基于阻性阳极读出方法的气体电子倍增器二维成像性能

发布时间：2018-10-07 21:16

【摘要】：新型微结构气体探测器,如气体电子倍增器(gas electron multiplier,GEM)等,具有非常好的位置分辨率潜力(σ100μm),但是需要匹配大规模高密度的读出电子学,给探测器的建设、造价、功耗、空间利用等带来极大压力.阻性阳极读出方法可以在保持较高位置分辨率的前提下,大幅节省电子学.基于厚膜电阻工艺,一种新的阻性单元阵列结构被成功开发和应用于三级级联GEM探测器的读出阳极.该阻性阳极包括6×6个6 mm×6 mm的基本阻性单元,仅需匹配49路读出电子学.~(55)Fe放射源(5.9 keV)和X光机(8 keV)实验的结果显示探测器的位置分辨率(σ)可好于80μm,位置非线性好于1.5%.同时,探测器还获得了很好的实物成像效果.探测器的优良性能表明这种阻性阳极读出方法适用于大面积二维成像气体探测器的读出,并可用于其他探测器的读出.
[Abstract]:New microstructured gas detectors, such as gas electron multiplier (gas electron multiplier,GEM), have very good position resolution potential (蟽 100 渭 m), but need to match large scale high density readout electronics to the construction, cost, power consumption of the detector. Space use and so on bring great pressure. The resistive anode readout method can save electronics greatly on the premise of keeping high position resolution. Based on thick film resistance technology, a novel resistive cell array structure has been successfully developed and applied to the readout anode of three-stage cascaded GEM detectors. The resistive anode consists of 6 脳 6 basic resistive elements of 6 mm 脳 6 mm. The results of 49 readout electronics (5.9 keV) and X-ray machine (8 keV) experiments show that the position resolution (蟽) of the detector is better than 80 渭 m and the position nonlinearity is better than 1.5 渭 m. At the same time, the detector also achieved a good physical imaging effect. The excellent performance of the detector shows that the resistive anode readout method is suitable for large area two-dimensional imaging gas detector readout and can be used for other detectors.
【作者单位】：中国科学院高能物理研究所;核探测与核电子学国家重点实验室;中国科学院大学;
【基金】：国家自然科学基金(批准号:11375219)资助的课题~~
【分类号】：O572.212

【相似文献】