Author: Vinod, G.
Paper Title Page
WEPAB387 Study of Failure Modes in Electron Linac-Based X-Ray Sources for Industrial Applications 3622
 
  • K.P. Dixit, G. Vinod
    BARC, Mumbai, India
  
  Elec­tron linac-based X-ray sources (XRS) have an in­creased de­mand in in­dus­trial ap­pli­ca­tions, mainly for their ad­van­tages of com­pact­ness and ease of use. In order to achieve re­li­able op­er­a­tion, it is nec­es­sary to have rugged com­po­nents in the linac sys­tem. Hence, this study fo­cusses on achiev­ing high re­li­a­bil­ity de­sign; also in for­mu­lat­ing a pre­ven­tive main­te­nance pro­gramme to op­ti­mise the avail­abil­ity and prog­nos­tic meth­ods for per­for­mance mon­i­tor­ing of com­po­nents. This paper in­ves­ti­gates the fail­ure modes in the im­por­tant sub-sys­tems of a 6 MeV elec­tron linac, in­clud­ing elec­tron gun, RF power source, vac­uum sys­tem, x-ray tar­get, con­trol sys­tem, etc. Elec­tron guns suf­fer from prob­lems re­lated to the fil­a­ment heater dam­age and high volt­age in­su­la­tion fail­ure. In the RF source, major com­po­nents (line-type pulsed mod­u­la­tors, mag­netrons, cir­cu­la­tor and RF win­dow) are stud­ied to as­sess their life. Fault tree analy­sis of the in­di­vid­ual sub-sys­tems and the ef­fect of in­di­vid­ual fail­ures on the linac down-time are stud­ied. A few mit­i­ga­tion tech­niques used in prac­ti­cal sys­tems are also dis­cussed here.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-WEPAB387  
About • paper received ※ 18 May 2021       paper accepted ※ 23 July 2021       issue date ※ 29 August 2021  
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