Enhancement of the positron intensity by a tungsten single-crystal target at the KEKB injector linac

T. Suwada, M. Satoh, T. Sugimura, T. Kamitani, K. Furukawa, K. Umemori, H. Okuno, T. Haruna, R. Hamatsu, T. Sumiyoshi, K. Yoshida, A. P. Potylitsin, I. S. Tropin, R. Chehab

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

A new tungsten single-crystal target has been successfully employed at the positron source of the KEKB injector linac. The crystal thickness was determined to be 10.5 mm based on the previous systematic measurements of the positron-production efficiency. The crystal axis, 〈111〉, was precisely aligned to the direction of the 4-GeV primary electron beam. The positron yield increased by ∼25% compared to that for a conventional tungsten plate with a thickness of 14 mm. On the contrary, the heat load on the crystal target decreased by ∼20%. No degradation of the positron-production efficiency was observed since the crystal target was installed in September 2006, and it has been stably operating at the KEK B-factory.

Original languageEnglish
Title of host publicationProceedings of the IEEE Particle Accelerator Conference
Pages2778-2780
Number of pages3
DOIs
Publication statusPublished - 2007
EventIEEE Particle Accelerator Conference, PAC07 - Albuquerque, NM, United States
Duration: 25 Jun 200729 Jun 2007

Other

OtherIEEE Particle Accelerator Conference, PAC07
CountryUnited States
CityAlbuquerque, NM
Period25.6.0729.6.07

Fingerprint

Positrons
Tungsten
Single crystals
Crystals
Thermal load
Industrial plants
Electron beams
Degradation

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Suwada, T., Satoh, M., Sugimura, T., Kamitani, T., Furukawa, K., Umemori, K., ... Chehab, R. (2007). Enhancement of the positron intensity by a tungsten single-crystal target at the KEKB injector linac. In Proceedings of the IEEE Particle Accelerator Conference (pp. 2778-2780). [4440573] https://doi.org/10.1109/PAC.2007.4440573

Enhancement of the positron intensity by a tungsten single-crystal target at the KEKB injector linac. / Suwada, T.; Satoh, M.; Sugimura, T.; Kamitani, T.; Furukawa, K.; Umemori, K.; Okuno, H.; Haruna, T.; Hamatsu, R.; Sumiyoshi, T.; Yoshida, K.; Potylitsin, A. P.; Tropin, I. S.; Chehab, R.

Proceedings of the IEEE Particle Accelerator Conference. 2007. p. 2778-2780 4440573.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Suwada, T, Satoh, M, Sugimura, T, Kamitani, T, Furukawa, K, Umemori, K, Okuno, H, Haruna, T, Hamatsu, R, Sumiyoshi, T, Yoshida, K, Potylitsin, AP, Tropin, IS & Chehab, R 2007, Enhancement of the positron intensity by a tungsten single-crystal target at the KEKB injector linac. in Proceedings of the IEEE Particle Accelerator Conference., 4440573, pp. 2778-2780, IEEE Particle Accelerator Conference, PAC07, Albuquerque, NM, United States, 25.6.07. https://doi.org/10.1109/PAC.2007.4440573
Suwada T, Satoh M, Sugimura T, Kamitani T, Furukawa K, Umemori K et al. Enhancement of the positron intensity by a tungsten single-crystal target at the KEKB injector linac. In Proceedings of the IEEE Particle Accelerator Conference. 2007. p. 2778-2780. 4440573 https://doi.org/10.1109/PAC.2007.4440573
Suwada, T. ; Satoh, M. ; Sugimura, T. ; Kamitani, T. ; Furukawa, K. ; Umemori, K. ; Okuno, H. ; Haruna, T. ; Hamatsu, R. ; Sumiyoshi, T. ; Yoshida, K. ; Potylitsin, A. P. ; Tropin, I. S. ; Chehab, R. / Enhancement of the positron intensity by a tungsten single-crystal target at the KEKB injector linac. Proceedings of the IEEE Particle Accelerator Conference. 2007. pp. 2778-2780
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