| Автор | A V Lyashenko |
| Автор | A Breskin |
| Автор | R Chechik |
| Автор | J F C A Veloso |
| Автор | J M F Dos Santos |
| Автор | F D Amaro |
| Дата выпуска | 2006-10-01 |
| dc.description | We present and discuss in details a concept for the reduction of ion back-flow in GEM-based cascaded gaseous electron multipliers, by incorporating Micro-Hole & Strip Plate (MHSP) elements operating in reversed-bias mode (R-MHSP). About an order of magnitude reduction in ion back-flow is achieved by diverting back-drifting ions from their original path. A R-MHSP/2GEM/MHSP cascaded multiplier operated at total gain of ∼ 1.5 × 10<sup>5</sup> yielded ion back-flow fractions of 1.5 × 10<sup>-3</sup> and 4 × 10<sup>-4</sup>, at drift fields of 0.5 and 0.1 kV/cm, respectively. A 2R-MHSP/MHSP cascaded multiplier operated at a total gain of ∼ 10<sup>5</sup>, yielded an ion back-flow fraction of 3 × 10<sup>-3</sup>. We discuss the concept for trapping back-flowing ions in these cascaded multipliers and the relevance to gaseous photomultiplier and TPC applications; directions for future developments are outlined. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Advances in ion back-flow reduction in cascaded gaseous electron multipliers incorporating R-MHSP elements |
| Тип | paper |
| DOI | 10.1088/1748-0221/1/10/P10004 |
| Electronic ISSN | 1748-0221 |
| Журнал | Journal of Instrumentation |
| Том | 1 |
| Первая страница | P10004 |
| Последняя страница | P10004 |
| Выпуск | 10 |
