- Volume 26 Issue 3
STUDY ON THE ELECTRON GENERATION BY A MICRO-CHANNEL PLATE BASED ON EGS4 CALCULATIONS AND THE UNIVERSAL YIELD CURVE
- Moon, B.S. (Korea Atomic Energy Research Institute) ;
- Han, S.H. (Korea Atomic Energy Research Institute) ;
- Kim, Y.K. (Korea Atomic Energy Research Institute) ;
- Chung, C.E. (Korea Atomic Energy Research Institute)
- Published : 2001.09.30
The conversion efficiency of a cesium iodine coated micro-channel plate is studied. We use the EGS4 code to transport photons and generated electrons until their energies become less than 1keV and 10keV respectively. Among the generated electrons, the emission from the secondary electrons located within the escape depth of 56nm from the photo-converter boundary is estimated by integrating the product of the secondary electrons with a probability depending only on their geometric locations. The secondary electron emission from the generated electrons of energy higher than 100eV is estimated by the 'universal yield curve'. The sum of these provides an estimate for the secondary electron yield and we show that results of applying this algorithm agree with known experimental results. Using this algorithm, we computed secondary electron emissions from a micro-channel plate used in a gas electron multiplier detector that is currently being developed at Korea Atomic Energy Research Institute.