Adrian Mancuso has been appointed as the physical science director for the United Kingdom’s national synchrotron, Diamond Light Source. Mancuso previously served as group leader and leading scientist for the Single Particles, Clusters, and Biomolecules & Serial Femtosecond Crystallography instrument group at the European X-Ray Free-Electron Laser Facility. Mancuso will be responsible for overall strategic leadership, direction, and management of Diamond’s Physical Science Division. Adrian Mancuso. Courtesy of Diamond Light Source. MENLO PARK, Calif. — Chi-Chang Kao, director of the DOE’s SLAC National Accelerator Laboratory, will step down from the role. Kao joined SLAC as a faculty member and associate lab director of the Stanford Synchrotron Radiation Lightsource in 2010, and was named SLAC’s fifth director in 2012. He will continue as director of the lab until a replacement is found. Kao cited a desire to return to research for his departure. Chi-Chang Kao. Courtesy of Jacqueline Ramseyer Orrell/SLAC National Accelerator Laboratory. DAVENPORT, Iowa — IPG Photonics/Genesis Systems promoted Matthew Sidlinger to director of sales. Sidlinger has been with the company for 23 years. POWAY, Calif. — Cohu, a supplier of equipment and services optimizing semiconductor manufacturing yield and productivity, appointed Andreas (Andy) Mattes to its board of directors. He will also serve on the compensation committee. Mattes most recently served as president and CEO of Coherent. Prior to that, he served as a senior adviser at McKinsey & Co. Mattes also serves on the board of Velodyne Lidar. ATHOL, Mass. — The L.S. Starrett Co. appointed Matthew Wells director of operations and continuous improvement. Wells will be responsible for production, planning, production control and purchasing, inventory management, warehouse and shipping, quality manufacturing engineering, facility, emergency health services, maintenance, and continuous improvement. Wells previously served in roles at Toyota Production Systems, Lean Manufacturing, and Six Sigma. He holds a bachelor’s degree in mechanical engineering and an MBA, both obtained at Western New England University. Matthew Wells. Courtesy of L.S. Starrett Co. RICHARDSON, Texas — Optex Systems Holdings, a manufacturer of precision optical sighting systems for domestic and worldwide military and commercial applications, appointed Dayton Judd to its board of directors. Judd is the founder and managing director of Sudbury Capital Management. He also serves as chairman and CEO of FitLife Brands. ANDOVER, Mass. — MKS Instruments named Henry Chang senior vice president and general manager Asia. Chang previously served as president of Alcon China. In his role at MKS, Chang will lead the Asia Pacific sales organization for the vacuum solutions division and the photonics solutions division, with dotted line responsibility for the associated functional organizations within Asia Pacific. WASHINGTON, D.C. — Optica named Alicia Jensen deputy senior director of operations for corporate engagement. She will be responsible for day-to-day operations of the corporate engagement department. Jensen previously served as director of commercial operations at medical technology company Stryker. FREMONT, Calif. — Cytek Biosciences named Chris Williams COO. Prior to joining Cytek, Williams served as vice president of engineering, technology, operations, and innovation for Thermo Fisher’s Pharma Services Group, and before that as vice president and general manager for single-use technologies and vice president and general manager for bioprocess equipment and automation at Thermo Fisher Scientific. He also served as vice president of site engineering for Bayer Pharmaceuticals Division. Chris Williams. Courtesy of Cytek Biosciences. NEWARK, Calif. — Display technology company Kateeva named Bin Liu CEO. Liu succeeds retiring CEO May Su. Liu joins Kateeva from Corning Inc. where he served as general manager of Gorilla Glass China. Liu’s leadership experience also includes roles at Motorola, Dell, Lenovo, Nokia, and NXP Semiconductors. QUEBEC CITY — Medical technology company Opsens’ CFO and corporate secretary Robin Villeneuve will be leaving the company Dec. 9. The company appointed Louis Laflamme, Opsens’ current president and CEO, to assume the role of interim CFO. Laflamme served as Opsens’ CFO between 2005 and 2013, prior to his appointment as president and CEO. The company plans to conduct a comprehensive search to find a permanent CFO.