MINIDC MinVoltageStudy

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Revision as of 17:29, 16 October 2007 by Oborn (talk | contribs) (→‎SenseWire 7)
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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
1705 -855 SenseWire2 1700V Cosmic 10-12-07.jpg
1695 -850 SenseWire2 1695V Cosmic 10-12-07.jpg
1685 -845 SenseWire2 1685V Cosmic 10-12-07.jpg
1675 -840 SenseWire2 1675V Cosmic 10-12-07.jpg
1665 -835 SenseWire2 1665V Cosmic 10-12-07.jpg


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
1685 -845 SenseWire3 1685V Cosmic 10-12-07.jpg
1675 -840 SenseWire3 1675V Cosmic 1 10-12-07.jpg
1665 -836 SenseWire3 1665V Cosmic 10-12-07.jpg
1655 -831 SenseWire3 1655V Cosmic 10-12-07.jpg
1645 -826 SenseWire3 1645V Cosmic 10-12-07.jpgSenseWire3 1645V Cosmic 1 10-12-07.jpg
1635 -820 SenseWire3 1635V Cosmic 10-12-07.jpgSenseWire3 1635V Cosmic 1 10-12-07.jpg


SenseWire 4

Preamplifier voltage was set to 5.9 Volts.

Sense Wire HV (Volts) Field Wire HV (Volts) Scope Image
1705 -855 SenseWire 4 1705V Cosmics 10-12-07.jpg
1695 -850 SenseWire 4 1695V Cosmics 10-12-07.jpg
1685 -845 SenseWire4 1685V Cosmics 10-12-07.jpg
1675 -840 SenseWire4 1675V Cosmic 10-12-07.jpg
1665 -835 SenseWire 4 1665V Cosmics 10-12-07.jpg


SenseWire 5

Preamplifier voltage was set to 5.9 Volts.

Sense Wire HV (Volts) Field Wire HV (Volts) Scope Image
1705 -855 SenseWire5 1705V Cosmic 10-12-07.jpg
1695 -850 SenseWire5 1695V Cosmic 10-12-07.jpg
1685 -845 SenseWire5 1685V Cosmic 10-12-07.jpgSenseWire5 1685V Cosmic 1 10-12-07.jpg
1675 -840 SenseWire5 1675V Cosmic 10-12-07.jpgSenseWire5 1675V Cosmic 1 10-12-07.jpg
1665 -835 SenseWire5 1665V Cosmic 10-12-07.jpg


SenseWire 6

Preamplifier voltage was set to 5.9 Volts.

Sense Wire HV (Volts) Field Wire HV (Volts) Scope Image
1705 -855 SenseWire6 1705V Cosmic 10-12-07.jpg SenseWire6 1705V Cosmic 1 10-12-07.jpg
1695 -850 SenseWire6 1695V Cosmic 10-12-07.jpgSenseWire6 1695V Cosmic 1 10-12-07.jpg
1685 -845 SenseWire6 1685V Cosmic 10-12-07.jpgSenseWire6 1685V Cosmic 1 10-12-07.jpg
1675 -840 SenseWire6 1675V Cosmic 10-12-07.jpgSenseWire6 1675V Cosmics 1 10-12-07.jpg
1665 -835 SenseWire6 1665V Cosmic 10-12-07.jpgSenseWire6 1665V Cosmic 1 10-12-07.jpg
1655 -830 SenseWire6 1655V Cosmic 10-12-07.jpgSenseWire6 1655V Cosmic 1 10-12-07.jpgSenseWire6 1655V Cosmic 2 10-12-07.jpg
1645 -825 SenseWire6 1645V Cosmic 10-12-07.jpg


SenseWire 7

Preamplifier voltage was set to 5.9 Volts.

Sense Wire HV (Volts) Field Wire HV (Volts) Scope Image
1705 -855 SenseWire7 1705V Cosmic 10-12-07.jpgSenseWire7 1705V Cosmic 1 10-12-07.jpgSenseWire7 1705V Cosmic 2 10-12-07.jpg
1695 -850 SenseWire7 1695V Cosmic 10-12-07.jpg
1685 -845 SenseWire7 1685V Cosmic 10-12-07.jpg
1675 -840 SenseWire7 1675V Cosmic 10-12-07.jpg
1665 -835 SenseWire7 1665V Cosmic 10-12-07.jpg



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