Difference between revisions of "MINIDC MinVoltageStudy"
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| Line 77: | Line 77: | ||
|Scope Image | |Scope Image | ||
|- | |- | ||
| − | |1705 || -855|| [[Image: | + | |1705 || -855|| [[Image:SenseWire4_1705V_Cosmic_10-12-07.jpg | 200 px]] |
|- | |- | ||
|1695 || -850|| [[Image:SenseWire4_1695V_Cosmics_10-12-07.jpg | 200 px]] | |1695 || -850|| [[Image:SenseWire4_1695V_Cosmics_10-12-07.jpg | 200 px]] | ||
Revision as of 17:29, 15 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
Preamplifier voltage was set to 5.9 Volts.
| Sense Wire HV (Volts) | Field Wire HV (Volts) | Scope Image |
| 1700 | -850 | 
|
| 1690 | -845 | 
|
| 1680 | -840 | 
|
| 1670 | -835 | 
|
| 1660 | -830 | 
|
| 1650 | -825 | 
|
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 | 
|
| 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 | 
|
| 1690 | -845 | 
|
| 1685 | -845 | 
|
| 1675 | -840 | 
|
| 1665 | -836 | 
|
| 1655 | -831 | 
|
| 1645 | -826 |  
|
| 1635 | -820 |  
|
SenseWire 4
Preamplifier voltage was set to 5.9 Volts.
| Sense Wire HV (Volts) | Field Wire HV (Volts) | Scope Image |
| 1705 | -855 | 
|
| 1695 | -850 | 
|
| 1685 | -845 | 
|
| 1675 | -840 | 
|
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 |