The bMCA-Box is a special version of the bMCA (USB or Ethernet), where the tube socket has been replaced by a single SHV connector. By doing so, the bMCA can be used with a range of odd-sized detectors that are supplied with a single connector that carries both the signal and the high voltage supply.
bMCA is a compact, digital Multi-Channel Analyzer (MCA), which is able to perform Pulse Height Analysis (PHA) of the signal produced by a standard 14-pin standard photomultiplier coupled to a scintillation detector such as NaI(Tl), LaBr3(Ce), LaCl3(Ce), CeBr3, etc.
The device is useful for obtaining the energy spectrum from the photon radiation detected by the scintillator, and can be connected into the local network via a standard Ethernet connection. The device is powered via Ethernet using Power-over-Ethernet (PoE) technology.
The bMCA is provided with a basic software package that allows one to control the device, and to acquire and visualize the energy spectrum. The software incorporates an advanced and easy to use “discovery” function that can be used to detect automatically all the bMCAs (USB or Ethernet) in the neighborhood of the PC that are available for connection. A set of programming libraries are also offered, which makes the incorporation of the bMCA into existing radiation system or setup very easy. The programming libraries are available for both MS Windows and Linux operating systems.
The bMCA is an advanced, fully digital, compact MultiChannel Analyzer (MCA). This device is used to process the electronic pulses produced by a photomultiplier that is coupled to a scintillator detector. Such detectors are commonly used in the detection of gamma-ray radiation due to their high detection efficiency, medium energy resolution and relatively low price. This kind of MCA is able to produce an energy spectrum from the radiation events detected by the scintillator, storing it in the device’s memory for further retrieval and analysis by the PC.
The bMCA implements two modes of data acquisition:
PHA mode is regularly used in nuclear spectrometry and radiometry, while MCS is a very useful feature for following photon detections in specific energy regions as a function of time. MCS acquisition mode is useful in both laboratory and industrial applications that make use of radioactive sources or when seeking for radioactive materials.
Moreover, the MCA has built-in advanced PHA data acquisition modes, such as:
The bMCA design makes use of the latest advances in digital electronics. The MCA utilizes powerful digital processing techniques and algorithms to better separate the useful signal from noise and to maximize performance under high count rate conditions. The acquired spectra under PHA mode is extended for Dead Time. The device has a spectral memory size of up to 4096 channels and can perform MCS in addition to PHA.
The MCA contains a miniaturized high-voltage power supply optimized for low consumption that provides the necessary power for the PMT tube, including those used with large scintillator detectors.
The bMCA has a spectral memory size of up to 4096 channels and can perform MCS in addition to PHA. On the data communications side, this device features lighting-fast transfer rates, with a 1024-channel spectrum being trans-mitted typically in less than 30 microseconds.
A basic acquisition software package is provided for managing such device operations as setup, control, data acquisition and visualization. A digital oscilloscope function allows monitoring the input and filtered pulses to aid in fine tuning the MCA parameters. The program also includes a few spectrometry related functions for processing the spectral data: calibration, ROI analysis and peak search, to mention a few.
PHA Acquisition Mode
MCS Acquisition Mode
High Voltage Power Supply
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