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7010 gc/ms/ms. Parametr autotune. Voltage at the HES source and EMV

Azrael

Hello

I have 7010 ms/ms. And when I did autotune and I didn’t like the voltage on the HES and EMV source. The repeller voltage should be between 22 and 32 volts. I have 16 volts. Ion focus normal voltage -74 - 90 volts, I have -193 volts. And I also do not like the voltage on the EMV, it is 2220 volts, I think this is a lot, although it is permissible. I have two questions. What could be the reason for these deviations in voltages, is it necessary to change the source of the HES, or will it be enough to clean it? And the second question - where can I find more detailed information about the ms/ms settings?

I attach file autotune

regards, AzraelPDF

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  • 0

    The other things I notice are that there is a 5% air leak and the max gain factor of the electron multiplier is 2.0. I would recommend ordering a replacement electron multiplier once the max gain factor is below 100 and replace it at the next maintenance or once the max gain factor is below what is used in the method. I agree the MS2 peak shapes do not look very good. Did this improve at all when you turned the collision gas flow back on?

  • 0 in reply to graettin

    Yes, you need to order the EMF. But can it be that there is an increased voltage on the tank because the HES source is not working correctly? I was told that the insulators were not in order, they were broken. Therefore, the voltages on the lenses are not within the permissible parameters? Autotune I cannot check with other parameters. I do not work on this device. Then I will definitely do it, but it will not be soon.

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  • 0 in reply to graettin

    Yes, you need to order the EMF. But can it be that there is an increased voltage on the tank because the HES source is not working correctly? I was told that the insulators were not in order, they were broken. Therefore, the voltages on the lenses are not within the permissible parameters? Autotune I cannot check with other parameters. I do not work on this device. Then I will definitely do it, but it will not be soon.

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