Difference between revisions of "MINIDC MinVoltageStudy"
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Preamplifier voltage was set to 5.9 Volts. We saw a lot of noise ( 40 mV peak to peak) when increasing the preamp voltage from 2.2 V to 5.7 Volts. After 5.7 volts the noise when back to a noise level of 8 mV peak to peak which is smaller than the [http://www.iac.isu.edu/mediawiki/index.php/Image:PlasticaNoise_10-9-07.jpg 16 mV peak to peak noise observed 3 days ago] on the sense wire (capacitor side)before the preamp. | Preamplifier voltage was set to 5.9 Volts. We saw a lot of noise ( 40 mV peak to peak) when increasing the preamp voltage from 2.2 V to 5.7 Volts. After 5.7 volts the noise when back to a noise level of 8 mV peak to peak which is smaller than the [http://www.iac.isu.edu/mediawiki/index.php/Image:PlasticaNoise_10-9-07.jpg 16 mV peak to peak noise observed 3 days ago] on the sense wire (capacitor side)before the preamp. | ||
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Revision as of 18:18, 12 October 2007
Operating Voltage Study
We will lower the operating voltage and take scope pictures to determine the operating point for the mini chamber.
SenseWire 1
Sense wire 2
Preamplifier voltage was set to 5.9 Volts. We saw a lot of noise ( 40 mV peak to peak) when increasing the preamp voltage from 2.2 V to 5.7 Volts. After 5.7 volts the noise when back to a noise level of 8 mV peak to peak which is smaller than the 16 mV peak to peak noise observed 3 days ago on the sense wire (capacitor side)before the preamp.
| Sense Wire HV (Volts) | Field Wire HV (Volts) | Scope Image |
| 1700 | -850 | 
|