Calculating the Errors on the Feynman Variance,Y2F

[摘要] In a multi-channel detector we record the time of arrival of detected counts. We divide the timeline into separate gates of width T, and ask how many counts arrived in each gate. Finally, we form the count distribution histogram, B, a tally of how many gates had zero counts, how many had one count, ... For illustration, we'll use the gamma block data from NTS Run 20071114224434, RTO 1.2, which was RF1-24, 13.7 kg HEU with 2-inch Pb shielding. The count distribution for a gate width of 416 {micro}s is shown in Figure 1. Note that B is a vector across multiplicity, n. B also depends on the gate time, B = B(T) = B (T{sub i}), so we could just as well think of B as a rectangular matrix. For the moment we'll work with a fixed T, and use a single column of the full count distribution matrix. We'll leave the T dependence implicit.

[发布日期] 2009-07-10

[学科分类] 核物理和高能物理

[关键词] DISTRIBUTION;MULTIPLICITY;SHIELDING;VECTORS