#accelerators #physics Rectangular bends are OK, horizontal tune 0 (but different path lengths).   Sector bends are a complete disaster!   But an in-between one gives you roughly equal path lengths and a horizontal tune of 1.   <p><a href='posts/202511/post-20251115-235921-a.png'><img src='posts/202511/post-20251115-235921-a.png' loading='lazy' /></a></p><p><a href='posts/202511/post-20251115-235921-b.png'><img src='posts/202511/post-20251115-235921-b.png' loading='lazy' /></a></p><p><a href='posts/202511/post-20251115-235921-c.png'><img src='posts/202511/post-20251115-235921-c.png' loading='lazy' /></a></p>