Experimental study of positron production from a W single crystal by the KEK 8-GeV electron linac beam

H. Okuno, S. Anami, A. Enomoto, K. Furukawa, K. Kakihara, T. Kamitani, Y. Ogawa, A. Ohsawa, T. Oogoe, T. Suwada, R. Hamatsu, K. Sasahara, T. Fujita, K. Umemori, K. Yoshida, V. Ababiy, A. P. Potylitsin, I. E. Vnukov

Результат исследований: Материалы для журнала

12 Цитирования (Scopus)

Выдержка

We have measured the positron production efficiency from tungsten single-crystal targets using an 8 GeV electron beam. A single-bunch beam with a bunch width of 10 ps, a repetition rate of 2 Hz, and an intensity of 0.2 nC/bunch was incident on a target mounted on a precision goniometer. Positrons produced in the forward direction were detected by a magnetic spectrometer in the 10-20 MeV/c momentum range. Systematic data on the target-thickness dependence and the momentum distribution of the produced positrons were obtained for crystal targets. The results show that, when the crystal axis 〈111〉 is aligned to the electron beam direction, the positron yield increases compared to the amorphous case by factors of 6.5, 3.4 and 2.3 at 10 MeV/c for 2.2, 5.3 and 9.0 mm thick crystals, respectively. We observed that the positron yield from the 9.0 mm thick crystal is larger than the maximum yield attainable with 18-20 mm thick amorphous targets at 8 GeV.

Язык оригиналаАнглийский
Страницы (с-по)259-265
Число страниц7
ЖурналNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Том201
Номер выпуска1
DOI
СостояниеОпубликовано - 1 янв 2003
СобытиеRREPS 2001 - Lake Aya, Российская Федерация
Продолжительность: 1 сен 20011 сен 2001

Отпечаток

Positrons
Electron beams
positrons
Single crystals
electron beams
single crystals
Crystals
crystals
Momentum
momentum
Goniometers
target thickness
goniometers
Tungsten
Spectrometers
repetition
tungsten
spectrometers

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

Цитировать

Experimental study of positron production from a W single crystal by the KEK 8-GeV electron linac beam. / Okuno, H.; Anami, S.; Enomoto, A.; Furukawa, K.; Kakihara, K.; Kamitani, T.; Ogawa, Y.; Ohsawa, A.; Oogoe, T.; Suwada, T.; Hamatsu, R.; Sasahara, K.; Fujita, T.; Umemori, K.; Yoshida, K.; Ababiy, V.; Potylitsin, A. P.; Vnukov, I. E.

В: Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, Том 201, № 1, 01.01.2003, стр. 259-265.

Результат исследований: Материалы для журнала

Okuno, H, Anami, S, Enomoto, A, Furukawa, K, Kakihara, K, Kamitani, T, Ogawa, Y, Ohsawa, A, Oogoe, T, Suwada, T, Hamatsu, R, Sasahara, K, Fujita, T, Umemori, K, Yoshida, K, Ababiy, V, Potylitsin, AP & Vnukov, IE 2003, 'Experimental study of positron production from a W single crystal by the KEK 8-GeV electron linac beam', Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, том. 201, № 1, стр. 259-265. https://doi.org/10.1016/S0168-583X(02)01138-2
Okuno, H. ; Anami, S. ; Enomoto, A. ; Furukawa, K. ; Kakihara, K. ; Kamitani, T. ; Ogawa, Y. ; Ohsawa, A. ; Oogoe, T. ; Suwada, T. ; Hamatsu, R. ; Sasahara, K. ; Fujita, T. ; Umemori, K. ; Yoshida, K. ; Ababiy, V. ; Potylitsin, A. P. ; Vnukov, I. E. / Experimental study of positron production from a W single crystal by the KEK 8-GeV electron linac beam. В: Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms. 2003 ; Том 201, № 1. стр. 259-265.
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abstract = "We have measured the positron production efficiency from tungsten single-crystal targets using an 8 GeV electron beam. A single-bunch beam with a bunch width of 10 ps, a repetition rate of 2 Hz, and an intensity of 0.2 nC/bunch was incident on a target mounted on a precision goniometer. Positrons produced in the forward direction were detected by a magnetic spectrometer in the 10-20 MeV/c momentum range. Systematic data on the target-thickness dependence and the momentum distribution of the produced positrons were obtained for crystal targets. The results show that, when the crystal axis 〈111〉 is aligned to the electron beam direction, the positron yield increases compared to the amorphous case by factors of 6.5, 3.4 and 2.3 at 10 MeV/c for 2.2, 5.3 and 9.0 mm thick crystals, respectively. We observed that the positron yield from the 9.0 mm thick crystal is larger than the maximum yield attainable with 18-20 mm thick amorphous targets at 8 GeV.",
keywords = "Channeling radiation, Coherent bremsstrahlung, Electron linear accelerator, Positron source, Tungsten crystal",
author = "H. Okuno and S. Anami and A. Enomoto and K. Furukawa and K. Kakihara and T. Kamitani and Y. Ogawa and A. Ohsawa and T. Oogoe and T. Suwada and R. Hamatsu and K. Sasahara and T. Fujita and K. Umemori and K. Yoshida and V. Ababiy and Potylitsin, {A. P.} and Vnukov, {I. E.}",
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TY - JOUR

T1 - Experimental study of positron production from a W single crystal by the KEK 8-GeV electron linac beam

AU - Okuno, H.

AU - Anami, S.

AU - Enomoto, A.

AU - Furukawa, K.

AU - Kakihara, K.

AU - Kamitani, T.

AU - Ogawa, Y.

AU - Ohsawa, A.

AU - Oogoe, T.

AU - Suwada, T.

AU - Hamatsu, R.

AU - Sasahara, K.

AU - Fujita, T.

AU - Umemori, K.

AU - Yoshida, K.

AU - Ababiy, V.

AU - Potylitsin, A. P.

AU - Vnukov, I. E.

PY - 2003/1/1

Y1 - 2003/1/1

N2 - We have measured the positron production efficiency from tungsten single-crystal targets using an 8 GeV electron beam. A single-bunch beam with a bunch width of 10 ps, a repetition rate of 2 Hz, and an intensity of 0.2 nC/bunch was incident on a target mounted on a precision goniometer. Positrons produced in the forward direction were detected by a magnetic spectrometer in the 10-20 MeV/c momentum range. Systematic data on the target-thickness dependence and the momentum distribution of the produced positrons were obtained for crystal targets. The results show that, when the crystal axis 〈111〉 is aligned to the electron beam direction, the positron yield increases compared to the amorphous case by factors of 6.5, 3.4 and 2.3 at 10 MeV/c for 2.2, 5.3 and 9.0 mm thick crystals, respectively. We observed that the positron yield from the 9.0 mm thick crystal is larger than the maximum yield attainable with 18-20 mm thick amorphous targets at 8 GeV.

AB - We have measured the positron production efficiency from tungsten single-crystal targets using an 8 GeV electron beam. A single-bunch beam with a bunch width of 10 ps, a repetition rate of 2 Hz, and an intensity of 0.2 nC/bunch was incident on a target mounted on a precision goniometer. Positrons produced in the forward direction were detected by a magnetic spectrometer in the 10-20 MeV/c momentum range. Systematic data on the target-thickness dependence and the momentum distribution of the produced positrons were obtained for crystal targets. The results show that, when the crystal axis 〈111〉 is aligned to the electron beam direction, the positron yield increases compared to the amorphous case by factors of 6.5, 3.4 and 2.3 at 10 MeV/c for 2.2, 5.3 and 9.0 mm thick crystals, respectively. We observed that the positron yield from the 9.0 mm thick crystal is larger than the maximum yield attainable with 18-20 mm thick amorphous targets at 8 GeV.

KW - Channeling radiation

KW - Coherent bremsstrahlung

KW - Electron linear accelerator

KW - Positron source

KW - Tungsten crystal

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U2 - 10.1016/S0168-583X(02)01138-2

DO - 10.1016/S0168-583X(02)01138-2

M3 - Conference article

AN - SCOPUS:0037265935

VL - 201

SP - 259

EP - 265

JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

SN - 0168-583X

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