First ClearMind gamma detector prototype for TOF-PET imaging
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arXiv
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| Autori principali: | , , , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2023
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| _version_ | 1866914849582219264 |
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| author | Galindo-Tellez, A. Sharyy, V. Sung, C. -H. Follin, M. Cappellugola, L. Curtoni, S. Dupont, M. Morel, C. Breton, D. Maalmi, J. Yvon, D. |
| author_facet | Galindo-Tellez, A. Sharyy, V. Sung, C. -H. Follin, M. Cappellugola, L. Curtoni, S. Dupont, M. Morel, C. Breton, D. Maalmi, J. Yvon, D. |
| contents | The ClearMind project aims to develop a TOF-PET position-sensitive detection module optimized for time and spatial resolutions and detection efficiency. For this, we use a 59 mm $\times$ 59 mm $\times$ 5 mm monolithic PbWO$_4$ (PWO) crystal, which is encapsulated within a commercial Micro-Channel Plate Photomultiplier tube MAPMT253 with a bialkali photocathode directly deposited on the crystal. We report the proof of concept of the directly deposited of a bialkali photocathode on a PWO crystal and its stability over time. The full calibration of the ClearMind photodetector module in the single-photoelectron regime is described. We measured a time resolution of 70 ps FWHM using a 20 ps pulsed laser. We present the performance of the prototype used in coincidence with a 3 $\times$ 3 $\times$ 3 mm$^3$ LYSO:Ca,Ce crystal readout by a SiPM. We obtained a coincidence time resolution of 350 ps FWHM, a spatial resolution of 4 to 5 mm, and a detection efficiency of 28 %, consistent with Monte Carlo simulations of the ClearMind detector module. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2312_13169 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | First ClearMind gamma detector prototype for TOF-PET imaging Galindo-Tellez, A. Sharyy, V. Sung, C. -H. Follin, M. Cappellugola, L. Curtoni, S. Dupont, M. Morel, C. Breton, D. Maalmi, J. Yvon, D. Instrumentation and Detectors Medical Physics The ClearMind project aims to develop a TOF-PET position-sensitive detection module optimized for time and spatial resolutions and detection efficiency. For this, we use a 59 mm $\times$ 59 mm $\times$ 5 mm monolithic PbWO$_4$ (PWO) crystal, which is encapsulated within a commercial Micro-Channel Plate Photomultiplier tube MAPMT253 with a bialkali photocathode directly deposited on the crystal. We report the proof of concept of the directly deposited of a bialkali photocathode on a PWO crystal and its stability over time. The full calibration of the ClearMind photodetector module in the single-photoelectron regime is described. We measured a time resolution of 70 ps FWHM using a 20 ps pulsed laser. We present the performance of the prototype used in coincidence with a 3 $\times$ 3 $\times$ 3 mm$^3$ LYSO:Ca,Ce crystal readout by a SiPM. We obtained a coincidence time resolution of 350 ps FWHM, a spatial resolution of 4 to 5 mm, and a detection efficiency of 28 %, consistent with Monte Carlo simulations of the ClearMind detector module. |
| title | First ClearMind gamma detector prototype for TOF-PET imaging |
| topic | Instrumentation and Detectors Medical Physics |
| url | https://arxiv.org/abs/2312.13169 |