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<section class="section-head docs-hero"><div><a class="docs-back" href="{{ url_for('web_docs') }}">← Web docs</a><p class="docs-eyebrow">Workflow 01</p><h1>Gratings</h1><p>Make an etched profile, save it, and run a scan from its detail page.</p></div><a class="button primary" href="{{ url_for('new_grating') }}">New grating</a></section>
<section class="docs-section"><h2>1. Define the grating</h2><p>Open <strong>Gratings → New grating</strong>. Enter a name, choose the profile type, and set its period and shape. Choose a bare substrate or a coating stack, then set materials and any density overrides. The <strong>Live preview</strong> lets you check the profile before you select <strong>Save grating</strong>.</p><figure class="docs-shot"><img src="{{ url_for('static', filename='web-docs/grating-form.png') }}" alt="New grating form showing profile controls beside the live preview" loading="lazy"><figcaption>Profile inputs and live preview on the New grating page.</figcaption></figure><p>Use <strong>Gratings → Manage gratings</strong> to reopen or edit a saved definition. Choose <strong>None</strong> as a coating material when you want an uncoated case in a material variation.</p></section>
<section class="docs-section"><h2>2. Set up a run</h2><p>Open the saved grating. In <strong>Run sweep</strong>, choose the workflow that matches your question: Energy sweep at a fixed grazing angle, Angle sweep at one energy, Monochromator at fixed CFF, or Constant deviation (2θ). The page shows the fields for the selected workflow.</p><p>Set diffraction order, polarization, numerical resolution, and solver in the shared settings. Add independent or coupled variations when comparing several parameter combinations. Check the count before choosing <strong>Run sweep</strong>.</p></section>
<section class="docs-section"><h2>3. Find and use the results</h2><p>Follow the run's progress and live plot. Later, open <strong>Gratings → Manage grating runs</strong> to find saved runs, inspect their settings, or download full result tables. For a comparison of selected curves, use <strong>Plots → New plot</strong>; that plot has its own Edit and Download actions.</p></section>
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