A polarized photon beam produced by coherent pair production in oriented graphite

R. L. Eisele; D. J. Sherden; R. H. Siemann; C. K. Sinclair; D. J. Quinn; J. P. Rutherfoord; M. A. Shupe

doi:10.1016/0029-554X(73)90743-X

A polarized photon beam produced by coherent pair production in oriented graphite

R. L. Eisele, D. J. Sherden, R. H. Siemann, C. K. Sinclair, D. J. Quinn, J. P. Rutherfoord, M. A. Shupe

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

Attenuation by coherent pair production in higly oriented, compression annealed, pyrolytic graphite has been used to polarize a 16-GeV bremsstrahlung beam. The polarizer consists of 61 cm of graphite crystals, whose reciprocal lattice vectors are oriented at 10.5 mrad to the normal to the beam direction, and can be rotated by 90° about the beam line to rotate the plane of polarization. A functionally identical assembly of length 30.5 cm was used as an analyzer to measure the polarization of the beam with the SLAC pair spectrometer. The beam produced intensities greater than 4 × 10⁸ equivalent quanta per beam pulse and had a measured polarization of 0.255±0.020.

Original language	English (US)
Pages (from-to)	489-507
Number of pages	19
Journal	Nuclear Instruments and Methods
Volume	113
Issue number	4
DOIs	https://doi.org/10.1016/0029-554X(73)90743-X
State	Published - Dec 15 1973
Externally published	Yes

ASJC Scopus subject areas

General Medicine

Access to Document

10.1016/0029-554X(73)90743-X

Cite this

@article{07914133a0644b40bffba7bd8fac1249,

title = "A polarized photon beam produced by coherent pair production in oriented graphite",

abstract = "Attenuation by coherent pair production in higly oriented, compression annealed, pyrolytic graphite has been used to polarize a 16-GeV bremsstrahlung beam. The polarizer consists of 61 cm of graphite crystals, whose reciprocal lattice vectors are oriented at 10.5 mrad to the normal to the beam direction, and can be rotated by 90° about the beam line to rotate the plane of polarization. A functionally identical assembly of length 30.5 cm was used as an analyzer to measure the polarization of the beam with the SLAC pair spectrometer. The beam produced intensities greater than 4 × 108 equivalent quanta per beam pulse and had a measured polarization of 0.255±0.020.",

author = "Eisele, {R. L.} and Sherden, {D. J.} and Siemann, {R. H.} and Sinclair, {C. K.} and Quinn, {D. J.} and Rutherfoord, {J. P.} and Shupe, {M. A.}",

note = "Funding Information: * Work supported by the U.S. Atomic Energy Commission. t Present address: Cornell University, Ithaca, N.Y. 14850, U.S.A.",

year = "1973",

month = dec,

day = "15",

doi = "10.1016/0029-554X(73)90743-X",

language = "English (US)",

volume = "113",

pages = "489--507",

journal = "Nuclear Instruments and Methods",

issn = "0029-554X",

publisher = "Elsevier B.V.",

number = "4",

}

TY - JOUR

T1 - A polarized photon beam produced by coherent pair production in oriented graphite

AU - Eisele, R. L.

AU - Sherden, D. J.

AU - Siemann, R. H.

AU - Sinclair, C. K.

AU - Quinn, D. J.

AU - Rutherfoord, J. P.

AU - Shupe, M. A.

N1 - Funding Information: * Work supported by the U.S. Atomic Energy Commission. t Present address: Cornell University, Ithaca, N.Y. 14850, U.S.A.

PY - 1973/12/15

Y1 - 1973/12/15

N2 - Attenuation by coherent pair production in higly oriented, compression annealed, pyrolytic graphite has been used to polarize a 16-GeV bremsstrahlung beam. The polarizer consists of 61 cm of graphite crystals, whose reciprocal lattice vectors are oriented at 10.5 mrad to the normal to the beam direction, and can be rotated by 90° about the beam line to rotate the plane of polarization. A functionally identical assembly of length 30.5 cm was used as an analyzer to measure the polarization of the beam with the SLAC pair spectrometer. The beam produced intensities greater than 4 × 108 equivalent quanta per beam pulse and had a measured polarization of 0.255±0.020.

AB - Attenuation by coherent pair production in higly oriented, compression annealed, pyrolytic graphite has been used to polarize a 16-GeV bremsstrahlung beam. The polarizer consists of 61 cm of graphite crystals, whose reciprocal lattice vectors are oriented at 10.5 mrad to the normal to the beam direction, and can be rotated by 90° about the beam line to rotate the plane of polarization. A functionally identical assembly of length 30.5 cm was used as an analyzer to measure the polarization of the beam with the SLAC pair spectrometer. The beam produced intensities greater than 4 × 108 equivalent quanta per beam pulse and had a measured polarization of 0.255±0.020.

UR - http://www.scopus.com/inward/record.url?scp=42949169852&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=42949169852&partnerID=8YFLogxK

U2 - 10.1016/0029-554X(73)90743-X

DO - 10.1016/0029-554X(73)90743-X

M3 - Article

AN - SCOPUS:42949169852

SN - 0029-554X

VL - 113

SP - 489

EP - 507

JO - Nuclear Instruments and Methods

JF - Nuclear Instruments and Methods

IS - 4

ER -

A polarized photon beam produced by coherent pair production in oriented graphite

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this