The D11 Small-Angle Scattering Instrument: A New Benchmark for SANS
The D11 Small-Angle Scattering Instrument: A New Benchmark for SANS
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D11 小角散射仪：SANS 的新基准
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
R. Schweins
中科院分区：
文献类型：
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作者：
Peter Lindner;R. Schweins
在2008-2009年关闭15个月进行重建后，新的D11（封面上）完全恢复了日常用户操作的时间表[1]。凭借其新的探测器[2]，D11提供了更宽的动态范围，这是由于更大的（1& m& ×& 1& m）探测器，更好的探测器分辨率和更短的死区时间。此外，由于基于创新设计变更的新准直导向器，样品位置处的中子通量显著增加[3]。因此，D11现在允许更好的质量小角中子散射（SANS）数据和软物质和生物学领域的新科学：更高的中子通量和更大的动态范围允许更快的实验，有利于时间分辨和动力学研究。随着更大的探测器，长度尺度的范围被探索是相当广泛的，无论是最低以及最高值的动量转移。该仪器自2009年3月26日重新启动以来运行非常可靠（图1显示了第一个用户组），2009年使用160天的束流时间进行71个不同的实验;我们的用户给了我们一个“优秀”的仪器性能。在下文中，我们将介绍一些科学亮点，如果没有新D11的更好性能，这些亮点是不可能实现的。
After a 15 month shutdown for reconstruction in 2008–2009, the new D11 (on the cover) is fully back on schedule for routine user operation [1]. With its new detector [2], D11 provides a broader dynamic range due to the larger (1& m& ×& 1& m) detector, a better detector resolution, and a shorter dead time. Furthermore, the neutron flux at the sample position is significantly increased due the new collimation guides, based on an innovative design change [3]. Thus, D11 allows now for better quality small-angle neutron scattering (SANS) data and new science in the field of soft matter and biology: the higher neutron flux and the increased dynamic range allow for faster experiments, favoring time-resolved and kinetic studies. With the larger detector, the range of length scales to be explored is considerably broadened, both for the lowest as well as for the highest values of momentum transfer. The instrument is running extremely reliable since its restart on 26 March 2009 (Figure 1 shows the first user group) using 160 days of beam time in 2009 for 71 different experiments; and our users gave us an “excellent” for instrument performance. In the following, we present some scientific highlights that would have been impossible without the better performance of the new D11.