Open Microchannel Plate Imaging Detectors (MCP-GPS and MCP-IFP)

Open Microchannel Plate Imaging Detectors (MCP-GPS and MCP-IFP)

Open Microchannel Plate Imaging Detectors have a design similar to MCP detectors with Metal Anode. Instead of simple metal anode an aluminized phosphor screen is used as a readout device. An electron cloud is drawn across a 0.7 - 1 mm gap by a high voltage onto micro-crystalline phosphor screen where the kinetic energy of the electrons is released as light.
Due to a high voltage electron image transferred to the visual image practically without distortions (this is called proximity focusing).

The phosphor screens deposited on a glass window are realized in MCP-GPS series and on a fiber-optic plate in MCP-IFP series. Drawing shows a cross-section of the imaging detector with a fiber-optic plate.

The optical image can be viewed directly, or coupled to a camera.

MCP-GPS and MCP-IFP imaging detectors are available in the same sizes and MCP-assembly options as MCP-MA detectors.

Open imaging detectors must be operated in pressures of less than 6.5*10^-4 Pa (5 *10^-6 Torr).

Recommended and maximum applied voltage to MCPs and phosphor screen are as follows:

Between MCP-in and MCP-out:

Set this voltage according to the required gain, 700 -1000V per MCP typical, 1100 V maximum, MCP out at positive polarity.

Between MCP-out and phosphor screen:

A bias in the range 2.5-5 kV between MCP output and screen is required.

For Part Number and Price Information go MCP Assemblies page.

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