drift velocity
1.CALCULATION OF POOL VOID FRACTION BY DRIFT FLUX MODEL (Ⅰ) DRIFT VELOCITY
9.The lifetime of electrons, the drift velocity and diffusion are simulated and investigated, with the help of Garfield. With a theoretical analysis, a gas mixture of Argon, CH4 and CF4 is proposed. The performance of GEM with the proposed gas is excellent with regard to the gas gain and energy resolution, which makes it a promising candidate for the future GEM-based TPC.

