1988
DOI: 10.1063/1.341227
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Two-pulse injector experiments with the RIIM electron accelerator

Abstract: The RADLAC-II accelerator foilless diode injector was operated under double-pulse conditions utilizing the RIIM accelerator as the test bed [M. G. Mazarakis, D. L. Smith, R. B. Miller, R. S. Clark, D. E. Hasti, D. L. Johnson, J. W. Poukey, K. R. Prestwich, and S. L. Shope, IEEE Trans. Nucl. Sci. NS-32, 3237 (1985)]. The original RIIM accelerator pulsed-power network was modified to provide for the generation, transmission, and delivery to the foilless diode of two distinct multimegavolt pulses with variable in… Show more

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“…Assuming that the pressure shock wave released from the target propagates towards the cathode with the speed of sound (~340m/sec), achieving a multi-pulse train spread in a one millisecond interval could require a minimum cathodetarget distance of 34 cm. However, estimates of reference [3] suggest a much faster pressure shock velocity of the order of 2.5x10 6 cm/sec. This number may be seriously affected by outgassing of the vacuum vessel since on those experiments a large number of plastic insulators surrounding the diode were present.…”
Section: Technical Approach and Leading Edge Nature Of Workmentioning
confidence: 95%
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“…Assuming that the pressure shock wave released from the target propagates towards the cathode with the speed of sound (~340m/sec), achieving a multi-pulse train spread in a one millisecond interval could require a minimum cathodetarget distance of 34 cm. However, estimates of reference [3] suggest a much faster pressure shock velocity of the order of 2.5x10 6 cm/sec. This number may be seriously affected by outgassing of the vacuum vessel since on those experiments a large number of plastic insulators surrounding the diode were present.…”
Section: Technical Approach and Leading Edge Nature Of Workmentioning
confidence: 95%
“…We propose a feasibility study to scientifically evaluate the idea of decoupling the anode converter from the cathode electron emitter, thus making the diode capable of producing more than one pulse. This work will be based on our vast experience in designing and fielding magnetically immersed foilles diodes [1][2][3][4][5][6][7][8][9][10] and specifically on two successful previous works we have accomplished: first, making a very small pencil-like beam in a magnetically immersed foilless diode [1,2,5]; and second, the successful demonstration of two-pulse operation of a foilles diode with the RIIM accelerator [3]. Our approach will combine the above experimentally demonstrated successful work.…”
Section: Technical Approach and Leading Edge Nature Of Workmentioning
confidence: 99%
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