Ramping up the channelplate

In normal operations, when you turn on or off the detector, take care NOT to have a difference of more than 5 kV between MCP and SCREEN.
The following conditioning procedure is to be followed only after venting and bake-out.

  1. Apply voltage to the phosphor screen (Va) in +250V, 1 minute increments. Stop at +1.0 kV.

  2. Apply voltage to the channelplates (Vo) in +100V, 2 minute increments. Stop at + 1.0 kV.

  3. Increase the voltage to the phosphor screen (Va) in +100V, 5 minute increments to +3.0 kV. Wait 5 minutes.

  4. Increase the voltage to the phosphor screen (Va) in +100V, 10 minure increments to +4.0 kV. Wait 5 minutes.

  5. Simultaneously increase the voltage to the phosphor screen (Va) and to the channelplates (Vo) in +100V in 10 minute increments to +4.5 kV at Va and +1.5 kV at Vo.

  6. Increase the voltage to the phosphor screen (Va) in 10 minute increments to +5.5 kV.

  7. Optional. Simultaneously increase the voltage to the phosphor screen (Va) and to the channelplates (Vo) in +50V, 10 minute increments to +6.5 kV at Va and +2.0 kV at Vo.

Total time about 6 hours.

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Last Updated on Tuesday, 31 October 2017 17:31