Experiment of positron generation using a crystal target at the KEK electron/positron linac

M. Inoue, S. Takenaka, K. Yoshida, I. Endo, M. Iinuma, T. Takahashi, Alexey Victorovich Bogdanov, A. M. Kolchuzkin, A. P. Potylitsin, I. E. Vnukov, H. Okuno, S. Anami, A. Enomoto, K. Furukawa, T. Kamitani, Y. Ogawa, S. Ohsawa

Research output: Contribution to journalArticle

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Abstract

We have performed an experiment of positron generation using a crystal target at an electron/positron linac at KEK. The target consists of a tungsten crystal to emit photons and an amorphous tungsten for pair creation, whose thicknesses are 0.5 and 2.0 radiation length, respectively. When the 〈1 1 1〉 crystal axis is oriented parallel to the 3 GeV incident electron beam, the positron yield is enhanced by 40% compared to values for the disoriented crystal. No effect of injecting intense ultra-short electron bunches on the crystalline structure is observed. The crystal orientation dependence of the positron yield as well as the enhancement factor can be explained by a simulation assuming a coherent bremsstrahlung process of the electron in the crystal.

Original languageEnglish
Pages (from-to)104-111
Number of pages8
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume173
Issue number1
DOIs
Publication statusPublished - 1 Jan 2001

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Positrons
positrons
Crystals
Electrons
crystals
electrons
Experiments
Tungsten
tungsten
Crystal orientation
Electron beams
bremsstrahlung
Photons
Crystalline materials
Radiation
electron beams
augmentation
photons
radiation
simulation

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

Cite this

Experiment of positron generation using a crystal target at the KEK electron/positron linac. / Inoue, M.; Takenaka, S.; Yoshida, K.; Endo, I.; Iinuma, M.; Takahashi, T.; Bogdanov, Alexey Victorovich; Kolchuzkin, A. M.; Potylitsin, A. P.; Vnukov, I. E.; Okuno, H.; Anami, S.; Enomoto, A.; Furukawa, K.; Kamitani, T.; Ogawa, Y.; Ohsawa, S.

In: Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, Vol. 173, No. 1, 01.01.2001, p. 104-111.

Research output: Contribution to journalArticle

Inoue, M, Takenaka, S, Yoshida, K, Endo, I, Iinuma, M, Takahashi, T, Bogdanov, AV, Kolchuzkin, AM, Potylitsin, AP, Vnukov, IE, Okuno, H, Anami, S, Enomoto, A, Furukawa, K, Kamitani, T, Ogawa, Y & Ohsawa, S 2001, 'Experiment of positron generation using a crystal target at the KEK electron/positron linac', Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, vol. 173, no. 1, pp. 104-111. https://doi.org/10.1016/S0168-583X(00)00195-6
Inoue, M. ; Takenaka, S. ; Yoshida, K. ; Endo, I. ; Iinuma, M. ; Takahashi, T. ; Bogdanov, Alexey Victorovich ; Kolchuzkin, A. M. ; Potylitsin, A. P. ; Vnukov, I. E. ; Okuno, H. ; Anami, S. ; Enomoto, A. ; Furukawa, K. ; Kamitani, T. ; Ogawa, Y. ; Ohsawa, S. / Experiment of positron generation using a crystal target at the KEK electron/positron linac. In: Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms. 2001 ; Vol. 173, No. 1. pp. 104-111.
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AU - Takahashi, T.

AU - Bogdanov, Alexey Victorovich

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AU - Anami, S.

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