AMP/TSCA - Model 2015A
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Features
- Spectroscopy grade amplifier with high count rate restoration
- Timing single channel analyzer with:
- SCA and LLD or ULD outputs
- LLD threshold indicator for easy set-up
- Preamp leading edge timing
- Designed for use with proportional counters, NaI(Tl), Ge, and Si detectors
Description
The CANBERRA Model 2015A combines, in one single width module, a spectroscopy amplifier with gated baseline restoration and a timing single channel pulse height analyzer.
The 2015A amplifier employs a simple gated baseline restorer which, because of its symmetrical characteristic, provides high resolution for HPGe detectors at low and high counting rates.
Although it is a high performance instrument, the Model 2015A is also very versatile. It has all the characteristics necessary to make it useful with scintillation detectors, gas proportional counters, and silicon detectors. High gain, low noise, selectable time constants, and count rate optimization are several of the more important features designed into the amplifier of the Model 2015A.
The utility of the Model 2015A derives from the dual function of its pulse height analyzer circuitry. In the SCA mode of operation, a logic signal output is generated whenever the amplifier unipolar signal falls between the energy levels determined by the front panel controls (E and DE). This mode is especially useful when a wide dynamic range is required.
In the Timing (TSCA) mode the same logic signal is generated, but it is referenced in time relative to the leading edge of the preamp signal. This provides a signal that is useful in applications requiring time coincidence.
In addition to the SCA OUTPUT, the Model 2015A also provides a multifunction capability which can be programmed internally to provide a lower level (E) Discriminator Output, or an upper level DISCriminator (E + DE) Output or to provide an external input level for remote control of the lower level discriminator.
Precise repeatable performance is designed and built into the 2015A. The front panel variable controls of the Model 2015A are precision ten-turn potentiometers. The precision of the DE window setting can be further enhanced by use of rear panel sensitivity selector switch (DE Range). A front panel LED indicator is provided to assist in set up and troubleshooting. The LED is activated from the lower level discriminator and is useful for setting the discriminator just above the noise.
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