论文标题
用1/2和1英寸LABR 3检测低能X射线：CE晶体由SIPM阵列读取
Detection of low-energy X-rays with 1/2 and 1 inch LaBr3:Ce crystals read by SIPM arrays
论文作者
论文摘要
LABR3：CE晶体，带有光电倍增器或单个SIPM读数（最高3x3毫米$^2 $），用于医学物理学中的辐射成像。通过1/2“和1” labr3：CE晶体从不同的生产商那里进行了研发，以实现带有SIPM阵列读数的紧凑型大面积探测器（高达CM $^2 $面积），瞄准了高能产量，良好的能量分辨率，良好的检测器线性和快速的时间响应，对低Enerygy X-Rays的快速响应。这项研究是由FAMU实验在Riken-ral Muon设施上触发的，旨在精确测量质子Zemach半径，以解决所谓的“质子半径拼图”。目的是检测特征X射线大约130 KEV。其他应用程序可能会用于国土安全性和$γ$ ray天文学。基于CAEN V1730 FADC的直接读数获得结果，而不需要放大阶段。在CS $^{137} $峰值上，使用Hamamatsu SIPM阵列的读数获得了高达$ \ sim 3 \％$的能源分辨率。这些结果与PMT读数获得的最佳可用结果相比。
LaBr3:Ce crystals, with photomultiplier or single SiPM readout (up to 3x3 mm$^2$) have been introduced for radiation imaging in medical physics. An R&D was pursued with 1/2" and 1" LaBr3:Ce crystals, from different producers, to realize compact large area detectors (up to some cm $^2$ area) with SiPM array readout, aiming at high light yields, good energy resolution,good detector linearity and fast time response for low-energy X-rays. The study was triggered by the FAMU experiment at the RIKEN-RAL muon facility, aiming at a precise measurement of the proton Zemach radius to solve the so-called "proton radius puzzle". The goal is the detection of characteristic X-rays around 130 KeV. Other applications may be foreseen for homeland security and $γ$-ray astronomy. Results were obtained with a direct readout based on a CAEN V1730 FADC, with no need for an amplification stage. At the Cs$^{137}$ peak, energy resolutions up to $\sim 3 \%$ were obtained, using a readout with Hamamatsu SiPM arrays. These results compare well with best available results obtained with a PMT readout.
