Radiation Hardness of 30 cm Long CsI(Tl) Crystals
Savino Longo, John Michael Roney
TL;DR
This study evaluates how 30 cm CsI(Tl) scintillation crystals degrade under various gamma radiation doses, analyzing changes in their performance metrics and proposing a model for the observed light output loss.
Contribution
It provides empirical data on radiation effects on long CsI(Tl) crystals and introduces a model explaining the light output plateau based on absorption center concentration.
Findings
Light yield decreases with increasing dose
Performance degradation plateaus at high doses
The model correlates absorption centers with light output loss
Abstract
Measurements of the degradation in performance of 30 cm long CsI(Tl) scintillation crystals exposed to 1 MeV photon doses of 2, 10, 35, 100 and 1000 Gy are presented. The light yield, light yield longitudinal non-uniformity, scintillation decay times, energy resolution and timing resolution of a set of spare crystals from the BABAR and Belle experiments are studied as a function of these doses. In addition, a model that describes the plateau observed in the light output loss as a function of dose in terms of increase in concentrations of absorption centres with irradiation is presented.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.