Analysis and Elimination of Typical Faults of Beam in Elekta Versa HD Medical Linear Accelerator
The beam system is the core module of the medical linear accelerator,which is mainly used for electron acceleration to form beam and beam shaping into radiation field.The beam system structure is complex,involves many circuit feedback signals,and is prone to all kinds of faults.This paper summarized two cases of beam system faults,including the beam transport system and beam shaping system.Through the analysis of fault phenomenon combined with the working principle,the beam fault caused by the aging of thyratron was solved by signal analysis and high voltage component replacement,as well as the primary scatterers reported faults one after another due to the damage of acquisition devices at different locations,the fault point was confirmed after the signal source detection and analogy.This pater clarifies the solution of such fault,which has reference significance for peers.
medical linear acceleratorbeam transport systembeam shaping systembeamthyratronscattererpulse-forming network
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