真空熒光顯示屏是從真空電子管發(fā)展而來的顯示器件，由發(fā)射電子的陰極（直熱式，統(tǒng)稱燈絲），加速控制電子流的柵極，玻璃基板上印上電極和熒光粉的陽(yáng)極及柵網(wǎng)和玻蓋構(gòu)成。它利用電子撞擊熒光粉，使熒光粉發(fā)光，是一種自身發(fā)光顯示器件。它可以做多色彩顯示，亮度高，又可以用低電壓來驅(qū)動(dòng)，易與集成電路配套。

Beam Imaging 電子束觀察系統(tǒng) BOS-75

In standard form, the model BOS-75 Beam Observation system has a 75mm diameter active area MCP and P-43 phosphor screen assembly, attached to a 8.00″ (203mm) conflat flange with glass viewport. Electrical connections to the phosphor screen and MCP are made with MHV feedthroughs.

Optional configurations are discussed in detail below and include, dual MCP plates (chevron), SHV feedthroughs, and CCD camera systems.

• 75mm Diameter

• 3.410″ Diam. (BOS-75), 25 micron channel diameter, Detection or Imaging Grade
• 75mm active area, 32 micron pitch, 8° Bias Angle, 40:1 Aspect Ratio (Standard, BOS-75)
• Min. Gain:? 1 x 10^4 (single plate, Std.) 1000V? > 107 (chevron, OPT-01), 2000V

• P-43 with aluminum overcoat. P-43 Peak Wavelength: λ= 545 nm.

• 0 – + 1000V, 1mA single MCP (Standard)
• 0 – + 2000V, 1mA dual MCP (OPT-01)
• 0 – + 5000V, 1 mA Phosphor Screen

• 1 eV to over 50 keV

• < 10 μA (with optional beam attenuation grids)

• 1 x 10-6 Torr or better required to operate MCP
• UHV compatible, maximum bakeout temperature 300 C

• A non-removable glass window that is welded to the flange is standard. This allows bakeout temperatures > 200C.