Аннотация
In this work we describe simulation and experimental studies of the possible reasons for the observed increase of the maximum gain in multi-GEM devices. Two main hypotheses are analyzed: First, a diffusion-dominated charge spread reducing the density in individual holes, acting as independent amplifiers and therefore an increase of the discharge limit with the number of cascaded electrodes; second, the possibility that total avalanche charge before transition to a discharge (Raether limit) strongly depends on the field value and is therefore much higher in cascaded than in single-stage systems.
Язык оригинала | английский |
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Номер статьи | 012033 |
Журнал | Journal of Physics: Conference Series |
Том | 1498 |
Номер выпуска | 1 |
DOI | |
Состояние | Опубликовано - 11 июн 2020 |
Событие | 6th International Conference on Micro Pattern Gaseous Detectors, MPGD 2019 - La Rochelle, Франция Продолжительность: 5 мая 2019 → 10 мая 2019 |