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VESUVIO_Parameters.xml
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VESUVIO_Parameters.xml
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<?xml version="1.0" encoding="UTF-8" ?>
<parameter-file instrument = "VESUVIO">
<component-link name = "VESUVIO">
<!-- The monitor spectrum -->
<parameter name="monitor_spectrum">
<value val="1"/>
</parameter>
<!-- Back scattering spectrum numbers -->
<parameter name="backward_scatter_spectra" type="string">
<value val="3-134"/>
</parameter>
<!-- Forward scattering spectrum numbers -->
<parameter name="forward_scatter_spectra" type="string">
<value val="135-198"/>
</parameter>
<!-- Maximum TOF for loaded raw data (monitors use mon_tof_max below) -->
<parameter name="tof_max">
<value val="600"/>
</parameter>
<!-- Maximum TOF for loaded monitor data -->
<parameter name="monitor_tof_max">
<value val="700"/>
</parameter>
<!-- Constant that sets the monitor scale -->
<parameter name="monitor_scale">
<value val="1000"/>
</parameter>
<!-- Double-difference mixing parameter (beta) -->
<parameter name="double_diff_mixing">
<value val="0.28"/>
</parameter>
<!-- ======== Normalisation ranges. ========
These are different depending for the forward/backward scattering banks.
-->
<!-- Backward Scattering -->
<!-- Sum over lower range -->
<parameter name="backward_period_sum1" type="string">
<value val="300-400"/>
</parameter>
<!-- Sum over upper range -->
<parameter name="backward_period_sum2" type="string">
<value val="550-600"/>
</parameter>
<!-- Monitor normalisation -->
<parameter name="backward_monitor_norm" type="string">
<value val="600-700"/>
</parameter>
<!-- Normalisation by foil out -->
<parameter name="backward_foil_out_norm" type="string">
<value val="410-430"/>
</parameter>
<!-- ====================================================== -->
<!-- Forward Scattering -->
<!-- Sum over lower range -->
<parameter name="forward_period_sum1" type="string">
<value val="100-400"/>
</parameter>
<!-- Sum over upper range -->
<parameter name="forward_period_sum2" type="string">
<value val="550-600"/>
</parameter>
<!-- Monitor normalisation -->
<parameter name="forward_monitor_norm" type="string">
<value val="600-700"/>
</parameter>
<!-- Normalisation by foil out -->
<parameter name="forward_foil_out_norm" type="string">
<value val="400-450"/>
</parameter>
<!-- ======== Fitting parameters ========
These are currently at the instrument level but some may need
move to the component level
-->
<!-- Standard deviation of source-sample distribution (metres) -->
<parameter name="sigma_l1">
<value val="0.021"/>
</parameter>
<!-- Standard deviation of sample-detector distribution (metres) -->
<parameter name="sigma_l2">
<value val="0.023"/>
</parameter>
<!-- Standard deviation of detector theta distribution (radians) -->
<parameter name="sigma_theta">
<value val="0.028"/>
</parameter>
<!-- Final energy of neutrons (meV) (Currently common but should it be?) -->
<parameter name="efixed">
<value val="4908"/>
</parameter>
<!-- Lorentzian HWHM of the foil analyser energy (efixed) (meV) -->
<parameter name="hwhm_energy_lorentz">
<value val="24"/>
</parameter>
<!-- Gaussian standard deviation of the foil analyser energy (efixed) (meV)
Note that this is not the HWHM but the standard deviation unlike the
Lorentzian parameter -->
<parameter name="sigma_energy_gauss">
<value val="73"/>
</parameter>
<!-- ====================================================== -->
</component-link>
</parameter-file>