Results from a 40 mm intensifier using a multilayer ceramic imaging element

Abstract

We describe a highly versatile 40 mm diameter microchannel plate intensifier tube using an electronic image read out manufactured in a collaboration between the Mullard Space Science Laboratory and EEV. A development programme is underway to demonstrate photon imaging using a variety of charge division image read-out designs all of which are accommodated in a new generic tube design. Each read out is aimed for maximum performance at a specific region of the resolution versus dynamic range envelope, from high-speed, moderate resolution (10 MHz, 64 pixel) to ultimate resolution (100 kHz, 4000 pixel). The generic tube design utilizes a multilayer ceramic component which forms the tube vacuum vessel rear flange, while also acting as a 26 contact electrical feedthrough and as a substrate for the read-out anode. The output pins of the ceramic are arranged to mate with an industry-standard multipole socket for easy connection and replacement. This component provides a much more compact and robust solution to the integration of the electronic read out with the intensifier than is commonly seen with this technology. A further novel element in the design is a semi-transparent grid above the anode used to control secondary electron emission, an effect which can compromize imaging performance. We present results from initial testing of the device.