Title :
Development of high current density sheet beam electron gun for Terahertz devices
Author :
Srivastava, A. ; So, J.K. ; Park, G.S. ; Raju, R.S. ; Wang, Y. ; Wang, J.
Author_Institution :
Dept. of Phys. & Astron., Seoul Nat. Univ., Seoul
Abstract :
The development of high current density sheet beam electron gun for Terahertz devices is carried-out. It operates at beam voltage of 12 kV and perveance 0.0136 mup to meet ours requirement of high beam current density 100 A/cm2 and low emittance 0.068 pi-mm-mrad at the beam-waist position. Currently, mentioned gun is being fabricated. Work has been initiated to test the performance of Scandate cathode using anode-aperture mapping. Current density of 50 A/cm2 has been ensured across the beam cross-section of 100 times 600 mum2.
Keywords :
cathodes; electron guns; submillimetre waves; Scandate cathode; anode-aperture mapping; beam-waist position; high beam current density; sheet beam electron gun; terahertz devices; voltage 12 kV; Apertures; Cathodes; Current density; Electrodes; Electron beams; Shape; Space technology; Submillimeter wave devices; Submillimeter wave technology; Temperature; Scandate cathode; Smith-Purcell radiation; Terahertz; emittance; sheet beam;
Conference_Titel :
Vacuum Electronics Conference, 2008. IVEC 2008. IEEE International
Conference_Location :
Monterey, CA
Print_ISBN :
978-1-4244-1715-5
DOI :
10.1109/IVELEC.2008.4556328
