Difference between revisions of "MiniPrototype SinglesCosmicRuns 2008"
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− | Scope picture below shows the Noise level on the DC.<br> | + | Scope picture below shows the Noise level on the DC measured in infinite persist time mode.<br> |
[[Image:noise_level_of_plastika_and_metalica_using_gain_amplifier_30-04-2008.png|300px]]<br> | [[Image:noise_level_of_plastika_and_metalica_using_gain_amplifier_30-04-2008.png|300px]]<br> | ||
− | + | Scope pictures representing the cosmic signals from Plastika and Metalica(Amplifier is connected).<br> | |
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+ | ==Plastika== | ||
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+ | ==Metalica== | ||
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Revision as of 05:03, 1 May 2008
Goal
Use singles Cosmic events to measure rate differences between Metalica and Plastica
Apparatus
- Plastica and Metalica are stacked on top of each other. High Voltage and ionization gas are connected in parallel.
- A discriminator is connector to the amplified output (an on board preamp and the VPI Post amp) of sense wire 4.
- The discriminator output is connected to a VME scaler.
Proposed Tests
- Measure the singles rate as a function of DC high voltage
- Measure the singles rate as a function of Discriminator Threshold
30-04-2008
The DC high voltage is on. The DC outputs of Plastika and Metalica from sense wire 3 are connected to the Model 777 Octal Variable Gain Amplifier.
HV settings | ||
Wire | Volts | |
Sense | 1700 | |
Field | -800 | |
Guard | 800 |
Scope picture below shows the Noise level on the DC measured in infinite persist time mode.
Scope pictures representing the cosmic signals from Plastika and Metalica(Amplifier is connected).