E.Griesmayer, H.Frais-Kölbl

Fachhochschule Wiener Neustadt, AUSTRIA

Electronics Department

 

Calibration of the Phobos Silicon Detectors

 

 

Principle:

 

 

 

 

 

 

 

 

 

 

 

 

 

Measurements:

 

 

 

 

 

 

 

 

 

 

 

 

The calibration circuit:

Calibration voltage:

 

 

Preamplifier putput:

 

Absolute linearity:

 

 

 

Relative linearity:

 

 

Detector linearity (10 channels):

 

 

 

 

Backplane calibration

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Coupling:

 

`

Transition time

 

Detector uniformity

 

 

 

 

 

To be studied …………

  1. Baseline noise:

5 mVrms @ 20 MHz and 20 mVrms @ 100 MHz at the preamplifier.

  1. Power supplies and cabling:

  1. Timing of the DAC:

 

Good luck !