Commissioning of the Cosmic Ray Muon Detector
UPDATE 29-APR-2006:
I just discovered that there is a periodic signal on the 100k resistors, which is the supply voltage ripple of the high
voltage module. The ripple on the 100k load resistor is about 2.4Vp with a frequency of ~75kHz. Hence the capacity of
the flat detectors is not neglectible - a very stable power supply is needed. This is also in agreement to previous
observations, when the HV and "GND" wires of the GM tube experiment were close to each other. This also resulted in continuous
false counts.
Since the frequency is quite high and there is virtually no current drawn from the power supply, it should
be easy to come up with a good filtering network.
Last-Modified: Sat, 29 Apr 2006 17:52:43 GMT
Be very careful when handling high voltages!
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