Status of timing with plastic scintillation detectors

Moszyński, M.; Bengtson, B.

doi:10.1016/s0029-554x(79)90170-8

Cited by 130 publications

(54 citation statements)

References 94 publications

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“…4). The decay constant at initial fluence τ 0 is 2.5 ns, which is in agreement with literature data for bulk BC-400 [15]. It decreases by about 20 % to reach 2 ns at the final fluence (Fig.…”

Section: Methodssupporting

confidence: 91%

SPORT: A new sub-nanosecond time-resolved instrument to study swift heavy ion-beam induced luminescence – Application to luminescence degradation of a fast plastic scintillator

Gardès¹,

Balanzat²,

Ban-d’Etat³

et al. 2013

Nuclear Instruments and Methods in Physics Research Section B:

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We developed a new sub-nanosecond time-resolved instrument to study the dynamics of UVvisible luminescence under high stopping power heavy ion irradiation. We applied our instrument, called SPORT, on a fast plastic scintillator (BC-400) irradiated with 27-MeV Ar ions having high mean electronic stopping power of 2.6 MeV/µm. As a consequence of increasing permanent radiation damages with increasing ion fluence, our investigations reveal a degradation of scintillation intensity together with, thanks to the time-resolved measurement, a decrease in the decay constant of the scintillator. This combination indicates that luminescence degradation processes by both dynamic and static quenching, the latter mechanism being predominant. Under such high density excitation, the scintillation deterioration of BC-400 is significantly enhanced compared to that observed in previous investigations, mainly performed using light ions. The observed non-linear behaviour implies that the dose at which luminescence starts deteriorating is not independent on particles' stopping power, thus illustrating that the radiation hardness of plastic scintillators can be strongly weakened under high excitation density in heavy ion environments.

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Section: Methodssupporting

confidence: 91%

SPORT: A new sub-nanosecond time-resolved instrument to study swift heavy ion-beam induced luminescence – Application to luminescence degradation of a fast plastic scintillator

Gardès¹,

Balanzat²,

Ban-d’Etat³

et al. 2013

Nuclear Instruments and Methods in Physics Research Section B:

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show abstract

“…BC-420 (Saint Gobain Crystals) and its equivalent EJ-230 (Eljen Technology) used in the J-PET detector, the distribution of the time of the photon emission followed by the interaction of the gamma quantum at time Θ can be well approximated by the following convolution of gaussian and exponential terms (Moszynski Bengtson 19771979:…”

Section: Emission Time Distributionsmentioning

confidence: 99%

Time resolution of the plastic scintillator strips with matrix photomultiplier readout for J-PET tomograph

et al. 2016

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Abstract. Recent tests of a single module of the Jagiellonian Positron Emission Tomography system (J-PET) consisting of 30 cm long plastic scintillator strips have proven its applicability for the detection of annihilation quanta (0.511 MeV) with a coincidence resolving time (CRT) of 0.266 ns. The achieved resolution is almost by a factor of two better with respect to the current TOF-PET detectors and it can still be improved since, as it is shown in this article, the intrinsic limit of time resolution for the determination of time of the interaction of 0.511 MeV gamma quanta in plastic scintillators is much lower. As the major point of the article, a method allowing to record timestamps of several photons, at two ends of the scintillator strip, by means of matrix of silicon photomultipliers (SiPM) is introduced. As a result of simulations, conducted with the number of SiPM varying from 4 to 42, it is shown that the improvement of timing resolution saturates with the growing number of photomultipliers, and that the 2 x 5 configuration at two ends allowing to read twenty timestamps, constitutes an optimal solution. The conducted simulations accounted for the emission time distribution, photon transport and absorption inside the scintillator, as well as quantum efficiency and transit time spread of photosensors, and were checked based on the experimental results. Application of the 2 x 5 matrix of SiPM allows for achieving the coincidence resolving time in positron emission tomography of ≈ 0.170 ns for 15 cm axial field-of-view (AFOV) and ≈ 0.365 ns for 100 cm AFOV. The results open perspectives for construction of a cost-effective TOF-PET scanner with significantly better TOF resolution and larger AFOV with respect to the current

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“…In this work, the time resolution of the LYSO-APD array detectors is measured against a fast PMT detector, so that the variance of this distribution can be written as: (10) where and are the variances introduced by the APD array detector and the PMT detector, respectively. The variance in the time pickoff of each of these detectors consists of contributions related with time variations in the interaction of the radiation with the detectors, variations in the amplitude and shape of the scintillation pulse, time variations induced by its detection and the associated electronics, and the time pickoff method [21]. The first of these contributions is neglected in this analysis in view of the small dimensions of the detectors.…”

Section: Time Resolutionmentioning

confidence: 99%

Signal to Noise Ratio of APD-Based Monolithic Scintillator Detectors for High Resolution PET

Maas

Schaart

Laan

et al. 2008

IEEE Trans. Nucl. Sci.

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Status of timing with plastic scintillation detectors

Cited by 130 publications

References 94 publications

SPORT: A new sub-nanosecond time-resolved instrument to study swift heavy ion-beam induced luminescence – Application to luminescence degradation of a fast plastic scintillator

SPORT: A new sub-nanosecond time-resolved instrument to study swift heavy ion-beam induced luminescence – Application to luminescence degradation of a fast plastic scintillator

Time resolution of the plastic scintillator strips with matrix photomultiplier readout for J-PET tomograph

Signal to Noise Ratio of APD-Based Monolithic Scintillator Detectors for High Resolution PET

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