Effects of the positions of scintillation detectors with fast scintillators and photomultiplier tubes on TOF–PET performance

Ermis, Elif Ebru; Celiktas, C.

doi:10.1007/s12043-019-1895-z

Cited by 4 publications

(4 citation statements)

References 19 publications

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“…The samples were coupled to the Hamamatsu-R1828-01 PMT using BC-630 silicone grease. Aluminium foil was used for reflectivity and light shield [24,25]. A homemade B-type voltage divider with anode and dynode output was used.…”

Section: Methodsmentioning

confidence: 99%

The effect of PPO concentration on the scintillation properties of a polystyrene based plastic scintillator

Younesi,

Salehi-Barough,

Ahmadi

et al. 2024

J. Inst.

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Plastic scintillator detectors are widely used in industry, medicine, nuclear research, and fundamental particle research. Numerous studies worldwide aim to gain better insight into and optimize this detector. In this study, polystyrene-based plastic scintillators were fabricated through thermal polymerization without initiator and with different wt% of PPO (2, 5, 10, 15, and 30 wt%) to examine the effect of PPO on scintillation properties and pulse shape discrimination. The features of these scintillators were compared and investigated. The results showed an optimal light yield at 15 wt% PPO. However, the neutron-gamma discrimination was directly related to the PPO concentration, so that for 30 wt% PPO, FOM and peak-to-valley ratio were 1.57 and 4.6 respectively. The aging test of plastic scintillators has shown an inverse relationship between the concentration of PPO and their lifespan.

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Section: Methodsmentioning

confidence: 99%

The effect of PPO concentration on the scintillation properties of a polystyrene based plastic scintillator

Younesi,

Salehi-Barough,

Ahmadi

et al. 2024

J. Inst.

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“…Usually crystals or plastics are used in scintillation detectors, depending on the particles to be detected, it is chosen which one to use. Recently, with the aim to improve the time and spatial resolution, the coupling between SiPM and scintillator material has been widely investigated [9,12]. The plastic scintillators have been more frequently used due to their ease of fabrication in different geometries.…”

Section: Introductionmentioning

confidence: 99%

Intrinsic time resolution and efficiency study for simulated scintillators plastics with Geant4

et al. 2023

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The time resolution (TR) is one of the most important characteristic of a detector. The particular case of a scintillator, the collection of light also is important, it depends of the sensitive area of the photo-sensor (Scorer). Normally, the Scorer of Photomultipliers Tubes (PMTs) is greater than the Scorer of Silicon Photomultipliers (SiPMs). Other differences are the voltage of operation, their size and cost, in some cases, the large size of PMTs can be difficult to place, if small space is required, in which case, it is preferable to use SiPMs. The value of TR also depends of the size and geometry of thescintillator, number of photo-sensors and the electronic part.In this work, we study the mean optical photon arrival time distribution (AT) to a Scorer from a SiPM of 6X6 mm2. We define the variation of AT as the intrinsic time resolution (ITR). In Geant4, we simulated two different geometries: square and hexagonal, for a BC-404 plastic scintillator coupled to one Scorer. The sources simulated were Sr90, Co60, Cs137, Na22 and μ- of 1 GeV. It is shown that AT and ITR depends of the geometry and size of the plastic scintillator, the location of the Scorer, the incident particle and its energy. Then, the ITR and therefore the TR is not a constant for a detector. Finally, we show the relation between AT and the deposited energy by the particle incident, which are related in the experiment to the response time event of the detector and the deposited charge by the incident particle, respectively.

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“…Silicon Photo Multipliers (SiPM) have been widely used during the past two decades in different areas like high energy physics [1,2], and its medical applications. A clear example is the development of Positron Emission Tomography (PET) [3] where the typical Photo Multiplier Tube (PMT) is being replaced by the SiPM technology with the aim to improve its time and spatial resolutions [4][5][6][7]. Since 2013 SensL corporation has developed SiPMs with two signal outputs: standard and fast [8].…”

Section: Introductionmentioning

confidence: 99%

Electric charge estimation using a SensL SiPM

Zepeda-Fernández¹,

Rebolledo-Herrera

Rodrı́guez-Cahuantzi³

et al. 2020

J. Inst.

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The Silicon Photomultipliers (SiPMs) are commonly used in the construction of radiation detectors such as those used in high energy experiments and its applications where an excellent time resolution is required for triggering. In most of this cases, the trigger systems electric charge information is discarded due to limitations in data acquisition. In this work we propose a method, using a simple radiation detector based on an organic plastic scintillator 2×2×0.3 cm3 size, to estimate the electric charge obtained from the acquisition of the fast output signal of a SensL SiPM model C-60035-4P-EVB. Our results suggest a linear relation between the reconstructed electric charge from the fast output of the SiPM used with respect to the one reconstructed with its standard signal output. Using our electric charge reconstruction method, we compared the sensitivity of two plastic scintillators, BC404 and BC422Q, under the presence of 90Sr, 137Cs, 60Co and 22Na radiation sources.

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Effects of the positions of scintillation detectors with fast scintillators and photomultiplier tubes on TOF–PET performance

Cited by 4 publications

References 19 publications

The effect of PPO concentration on the scintillation properties of a polystyrene based plastic scintillator

The effect of PPO concentration on the scintillation properties of a polystyrene based plastic scintillator

Intrinsic time resolution and efficiency study for simulated scintillators plastics with Geant4

Electric charge estimation using a SensL SiPM

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