User's Manual

TES-63 Source
User manual – version 06/2021
Page 24/46
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The fourth box (grey) is a reading of the current supplied by the high voltage power supply. This value
is displayed in orange because it is an important parameter for the characterization of the beam.
You can change the polarity of the HV supply with the button “Pol. Beam”, but only
when the HV button is off.
d) Focus parameters:
The beam focusing can be adapted by changing the high voltage applied to the focus electrode.
Through the program the high voltage applied to the focus electrode can be tuned between 0 and
15kV. The program requires the user to choose a value lower than or equal to 99% of the value of the
high voltage applied to the source body (see Beam parameters).
The top box (white) is where the requested high voltage should be entered.
The second box (white) is the maximum intensity the supply can go.
The third box (grey) gives the voltage value that is being read. These two should be the same or very
close. If that is not the case, there is a problem that needs to be identified.
The fourth box (grey) is a reading of the current supplied by the high voltage power supply for the
focus electrode. When the source parameters are correctly configured, the beam should not hit the
focus electrode, and this current should stay very low.
You can change the polarity of the HV supply with the button “Pol. Foc”, but only when
the HV button is off.
e) Parameters related to user equipment:
This dialog box is for the reading of user equipment (not included with IE-GUN).
The program offers ten 0-10V read channels. It is recommended to use one of the read channels for a
Faraday cup to measure beam current.