TY - JOUR
T1 - Design and construction of a high-energy photon polarimeter
AU - Dugger, Michael
AU - Ritchie, Barry
AU - Sparks, N.
AU - Moriya, K.
AU - Tucker, R. J.
AU - Lee, R. J.
AU - Thorpe, B. N.
AU - Hodges, T.
AU - Barbosa, F. J.
AU - Sandoval, N.
AU - Jones, R. T.
N1 - Publisher Copyright:
© 2017 Elsevier B.V.
PY - 2017/9/21
Y1 - 2017/9/21
N2 - We report on the design and construction of a high-energy photon polarimeter for measuring the degree of polarization of a linearly-polarized photon beam. The photon polarimeter uses the process of pair production on an atomic electron (triplet production). The azimuthal distribution of scattered atomic electrons following triplet production yields information regarding the degree of linear polarization of the incident photon beam. The polarimeter, operated in conjunction with a pair spectrometer, uses a silicon strip detector to measure the recoil electron distribution resulting from triplet photoproduction in a beryllium target foil. The analyzing power ΣA for the device using a 75 μm beryllium converter foil is about 0.2, with a relative systematic uncertainty in ΣA of 1.5%.
AB - We report on the design and construction of a high-energy photon polarimeter for measuring the degree of polarization of a linearly-polarized photon beam. The photon polarimeter uses the process of pair production on an atomic electron (triplet production). The azimuthal distribution of scattered atomic electrons following triplet production yields information regarding the degree of linear polarization of the incident photon beam. The polarimeter, operated in conjunction with a pair spectrometer, uses a silicon strip detector to measure the recoil electron distribution resulting from triplet photoproduction in a beryllium target foil. The analyzing power ΣA for the device using a 75 μm beryllium converter foil is about 0.2, with a relative systematic uncertainty in ΣA of 1.5%.
KW - Beam characteristics
KW - Polarization measurement
KW - Polarized photon beam
KW - Triplet photoproduction
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U2 - 10.1016/j.nima.2017.05.026
DO - 10.1016/j.nima.2017.05.026
M3 - Article
AN - SCOPUS:85021318093
SN - 0168-9002
VL - 867
SP - 115
EP - 127
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
ER -