A low-noise current-sensitive preamplifier VIEC based on a charge-sensitive preamplifier

被引:0
|
作者
Kanno, Ikuo [1 ]
Nishikawa, Junichiro [1 ]
Onabe, Hideaki [2 ]
机构
[1] Kyoto Univ, Grad Sch Engn, Dept Nucl Engn, Nishikyo, Kyoto 6158530, Japan
[2] Raytech Corp, Utsunomiya, Tochigi 3210904, Japan
关键词
Current preamplifier; Charge preamplifier; Low noise; Dynamic range; X-ray computed tomography;
D O I
10.1016/j.nima.2022.167789
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
A low-noise current-sensitive preamplifier VIEC has been developed based on the circuitry of a charge-sensitive preamplifier. In this paper, the dynamic ranges of the VIEC and a conventional current-sensitive preamplifier are measured and compared. A method to increase the dynamic range of the VIEC is described. Using the VIEC with enhanced dynamic range, a computed tomography measurement is performed for a strongly attenuating phantom comprising a 10-cm-diameter acrylic cylinder with a 3-cm-diameter iron rod in the center.
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页数:6
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