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Microchannel plate assembly
F14844
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MCPs are made of millions to tens of millions of conductive glass capillaries bundled together to form a thin plate.
The F14844 is a microchannel plate (MCP) assembly with a unique triode structure*1 designed to vary the potential gradient and to suppress ion feedback*2 noise. This makes the F14844 a useful tool for portable desktop mass spectrometers in which it is difficult to install a large vacuum pumping system. The F14844 is a breakthrough ion detector that allows downsizing and cost reduction of the equipment.
*1: Structure consisting of three electrodes which are the MCP-out, mesh anode, and dynode.
*2: Ion feedback is the cause of unstable operation that occurs under low vacuum conditions
Specifications
| Items | F14844 | Unit | |
|---|---|---|---|
| Number of MCPs | 2 | ー | |
| Effective area | Φ14.5 | mm | |
| Signal readout | Single anode | ー | |
| Channel diameter | 12 | µm | |
| Gain*1 | Min. | 1 × 106 | ー |
| Dark count *1 | Max. | 3 | S-1・cm2 |
| MCP supply voltage*2 | 2.0 | kV | |
| MCP-OUT to anode supply voltage*2 | 0.1 | kV | |
*1: Supply voltage: 1.0 kV/MCP, vacuum: 1.3 × 10-4 Pa, operating ambient temperature: +25 °C
*2: Vacuum: 1.3 × 10-4 Pa
Operating principle
Characteristic
Output stability(typ)
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Dimensional outline (Unit:mm)
- Confirmation
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