Citation

Abdul Rashid, Hairul Azhar and Hassan Tarif, Md. Zubair and Bradley, D. A. and M. Zin, Hafiz and Ung, Ngie Min and Oresegun, Adebiyi and Louay, G. T. (2020) Time-resolved dose measurements of linear accelerator pulses using a fibre optic sensor: Applications and challenges. Radiation Physics and Chemistry, 167. pp. 1-5. ISSN 0969-806X

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Abstract

We present time-resolved radioluminescence (RL) measurements from P-doped silica optical fibre, demonstrating potential utility in pulsed source dosimetry. When subjected to 140 MU/min from a 6 MV photon linac source, a 220 µm-core fibre has produced a RL response of 720 ± 20 photon counts/pulse from a saw-tooth ~ 40 µs duration return-to-baseline waveform. Conversely, the Cerenkov stem signal within the radiation insensitive carrier fibre is observed to offer an amplitude amounting to a little less than 3% of that of the P-doped fibre, the sharply spiked response being of ~ 2 µs duration. On the basis of these results, the practical applications and the challenges in the establishment of an effective dosimetry system are discussed.

Item Type:	Article
Uncontrolled Keywords:	Fibre optics, Radioluminescence, Dosimetry, Time-resolved, Pulse, Linac
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA1501-1820 Applied optics. Photonics
Divisions:	Faculty of Engineering (FOE)
Depositing User:	Ms Suzilawati Abu Samah
Date Deposited:	15 Dec 2020 14:57
Last Modified:	15 Dec 2020 14:57
URII:	http://shdl.mmu.edu.my/id/eprint/7858

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