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CsI(Tl) yield monitor for quasi-monochromatic photons from Compton backscattering of laser light at ETL

Conference · · IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States)
OSTI ID:5924577
A CsI(Tl) yield monitor has been constructed for the detection of quasi-monochromatic photons generated by Compton backscattering of laser light at the Electrotechnical laboratory (ETL). The monitor has dimensions of 150 x 150 x 300 mm[sup 3], consisting of 9-CsI(Tl) crystals. The fundamental performances of the CsI(Tl) monitor were measured with Radio Isotope (RI) sources and a quasimonochromatic photon beam. The detection efficiency was measured, and 100% efficiency was achieved for 20 MeV quasi-monochromatic photons. This monitor was also used as a photon spectrometer. The overall energy resolution was 3% for 3.2 MeV and 7% for 20 MeV quasi-monochromatic photons. Precise measurements of the LCS photon yield were done with the CsI(Tl) monitor. The authors confirmed that the photon yield was correctly expressed by the theoretical calculation.
OSTI ID:
5924577
Report Number(s):
CONF-921005--
Conference Information:
Journal Name: IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States) Journal Volume: 40:4 part 1
Country of Publication:
United States
Language:
English