 10 GeV. The angular resolution is order of 1° (median angle) at several GeV without using the pair converter separated from the main body of the calorimeter. An effective SΩ of 1 m2sr is attainable. These factors meet the conditions required for observation of line gamma rays emerging from the annihilation of a sort of hypothetical dark matter. |
