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| WEPMA011 |
Design and Operating Experience of Triode Electron Guns for Industrial Electron Accelerators
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348 |
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- A. Jain, A. R. Chindarkar, K. C. Mittal
BARC, Mumbai
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The Accelerator and Pulse Power Division of BARC is presently constructing three industrial electron accelerators for radiation applications. a) a 500 keV, 10 KW Cockcroft-Walton accelerator b) a 10 MeV ,10 KW RF electron linac and c) a 3 MeV, 30 KW DC machine. While the DC accelerators require an almost parallel beam with less than 0.5 degree divergence, the RF linac gun requires a 50 keV , 2 ampere pulsed beam of low emittance Using relativistic electron optics, including space charge effects, very simple triode gun designs with flat cathode, grid and anode apertures which fulfill these requirements and are easy to fabricate experimentally are described. Our operating experience with these guns will also be described.
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| THPMA043 |
Development of 3 MeV, 30 kW DC Electron Accelerator at EBC, Kharghar
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682 |
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- K. C. Mittal, S. Acharya, R. Agarwal, R. Barnwal, D. P. Chakravarthy, A. S. Chawala, A. R. Chindarkar, S. R. Ghodke, B. S. Israel, A. Jain, D. Jayaprakash, M. K. Kumar, M. K. Kumar, R. L. Mishra, K. V. Nagesh, K. Nanu, M. K. Pandey, G. P. Puthran, R. N. Rajan, S. R. Raul, A. K. Ray, P. C. Saroj, D. K. Sharma, V. Sharma, R. Shilendra, S. K. Suneet, S. B. Supriya, D. P. Suryaprakash
BARC, Mumbai
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A 3 MeV, 30 kW DC industrial electron accelerator has been designed and is in advanced stage of development at EBC, Kharghar, Navi Mumbai. Electron beam at 5 keV is generated in electron gun with LaB6 cathode and is injected into accelerating column at a vacuum of 10-7 torr. After acceleration, the beam is scanned and taken out in air through a 100 cm X 7 cm titanium window for radiation processing applications. The high voltage accelerating power supply is based on a capacitive coupled parallel fed voltage multiplier scheme operating at 120 kHz. A 50 kW oscillator feeds power to high voltage multiplier column. The electron gun, accelerating column and high voltage multiplier column are housed in accelerator tank filled with SF6 gas insulation at 6 kg/sq.cm. The accelerator is located in a RCC building with product conveyor for handling products. A central computerized control system is adopted for operation of the accelerator. Accelerator is in the advance stage of commissioning. This paper describes the design details and current status of the accelerator and its various subsystems.
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