@misc{karge_calibrating_sans_2017, author={Karge, L., Gilles, R., Busch, S.}, title={Calibrating SANS data for instrument geometry and pixel sensitivity effects: Access to an extended Q range}, year={2017}, howpublished = {journal article}, doi = {https://doi.org/10.1107/S1600576717011463}, abstract = {An improved data-reduction procedure is proposed and demonstrated for small-angle neutron scattering (SANS) measurements. Its main feature is the correction of geometry- and wavelength-dependent intensity variations on the detector in a separate step from the different pixel sensitivities: the geometric and wavelength effects can be corrected analytically, while pixel sensitivities have to be calibrated to a reference measurement. The geometric effects are treated for position-sensitive 3He proportional counter tubes, where they are anisotropic owing to the cylindrical geometry of the gas tubes. For the calibration of pixel sensitivities, a procedure is developed that is valid for isotropic and anisotropic signals. The proposed procedure can save a significant amount of beamtime which has hitherto been used for calibration measurements.}, note = {Online available at: \url{https://doi.org/10.1107/S1600576717011463} (DOI). Karge, L.; Gilles, R.; Busch, S.: Calibrating SANS data for instrument geometry and pixel sensitivity effects: Access to an extended Q range. Journal of Applied Crystallography. 2017. vol. 50, no. 5, 1382-1394. DOI: 10.1107/S1600576717011463}}