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26 April 2024 |
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A Beam Monitor Using Silicon Pixel Sensors for Hadron Therapy | | Zhen Wang
; Shuguang Zou
; Yan Fan
; Jun Liu
; Xiangming Sun
; Dong Wang
; Huili Kang
; Daming Sun
; Ping Yang
; Hua Pei
; Guangming Huang
; Nu Xu
; Chaosong Gao
; Le Xiao
; | | Date: |
22 Nov 2016 | | Abstract: | We report the design and test results of a beam monitor developed for online
monitoring in hadron therapy. The beam monitor uses eight silicon pixel
sensors, extit{Topmetal-${II}^-$}, as the anode array.
extit{Topmetal-${II}^-$} is a charge sensor designed in a CMOS 0.35 $mu$m
technology. Each extit{Topmetal-${II}^-$} sensor has $72 imes72$ pixels.
Each pixel size is about $83 imes83$ $mu$m$^2$. In our design the beam passes
through the beam monitor without hitting the electrodes, making the beam
monitor especially suitable for monitoring heavy ion beams. This design also
reduces radiation damage to the beam monitor itself. The beam monitor is tested
at the Heavy Ion Research Facility in Lanzhou (HIRFL) which provides a carbon
ion beam. Results indicate that the beam monitor can measure position, incident
angle and intensity of the beam with a position resolution better than 20
$mu$m, angular resolution about 0.5$^circ$ and intensity statistical accuracy
better than 2$\%$. | | Source: | arXiv, 1611.7147 | | Services: | Forum | Review | PDF | Favorites | |
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