Experimental program to build a multimegawatt lasertron for super linear colliders

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A lasertron (a microwave ''triode'' with an RF output cavity and an RF modulated laser to illuminate a photocathode) is a possible high power RF amplifier for TeV linear colliders. As the first step toward building a 35 MW, S-band lasertron for a proof of principle demonstration, a 400 kV dc diode is being designed with a GaAs photocathode, a drift-tube and a collector. After some cathode life tests are made in the diode, an RF output cavity will replace the drift tube and a mode-locked, frequency-doubled, Nd:YAG laser, modulated to produce a 1 us-long comb of 60 ps pulses ... continued below

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Pages: 4

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Garwin, E.L.; Herrmannsfeldt, W.B.; Sinclair, C.; Weaver, J.N.; Welch, J.J. & Wilson, P.B. April 1, 1985.

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Description

A lasertron (a microwave ''triode'' with an RF output cavity and an RF modulated laser to illuminate a photocathode) is a possible high power RF amplifier for TeV linear colliders. As the first step toward building a 35 MW, S-band lasertron for a proof of principle demonstration, a 400 kV dc diode is being designed with a GaAs photocathode, a drift-tube and a collector. After some cathode life tests are made in the diode, an RF output cavity will replace the drift tube and a mode-locked, frequency-doubled, Nd:YAG laser, modulated to produce a 1 us-long comb of 60 ps pulses at a 2856 MHz rate, will be used to illuminate the photocathode to make an RF power source out of the device. This paper discusses the plans for the project and includes some results of numerical simulation studies of the lasertron as well as some of the ultra-high vacuum and mechanical design requirements for incorporating a photocathode.

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Pages: 4

Notes

NTIS, PC A02/MF A01; 1.

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  • Particle accelerator conference, Vancouver, Canada, 13 May 1985

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  • Other: DE85014293
  • Report No.: SLAC-PUB-3650
  • Report No.: CONF-850504-192
  • Grant Number: AC03-76SF00515
  • Office of Scientific & Technical Information Report Number: 5558848
  • Archival Resource Key: ark:/67531/metadc1092595

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • April 1, 1985

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  • Feb. 10, 2018, 10:06 p.m.

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  • May 29, 2018, 2:48 p.m.

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Garwin, E.L.; Herrmannsfeldt, W.B.; Sinclair, C.; Weaver, J.N.; Welch, J.J. & Wilson, P.B. Experimental program to build a multimegawatt lasertron for super linear colliders, article, April 1, 1985; California. (digital.library.unt.edu/ark:/67531/metadc1092595/: accessed September 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.