主要技术参数:
探测类型:中子微通道板探测器
微通道板数量:2(chevron/tandem结构)
微孔直径:8μm直径
有成像面积:40mm ~ 150mm 直径
读出电子学:延迟线电极
像素尺寸:26μm
空间分辨率:50μm
时间分辨率:好于1μs(热中子)
探测一致性:85%
Gamma敏感性:约1%
背景计数率:<1ct/s/cm2
能量响应性能对比:
波长/能量 | Demountables + NeuViewTM MCP | 闪烁体(Li-6) +CCD |
QE* 0.9 Å (thermal/epi) | 约20% | 约5% |
1-2 Å(thermal) | 约40%(动态或静态) | 约10%(静态)<0.1%(动态) |
5 Å(cold) | 约70% | 约25(静态) |
30 Å(very cold) | 约80% | 约30%(静态) |
空间分辨率 | 约50μm ** | >200μm |
时间分辨率 | 约100ns | 约100ms(ungated),约1μm(gated) |
Gamma敏感度*** | 约1% |
*量子效率
**具体视中子束流分布和读出电子学而定,目前最好可达36μm
***量子检测效率 Gamma Sensitivity <10-6
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