AL-1788-5220A.pdf

This is an engineering technical drawing for an Advanced Light Source (ALS) bend magnet beamline component, specifically a BL5.3.2.1 Branch Line mirror, created for Ernest Orlando Lawrence Berkeley National Laboratory (LBNL). The detailed technical schematic, released on March 6th, 2025, provides precise dimensional specifications for a rectangular silicon mirror with a toroidal surface and tangential radius.

The drawing includes detailed machining notes referencing ASME standards (Y14.5M, Y14.38M) for dimensioning, tolerancing, and surface finish. Key specifications include a permanent mark per EG-1002-1955, removal of burrs with 0.5 mm x 45° chamfer, and a prohibition on machining or marking operations after polishing. The document contains multiple section views (A-A, B-B) with precise measurements in millimeters, surface treatments, and a 1:2 scale representation of the mirror component.