title: A simple radiation beam position monitor.
authors: Cancer Research Campaign Gray Laboratory, Mount Vernon Hospital, Northwood, Middlesex, UK.
authors: B
authors: B
authors: Vojnovic
authors: D S
authors: DS
authors: Sehmi
authors: R G
authors: RG
authors: Newman
mesh_terms: D006801:Humans; D010315:Particle Accelerators; D011878:Radiotherapy / Q000295:instrumentation*