From abf4e39d3884252c1f41f3e203ce11b3747e24f0 Mon Sep 17 00:00:00 2001
From: Anton Travleev <anton.travleev@gmail.com>
Date: Fri, 14 Aug 2026 09:22:39 +0200
Subject: [PATCH] Set `settings.source_rejection_fraction` to small value

---
 cad-based-geometry.ipynb | 1 +
 1 file changed, 1 insertion(+)

diff --git a/cad-based-geometry.ipynb b/cad-based-geometry.ipynb
index 063304a..0b589ef 100644
--- a/cad-based-geometry.ipynb
+++ b/cad-based-geometry.ipynb
@@ -608,6 +608,7 @@
     "settings.batches = 10\n",
     "settings.particles = 5000\n",
     "settings.run_mode = \"fixed source\"\n",
+    "settings.source_rejection_fraction = 1e-5\n",
     "\n",
     "space = openmc.stats.Box(*geometry.bounding_box)\n",
     "my_source = openmc.IndependentSource(space=space, domains=[water])\n",