期刊
SENSORS
卷 22, 期 14, 页码 -出版社
MDPI
DOI: 10.3390/s22145360
关键词
gated-integrator; synchronous measurements; radiotherapy; diamond dosimeter
This paper describes a compact electronic system that uses a synchronous demodulation measurement method to acquire pulsed-current signals. The system demonstrates superior performance in terms of signal-to-noise ratio compared to conventional instruments, and has a reading error of about 0.1% regardless of the signal duty cycle.
This paper describes a compact electronic system employing a synchronous demodulation measurement method for the acquisition of pulsed-current signals. The fabricated prototype shows superior performance in terms of signal-to-noise ratio in comparison to conventional instrumentation performing free-running measurements, especially when extremely narrow pulses are concerned. It shows a reading error around 0.1% independently of the signal duty cycle (D) in the investigated D = 10(-4)-10(-3) range. Conversely, high-precision electrometers display reading errors as high as 30% for a D = 10(-4), which reduces to less than 1% only for D > 3 x 10(-3). Field tests demonstrate that the developed front-end/readout electronics is particularly effective when coupled to dosimeters irradiated with the X-rays sourced by a medical linear accelerator. Therefore, it may surely be exploited for the real-time monitoring of the dosimeter output current, as required in modern radiotherapy techniques employing ultra-narrow pulses of high-energy photons or nuclear particles.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据