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首页> 外文会议>Conference on EUV, x-ray, and gamma-ray instrumentation for astronomy >Laboratory performance of the proportional counter array experiment for the X-ray Timing Explorer
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Laboratory performance of the proportional counter array experiment for the X-ray Timing Explorer

机译：X射线时序探索器比例计数器阵列实验的实验室性能

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摘要

In this paper we briefly describe the design and initial laboratory performance of the Proportional Counter Array (PCA) for the X-ray Timing Explorer (XTE). The PCA consists of 5 identical, sealed and collimated (1$DGR FWHM), xenon/methane multi-anode proportional counters sensitive to x-rays with energies between 2 and 60 keV. Each detector has an effective area of approximately 1,500 cm$+2$/. The data system can tag the relative time of arrival of each event with an accuracy of 1 $mu@s. The overall absolute time accuracy will be maintained by the spacecraft to better than 1 ms. Following the design principles of the HEAO-1 A2 HED detectors, the PCA adopts the interleaved anode connection scheme with an active propane anti- coincidence layer in the front and a similar anti-coincidence xe/methane layer on three other sides of the detector. The interleaved anode connection scheme and the anti-coincidence layers reject background events caused by charged particles with high efficiency, thus significantly reducing the background event rate at lower energies. As of June, 1993, the fabrication and assembly of all the five detectors had been completed. Their performance evaluation and characterization are currently under way. XTE is scheduled to be launched with a Delta-II rocket in the summer of 1995.
机译：在本文中，我们简要描述了X射线时序浏览器（XTE）比例计数器阵列（PCA）的设计和初始实验室性能。 PCA由5个相同，密封和准直（1 $ DGR FWHM），氙/甲烷多阳极比例计数器对X射线敏感，具有2至60 keV之间的能量。每个探测器的有效面积约为1,500厘米+ 2美元/。数据系统可以用1 $ mu @ s的准确度标记每个事件的相对时间。总体绝对的时间准确性将由航天器维护到优于1毫秒。在Heo-1 A2铰接探测器的设计原理之后，PCA采用在探测器的三个另一侧面的前部和类似的抗巧合XE /甲烷层中的有源丙烷抗重合层的交错阳极连接方案。交织阳极连接方案和抗巧合层抑制了具有高效率的带电粒子引起的背景事件，从而显着降低了较低能量的背景事件速率。截至1993年6月，所有五种探测器的制造和组装已完成。他们目前正在进行的绩效评估和表征。 XTE计划在1995年夏天使用Delta-II火箭启动。

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