Microchannel plate based detectors with cross delay line image readout have been rapidly implemented for the SUMER and UVCS instruments aboard the Solar Orbiting Heliospheric Observatory (SOHO) mission to be launched in July 1995. In October 1993 a fast track program to build and characterize detectors and detector control electronics was initiated. We present the detector system design for the SOHO UVCS and SUMER detector programs, and results from the detector test program. Two deliverable detectors have been built at this point, a demonstration model for UVCS, and the flight Ly alpha detector for UVCS, both of which are to be delivered in the next few weeks. Test results have also been obtained with one other demonstration detector system. The detector format is 26mm x 9mm, with 1024 x 360 digitized pixels, using a low resistance Z stack of microchannel plates (MCP's) and a multilayer cross delay line anode (XDL). This configuration provides gains of approximately 2 x 10(exp 7) with good pulse height distributions (less than 50% FWHM) under uniform flood illumination, and background levels typical for this configuration (approximately 0.6 event cm (exp -2)sec(exp -1)). Local counting rates up to about 400 events/pixel/sec have been achieved with no degradation of the MCP gain. The detector and event encoding electronics achieves about 25 millimeter FVHM with good linearity (plus or minus approximately 1 pixel) and is stable to high global counting rates (greater than 4 x 10(exp 5) events sec(exp -1)). Flat field images are dominated by MCP fixed pattern noise and are stable, but the MCP multifiber modulation usually expected is uncharacteristically absent. The detector and electronics have also successfully passed both thermal vacuum and vibration tests.
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机译：在1995年7月发射的太阳轨道日球天文台（SOHO）任务中，已经为SUMER和UVCS仪器快速实施了具有交叉延迟线图像读出的基于微通道板的探测器。1993年10月，一个快速通道计划用于构建和表征探测器以及探测器控制电子装置已启动。我们介绍了SOHO UVCS和SUMER检测器程序的检测器系统设计，以及检测器测试程序的结果。至此，已经建造了两个可交付使用的探测器，一个用于UVCS的演示模型，以及一个用于UVCS的飞行Ly alpha探测器，两者都将在接下来的几周内交付。使用另一台演示检测器系统也获得了测试结果。检测器格式为26mm x 9mm，具有1024 x 360数字像素，使用低阻抗Z堆栈的微通道板（MCP）和多层交叉延迟线阳极（XDL）。在均匀的泛光照明下，此配置可提供约2 x 10（exp 7）的增益，并具有良好的脉冲高度分布（小于50％FWHM），以及该配置典型的背景水平（约0.6 event cm（exp -2）sec（exp -1））。在不降低MCP增益的情况下，已实现了高达约400个事件/像素/秒的本地计数率。检测器和事件编码电子器件可实现约25毫米FVHM，具有良好的线性度（正负约1个像素），并且对高全局计数率（大于4 x 10（exp 5）个事件sec（exp -1））稳定。平场图像主要受MCP固定模式噪声的影响，并且很稳定，但是通常所期望的MCP多光纤调制通常都不存在。检测器和电子设备还成功通过了热真空和振动测试。
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