Mechanical Engineering — Radiotherapy & Precision Motion Hardware

Stuart
Scollay

Senior Mechanical Engineer
Siemens Healthineers (Varian Medical Systems) — Palo Alto, CA

LinkedIn ↗ Patent record ↗

Notes

(unless otherwise specified)
  1. Mechanical engineer specializing in precision hardware for radiation-therapy systems and semiconductor / solar substrate-processing equipment.
  2. Presently Senior Mechanical Engineer at Siemens Healthineers, continuing multileaf-collimator and LINAC head-shielding work started at Varian Medical Systems, which Siemens Healthineers acquired in April 2021.
  3. Inventor of record on 8 U.S. patents and applications, filed 2005 through 2025.
  4. B.S. Mechanical Engineering, Stanford University, 2004.

Revision History

career, chronological
RevDescriptionDateLocation
A Mechanical Engineer — Intevac Design engineer for R&D projects transporting wafers and disks through vacuum systems; magnetic couplings for motion transfer; led development of a new transport method that raised machine throughput 25%. AVS-certified in Vacuum System Design. Jul 2004 – Sep 20095 yrs 3 mos Santa Clara, CA
B Sr. Mechanical Engineer — Solyndra Hardware and process development for laser-welded hermetic seals and custom laser-scribe optics; led a 5-person team building a rooftop panel-cleaning robot, field-tested in Germany; built machine-vision systems for bubble detection and robot navigation. Sep 2009 – Aug 20112 yrs Fremont, CA
C Mechanical Engineer — Varian Medical Systems Precision mechanical systems built to survive a decade of daily radiation exposure. Focus on multileaf collimator (MLC) design for the Halcyon treatment platform — Patent US 10,071,263. Nov 2011 – Mar 20197 yrs 5 mos Palo Alto, CA
D Sr. Mechanical Engineer — Siemens Healthineers Continued radiotherapy hardware engineering following Siemens Healthineers' April 2021 acquisition of Varian. Mar 2019 – Present7 yrs 7 mos Palo Alto, CA

Parts List

issued & pending patents
ItemDescriptionPart No.AssigneeFiled
01Processing Thin WafersUS 7,611,322Intevac2005
02Elevator Linear Motor DriveUS 8,834,088Intevac2007
03Magnetically Coupled Valve ActuatorUS 2008/0191155 (app.)Intevac2007
04Tools & Methods for Mounting Transport Rails in a Substrate Processing SystemUS 8,382,965Intevac2008
05System and Method for Substrate TransportUS 8,992,153Intevac2009
06Pivoting Multileaf Collimator and Method for Large Field CoverageUS 10,071,263Varian Medical Systems2014
07Radiation Shields for LINAC Head and SystemUS 10,322,300Varian Medical Systems2015
08Multi-Leaf Collimators and Radiotherapy Machines Including the SameUS 2026/0257077 (pending)Varian Medical Systems2025

Certification

stamp of record
B.S. Mechanical Engineering Stanford University, class of 2004 — foundation for a career spent moving hardware precisely, in vacuum and under radiation alike.