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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 03</p><h1>Multilayer gratings</h1><p>Use a survey to find promising d-spacing and blaze-angle combinations, then inspect their energy response.</p></div><a class="button primary" href="{{ url_for('multilayer_design_new') }}">New multilayer grating</a></section>
<section class="docs-section"><h2>1. Create a study</h2><p>Open <strong>Multilayer grating → New multilayer grating</strong>. Name the study, define the grating geometry and multilayer materials, then enter the survey target energy and d-spacing and blaze-angle ranges. The page shows the number of theta searches implied by the grid. Choose <strong>Create study</strong>.</p><figure class="docs-shot"><img src="{{ url_for('static', filename='web-docs/multilayer-form.png') }}" alt="New multilayer design form showing study and survey inputs" loading="lazy"><figcaption>Study definition and survey controls on the new-design page.</figcaption></figure><p>If you already know you want the best survey design scanned over energy, tick <strong>When the survey finishes, scan the best design over energy automatically</strong>.</p></section>
<section class="docs-section"><h2>2. Run the survey</h2><p>On the study page, start the <strong>Survey</strong>. Each grid cell gets its own theta search. Watch progress there; after completion, inspect the efficiency map and plots of the best blaze angle and efficiency against d-spacing.</p></section>
<section class="docs-section"><h2>3. Scan selected designs over energy</h2><p>In <strong>Energy scan</strong>, choose <strong>Scan best</strong> for the survey's top design, <strong>Scan all d</strong> for one best blaze angle at each d-spacing, or <strong>Choose manually…</strong> to select pairs yourself. The resulting curves and plots appear on the same study page. Use <strong>Download script</strong> there to run the saved study outside the website.</p><p>Find studies again under <strong>Multilayer grating → Manage multilayer gratings</strong>. <strong>Edit parameters</strong> reopens the study form; changed inputs can mark completed stages stale until you rerun them.</p></section>
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