MINIDC MinVoltageStudy

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Revision as of 20:37, 13 October 2007 by Oborn (talk | contribs) (→‎SenseWire 5)
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Operating Voltage Study

We will lower the operating voltage and take scope pictures to determine the operating point for the mini chamber.


SenseWire 1

Preamplifier voltage was set to 5.9 Volts.

Sense Wire HV (Volts) Field Wire HV (Volts) Scope Image
1700 -850 SenseWire1 1700V Cosmic 10-12-07.jpg
1690 -845 SenseWire1 1690V Cosmic 10-12-07.jpg
1680 -840 SenseWire1 1680V Cosmics 10-12-07.jpg
1670 -835 SenseWire1 1670V Cosmics 10-12-07.jpg
1660 -830 SenseWire1 1660V Cosmics 10-12-07.jpg
1650 -825 SenseWire1 1650V Cosmics 10-12-07.jpg


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 SenseWire2 1700V Cosmic 10-12-07.jpg
1690 -845 200 px



SenseWire 3

Preamplifier voltage was set to 5.9 Volts.

Sense Wire HV (Volts) Field Wire HV (Volts) Scope Image
1700 -850 SenseWire3 1700V Cosmic 10-12-07.jpg
1690 -845 SenseWire3 1690V Cosmic 10-12-07.jpg



SenseWire 4

Preamplifier voltage was set to 5.9 Volts.

Sense Wire HV (Volts) Field Wire HV (Volts) Scope Image
1700 -850 200 px
1690 -845 200 px


SenseWire 5

Preamplifier voltage was set to 5.9 Volts.

Sense Wire HV (Volts) Field Wire HV (Volts) Scope Image
1700 -850 200 px
1690 -845 200 px


SenseWire 6

Preamplifier voltage was set to 5.9 Volts.

Sense Wire HV (Volts) Field Wire HV (Volts) Scope Image
1700 -850 200 px
1690 -845 200 px



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