Abstract
In the present experiment the photon beam collimator was removed from the tagging spectrometer, so the fraction of the tagged-photon flux that was incident on the face of the target (circular, diameter = 70 mm) and the face of the Cherenkov detector (square, side length = 100 mm) is different, so that a correction for the different boundary conditions of the target and Cherenkov detectors is required. The report provides a prescription for evaluating the tagging efficiency of the uncollimated and off-axis photon beam, allowing tagging efficiences of {approx} 75% to be determined with an accuracy of about 1%. For a collimated beam, the tagging efficiency is usually about 50%. The present analysis is not sensitive to inaccuracies in the magnitude of the theoretical expression for the bremsstrahlung cross sections. 6 refs., 5 figs.
Eden, J A;
O`Keefe, G J;
Rassool, R P;
[1]
Suda, T;
Nomura, I;
Yokokawa, J
[2]
- Melbourne Univ., Parkville (Australia). School of Physics
- Tohoku Univ., Sendai (Japan). Lab. of Nuclear Science; and others
Citation Formats
Eden, J A, O`Keefe, G J, Rassool, R P, Suda, T, Nomura, I, and Yokokawa, J.
Tagging efficiency for an uncollimated photon beam.
Australia: N. p.,
1991.
Web.
Eden, J A, O`Keefe, G J, Rassool, R P, Suda, T, Nomura, I, & Yokokawa, J.
Tagging efficiency for an uncollimated photon beam.
Australia.
Eden, J A, O`Keefe, G J, Rassool, R P, Suda, T, Nomura, I, and Yokokawa, J.
1991.
"Tagging efficiency for an uncollimated photon beam."
Australia.
@misc{etde_10115340,
title = {Tagging efficiency for an uncollimated photon beam}
author = {Eden, J A, O`Keefe, G J, Rassool, R P, Suda, T, Nomura, I, and Yokokawa, J}
abstractNote = {In the present experiment the photon beam collimator was removed from the tagging spectrometer, so the fraction of the tagged-photon flux that was incident on the face of the target (circular, diameter = 70 mm) and the face of the Cherenkov detector (square, side length = 100 mm) is different, so that a correction for the different boundary conditions of the target and Cherenkov detectors is required. The report provides a prescription for evaluating the tagging efficiency of the uncollimated and off-axis photon beam, allowing tagging efficiences of {approx} 75% to be determined with an accuracy of about 1%. For a collimated beam, the tagging efficiency is usually about 50%. The present analysis is not sensitive to inaccuracies in the magnitude of the theoretical expression for the bremsstrahlung cross sections. 6 refs., 5 figs.}
place = {Australia}
year = {1991}
month = {Dec}
}
title = {Tagging efficiency for an uncollimated photon beam}
author = {Eden, J A, O`Keefe, G J, Rassool, R P, Suda, T, Nomura, I, and Yokokawa, J}
abstractNote = {In the present experiment the photon beam collimator was removed from the tagging spectrometer, so the fraction of the tagged-photon flux that was incident on the face of the target (circular, diameter = 70 mm) and the face of the Cherenkov detector (square, side length = 100 mm) is different, so that a correction for the different boundary conditions of the target and Cherenkov detectors is required. The report provides a prescription for evaluating the tagging efficiency of the uncollimated and off-axis photon beam, allowing tagging efficiences of {approx} 75% to be determined with an accuracy of about 1%. For a collimated beam, the tagging efficiency is usually about 50%. The present analysis is not sensitive to inaccuracies in the magnitude of the theoretical expression for the bremsstrahlung cross sections. 6 refs., 5 figs.}
place = {Australia}
year = {1991}
month = {Dec}
}