γ-ray performance of a 1242cm3 LaCl3:Ce scintillation spectrometer

Owens, A.R.; Bos, A.J.J.; Brandenburg, S.; Dathy, C.; Dorenbos, P.; Kraft, Stefan; Ostendorf, Reint; Ouspenski, V.; Quarati, F.

doi:10.1016/j.nima.2007.01.091

Cited by 25 publications

(8 citation statements)

References 5 publications

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“…As UFSDs are able to measure single protons with excellent timing performances, they were not modelled in the simulation. LaBr 3 :Ce have excellent energy resolution (reaching ~4% FWHM at 662 keV [24]), and have been found to be suitable for PGT applications [14,17]. We simulated 110 LaBr 3 :Ce detectors.…”

Section: Monte Carlo Simulationsmentioning

confidence: 99%

Estimating the stopping power distribution during proton therapy: A proof of concept

et al. 2022

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Objective: We introduce a new treatment verification technique to estimate the primary particle’s stopping power from prompt gamma timing measurements in proton therapy.Approach: The starting point is the Spatio-temporal Emission Recostruction technique, which provides the time-depth distribution of the emitted prompt photons with a multiple Prompt-Gamma Timing detector setup based on Lanthanum Bromide crystals. A dedicated formalism based on an analytical approximation of the stopping power is developed to obtain the desired information. Its performance is evaluated in a proof of concept configuration via Monte Carlo simulations of monochromatic proton beams impinging on a homogeneous PMMA phantom.Main Results: Results indicate stopping power estimations as good as 3.8% with respect to NIST values, and range estimations within 0.3 cm (standard deviation), when considering 250 ps FWHM timing resolution.Significance: The current study shows, for the first time, the feasibility of evaluating the stopping power of primary beams with a technique that can be performed in-vivo, opening up new possibilities in the field of treatment verification and therapy optimization.

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Section: Monte Carlo Simulationsmentioning

confidence: 99%

Estimating the stopping power distribution during proton therapy: A proof of concept

et al. 2022

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“…Accordingly, it seems that no experimental data have been used to evaluate any of these three isotopes. Since the 1970s significant advances have occurred in detector development, especially with the release of new lanthanide-halide scintillation detectors [9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24], as well as new data acquisition and signal-processing techniques [25,26]. Consequently, we wanted to take advantage of these advancements toward high-quality measurements of the γ -decay heat from the fission process.…”

Section: Introductionmentioning

confidence: 99%

New prompt spectralγ-ray data from the reaction252Cf(sf) and its implication on present evaluated nuclear data files

et al. 2013

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We present results from new spectral prompt γ-ray measurements from the spontaneous fission of 252 Cf. Apart from one recent experiment, about four decades have passed since the last dedicated experiments were reported in the literature. Hence, there was a need for a revision. We have measured prompt fission γ rays with both cerium-doped LaBr 3 and CeBr 3 scintillation detectors, both of which exhibit excellent timing and good energy resolution. The emission yield was determined to be ν γ = (8.30 ± 0.08)/fission and ν γ = (8.31 ± 0.10)/fission, with the average energy of γ = (0.80 ± 0.01) MeV and γ = (0.80 ± 0.01) MeV and total energy of E γ,tot = (6.64 ± 0.08) MeV and E γ,tot = (6.65 ± 0.12) MeV, with the LaBr 3 and CeBr 3 detectors, respectively. Since the results from the two detectors are in excellent agreement and confirm the historical data, but not those in the present evaluated nuclear data files, we strongly recommend an update.

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“…Lanthanum-based crystals have been shown to exhibit intrinsic radioactive background from naturally occurring 138 La and from alpha decays from 227 Ac contamination [8][9][10]. Ac is a chemical homologue of La -therefore, they are difficult to separate.…”

Section: Characterization Of the Labr 3 :Ce Detectorsmentioning

confidence: 99%

The MERLINO project:characterization of LaBr₃:Ce detectors for stopping power monitoring in proton therapy

et al. 2022

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The MERLINO project is developing a multi-detector setup with the goal of evaluating the beam stopping power from Prompt-Gamma-Timing measurements in proton therapy. The detectors are based on the cerium-doped lanthanum bromide crystal, LaBr3:Ce, coupled to photo-multiplier tubes. The system characterization is ongoing and the first calibration measurements with two detectors showed 124 ps σ and σ E/E = 3% for the timing and energy resolution, respectively. The measured experimental parameters were then used to carry out a preliminary estimation of the stopping power. Results from the simulation of a 189 MeV proton beam impinging on an homogeneous phantom are presented for the optimisation of the MERLINO detector setup.

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γ-ray performance of a 1242cm3 LaCl3:Ce scintillation spectrometer

Cited by 25 publications

References 5 publications

Estimating the stopping power distribution during proton therapy: A proof of concept

Estimating the stopping power distribution during proton therapy: A proof of concept

New prompt spectralγ-ray data from the reaction252Cf(sf) and its implication on present evaluated nuclear data files

The MERLINO project:characterization of LaBr₃:Ce detectors for stopping power monitoring in proton therapy

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γ-ray performance of a 1242cm3 LaCl3:Ce scintillation spectrometer

Cited by 25 publications

References 5 publications

Estimating the stopping power distribution during proton therapy: A proof of concept

Estimating the stopping power distribution during proton therapy: A proof of concept

New prompt spectralγ-ray data from the reaction252Cf(sf) and its implication on present evaluated nuclear data files

The MERLINO project:characterization of LaBr3:Ce detectors for stopping power monitoring in proton therapy

Contact Info

Product

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The MERLINO project:characterization of LaBr₃:Ce detectors for stopping power monitoring in proton therapy