Design and development of a 40 kV Pierce electron gun

D Bhattacharjee,R N Tiwari,D Jayaprakash,R L Mishra,A R Tillu,Bibhuti B Nayak,A Waghmare, H Sarukte,K C Mittal,L M Gantayet

Discharges and Electrical Insulation in Vacuum（2014）

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摘要

A 40 kV electron gun is designed and developed using the Pierce configuration for the focusing electrode. Simulations were carried out using CST Particle Studio. The Gun is a thermionic type electron gun with indirect heating of the LaB6 cathode. The gun is capable of delivering a beam current of more than 500 mA at 40 kV with a beam size of less than 5 mm. The cathode assembly consists of cups and heat shields made out of Tantalum and Rhenium sheets. The cathode assembly and the electron gun was fabricated, assembled and tested on test bench for cathode conditioning, HV conditioning and beam characterization. This paper presents the gun design, particle simulations study, testing of the gun on test bench.

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关键词

cathodes,electron guns,thermionic electron emission,cst particle studio,hv conditioning,lab6 cathode,pierce configuration,pierce electron gun,beam characterization,cathode assembly,cathode conditioning,cups,focusing electrode,gun design,gun testing,heat shields,indirect heating,particle simulations study,rhenium sheets,tantalum sheets,thermionic type electron gun,voltage 40 kv,assembly,ceramics,anodes,heating

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