Scintillation and Timing Performance of a 3at% Yttrium-Doped Barium Fluoride Crystal
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2025
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| author | Huang, Zeyu Zhang, Jing Zou, Shiming Yuan, Mingkuan Xu, Jiawei Wang, Xiyang Xie, Shiqing Chen, Jinhui Chen, Junfeng Wang, Xiaolong |
| author_facet | Huang, Zeyu Zhang, Jing Zou, Shiming Yuan, Mingkuan Xu, Jiawei Wang, Xiyang Xie, Shiqing Chen, Jinhui Chen, Junfeng Wang, Xiaolong |
| contents | We report the scintillation and timing performance of a new developed 200 * 20 mm * 20 mm large size barium fluoride crystal doped with 3at% yttrium (BaF2:Y) to enhance the application for high time resolution. This doping effectively suppresses the slow scintillation component while maintaining most of the fast component, as confirmed by X-ray excited luminescence measurements. The BaF2:Y crystal demonstrated a transmittance of near 90% in the visible spectrum and a light response uniformity parameter of delta = (-2.74 +- 1.15)% when coupled with the tail end. The actual yttrium content varied from 2.1at% near the seed end to 3.7at% at the tail end. The assembled large BaF2:Y detector with silicon photomultipliers exhibited a time resolution of (82.2 +- 2.6) ps using constant fraction discrimination method in a cosmic ray test and (140.1 +- 3.8) ps using a low fixed threshold method in a beam test at Shanghai Synchrotron Radiation Facility with an 1.35 GeV electron beam. These results indicate the significant potential of BaF2:Y crystal for various applications, such as detectors for particle physics and nuclear physics. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2501_09388 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Scintillation and Timing Performance of a 3at% Yttrium-Doped Barium Fluoride Crystal Huang, Zeyu Zhang, Jing Zou, Shiming Yuan, Mingkuan Xu, Jiawei Wang, Xiyang Xie, Shiqing Chen, Jinhui Chen, Junfeng Wang, Xiaolong Instrumentation and Detectors High Energy Physics - Experiment Nuclear Experiment We report the scintillation and timing performance of a new developed 200 * 20 mm * 20 mm large size barium fluoride crystal doped with 3at% yttrium (BaF2:Y) to enhance the application for high time resolution. This doping effectively suppresses the slow scintillation component while maintaining most of the fast component, as confirmed by X-ray excited luminescence measurements. The BaF2:Y crystal demonstrated a transmittance of near 90% in the visible spectrum and a light response uniformity parameter of delta = (-2.74 +- 1.15)% when coupled with the tail end. The actual yttrium content varied from 2.1at% near the seed end to 3.7at% at the tail end. The assembled large BaF2:Y detector with silicon photomultipliers exhibited a time resolution of (82.2 +- 2.6) ps using constant fraction discrimination method in a cosmic ray test and (140.1 +- 3.8) ps using a low fixed threshold method in a beam test at Shanghai Synchrotron Radiation Facility with an 1.35 GeV electron beam. These results indicate the significant potential of BaF2:Y crystal for various applications, such as detectors for particle physics and nuclear physics. |
| title | Scintillation and Timing Performance of a 3at% Yttrium-Doped Barium Fluoride Crystal |
| topic | Instrumentation and Detectors High Energy Physics - Experiment Nuclear Experiment |
| url | https://arxiv.org/abs/2501.09388 |