Cs₂Te photocathode response time measurements and femtosecond comb electron beam generation as a milestone towards pre-bunched THz FEL realization

A. Aryshev, Y. Honda, K. Lekomtsev, M. Shevelev, N. Terunuma, J. Urakawa

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Currently there is a rapidly growing demand to increase the brightness of electron beams generated by conventional RF guns as well as to decrease the cost of the injector accelerator system for many research facilities worldwide. To address this demand we investigate one of the most important parameter of the high Q.E. conventional semiconductor Cs₂Te photocathode, its response time. It sets the principle limitation for generated bunch length and hence maximum achievable beam brightness of electron diffraction and pre-bunched THz FEL facility's injectors. The experimental investigation was done at KEK: LUCX facility. The Cs2Te photocathode response time better than 250 fs was demonstrated. The generation of 4 micro-bunch comb electron beam with variable time separation as a crucial technology for pre-bunched THz FEL realization was achieved.

Original language	English
Title of host publication	IPAC 2016 - Proceedings of the 7th International Particle Accelerator Conference
Publisher	Joint Accelerator Conferences Website (JACoW)
Pages	3941-3943
Number of pages	3
ISBN (Electronic)	9783954501472
Publication status	Published - 2016
Externally published	Yes
Event	7th International Particle Accelerator Conference, IPAC 2016 - Busan, Korea, Republic of Duration: 8 May 2016 → 13 May 2016

Conference

Conference	7th International Particle Accelerator Conference, IPAC 2016
Country	Korea, Republic of
City	Busan
Period	8.5.16 → 13.5.16

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ASJC Scopus subject areas

Nuclear and High Energy Physics
Atomic and Molecular Physics, and Optics

Cite this

Aryshev, A., Honda, Y., Lekomtsev, K., Shevelev, M., Terunuma, N., & Urakawa, J. (2016). Cs₂Te photocathode response time measurements and femtosecond comb electron beam generation as a milestone towards pre-bunched THz FEL realization. In IPAC 2016 - Proceedings of the 7th International Particle Accelerator Conference (pp. 3941-3943). Joint Accelerator Conferences Website (JACoW).

Cs₂Te photocathode response time measurements and femtosecond comb electron beam generation as a milestone towards pre-bunched THz FEL realization. / Aryshev, A.; Honda, Y.; Lekomtsev, K.; Shevelev, M.; Terunuma, N.; Urakawa, J.

IPAC 2016 - Proceedings of the 7th International Particle Accelerator Conference. Joint Accelerator Conferences Website (JACoW), 2016. p. 3941-3943.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Aryshev, A, Honda, Y, Lekomtsev, K, Shevelev, M, Terunuma, N & Urakawa, J 2016, Cs₂Te photocathode response time measurements and femtosecond comb electron beam generation as a milestone towards pre-bunched THz FEL realization. in IPAC 2016 - Proceedings of the 7th International Particle Accelerator Conference. Joint Accelerator Conferences Website (JACoW), pp. 3941-3943, 7th International Particle Accelerator Conference, IPAC 2016, Busan, Korea, Republic of, 8.5.16.

Aryshev, A. ; Honda, Y. ; Lekomtsev, K. ; Shevelev, M. ; Terunuma, N. ; Urakawa, J. / Cs₂Te photocathode response time measurements and femtosecond comb electron beam generation as a milestone towards pre-bunched THz FEL realization. IPAC 2016 - Proceedings of the 7th International Particle Accelerator Conference. Joint Accelerator Conferences Website (JACoW), 2016. pp. 3941-3943

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