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Merge pull request #220 from FAIRmat-NFDI/NXopt_overhaul
Overhaul of NXopt
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| <?xml version='1.0' encoding='UTF-8'?> | ||
| <?xml-stylesheet type="text/xsl" href="nxdlformat.xsl"?> | ||
| <!-- | ||
| # NeXus - Neutron and X-ray Common Data Format | ||
| # | ||
| # Copyright (C) 2014-2024 NeXus International Advisory Committee (NIAC) | ||
| # | ||
| # This library is free software; you can redistribute it and/or | ||
| # modify it under the terms of the GNU Lesser General Public | ||
| # License as published by the Free Software Foundation; either | ||
| # version 3 of the License, or (at your option) any later version. | ||
| # | ||
| # This library is distributed in the hope that it will be useful, | ||
| # but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| # Lesser General Public License for more details. | ||
| # | ||
| # You should have received a copy of the GNU Lesser General Public | ||
| # License along with this library; if not, write to the Free Software | ||
| # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
| # | ||
| # For further information, see http://www.nexusformat.org | ||
| --> | ||
| <!-- | ||
| A draft of a new base class to describe a window in a optical setup or device--> | ||
| <definition xmlns="http://definition.nexusformat.org/nxdl/3.1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" category="base" type="group" name="NXopt_window" extends="NXaperture" xsi:schemaLocation="http://definition.nexusformat.org/nxdl/3.1 ../nxdl.xsd"> | ||
| <doc> | ||
| A window of a cryostat, heater, vacuum chamber or a simple glass slide. | ||
|
|
||
| This first verion originates from NXopt to describe cryostate windows | ||
| and possible influences for ellipsometry measurements. | ||
|
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| For environmental measurements, the environment (liquid, vapor | ||
| etc.) is enclosed in a cell, which has windows both in the | ||
| direction of the source (entry window) and the detector (exit | ||
| window) (looking from the sample). In case that the entry and exit | ||
| windows are not the same type and do not have the same properties, | ||
| use a second 'WINDOW(NXaperture)' field. | ||
|
|
||
| The windows also add a phase shift to the light altering the | ||
| measured signal. This shift has to be corrected based on measuring | ||
| a known sample (reference sample) or the actual sample of interest | ||
| in the environmental cell. State if a window correction has been | ||
| performed in 'window_effects_corrected'. Reference data should be | ||
| considered as a separate experiment, and a link to the NeXus file | ||
| should be added in reference_data_link in measured_data. | ||
|
|
||
| The window is considered to be a part of the sample stage but also | ||
| beam path. Hence, its position within the beam path should be | ||
| defined by the 'depends_on' field. | ||
| </doc> | ||
| <group type="NXentry"> | ||
| <field name="window_effects_corrected" type="NX_BOOLEAN"> | ||
| <doc> | ||
| Was a window correction performed? If 'True' describe the window | ||
| correction procedure in 'window_correction/procedure'. | ||
| </doc> | ||
| </field> | ||
| <group name="window_correction" type="NXprocess"> | ||
| <doc> | ||
| Was a window correction performed? If 'True' describe the | ||
| window correction procedure in '' | ||
| </doc> | ||
| <field name="procedure"> | ||
| <doc> | ||
| Describe when (before or after the main measurement + time | ||
| stamp in 'date') and how the window effects have been | ||
| corrected, i.e. either mathematically or by performing a | ||
| reference measurement. In the latter case, provide the link to | ||
| to the reference data in 'reference_data_link'. | ||
| </doc> | ||
| </field> | ||
| <field name="reference_data_link"> | ||
| <doc> | ||
| Link to the NeXus file which describes the reference data if a | ||
| reference measurement for window correction was performed. | ||
| Ideally, the reference measurement was performed on a reference | ||
| sample and on the same sample, and using the same conditions as | ||
| for the actual measurement with and without windows. It should | ||
| have been conducted as close in time to the actual measurement | ||
| as possible. | ||
| </doc> | ||
| </field> | ||
| </group> | ||
| <field name="material" type="NX_CHAR"> | ||
| <doc> | ||
| The material of the window. | ||
| </doc> | ||
| <enumeration> | ||
| <item value="quartz"/> | ||
| <item value="diamond"/> | ||
| <item value="calcium fluoride"/> | ||
| <item value="zinc selenide"/> | ||
| <item value="thallium bromoiodide"/> | ||
| <item value="alkali halide compound"/> | ||
| <item value="Mylar"/> | ||
| <item value="other"/> | ||
| </enumeration> | ||
| </field> | ||
| <field name="material_other" type="NX_CHAR"> | ||
| <doc> | ||
| If you specified 'other' as material, decsribe here what it is. | ||
| </doc> | ||
| </field> | ||
| <field name="thickness" type="NX_FLOAT" units="NX_LENGTH"> | ||
| <doc> | ||
| Thickness of the window. | ||
| </doc> | ||
| </field> | ||
| <field name="orientation_angle" type="NX_FLOAT" units="NX_ANGLE"> | ||
| <doc> | ||
| Angle of the window normal (outer) vs. the substrate normal | ||
| (similar to the angle of incidence). | ||
| </doc> | ||
| </field> | ||
| </group> | ||
| </definition> |
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