Skip to Main content Skip to Navigation
Journal articles

Multichannel dosemeter and Al2O3:C optically stimulated luminescence fibre sensors for use in radiation therapy: evaluation with electron beams

Sylvain Magne 1 Laureline Auger 1 Jean-Marc Bordy 2 Loïc de Carlan 2 A. Isambert 3 A. Bridier 3 Pierre Ferdinand 1 Jean Barthe 2
1 LCFO - Laboratoire Capteurs Fibres Optiques
DM2I - Département Métrologie Instrumentation & Information : DRT/LIST/DM2I
2 LNHB - Laboratoire National Henri Becquerel
DM2I - Département Métrologie Instrumentation & Information : DRT/LIST/DM2I
Abstract : This article proposes an innovative multichannel optically stimulated luminescence (OSL) dosemeter for on-line in vivo dose verification in radiation therapy. OSL fibre sensors incorporating small Al2 O3 :C fibre crystals (TLD500 ) have been tested with an X-ray generator. A reproducible readout procedure should reduce the fading-induced uncertainty (~ 1% per decade). OSL readouts are temperature-dependent [~0.3% K^-1 when OSL stimulation is performed at the same temperature as irradiation; ~ 0.16% K^-1 after thermalisation (20°C)]. Sensor calibration and depth–dose measurements with electron beams have been performed with a Saturne 43 linear accelerator in reference conditions at CEA-LNHB (ionising radiation reference laboratory in France). Predosed OSL sensors show a good repeatability in multichannel operation and independence versus electron energy in the range (9, 18 MeV). The difference between absorbed doses measured by OSL and an ionisation chamber were within pm 0.9% (for a dose of about 1 Gy) despite a sublinear calibration curve.
Complete list of metadatas

Cited literature [17 references]  Display  Hide  Download

https://hal-cea.archives-ouvertes.fr/cea-01840716
Contributor : Sylvain Magne <>
Submitted on : Monday, July 16, 2018 - 3:54:37 PM
Last modification on : Tuesday, October 20, 2020 - 11:33:43 AM
Long-term archiving on: : Wednesday, October 17, 2018 - 3:43:36 PM

File

AM2008 - Radiat Prot Dosim 131...
Publisher files allowed on an open archive

Identifiers

Collections

CEA | FNCLCC | IGR | DRT | LIST | DM2I

Citation

Sylvain Magne, Laureline Auger, Jean-Marc Bordy, Loïc de Carlan, A. Isambert, et al.. Multichannel dosemeter and Al2O3:C optically stimulated luminescence fibre sensors for use in radiation therapy: evaluation with electron beams. Radiation Protection Dosimetry, Oxford University Press (OUP), 2008, 131 (1), pp.93 - 99. ⟨10.1093/rpd/ncn226⟩. ⟨cea-01840716⟩

Share

Metrics

Record views

141

Files downloads

266