SPECS 2D-CCD, User Manual

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Manual V2.docx | Status 10.12.2015 | Version 1
Camera specifications 6.7
Table 6 contains a summary of the camera specifications.
Table 6. Camera specifications.
PixelFlyQE USB PixelFly1300
Bit depth 14 Bit 12 Bit
Full well capacity 16000 e
-
16000 e
-
Read out noise 7 e
-
10 e
-
Average dark charge 1 e
-
/s 0.05 e
-
/s
A/D conversion factor 1.0 e
-
/count 3.9 e
-
/count
Quantum efficiency Up to 62% Typ. 62%
Micro channel plates 6.8
A micro-channel plate (MCP) consists of millions of very thin, conductive glass capillaries (10
μm in diameter) fused together and sliced into a thin plate. Each capillary (or channel) works
as an independent secondary-electron multiplier, thus forming a two-dimensional array of
multipliers.
MCPs show high detection efficiency for electrons and ions; they are also sensitive to a wide
range of other radiation, including UV, VUV, and soft X-ray photons, and even neutrons. The
MCP offers many advantages over conventional detectors: compact and lightweight, good
timing properties due to short length, high gain, excellent pulse height distribution, and two-
dimensional imaging when used in conjunction with a phosphor screen.
Care of MCPs 6.9
MCPs are extremely sensitive parts. The channel plate material is slightly hygroscopic, and
therefore the detector has to be protected during transport and service.
You should observe the following points when using the channel plates:
•
If the detector is not in use, store it under vacuum using the transportation case.
Exposure to air for over 12 hours can lead to small fissures in the MCP.
•
The detector can be damaged by excessive voltage. See the test report for the
normal operation voltage.
•
The first time the detector is used, or after the system has been vented, the detector
voltages must be ramped very slowly to their final value. See Section 2.5 on p. 11.