Study of hole-type gas multiplication structures for portal imaging and other high counting rate applications
Study of hole-type gas multiplication structures for portal imaging and other high counting rate applications
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用于射野成像和其他高计数率应用的孔型气体倍增结构的研究
DOI：
10.1109/nssmic.2002.1239388
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发表时间：
2002
期刊：
影响因子：
--
通讯作者：
V. Peskov
中科院分区：
文献类型：
--
作者：
J. Ostling;A. Brahme;M. Danielsson;T. Francke;C. Iacobaeus;V. Peskov
我们在非常高通量的X射线（<60 keV -韧致辐射）和脉冲伽马辐射（< 50 MeV韧致辐射）下对各种空穴型气体倍增结构（GEM、毛细管板等）的操作进行了研究。在X射线的情况下，计数率为10/sup 5/-10/sup 6/ Hz/mm/sup 2/，在伽马射线的情况下，计数率在脉冲期间达到10/sup 9/ Hz/mm/sup 2/。在大多数测量中，所有探测器区域都暴露在这些极高的通量下。到目前为止获得的结果表明，GEM和氢处理的毛细管板可以成功地用于医学成像应用。
We performed studies of operation of various hole-type gas multiplication structures (GEM, capillary plates and others) at very high fluxes of X-rays (<60 keV - brehmstrahlung) and pulsed gamma radiation (< 50 MeV bremsstrahlung). In the case of X-rays the counting rate was 10/sup 5/-10/sup 6/ Hz/mm/sup 2/ and in the case of gamma it reached up to 10/sup 9/ Hz/mm/sup 2/ during the pulses. In most of the measurements all detector-area was exposed to these extremely high fluxes. Results obtained so far indicate that the GEM and the hydrogen treated capillary plates could be successfully used in medical imaging applications.