Norman McCubbin's career traces the entire arc of experimental particle physics from craft to cathedral. He started as a postdoc studying proton-proton collisions on CERN's first hadron collider in the 1970s — when the machines were smaller and the teams were manageable — and ended as director of the particle physics department at Rutherford Appleton Laboratory, overseeing Britain's contribution to the Large Hadron Collider, the most complex machine ever built. The trajectory matters because it's the trajectory of the field itself. McCubbin worked the Zeus experiment in Hamburg through the 1990s, probing the internal structure of the proton. He then pivoted to computing coordination for the Atlas experiment — one of the two detectors that would eventually confirm the Higgs boson in 2012. That shift from bench physicist to computing architect reflects how particle physics changed: the experiments got too large for any single scientist to run, and the people who made them work were increasingly the ones who built the data pipelines. His path to physics was characteristically indirect for mid-century British science. Born in Pinner, raised partly in Kenya and educated at Repton while his father followed a UN career through Lesotho and Taiwan, McCubbin landed at New College, Oxford, took a first in physics, and never really left the orbit of Oxford and CERN for the rest of his life. The boarding-school-to-Oxbridge pipeline was the standard delivery mechanism for British physicists of his generation. What distinguishes this obituary — written by his brother — is the portrait of a scientist who stayed curious past the point where institutional responsibilities usually kill curiosity. In retirement, McCubbin became a stipendiary lecturer at St Anne's College, Oxford, teaching thermodynamics, statistical mechanics, relativity, and symmetries to undergraduates. He was reportedly good at it, which is not guaranteed — research physicists and undergraduate tutors require different muscles. The detail that earns its place is McCubbin answering his seven-year-old great-nephew's questions about gravity and quantum entanglement via video call from New Zealand. That's the whole portrait in miniature: a man who spent decades working on questions about the structure of matter, and who found explaining centrifugal force to a child just as worthy of his attention. He died at 77, still tutoring. The obituary is quiet about cause of death, generous with professional detail, and written with the particular tenderness that only a sibling can manage without tipping into sentimentality.
