Difference between revisions of "MainPage:Nuclear:Summer2013:FastAmplifier"
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===741C Op-Amp=== | ===741C Op-Amp=== | ||
| − | Pros: Cheap ($0.75) | + | Pros: Cheap ($0.75), very durable |
| − | Cons: | + | Cons: Low slew rate, amplification bandwidth only extends to about 1 MHz |
===Second Amp=== | ===Second Amp=== | ||
| − | Pros: | + | Pros: High slew rate, amplification bandwidth of approximately 2 GHz |
| − | Cons: Relatively expensive (~$10), | + | Cons: Relatively expensive (~$10), can be easily destroyed by static electricity accumulated on the body. |
Revision as of 11:02, 9 July 2013
Goal
Determine appropriate amplifier for a photomultiplier tube to be used in a detector, so as to prevent the background noise from drowning out the signal from the PMT.
Challenges
Slew Rate
The slew rate is defined as the measurement of how fast an amplifier can respond to an electrical signal. Thus, the slew rate determines the range of frequencies that can be amplified according to the formula S = 2πfVp, where f is the frequency of the signal and Vp is the peak voltage. In order for our amplifier to work with the PMT, the slew rate must be high enough to catch the frequency of it's signal.
Cost
While not necessarily a major concern, it would be in the best interest of the program to find an optimal solution that gives good results with as little cost as possible.
Amplifiers
There are two models of amplifiers we will test for usage in the detector: the LM 741C operational amplifier and the LMH 730154 high speed differential amplifier.
741C Op-Amp
Pros: Cheap ($0.75), very durable
Cons: Low slew rate, amplification bandwidth only extends to about 1 MHz
Second Amp
Pros: High slew rate, amplification bandwidth of approximately 2 GHz
Cons: Relatively expensive (~$10), can be easily destroyed by static electricity accumulated on the body.
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