TOFSANSResolution v1¶

Summary¶

Calculate the Q resolution for TOF SANS data.

Properties¶

Description¶

Compute the Q resolution for a given I(Q) for a TOF SANS instrument. The Q resolution is given as:

$\left( \frac{dQ}{Q}\right)^2 = \left( \frac{d\theta}{\theta} \right)^2 + \left( \frac{dt}{t} \right)^2 + \left( \frac{\Delta\lambda}{\lambda} \right)^2$

where $t$ is the time of flight, $\Delta\lambda$ is the wavelength bin width used when histogramming the data, and

$\left( \frac{d\theta}{\theta}\right)^2 = \frac{1}{12\theta^2}\left[ \frac{3 \ R_1^2}{L_1^2} + \frac{3 \ R^2_2 D^2}{L_1^2 L^2_2} + \frac{2 \ (p_x^2 + p_y^2)}{L^2_2} \right]$

Categories: AlgorithmIndex | SANS

Source¶

C++ header: TOFSANSResolution.h (last modified: 2021-03-31)

C++ source: TOFSANSResolution.cpp (last modified: 2021-03-31)