Difference between revisions of "MINIDC MinVoltageStudy"
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We will lower the operating voltage and take scope pictures to determine the operating point for the mini chamber. | We will lower the operating voltage and take scope pictures to determine the operating point for the mini chamber. | ||
− | + | {| border="1" cellspacing="0" | |
+ | |- | ||
+ | |Sense Wire | ||
+ | |Sense Wire HV (Volts) | ||
+ | |Field Wire HV (Volts) | ||
+ | |- | ||
+ | |1 || || | ||
+ | |- | ||
+ | |2 ||1685 ||-845 | ||
+ | |- | ||
+ | |3 ||1675 ||-840 | ||
+ | |- | ||
+ | |4 ||1685 ||-845 | ||
+ | |- | ||
+ | |5 ||1675 ||-840 | ||
+ | |- | ||
+ | |6 ||1655 ||-830 | ||
+ | |- | ||
+ | |7 ||1685 ||-845 | ||
+ | |}<br> | ||
==SenseWire 1== | ==SenseWire 1== | ||
Line 15: | Line 34: | ||
|1700 || -850|| [[Image:SenseWire1_1700V_Cosmic_10-12-07.jpg | 200 px]] | |1700 || -850|| [[Image:SenseWire1_1700V_Cosmic_10-12-07.jpg | 200 px]] | ||
|- | |- | ||
− | | | + | |1695 || -845|| [[Image:SenseWire1_1695V_Cosmic_10-12-07.jpg | 200 px]] |
|- | |- | ||
− | | | + | |1685 || -840|| [[Image:SenseWire1_1685V_Cosmics_10-12-07.jpg | 200 px]] |
|- | |- | ||
− | | | + | |1675 || -835|| [[Image:SenseWire1_1675V_Cosmics_10-12-07.jpg | 200 px]] |
|- | |- | ||
− | | | + | |1665 || -830|| [[Image:SenseWire1_1665V_Cosmics_10-12-07.jpg | 200 px]] |
|- | |- | ||
− | | | + | |1655 || -825|| [[Image:SenseWire1_1655V_Cosmics_10-12-07.jpg | 200 px]] |
|}<br> | |}<br> | ||
==Sense wire 2== | ==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 | + | 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 went 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. |
Line 36: | Line 55: | ||
|Scope Image | |Scope Image | ||
|- | |- | ||
− | | | + | |1705 || -855|| [[Image:SenseWire2_1700V_Cosmic_10-12-07.jpg | 200 px]] |
+ | |- | ||
+ | |1695 || -850|| [[Image:SenseWire2_1695V_Cosmic_10-12-07.jpg | 200 px]][[Image:SenseWire2_1695V_Cosmic_1_10-12-07.jpg | 200 px]][[Image:SenseWire2_1695V_Cosmic_2_10-12-07.jpg | 200 px]] | ||
+ | |- | ||
+ | |1685 || -845|| [[Image:SenseWire2_1685V_Cosmic_10-12-07.jpg | 200 px]][[Image:SenseWire2_1685V_Cosmic_1_10-12-07.jpg | 200 px]][[Image:SenseWire2_1685V_Cosmic_2_10-12-07.jpg | 200 px]] | ||
+ | |- | ||
+ | |1675 || -840|| [[Image:SenseWire2_1675V_Cosmic_10-12-07.jpg | 200 px]][[Image:SenseWire2_1675V_Cosmic_1_10-12-07.jpg | 200 px]][[Image:SenseWire2_1675V_Cosmic_2_10-12-07.jpg | 200 px]] | ||
|- | |- | ||
− | | | + | |1665 || -835|| [[Image:SenseWire2_1665V_Cosmic_10-12-07.jpg | 200 px]][[Image:SenseWire2_1665V_1_Cosmic_10-12-07.jpg | 200 px]] |
+ | |- | ||
+ | |1655 || -830|| [[Image:SenseWire2_1655V_Cosmic_10-12-07.jpg | 200 px]] | ||
|}<br> | |}<br> | ||
− | |||
==SenseWire 3== | ==SenseWire 3== | ||
Line 51: | Line 77: | ||
|Scope Image | |Scope Image | ||
|- | |- | ||
− | | | + | |1705 || -855|| [[Image:SenseWire3_1700V_Cosmic_10-12-07.jpg | 200 px]] |
|- | |- | ||
− | | | + | |1695 || -850|| [[Image:SenseWire3_1690V_Cosmic_10-12-07.jpg | 200 px]] |
|- | |- | ||
|1685 || -845|| [[Image:SenseWire3_1685V_Cosmic_10-12-07.jpg | 200 px]] | |1685 || -845|| [[Image:SenseWire3_1685V_Cosmic_10-12-07.jpg | 200 px]] | ||
Line 77: | Line 103: | ||
|Scope Image | |Scope Image | ||
|- | |- | ||
− | |1705 || -855|| [[Image: | + | |1705 || -855|| [[Image:SenseWire_4_1705V_Cosmics_10-12-07.jpg | 200 px]] |
|- | |- | ||
− | |1695 || -850|| [[Image: | + | |1695 || -850|| [[Image:SenseWire_4_1695V_Cosmics_10-12-07.jpg | 200 px]] |
|- | |- | ||
− | |1685 || -845|| [[Image: | + | |1685 || -845|| [[Image:SenseWire4_1685V_Cosmics_10-12-07.jpg | 200 px]] |
+ | |- | ||
+ | |1675 || -840|| [[Image:SenseWire4_1675V_Cosmic_10-12-07.jpg | 200 px]] | ||
+ | |- | ||
+ | |1665 || -835|| [[Image:SenseWire_4_1665V_Cosmics_10-12-07.jpg | 200 px]] | ||
|}<br> | |}<br> | ||
Line 93: | Line 123: | ||
|Scope Image | |Scope Image | ||
|- | |- | ||
− | | | + | |1705 || -855|| [[Image:SenseWire5_1705V_Cosmic_10-12-07.jpg | 200 px]] |
|- | |- | ||
− | | | + | |1695 || -850|| [[Image:SenseWire5_1695V_Cosmic_10-12-07.jpg | 200 px]] |
+ | |- | ||
+ | |1685 || -845|| [[Image:SenseWire5_1685V_Cosmic_10-12-07.jpg | 200 px]][[Image:SenseWire5_1685V_Cosmic_1_10-12-07.jpg | 200 px]] | ||
+ | |- | ||
+ | |1675 || -840|| [[Image:SenseWire5_1675V_Cosmic_10-12-07.jpg | 200 px]][[Image:SenseWire5_1675V_Cosmic_1_10-12-07.jpg | 200 px]] | ||
+ | |- | ||
+ | |1665 || -835|| [[Image:SenseWire5_1665V_Cosmic_10-12-07.jpg | 200 px]] | ||
|}<br> | |}<br> | ||
Line 107: | Line 143: | ||
|Scope Image | |Scope Image | ||
|- | |- | ||
− | | | + | |1705 || -855|| [[Image:SenseWire6_1705V_Cosmic_10-12-07.jpg | 200 px]] [[Image:SenseWire6_1705V_Cosmic_1_10-12-07.jpg | 200 px]] |
+ | |- | ||
+ | |1695 || -850|| [[Image:SenseWire6_1695V_Cosmic_10-12-07.jpg | 200 px]][[Image:SenseWire6_1695V_Cosmic_1_10-12-07.jpg | 200 px]] | ||
+ | |- | ||
+ | |1685 || -845|| [[Image:SenseWire6_1685V_Cosmic_10-12-07.jpg | 200 px]][[Image:SenseWire6_1685V_Cosmic_1_10-12-07.jpg | 200 px]] | ||
+ | |- | ||
+ | |1675 || -840|| [[Image:SenseWire6_1675V_Cosmic_10-12-07.jpg | 200 px]][[Image:SenseWire6_1675V_Cosmics_1_10-12-07.jpg | 200 px]] | ||
+ | |- | ||
+ | |1665 || -835|| [[Image:SenseWire6_1665V_Cosmic_10-12-07.jpg | 200 px]][[Image:SenseWire6_1665V_Cosmic_1_10-12-07.jpg | 200 px]] | ||
+ | |- | ||
+ | |1655 || -830|| [[Image:SenseWire6_1655V_Cosmic_10-12-07.jpg | 200 px]][[Image:SenseWire6_1655V_Cosmic_1_10-12-07.jpg | 200 px]][[Image:SenseWire6_1655V_Cosmic_2_10-12-07.jpg | 200 px]] | ||
+ | |- | ||
+ | |1645 || -825|| [[Image:SenseWire6_1645V_Cosmic_10-12-07.jpg | 200 px]] | ||
+ | |}<br> | ||
+ | |||
+ | ==SenseWire 7== | ||
+ | Preamplifier voltage was set to 5.9 Volts. | ||
+ | |||
+ | {| border="1" cellpadding="20" cellspacing="0" | ||
+ | |- | ||
+ | |Sense Wire HV (Volts) | ||
+ | |Field Wire HV (Volts) | ||
+ | |Scope Image | ||
+ | |- | ||
+ | |1705 || -855|| [[Image:SenseWire7_1705V_Cosmic_10-12-07.jpg | 200 px]][[Image:SenseWire7_1705V_Cosmic_1_10-12-07.jpg | 200 px]][[Image:SenseWire7_1705V_Cosmic_2_10-12-07.jpg | 200 px]] | ||
+ | |- | ||
+ | |1695 || -850|| [[Image:SenseWire7_1695V_Cosmic_10-12-07.jpg | 200 px]][[Image:SenseWire7_1695V_Cosmic_1_10-12-07.jpg | 200 px]] | ||
+ | |- | ||
+ | |1685 || -845|| [[Image:SenseWire7_1685V_Cosmic_10-12-07.jpg | 200 px]][[Image:SenseWire7_1685V_Cosmic_1_10-12-07.jpg | 200 px]][[Image:SenseWire7_1685V_Cosmic_2_10-12-07.jpg | 200 px]] | ||
+ | |- | ||
+ | |1675 || -840|| [[Image:SenseWire7_1675V_Cosmic_10-12-07.jpg | 200 px]][[Image:SenseWire7_1675V_Cosmic_1_10-12-07.jpg | 200 px]][[Image:SenseWire7_1675V_Cosmic_2_10-12-07.jpg | 200 px]] | ||
+ | |- | ||
+ | |1665 || -835|| [[Image:SenseWire7_1665V_Cosmic_10-12-07.jpg | 200 px]][[Image:SenseWire7_1665V_Cosmic_1_10-12-07.jpg | 200 px]][[Image:SenseWire7_1665V_Cosmic_2_10-12-07.jpg | 200 px]] | ||
+ | |- | ||
+ | |1655 || -830|| [[Image:SenseWire7_1655V_Cosmic_10-12-07.jpg | 200 px]][[Image:SenseWire7_1655V_Cosmic_1_10-12-07.jpg | 200 px]][[Image:SenseWire7_1655V_Cosmic_2_10-12-07.jpg | 200 px]] | ||
|- | |- | ||
− | | | + | |1645 || -825|| [[Image:SenseWire7_1645V_Cosmic_10-12-07.jpg | 200 px]][[Image:SenseWire7_1645V_Cosmic_1_10-12-07.jpg | 200 px]][[Image:SenseWire7_1645V_Cosmic_2_10-12-07.jpg | 200 px]] |
|}<br> | |}<br> | ||
[http://www.iac.isu.edu/mediawiki/index.php/Mini-prototype#Inspecting_Detector_Signals Back to Mini Prototype page] | [http://www.iac.isu.edu/mediawiki/index.php/Mini-prototype#Inspecting_Detector_Signals Back to Mini Prototype page] |
Latest revision as of 15:43, 24 October 2007
Operating Voltage Study
We will lower the operating voltage and take scope pictures to determine the operating point for the mini chamber.
Sense Wire | Sense Wire HV (Volts) | Field Wire HV (Volts) |
1 | ||
2 | 1685 | -845 |
3 | 1675 | -840 |
4 | 1685 | -845 |
5 | 1675 | -840 |
6 | 1655 | -830 |
7 | 1685 | -845 |
SenseWire 1
Preamplifier voltage was set to 5.9 Volts.
Sense Wire HV (Volts) | Field Wire HV (Volts) | Scope Image |
1700 | -850 | ![]() |
1695 | -845 | ![]() |
1685 | -840 | ![]() |
1675 | -835 | ![]() |
1665 | -830 | ![]() |
1655 | -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 went 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 | ![]() |
1695 | -850 | ![]() ![]() ![]() |
1685 | -845 | ![]() ![]() ![]() |
1675 | -840 | ![]() ![]() ![]() |
1665 | -835 | ![]() ![]() |
1655 | -830 | ![]() |
SenseWire 3
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 | ![]() |
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 | ![]() |
1665 | -835 | ![]() |
SenseWire 5
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 | ![]() ![]() |
1665 | -835 | ![]() |
SenseWire 6
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 | ![]() ![]() |
1665 | -835 | ![]() ![]() |
1655 | -830 | ![]() ![]() ![]() |
1645 | -825 | ![]() |
SenseWire 7
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 | ![]() ![]() ![]() |
1665 | -835 | ![]() ![]() ![]() |
1655 | -830 | ![]() ![]() ![]() |
1645 | -825 | ![]() ![]() ![]() |