Beam Imaging真空熒光屏顯示屏

真空熒光顯示屏是從真空電子管發展而來的顯示器件，由發射電子的陰極（直熱式，統稱燈絲），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極及柵網和玻蓋構成。它利用電子撞擊熒光粉，使熒光粉發光，是一種自身發光顯示器件。它可以做多色彩顯示，亮度高，又可以用低電壓來驅動，易與集成電路配套。

Beam Imaging 電子束觀察系統 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.

Imaging Area:

  • 75mm Diameter

MCP: (Standard)

  • 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

Phosphor Screen (Standard)

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

Power Supply Requirements:

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

Beam Energy Range:

  • 1 eV to over 50 keV

Beam Current Range:

  • < 10 μA (with optional beam attenuation grids)

Vacuum:

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

Welded Glass Windows (Standard)

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

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